WO2007043806A1

WO2007043806A1 - Method and apparatus for transmitting video message in w-cdma network

Info

Publication number: WO2007043806A1
Application number: PCT/KR2006/004092
Authority: WO
Inventors: Seung-Chun Hong; Gil-Soo Lee
Original assignee: Ti Square Technology Ltd.
Priority date: 2005-10-11
Filing date: 2006-10-11
Publication date: 2007-04-19

Abstract

The present invention relates to a method and apparatus for transmitting video messages over a W-CDMA network. The method includes the steps of receiving a call connection request signal from the MSC, transmitting a call connection response signal to the MSC in response to the call connection request signal, setting up a first voice and video channel with the calling terminal based on the call connection response signal and the first call setup response signal, receiving a video message from the calling terminal via the first voice and video channel, storing the video message, releasing the first voice and video channel, transmitting an outbound call request signal to the MSC to set up a connection to the called terminal, receiving an outbound call response signal from the MSC in response to the second call setup response signal, setting up a second voice and video channel with the called terminal based on the second call setup response signal and the outbound call response signal, and transmitting the video message to the called terminal via the second voice and video channel.

Description

METHOD AND APPARATUS FOR TRANSMITTING VIDEO MESSAGE IN W-CDMA NETWORK

Technical Field

[1] The present invention generally relates to a method and apparatus for transmitting video messages over a W-CDMA network. More particularly, the present invention relates to a method and apparatus for conveniently transmitting a video and voice message, such as simple reports, business instructions, or greetings, without directly engaging in conversation with counterparts. Background Art

[2] In the past, there was no method capable of storing a video message and transmitting the stored video message to a counterpart using a W-CDMA terminal. A conventional voice/video communication method is a currently used telephone communication method in which a user uses voice/video communication service or supplementary voice communication service for communication with a counterpart by inputting the counterpart's telephone number and then pressing a call button, or by inputting a special code and the counterpart's telephone number and then pressing a call button.

[3] Furthermore, in the case of Voice Mail Service (VMS), in order to transmit a video message to a counterpart, a user must perform a complicated procedure of accessing a VMS system using the VMS's representative access number instead of the counterpart's telephone number, and then undergoing processes of authenticating a calling party, inputting a called number, and storing voice/video. A called party must also receive a Short Message Service (SMS) message related to a voice/video message transmitted by a transmitter, access the VMS system, undergo an authentication process using a password or the like, and view and listen to the received voice/video message. There is a limitation on the method of viewing and listening to a received voice/video message and then immediately making a response to a calling party using a voice/video message. Furthermore, in the case of 2G voice message transmission service, it provides only voice as a message transmission means, therefore there is a limitation on the form of a message to be transmitted. Disclosure of Invention

Technical Problem

[4] An object of the present invention is to provide a method and apparatus in which a calling subscriber leaves a video and voice message for a called subscriber or a plurality of members belonging to a group without directly conversing with them, and the video and voice message are transmitted to the called subscriber or the members belonging to the group, over a W-CDMA network.

[5] Another object of the present invention is to provide a method and apparatus for transmitting a video message using the menu function and wireless Internet access key of a mobile terminal as well as a communication method through inputting an existing feature code and inputting a called number and pressing a call button.

[6] A further object of the present invention is to provide a method and apparatus for viewing and listening to a video message from a calling party, and immediately leaving a response message for the calling subscriber and transmitting the response message to the calling party, or performing a function such as direct video communication with the calling party.

[7] Yet another object of the present invention is to provide a method and apparatus for providing a method of accessing WEB or WAP in addition to a W-CDMA network, thereby recording video messages, and checking and storing messages, which have already been checked or have not been checked. Technical Solution

[8] In order to accomplish the above objects, according to an aspect of the present invention, there is provided a method of transmitting video messages through a service providing apparatus that is connected to a calling terminal, a called terminal, a Home Location Register (HLR) and an Mobile Switching Center (MSC) via a W-CDMA network, the method comprising the steps of: receiving a call connection request signal from the MSC, wherein the call connection request signal corresponds to a first call setup request signal received from the calling terminal by the MSC; transmitting a call connection response signal to the MSC in response to the call connection request signal, wherein the MSC transmits a first call setup response signal to the calling terminal in response to the call connection response signal; setting up a first voice and video channel with the calling terminal based on the call connection response signal and the first call setup response signal; receiving a video message from the calling terminal via the first voice and video channel; storing the video message; releasing the first voice and video channel; transmitting an outbound call request signal to the MSC to set up a connection to the called terminal, wherein the MSC transmits a second call setup request signal to the called terminal in response to the outbound call request signal and receives a second call setup response signal in response thereto; receiving an outbound call response signal from the MSC in response to the second call setup response signal; setting up a second voice and video channel with the called terminal based on the second call setup response signal and the outbound call response signal; and transmitting the video message to the called terminal via the second voice and video channel.

[9] According to another aspect of the present invention, there is provided a method of transmitting video messages through a service providing apparatus that is connected to a calling terminal, a called terminal, an HLR and an MSC via a W-CDMA network, the method comprising the steps of: receiving a first call connection request signal from the MSC, wherein the first call connection request signal corresponds to a first call setup request signal received from the calling terminal by the MSC; transmitting a first call connection response signal to the MSC in response to the first call connection request signal, wherein the MSC transmits a first call setup response signal to the calling terminal in response to the first call connection response signal; setting up a first voice and video channel with the calling terminal based on the first call connection response signal and the first call setup response signal; receiving a video message from the calling terminal via the first voice and video channel; storing the video message; releasing the first voice and video channel; transmitting a callback SMS message to the called terminal, wherein the called terminal transmits a second call setup request signal to the MSC using the callback SMS message to set up a call connection to the service providing apparatus; receiving a second call connection request signal from the MSC in response to the second call setup request signal; transmitting a second call connection response signal to the MSC in response to the second call connection request signal, wherein the MSC transmits a second call setup response signal to the called terminal in response to the second call connection response signal; setting up a second voice and video channel with the called terminal based on the second call connection response signal and the second call setup response signal; and transmitting the video message to the called terminal via the second voice and video channel.

[10] According to another aspect of the present invention, there is provided a method of transmitting video messages through a service providing apparatus that is connected to a calling terminal, an MSC, an HLR, a Service Control Point (SCP) and a called terminal via a W-CDMA network, the method comprising the steps of: receiving a call connection request signal from the MSC, wherein the call connection request signal corresponds to a Furnish Charging Information (FCI) signal and an Establish Temporary Connection (ETC) signal, which are received by the MSC from the SCP in response to an Initial Detection Point (IDP) signal for a video message transmission service when the MSC receives a first call setup request signal from the calling terminal, transmits a Send Routing Information (SRI) signal for querying a location of the service providing apparatus to the HLR, and transmits the IDP signal to the SCP based on a SRI response signal received in response to the SRI signal; transmitting a call connection response signal to the MSC in response to the call connection request signal, wherein the MSC transmits a first call setup response signal to the calling terminal in response to the call connection response signal; setting up a first voice and video channel with the calling terminal based on the call connection response signal and the first call setup response signal; transmitting a first Assist Request Instructions (ARI) signal for fetching a temporary number corresponding to the calling terminal to the SCP; receiving a first Play Announcement (PA) signal, including the temporary number corresponding to the calling terminal, from the SCP in response to the first ARI signal; receiving a video message from the calling terminal based on the temporary number of the calling terminal and the first voice and video channel; storing the video message; releasing the first voice and video channel; transmitting an outbound call request signal to the MSC to set up a connection to the called terminal, wherein the MSC transmits a second call setup request signal to the called terminal in response to the outbound call request signal, and receives a second call setup response signal in response thereto; receiving an outbound call response signal from the MSC in response to the second call setup response signal; setting up a second voice and video channel with the called terminal based on the second call setup response signal and the outbound call response signal; transmitting a second ARI signal for requesting video message information to the SCP; receiving a second PA signal, including the video message information, transmitted in response to the second ARI signal; and transmitting the video message to the called terminal based on the second PA signal. [11] According to another aspect of the present invention, there is provided a method of transmitting video messages through a service providing apparatus that is connected to a calling terminal, an MSC, an HLR, an SCP and a called terminal via a W-CDMA network, the method comprising the steps of: receiving a first call connection request signal from the MSC, wherein the first call connection request signal corresponds to a first FCI signal and a first ETC signal, which are received by the MSC from the SCP in response to a first IDP signal for a video message transmission service when the MSC receives a first call setup request signal from the calling terminal, transmits a first SRI signal for querying a location of the service providing apparatus to the HLR, and transmits the first IDP signal to the SCP based on a first SRI response signal received in response to the first SRI signal; transmitting a first call connection response signal to the MSC in response to the first call connection request signal, wherein the MSC transmits a first call setup response signal to the calling terminal in response to the first call connection response signal; setting up a first voice and video channel with the calling terminal based on the first call connection response signal and the first call setup response signal; transmitting a first ARI signal, for fetching a temporary number corresponding to the calling terminal, to the SCP; receiving a first PA signal, including the temporary number corresponding to the calling terminal, from the SCP in response to the first ARI signal; receiving a video message from the calling terminal based on the temporary number of the calling terminal and the first voice and video channel; storing the video message; releasing the first voice and video channel; transmitting a callback SMS message to the called terminal, wherein the called terminal transmits a second call setup request signal to the MSC using the callback SMS message to set up a call connection to the service providing apparatus, and the MSC transmits a second SRI signal for querying a location of the service providing apparatus to the HLR in response to the second call setup request signal, transmits a second IDP signal for a video message transmission service to the SCP based on a second SRI response signal received in response to the second SRI signal, and receives a second FCI signal and a second ETC signal from the SCP in response to the second IDP signal; receiving a second call connection request signal from the MSC in response to the second FCI signal and the second ETC signal; transmitting a second call connection response signal to the MSC in response to the second call connection request signal, wherein the MSC transmits a second call setup response signal to the called terminal in response to the second call connection response signal; setting up a second voice and video channel with the calling terminal based on the second call connection response signal and the second call setup response signal; transmitting a second ARI signal, for requesting video message information, to the SCP; receiving a second PA signal, including the video message information, transmitted in response to the second ARI signal; and transmitting the video message to the called terminal based on the second PA signal.

[12] In a preferred embodiment, the step of setting up the first voice and video channel with the calling terminal comprises the steps of: determining a master/slave relationship with the calling terminal; transmitting and receiving information about capacity to/from the calling terminal; transmitting and receiving a MUX table to/from the calling terminal; setting up a video channel with the calling terminal; setting up a voice channel with the calling terminal; and synchronizing video and voice by transmitting video reference frame information to the calling terminal.

[13] Furthermore, the step of setting up the second voice and video channel with the calling terminal comprises the steps of: determining a master/slave relationship with the called terminal; transmitting and receiving information about capacity to/from the called terminal; transmitting and receiving a MUX table to/from the called terminal; setting up a video channel with the called terminal; setting up a voice channel with the called terminal; and synchronizing video and voice by transmitting video reference frame information to the called terminal.

[14] Furthermore, the method further comprises the step of transmitting a Specialized

Resource Report (SRR) signal, providing notification of the SCP of the storage content, after storing the video message received from the calling terminal.

[15] Furthermore, the method further comprises the steps of: receiving a wireless

Internet access request signal from the calling terminal, wherein the wireless Internet access request signal is generated by inputting a telephone number of the called terminal and pressing a wireless Internet connection button of the calling terminal; transmitting a supplementary service-integrated screen, including a supplementary service list, to the calling terminal; receiving a video message transmission service request signal from the calling terminal; and releasing a wireless Internet connection with the calling terminal.

[16] Furthermore, the first call setup request signal includes a feature code of the video message transmission service and an identifier of the called terminal.

[17] Furthermore, the first call setup request signal is transmitted from the calling terminal to the MSC using one of a method using a hot key, a method using a message box menu, and a method using a telephone directory menu.

[18] Furthermore, the method may further comprises the steps of transmitting a guidance announcement for response to the called terminal; receiving a video message response request signal from the called terminal in response to the guidance announcement; transmitting a guidance announcement for video message transmission to the called terminal in response to the video message response request signal; receiving a response video message from the called terminal; storing the response video message; releasing the second voice and video channel; transmitting an outbound call request signal to the MSC to set up a connection with the calling terminal, wherein the MSC transmits a third call setup request signal to the calling terminal in response to the outbound call request signal, and receives a third call setup response sign in response thereto; receiving an outbound call response signal from the MSC in response to the third call setup response signal; setting up a third voice and video channel with the calling terminal based on the third call setup response signal and the outbound call response signal; and transmitting the response video message to the calling terminal via the third voice and video channel.

[19] Furthermore, the method may further comprises the steps of: transmitting a guidance announcement for response to the called terminal; receiving a calling terminal connection request signal from the called terminal in response to the guidance announcement; transmitting an outbound call request signal to the MSC for connection to the calling terminal, wherein the MSC transmits a third call setup request signal to the calling terminal in response to the outbound call request signal and receives a third call setup response signal in response to the third call setup request signal; receiving an outbound call response signal from the MSC in response to the third call setup response signal; and setting up a third voice and video channel with the calling terminal based on the third call setup response signal and the outbound call response signal; wherein the calling terminal and the called terminal make a video call using the second voice and video channel and the third voice and video channel.

[20] Furthermore, the method may further comprises the steps of: transmitting a guidance announcement for responding to the called terminal; receiving a calling terminal paging request signal from the called terminal in response to the guidance announcement; releasing the second voice and video channel; transmitting an outbound call request signal to the MSC in order to page the calling terminal, wherein the MSC transmits a third call setup request signal to the calling terminal in response to the outbound call request signal and receives a third call setup response signal in response to the third call setup request signal; receiving an outbound call response signal from the MSC in response to the third call setup response signal; transmitting an outbound call request signal to the MSC in order to page the called terminal, wherein the MSC transmits a fourth call setup request signal to the called terminal in response to the outbound call request signal, and receives a fourth call setup response signal in response to the fourth call setup request signal; receiving an outbound call response signal from the MSC in response to the fourth call setup response signal; and setting up a third voice and video channel between the calling terminal and the called terminal; wherein the calling terminal and the called terminal make a video call using the third voice and video channel.

[21] Furthermore, the method may further comprises the steps of: transmitting a called subscriber state request signal for querying a state of the called terminal to the HLR; and receiving a called subscriber state response signal from the HLR; wherein, if, as a result of the reception of the called subscriber state response signal, the called terminal is in a standby state, the outbound call request signal is transmitted to the MSC to set up a connection to the called terminal.

[22] Furthermore, the method may further comprises the steps of: transmitting a called subscriber state request signal to query the state of the called terminal to the HLR; and receiving a called subscriber state response signal from the HLR; wherein if, according to the received called subscriber state response signal, the called terminal is determined to be in a standby state, the callback SMS message is transmitted to the called terminal.

[23] Furthermore, the second call setup response signal and the outbound call response signal include an Address Complete Message (ACM) and an Answer Message (ANM); and the ACM includes a backward call indicator indicating information of a state of the called terminal.

[24] Furthermore, the second call setup response signal and the outbound call response signal include an ACM, a Call Progress (CPG) and an ANM; and the service providing apparatus determines that the called terminal is not in a standby state when the CPG is received.

[25] Furthermore, the method may further comprises the step of the service providing apparatus converting the video message into a voice codec if the called terminal does not support 3G.

[26] Furthermore, the service providing apparatus receives a voice message from the calling terminal, combines the voice message with previously stored video and generates a video message if the calling terminal does not support 3G.

[27] According to another aspect of the present invention, there is provided a method of transmitting video messages through a service providing apparatus that is connected to a calling terminal, a called terminal, an calling side MSC and an called side MSC via a W-CDMA network, the method comprising the steps of: receiving a first call connection request signal from the calling side MSC, wherein the first call connection request signal corresponds to a first call setup request signal, which is transmitted from the calling terminal to the calling side MSC to set up a telephone call to the called terminal; transmitting a second call connection request signal to the called side MSC in response to the first call connection request signal; receiving a first call connection response signal from the called side MSC in response to the second call connection request signal; transmitting a second call connection response signal to the calling side MSC in response to the first call connection response signal; setting up a first voice and video channel with the called side MSC based on the first call connection response signal; setting up a second voice and video channel with the calling side MSC based on the second call connection response signal; receiving a guidance announcement from the called side MSC; transmitting the guidance announcement to the calling terminal; receiving a DTMF signal for video message transmission from the calling terminal according to the guidance announcement; releasing the first voice and video channel; transmitting a message for video message transmission to the calling terminal; receiving a video message from the calling terminal according to the message for video message transmission; storing the video message; releasing the first voice and video channel; transmitting an outbound call request signal to the MSC for connection to the called terminal, wherein the MSC transmits a second call setup request signal to the called terminal in response to the outbound call request signal, and receives a second call setup response signal in response thereto; receiving an outbound call response signal from the MSC in response to the second call setup response signal; setting up a second voice and video channel with the called terminal based on the second call setup response signal and the outbound call response signal; and transmitting the video message to the called terminal via the second voice and video channel.

[28] According to another aspect of the present invention, there is provided a service providing apparatus for transmitting video messages, the service providing apparatus being connected to a calling terminal, a called terminal, a Home Location Register (HLR) and an Mobile Switching Center (MSC) via a W-CDMA network, the service providing apparatus comprising: means for receiving a call connection request signal from the MSC, wherein the call connection request signal corresponds to a first call setup request signal received from the calling terminal by the MSC; means for transmitting a call connection response signal to the MSC in response to the call connection request signal, wherein the MSC transmits a first call setup response signal to the calling terminal in response to the call connection response signal; means for setting up a first voice and video channel with the calling terminal based on the call connection response signal and the first call setup response signal; means for receiving a video message from the calling terminal via the first voice and video channel; means for storing the video message; means for releasing the first voice and video channel; means for transmitting an outbound call request signal to the MSC to set up a connection to the called terminal, wherein the MSC transmits a second call setup request signal to the called terminal in response to the outbound call request signal and receives a second call setup response signal in response thereto; means for receiving an outbound call response signal from the MSC in response to the second call setup response signal; means for setting up a second voice and video channel with the called terminal based on the second call setup response signal and the outbound call response signal; and means for transmitting the video message to the called terminal via the second voice and video channel.

[29] According to another aspect of the present invention, there is provided a service providing apparatus for transmitting video messages, the service providing apparatus being connected to a calling terminal, a called terminal, an HLR and an MSC via a W- CDMA network, the service providing apparatus comprising: means for receiving a first call connection request signal from the MSC, wherein the first call connection request signal corresponds to a first call setup request signal received from the calling terminal by the MSC; means for transmitting a first call connection response signal to the MSC in response to the first call connection request signal, wherein the MSC transmits a first call setup response signal to the calling terminal in response to the first call connection response signal; means for setting up a first voice and video channel with the calling terminal based on the first call connection response signal and the first call setup response signal; means for receiving a video message from the calling terminal via the first voice and video channel; means for storing the video message; means for releasing the first voice and video channel; means for transmitting a callback SMS message to the called terminal, wherein the called terminal transmits a second call setup request signal to the MSC using the callback SMS message to set up a call connection to the service providing apparatus; means for receiving a second call connection request signal from the MSC in response to the second call setup request signal; means for transmitting a second call connection response signal to the MSC in response to the second call connection request signal, wherein the MSC transmits a second call setup response signal to the called terminal in response to the second call connection response signal; means for setting up a second voice and video channel with the called terminal based on the second call connection response signal and the second call setup response signal; and means for transmitting the video message to the called terminal via the second voice and video channel.

[30] According to another aspect of the present invention, there is provided a service providing apparatus for transmitting video messages, the service providing apparatus being connected to a calling terminal, an MSC, an HLR, a Service Control Point (SCP) and a called terminal via a W-CDMA network, the service providing apparatus comprising: means for receiving a call connection request signal from the MSC, wherein the call connection request signal corresponds to a Furnish Charging Information (FCI) signal and an Establish Temporary Connection (ETC) signal, which are received by the MSC from the SCP in response to an Initial Detection Point (IDP) signal for a video message transmission service when the MSC receives a first call setup request signal from the calling terminal, transmits a Send Routing Information (SRI) signal for querying a location of the service providing apparatus to the HLR, and transmits the IDP signal to the SCP based on a SRI response signal received in response to the SRI signal; means for transmitting a call connection response signal to the MSC in response to the call connection request signal, wherein the MSC transmits a first call setup response signal to the calling terminal in response to the call connection response signal; means for setting up a first voice and video channel with the calling terminal based on the call connection response signal and the first call setup response signal; means for transmitting a first Assist Request Instructions (ARI) signal for fetching a temporary number corresponding to the calling terminal to the SCP; means for receiving a first Play Announcement (PA) signal, including the temporary number corresponding to the calling terminal, from the SCP in response to the first ARI signal; means for receiving a video message from the calling terminal based on the temporary number of the calling terminal and the first voice and video channel; means for storing the video message; means for releasing the first voice and video channel; means for transmitting an outbound call request signal to the MSC to set up a connection to the called terminal, wherein the MSC transmits a second call setup request signal to the called terminal in response to the outbound call request signal, and receives a second call setup response signal in response thereto; means for receiving an outbound call response signal from the MSC in response to the second call setup response signal; means for setting up a second voice and video channel with the called terminal based on the second call setup response signal and the outbound call response signal; means for transmitting a second ARI signal for requesting video message information to the SCP; means for receiving a second PA signal, including the video message information, transmitted in response to the second ARI signal; and means for transmitting the video message to the called terminal based on the second PA signal. [31] According to another aspect of the present invention, there is provided a service providing apparatus for transmitting video messages, the service providing apparatus being connected to a calling terminal, an MSC, an HLR, an SCP and a called terminal via a W-CDMA network, the service providing apparatus comprising: means for receiving a first call connection request signal from the MSC, wherein the first call connection request signal corresponds to a first FCI signal and a first ETC signal, which are received by the MSC from the SCP in response to a first IDP signal for a video message transmission service when the MSC receives a first call setup request signal from the calling terminal, transmits a first SRI signal for querying a location of the service providing apparatus to the HLR, and transmits the first IDP signal to the SCP based on a first SRI response signal received in response to the first SRI signal; means for transmitting a first call connection response signal to the MSC in response to the first call connection request signal, wherein the MSC transmits a first call setup response signal to the calling terminal in response to the first call connection response signal; means for setting up a first voice and video channel with the calling terminal based on the first call connection response signal and the first call setup response signal; means for transmitting a first ARI signal, for fetching a temporary number corresponding to the calling terminal, to the SCP; means for receiving a first PA signal, including the temporary number corresponding to the calling terminal, from the SCP in response to the first ARI signal; means for receiving a video message from the calling terminal based on the temporary number of the calling terminal and the first voice and video channel; means for storing the video message; means for releasing the first voice and video channel; means for transmitting a callback SMS message to the called terminal, wherein the called terminal transmits a second call setup request signal to the MSC using the callback SMS message to set up a call connection to the service providing apparatus, and the MSC transmits a second SRI signal for querying a location of the service providing apparatus to the HLR in response to the second call setup request signal, transmits a second IDP signal for a video message transmission service to the SCP based on a second SRI response signal received in response to the second SRI signal, and receives a second FCI signal and a second ETC signal from the SCP in response to the second IDP signal; means for receiving a second call connection request signal from the MSC in response to the second FCI signal and the second ETC signal; means for transmitting a second call connection response signal to the MSC in response to the second call connection request signal, wherein the MSC transmits a second call setup response signal to the called terminal in response to the second call connection response signal; means for setting up a second voice and video channel with the calling terminal based on the second call connection response signal and the second call setup response signal; means for transmitting a second ARI signal, for requesting video message information, to the SCP; means for receiving a second PA signal, including the video message information, transmitted in response to the second ARI signal; and means for transmitting the video message to the called terminal based on the second PA signal.

[32] According to another aspect of the present invention, there is provided a service providing apparatus for transmitting video messages, the service providing apparatus being connected to a calling terminal, a called terminal, an calling side MSC and an called side MSC via a W-CDMA network, the service providing apparatus comprising: means for receiving a first call connection request signal from the calling side MSC, wherein the first call connection request signal corresponds to a first call setup request signal, which is transmitted from the calling terminal to the calling side MSC to set up a telephone call to the called terminal; means for transmitting a second call connection request signal to the called side MSC in response to the first call connection request signal; means for receiving a first call connection response signal from the called side MSC in response to the second call connection request signal; means for transmitting a second call connection response signal to the calling side MSC in response to the first call connection response signal; means for setting up a first voice and video channel with the called side MSC based on the first call connection response signal; means for setting up a second voice and video channel with the calling side MSC based on the second call connection response signal; means for receiving a guidance announcement from the called side MSC; means for transmitting the guidance announcement to the calling terminal; means for receiving a DTMF signal for video message transmission from the calling terminal according to the guidance announcement; means for releasing the first voice and video channel; means for transmitting a message for video message transmission to the calling terminal; means for receiving a video message from the calling terminal according to the message for video message transmission; means for storing the video message; means for releasing the first voice and video channel; means for transmitting an outbound call request signal to the MSC for connection to the called terminal, wherein the MSC transmits a second call setup request signal to the called terminal in response to the outbound call request signal, and receives a second call setup response signal in response thereto; means for receiving an outbound call response signal from the MSC in response to the second call setup response signal; means for setting up a second voice and video channel with the called terminal based on the second call setup response signal and the outbound call response signal; and means for transmitting the video message to the called terminal via the second voice and video channel.

[33] According to another aspect of the present invention, there is provided a service providing apparatus for transmitting video messages, the service providing apparatus being connected to a calling terminal, a called terminal, a Home Location Register (HLR) and an Mobile Switching Center (MSC) via a W-CDMA network, the the service providing apparatus comprising: memory for storing a program; and a processor for executing the program in conjunction with the memory; wherein the processor, using the program, receives a call connection request signal from the MSC, wherein the call connection request signal corresponds to a first call setup request signal received from the calling terminal by the MSC; transmits a call connection response signal to the MSC in response to the call connection request signal, wherein the MSC transmits a first call setup response signal to the calling terminal in response to the call connection response signal; sets up a first voice and video channel with the calling terminal based on the call connection response signal and the first call setup response signal; receives a video message from the calling terminal via the first voice and video channel; stores the video message; releases the first voice and video channel; transmits an outbound call request signal to the MSC to set up a connection to the called terminal, wherein the MSC transmits a second call setup request signal to the called terminal in response to the outbound call request signal and receives a second call setup response signal in response thereto; receives an outbound call response signal from the MSC in response to the second call setup response signal; sets up a second voice and video channel with the called terminal based on the second call setup response signal and the outbound call response signal; and transmits the video message to the called terminal via the second voice and video channel.

[34] According to another aspect of the present invention, there is provided a service providing apparatus for transmitting video messages, the service providing apparatus being connected to a calling terminal, a called terminal, an HLR and an MSC via a W- CDMA network, the service providing apparatus comprising: memory for storing a program; and a processor for executing the program in conjunction with the memory; wherein the processor, using the program, receives a first call connection request signal from the MSC, wherein the first call connection request signal corresponds to a first call setup request signal received from the calling terminal by the MSC; transmits a first call connection response signal to the MSC in response to the first call connection request signal, wherein the MSC transmits a first call setup response signal to the calling terminal in response to the first call connection response signal; sets up a first voice and video channel with the calling terminal based on the first call connection response signal and the first call setup response signal; receives a video message from the calling terminal via the first voice and video channel; stores the video message; releases the first voice and video channel; transmits a callback SMS message to the called terminal, wherein the called terminal transmits a second call setup request signal to the MSC using the callback SMS message to set up a call connection to the service providing apparatus; receives a second call connection request signal from the MSC in response to the second call setup request signal; transmits a second call connection response signal to the MSC in response to the second call connection request signal, wherein the MSC transmits a second call setup response signal to the called terminal in response to the second call connection response signal; sets up a second voice and video channel with the called terminal based on the second call connection response signal and the second call setup response signal; and transmits the video message to the called terminal via the second voice and video channel.

[35] According to another aspect of the present invention, there is provided a service providing apparatus for transmitting video messages, the service providing apparatus being connected to a calling terminal, an MSC, an HLR, a Service Control Point (SCP) and a called terminal via a W-CDMA network, the service providing apparatus comprising: memory for storing a program; and a processor for executing the program in conjunction with the memory; wherein the processor, using the program, receives a call connection request signal from the MSC, wherein the call connection request signal corresponds to a Furnish Charging Information (FCI) signal and an Establish Temporary Connection (ETC) signal, which are received by the MSC from the SCP in response to an Initial Detection Point (IDP) signal for a video message transmission service when the MSC receives a first call setup request signal from the calling terminal, transmits a Send Routing Information (SRI) signal for querying a location of the service providing apparatus to the HLR, and transmits the IDP signal to the SCP based on a SRI response signal received in response to the SRI signal; transmits a call connection response signal to the MSC in response to the call connection request signal, wherein the MSC transmits a first call setup response signal to the calling terminal in response to the call connection response signal; sets up a first voice and video channel with the calling terminal based on the call connection response signal and the first call setup response signal; transmits a first Assist Request Instructions (ARI) signal for fetching a temporary number corresponding to the calling terminal to the SCP; receives a first Play Announcement (PA) signal, including the temporary number corresponding to the calling terminal, from the SCP in response to the first ARI signal; receives a video message from the calling terminal based on the temporary number of the calling terminal and the first voice and video channel; stores the video message; releases the first voice and video channel; transmits an outbound call request signal to the MSC to set up a connection to the called terminal, wherein the MSC transmits a second call setup request signal to the called terminal in response to the outbound call request signal, and receives a second call setup response signal in response thereto; receives an outbound call response signal from the MSC in response to the second call setup response signal; sets up a second voice and video channel with the called terminal based on the second call setup response signal and the outbound call response signal; transmits a second ARI signal for requesting video message information to the SCP; receives a second PA signal, including the video message information, transmitted in response to the second ARI signal; and transmits the video message to the called terminal based on the second PA signal.

[36] According to another aspect of the present invention, there is provided a service providing apparatus for transmitting video messages, the service providing apparatus being connected to a calling terminal, an MSC, an HLR, an SCP and a called terminal via a W-CDMA network, the service providing apparatus comprising: memory for storing a program; and a processor for executing the program in conjunction with the memory; wherein the processor, using the program, receives a first call connection request signal from the MSC, wherein the first call connection request signal corresponds to a first FCI signal and a first ETC signal, which are received by the MSC from the SCP in response to a first IDP signal for a video message transmission service when the MSC receives a first call setup request signal from the calling terminal, transmits a first SRI signal for querying a location of the service providing apparatus to the HLR, and transmits the first IDP signal to the SCP based on a first SRI response signal received in response to the first SRI signal; transmits a first call connection response signal to the MSC in response to the first call connection request signal, wherein the MSC transmits a first call setup response signal to the calling terminal in response to the first call connection response signal; sets up a first voice and video channel with the calling terminal based on the first call connection response signal and the first call setup response signal; transmits a first ARI signal, for fetching a temporary number corresponding to the calling terminal, to the SCP; receives a first PA signal, including the temporary number corresponding to the calling terminal, from the SCP in response to the first ARI signal; receives a video message from the calling terminal based on the temporary number of the calling terminal and the first voice and video channel; stores video message; releases the first voice and video channel; transmits a callback SMS message to the called terminal, wherein the called terminal transmits a second call setup request signal to the MSC using the callback SMS message to set up a call connection to the service providing apparatus, and the MSC transmits a second SRI signal for querying a location of the service providing apparatus to the HLR in response to the second call setup request signal, transmits a second IDP signal for a video message transmission service to the SCP based on a second SRI response signal received in response to the second SRI signal, and receives a second FCI signal and a second ETC signal from the SCP in response to the second IDP signal; receives a second call connection request signal from the MSC in response to the second FCI signal and the second ETC signal; transmits a second call connection response signal to the MSC in response to the second call connection request signal, wherein the MSC transmits a second call setup response signal to the called terminal in response to the second call connection response signal; sets up a second voice and video channel with the calling terminal based on the second call connection response signal and the second call setup response signal; transmits a second ARI signal, for requesting video message information, to the SCP; receives a second PA signal, including the video message information, transmitted in response to the second ARI signal; and transmits the video message to the called terminal based on the second PA signal.

[37] According to another aspect of the present invention, there is provided a service providing apparatus for transmitting video messages, the service providing apparatus being connected to a calling terminal, a called terminal, an calling side MSC and an called side MSC via a W-CDMA network, the service providing apparatus comprising: memory for storing a program; and a processor for executing the program in conjunction with the memory; wherein the processor, using the program, receives a first call connection request signal from the calling side MSC, wherein the first call connection request signal corresponds to a first call setup request signal, which is transmitted from the calling terminal to the calling side MSC to set up a telephone call to the called terminal; transmits a second call connection request signal to the called side MSC in response to the first call connection request signal; receives a first call connection response signal from the called side MSC in response to the second call connection request signal; transmits a second call connection response signal to the calling side MSC in response to the first call connection response signal; sets up a first voice and video channel with the called side MSC based on the first call connection response signal; sets a second voice and video channel with the calling side MSC based on the second call connection response signal; receives a guidance announcement from the called side MSC; transmits the guidance announcement to the calling terminal; receives a DTMF signal for video message transmission from the calling terminal according to the guidance announcement; releases the first voice and video channel; transmits a message for video message transmission to the calling terminal; receives a video message from the calling terminal according to the message for video message transmission; stores the video message; releases the first voice and video channel; transmits an outbound call request signal to the MSC for connection to the called terminal, wherein the MSC transmits a second call setup request signal to the called terminal in response to the outbound call request signal, and receives a second call setup response signal in response thereto; receives an outbound call response signal from the MSC in response to the second call setup response signal; sets up a second voice and video channel with the called terminal based on the second call setup response signal and the outbound call response signal; and transmits the video message to the called terminal via the second voice and video channel.

Advantageous Effects

[38] According to the present invention, there is provided a method and apparatus in which a calling subscriber leaves a video and voice message for a called subscriber or a plurality of members belonging to a group without directly conversing with them, and the video and voice message is transmitted to the called subscriber or the members belonging to the group over a W-CDMA network.

[39] Furthermore, according to the present invention, there is provided a method and apparatus for viewing and listening to a video message from a calling party, and immediately leaving a response message for the calling subscriber and transmitting the response message to the calling party, or performing a function such as direct video communication with the calling party.

[40] Furthermore, according to the present invention, there is provided a method and apparatus for providing a method of accessing WEB or WAP in addition to a W- CDMA network, thereby recording video messages, and checking and storing messages which have already been checked or have not been checked.

[41] Furthermore, the present invention may be utilized for a mobile phone customer, who is not familiar with the use of SMS messages, to transmit messages to a called subscriber using video and voice without conversing with the called subscriber.

[42] Furthermore, the present invention may be utilized to transmit a congratulatory message on an anniversary or the like using video and voice. For sentimental or affectionate expressions which are difficult to express via direct video/voice communication, a video and voice message can be easily transmitted to a called subscriber.

[43] Furthermore, according to the present invention, when there is content to be simultaneously transmitted to a number of persons who belong to an association of like- minded persons or who work for the same company, a video and voice message can be broadcast using group message transmission service.

[44] Furthermore, according to the present invention, a called subscriber can store received video messages in his or her message box and repeatedly check the received video messages.

[45] Furthermore, according to the present invention, a called party can make a response to a calling party after checking the message received from the calling party. That is, after checking the video message transmitted from the calling party, the called party can immediately leave a message for the calling party and transmit a response message to the calling party.

[46] Furthermore, according to the present invention, a called party can set up a call connection to a calling party immediately after viewing and listening to a message received from the calling party. That is, after viewing and listening to the video message, the called party can immediately request a call connection from a calling party using a calling number received at the time of receiving the video message.

[47] Furthermore, according to the present invention, a called party can transmit an SMS or MMS message to a calling party after viewing and listening to a message received from the calling party. That is, after viewing and listening to the video message, the called party can request a calling party call using a calling number received at the time of receiving the video message. Brief Description of the Drawings

[48] FIG. 1 is a diagram illustrating the construction of an apparatus for transmitting video messages according to a preferred embodiment of the present invention;

[49] FIG. 2 is a flowchart schematically illustrating a method of transmitting video messages according to a preferred embodiment of the present invention;

[50] FIG. 3 is a view illustrating a method in which a calling terminal accesses a service providing apparatus according to a preferred embodiment of the present invention;

[51] FIG. 4 is a view illustrating a method in which the calling terminal accesses the service providing apparatus according to another embodiment of the present invention;

[52] FIG. 5 is a signal flowchart illustrating a process in which the calling terminal accesses the service providing apparatus according to another preferred embodiment of the present invention;

[53] FIG. 6 is a view illustrating a method in which the calling terminal accesses the service providing apparatus by modifying or upgrading a telephone directory menu in the calling terminal according to a preferred embodiment of the present invention;

[54] FIG. 7 is a view illustrating a method in which the calling terminal accesses the service providing apparatus by modifying the text message box menu of a calling terminal according to a preferred embodiment of the present invention;

[55] FIG. 8 is a view illustrating a method in which a calling terminal directly accesses the service providing apparatus using the hot key of the calling terminal according to a preferred embodiment of the present invention;

[56] FIG. 9 is a signal flowchart illustrating a procedure of transmitting a video message via an outbound call using a service node method according to a preferred embodiment of the present invention; [57] FIG. 10 is a signal flowchart illustrating a procedure of transmitting a video message via a callback message using a service node method according to a preferred embodiment of the present invention; [58] FIG. 11 is a signal flowchart illustrating a procedure of transmitting a video message via an outbound call using an intelligent network method according to a preferred embodiment of the present invention; [59] FIG. 12 is a signal flowchart illustrating a procedure of transmitting a video message via a callback message using an intelligent network method according to a preferred embodiment of the present invention; [60] FIG. 13 is a signal flowchart illustrating a procedure in which a called subscriber checks a received voice message and then makes a response to a calling subscriber according to a preferred embodiment of the present invention; [61] FIG. 14 is a signal flowchart illustrating a procedure in which the called subscriber checks a received voice message and then directly accesses the calling subscriber according to a preferred embodiment of the present invention; [62] FIG. 15 is a signal flowchart illustrating a procedure in which the called subscriber checks a received voice message and then pages the calling subscriber according to a preferred embodiment of the present invention; [63] FIG. 16 is a view illustrating the construction of a system for checking the state of a called subscriber according to a preferred embodiment of the present invention; [64] FIG. 17 is a signal flowchart illustrating a procedure of checking the state of a called terminal by querying a Service Control Point (SCP) according to a preferred embodiment of the present invention; [65] FIG. 18 is a signal flowchart illustrating a procedure of checking the state of a called terminal using an Address Complete Message (ACM) according to a preferred embodiment of the present invention; [66] FIG. 19 is a signal flowchart illustrating a procedure of checking the state of a called terminal using a Call Progress (CPG) message according to a preferred embodiment of the present invention; [67] FIG. 20 is a signal flowchart illustrating a process in which a calling subscriber accesses the 3G-Intelligent Peripheral (IP) of a service providing apparatus, sets up a voice and video channel, and stores a voice message to be transmitted to a called subscriber according to a preferred embodiment of the present invention; [68] FIG. 21 is a signal flowchart illustrating a process in which a calling subscriber transmits a recorded video message to a called subscriber according to a preferred embodiment of the present invention; [69] FIG. 22 is a signal flowchart illustrating a procedure of transmitting a video and voice message between terminals supporting 3G over a 3G network according to a preferred embodiment of the present invention; [70] FIG. 23 is a signal flowchart illustrating a procedure of transmitting a video message from a terminal that supports 3G to an existing terminal that does not support

3G according to a preferred embodiment of the present invention; [71] FIG. 24 is a signal flowchart illustrating a procedure of transmitting a voice message from a calling terminal that does not support 3G to a calling terminal that supports 3G according to a preferred embodiment of the present invention; [72] FIG. 25 is a flowchart illustrating a scenario of a process in which the calling terminal records and transmits a video message to be transmitted to a called terminal according to a preferred embodiment of the present invention; [73] FIG. 26 is a flowchart illustrating a scenario of a process of viewing and listening to a voice message through a called terminal according to a preferred embodiment of the present invention; [74] FIG. 27 is a flowchart illustrating a scenario of a process of viewing and listening to a video message and making a response through a called terminal according to a preferred embodiment of the present invention; [75] FIG. 28 is a view of an example of the screen of the calling terminal illustrating a group video message transmission service according to a preferred embodiment of the present invention; [76] FIG. 29 is a view showing an example of the screen of the mobile terminal for querying a video message history according to a preferred embodiment of the present invention; [77] FIG. 30 is a view showing an example of the screen of the called terminal for managing received video messages according to a preferred embodiment of the present invention; [78] FIG. 31 is a view showing an example of the screen of the mobile terminal for managing a group directory according to a preferred embodiment of the present invention; [79] FIG. 32 is a view showing an example of the screen of the mobile terminal for setting a video message service environment according to a preferred embodiment of the present invention; [80] FIG. 33 is a view showing an example of an Internet screen for querying a video message history according to a preferred embodiment of the present invention; [81] FIG. 34 is a view showing an example of an Internet screen for managing received video messages according to a preferred embodiment of the present invention; [82] FIG. 35 is a view showing an example of an Internet screen for managing a video message group directory according to a preferred embodiment of the present invention; [83] FIG. 36 is a view showing an example of an Internet screen for setting a nickname according to a preferred embodiment of the present invention; [84] FIG. 37 is a view showing an example of an Internet screen for changing a password according to a preferred embodiment of the present invention; [85] FIG. 38 is a view showing an example of an Internet screen for setting response video message charges according to a preferred embodiment of the present invention; [86] FIG. 39 is a flowchart illustrating a main Interactive Voice Response (IVR) scenario for managing video messages according to a preferred embodiment of the present invention; [87] FIG. 40 is a flowchart illustrating an IVR scenario for a video message history query according to a preferred embodiment of the present invention; [88] FIG. 41 is a flowchart illustrating an IVR scenario for managing received video messages according to a preferred embodiment of the present invention; [89] FIG. 42 is a flowchart illustrating an IVR scenario for setting a video message environment according to a preferred embodiment of the present invention; [90] FIG. 43 is a view illustrating a procedure in which a calling subscriber uses the present service by inputting a DTMF when the called subscriber does not answer a telephone call or is switched to a VMS while attempting video communication according to a preferred embodiment of the present invention; [91] FIG. 44 is a signal flowchart illustrating a procedure in which a calling subscriber enters the present service by inputting a DTMF when the called subscriber does not answer a telephone call or is switched to a VMS while attempting video communication according to a preferred embodiment of the present invention; [92] FIG. 45 is a view illustrating a procedure in which a calling subscriber uses a video message transmission service using a feature code, or WAP menus such as ME/KUN; [93] FIG. 46 is a view showing an example of a screen for a function of scheduled transmission of a video message through the WEB according to a preferred embodiment of the present invention; [94] FIG. 47 is a view showing an example of the screen of a mobile terminal for scheduled transmission of a video message through a WAP according to a preferred embodiment of the present invention; and [95] FIG. 48 is a view illustrating a WEB interface for transmitting a video message via the WEB according to a preferred embodiment of the present invention.

Best Mode for Carrying Out the Invention [96] With reference to the accompanying drawings, preferred embodiments of the present invention will be described in detail. [97] FIG. 1 is a diagram shows the construction of an apparatus for transmitting video messages according to a preferred embodiment of the present invention.

[98] Referring to FIG. 1, the video message transmission system includes 2G/2.5G user terminals 101, a PCX network 104, 3G user terminals 103, an IMX network 110, a service providing apparatus 120, the Internet 131, WAP users 133, WEB users 135, an SCP 113, an IDR, an SMS message center (SMSC) 117 and a Juice gateway (GW) 119. The 2G/2.5G user terminals 101 refer to voice call-based CDMA or W-CDMA terminals, and the 3G user terminals 103 refer to terminals that support video and voice calls. The PCX network 104 includes a Mobile Switching Center (MSC) 105 and a Home Location Register (HLR) 107, and functions to route the calls of subscribers. The IMX network 110 includes an IMT-2000 Mobile Switching Center (MSC) 109 capable of routing and processing 3G video and voice calls and a 3G HLR 111, separate from the 2G HLR 107.

[99] The service providing apparatus 120 includes a 2G-IP 121, a 3G-IP 123, an MTS

125, OMS client PCs 127, an Operation Administration and Management (OA &M) server (OMS) 129, a database server 131, a RAID 133, a TTS server 135, an Application Plus Server (APS) 137, and a WEBAVAP (ME) Access Server (WWAS) 139.

[100] The 3G-IP 123 functions to store a video and voice message therein, and transmit the messages to a called subscriber. The 2G-IP 121 is an Intelligent Peripheral (IP), which is the basis of the apparatus according to the present invention, and functions to store and transmit the voice messages of 2G/2.5G subscribers. The MTS 125 is an auxiliary device for making the 2G-IP 121 and the 3G-IP 123 operate in conjunction with each other, and is called a Multimedia Trans-coding Server (MTS). The MTS 125 functions to convert a 2G/2.5G PCM or ADPCM file into a 3G AMR or G.723.1 file and vice versa, and also to integrate a resulting AMR or G.723.1 file and a basic video file into a single 3GP file.

[101] The WWAS 139 is an apparatus capable of processing directory management for subscribers, including a message transmission group, and history management for the present service via the WEB or wireless Internet. The Database Server (DBS) 131 is an apparatus for storing and managing data, such as subscriber information, video message information and called party information, used for the present apparatus.

[102] The RAID 133 refers to an apparatus for redundantly storing the same important data in several storage devices. If the RAID 133 is employed, data input and output work can be balanced and overlap each other, thus improving the performance of the overall system. The APS 137 performs SMS message transmission, billing, subscriber registration/authentication, pre-paid subscriber authentication and subscriber number transmission processing functions in conjunction with the SMSC 117, a Billing System (BS), a Customer Care System (CS) and a Number Portability Data Base (NPDB), which are managed by a service provider providing the present service. [103] The SCP 113 is an apparatus having service logic at the time of processing the present service via an intelligent network, and processes the service in cooperation with the APS. The OMS 129 is an apparatus capable of operating and managing the apparatus of the present invention.

[104] FIG. 2 is a flowchart schematically illustrating a method of transmitting video messages according to a preferred embodiment of the present invention.

[105] Referring to FIG. 2, a calling terminal first sets up a call connection to the service providing apparatus to record a video message to be transmitted to a called terminal at step 201. In the present invention, methods of accessing the service providing apparatus to record a video message may be classified into three methods. The first method is a method in which a subscriber presses a feature code and a called number, that is, the telephone number of the called terminal, and then presses a call button in the same manner as in the conventional voice communication method. The second method is a method of pressing a called number and then using the wireless Internet key of a mobile phone. The third method is a method of using the menu or hot key of a mobile phone terminal. The third method corresponds to a concept of using a shortcut key on the mobile phone terminal, and it may be considered to belong to the first method in the broad sense because it is the same as the second method in terms of the signal flow through the mobile communication network. The first access method is described in detail with reference to FIG. 3 below, the second access method is described in detail with reference to FIGS. 4 and 5 below, and the third access method is described in detail with reference to FIGS. 6 to 8 below.

[106] The calling terminal connects to the service providing apparatus and records the video message, which will be transmitted to the called terminal, based on a guidance announcement of the service providing apparatus after step 203.

[107] Thereafter, the service providing apparatus sets up a call connection to the called terminal to transmit the voice message to the called terminal at step 205. Methods in which the service providing apparatus sets up a call connection to the called terminal may be classified into a method using a service node, and a method using an intelligent network. Each of the methods includes a method of transmitting an outbound call to the called terminal, and a method of transmitting a callback SMS message to the called terminal and then receiving callback from the called terminal.

[108] When the setup of the call connection is completed between the service providing apparatus and the called terminal, the called subscriber can view and listen to the video message, received from the calling subscriber, through the service providing apparatus at step 207.

[109] Thereafter, when the user of the called terminal checks the video message and responds according to the guidance announcement provided from the service providing apparatus in order to make a response to the received video message, the service providing apparatus provides a response service corresponding to the response at step 209. The type of response service includes a video message response service, a quick connection service and a calling party call service. The response service is described in detail with reference to FIGS. 13 to 15 below.

[110] FIG. 3 is a view illustrating a method in which the calling terminal accesses the service providing apparatus according to a preferred embodiment of the present invention. In this drawing, a process in which a calling subscriber processes a message transmission service function by directly inputting a feature code for the present service and a called number is illustrated.

[I l l] Referring to FIG. 3, if a calling subscriber presses a feature code + a called number

+ a call button to set up a call connection to the service providing apparatus, the calling terminal attempts a call connection to the IMX at step 301. The IMX receives information about "the feature code + the called number" and transmits a feature request signal to the HLR at step 303. The feature request signal is a signal requesting routing address information corresponding to the feature code. The HLR checks a corresponding service and transmits a feature response signal to the IMX at step 305. The feature response signal includes the routing address of the service providing apparatus IP or the SCP. The IMX transmits a corresponding incoming call to the SCP or the IP of the service providing apparatus based on the received routing address at step 307.

[112] FIG. 4 is a view illustrating a method in which the calling terminal accesses the service providing apparatus according to another embodiment of the present invention. The access method described in this drawing is a method of pressing a called number and then using the wireless Internet key of a mobile phone, and follows a routing procedure in which a calling subscriber selects a message transmission service menu item from a WINK wireless Internet page and a call related to the message transmission service is connected to a corresponding service apparatus.

[113] Referring to FIG. 4, a calling subscriber first accesses the WWAS of the service providing apparatus 120 by pressing a telephone number and a wireless Internet access button (for example, a Magic-n key, a Nate key, or an EZ-i key) of a called terminal at step 401. This process is a process in which the calling subscriber accesses the present system using a WINK method through the wireless Internet network of a mobile service provider.

[114] Thereafter, the service providing apparatus 120 transmits and outputs a wireless

Internet page, which enables a functional call with a called terminal, to the calling subscriber at step 403. In this case, the wireless Internet page can include respective menu items for supplementary voice service. Each of the menu items includes a telephone number in WML or ME code, through which a call can be made to the service providing apparatus 120. For example, a video message transmission service menu item includes Tel Tag corresponding to #+<a called number>.

[115] Thereafter, when the calling subscriber selects the message transmission service menu item, the currently established connection to the wireless Internet is released, and a video call to the IMX or MSC is attempted at step 405. The MSC requests the routing of the corresponding call from the HLR at step 407. The HLR analyzes a received telephone number (a message transmission service feature code or an ARS representative number) and transmits routing information to the MSC at step 409. Thereafter, the MSC routes the call of the message transmission service to the 3G-IP of the service providing apparatus based on the routing information at step 411.

[116] FIG. 5 is a signal flowchart illustrating a process in which the calling terminal accesses the service providing apparatus according to another preferred embodiment of the present invention. FIG. 5 is a detailed illustration of FIG. 4, and illustrates a procedure in which a calling subscriber accesses the wireless Internet to use the video transmission service of the present invention, and then attempts video message transmission. This procedure may be changed according to the internal network or service procedure of a service provider.

[117] Referring to FIG. 5, if the calling subscriber presses the telephone number of the called terminal and a wireless Internet access button (for example, a Magic-n key, a Nate key or an EZ-i key), the calling terminal transmits a wireless Internet access request signal to the WWAS of the service providing apparatus at step 501. The service providing apparatus transmits a wireless Internet page, which enables a functional call with the called subscriber, to the calling terminal, and the calling terminal outputs the wireless Internet page to a display unit at step 503. If the calling subscriber selects a menu item for the video message transmission service, the calling terminal transmits a service request signal to the service providing apparatus at step 505. Thereafter, the currently established connection to the wireless Internet is released because a video and voice message must be received for the message transmission service at step 507. The calling terminal transmits a call connection request signal to the MSC in order to access the service providing apparatus at step 509.

[118] FIGS. 6 to 8 are views illustrating a method in which the calling terminal accesses the service providing apparatus according to further preferred embodiments of the present invention. The access methods of FIGS. 6 to 8 use a mobile phone terminal's own functions. These methods may be considered to belong to the access method which has been described with reference to FIG. 3 in that they use the hot key or menu of the mobile phone terminal without requiring direct input of a feature code for the video message service.

[119] FIG. 6 is a view illustrating a method in which the calling terminal accesses the service providing apparatus by modifying or upgrading a telephone directory menu in the calling terminal according to a preferred embodiment of the present invention.

[120] Referring to FIG. 6, by inserting a wireless Internet access menu, provided in a

WINK menu method, into the telephone number menu provided in the mobile phone terminal of the calling subscriber, it is possible to directly attempt a call to the IMX without accessing the menu of the wireless Internet. That is, the method described with reference to FIG. 6 is a method of adding a video message menu item for the message transmission service to an existing menu (for example, "1. Modify," "2. Delete," "3. Multiple mail transmission," and "4. E-mail transmission") provided on a telephone directory screen 601, which has been selected using a menu item "search by name", "search by number", "search by shortcut number", "search by voice", "search by group", "search by time", or the like.

[121] In the case where the calling subscriber selects the video message menu item from a new telephone directory menu screen 603, the terminal adds a feature code, corresponding to the message transmission service, before the called party telephone number of the telephone directory. That is, when the calling subscriber selects the message transmission menu item, the mobile phone terminal attempts a call by transmitting a feature code (for example, # or *01) for the message transmission service and the telephone number of the called subscriber to the IMX.

[122] FIG. 7 is a view illustrating a method in which the calling terminal accesses the service providing apparatus through a modification to the text message box menu of a calling terminal according to a preferred embodiment of the present invention.

[123] Referring to FIG. 7, by inserting a video message transmission menu into the message box menu of the message box of the mobile phone terminal of a calling subscriber instead of using the wireless Internet access menu item provided in the WINK menu method described with reference to FIG. 4, it is possible to directly attempt a call to the IMX without needing to access the menu of the wireless Internet. That is, the method described in this drawing is a method of adding a menu item for message transmission to an existing menu (for example, "1. Response," "2. Resend," "3. Delete," and "4. Store telephone number") provided for a text message selected from the message box screen of the mobile phone terminal. When the calling subscriber selects a menu from a message box screen 701, the terminal outputs a new menu screen 703 onto the display unit. When the video message menu item for the video message transmission is selected by the calling subscriber, the terminal adds a feature code, corresponding to the message transmission service, before the telephone number of a called subscriber included in an SMS message. That is, when the calling subscriber selects the message transmission menu item, the mobile phone terminal attempts a call by transmitting a feature code (for example, # or *01) for the message transmission service and the telephone number of the called subscriber to the IMX.

[124] FIG. 8 is a view illustrating a method in which a calling terminal directly accesses the service providing apparatus using the hot key of the calling terminal according to a preferred embodiment of the present invention.

[125] Referring to FIG. 8, by newly adding a hot key to the mobile phone terminal of a calling subscriber instead of using the wireless Internet access menu item provided in the WINK menu method described with reference to FIG. 4, inputting the telephone number of the called subscriber, and pressing the hot key, the calling subscriber can directly attempt a call to the IMX without needing to access the menu of the wireless Internet. When a hot key button 803 is input in a state in which the telephone number of the called terminal has been input (see reference numeral 801), the calling terminal adds a feature code, corresponding to the video message transmission service, before the telephone number of the called terminal. That is, when the telephone number of the called terminal is input and the hot key button 803 is pressed, the calling terminal attempts a call by transmitting a feature code (for example, # or *01) for the video message transmission service and the telephone number of the called subscriber to the IMX.

[126] As described above in conjunction with FIGS. 3 to 8, the message transmission service may be used through various access methods. That is, methods of performing the message transmission service in the wireless communication network through the access procedure include an access method using a wireless communication network system and a service node, and an access method using an intelligent network. The access method using the service node will be described with reference to FIGS. 9 and 10 below, and the access method using the intelligent network will be described with reference to FIGS. 11 and 12 below.

[127] FIG. 9 is a signal flowchart illustrating a procedure of transmitting a video message via an outbound call using the service node method according to a preferred embodiment of the present invention. The drawing illustrates a procedure in which the calling terminal accesses the service providing apparatus using the service node method and stores a video message, and the service providing apparatus receives a video message from the calling subscriber, directly processes an outbound call, and transmits the video message to a called terminal. The present procedure may be changed according to the internal network or service procedure of a service provider.

[128] Referring to FIG. 9, a calling subscriber transmits a call setup request signal, including a feature code and a called number, to the IMX in order to leave a video message at step 901. The IMX transmits Send Routing Information (SRI) to the HLR (3G-HLR) in order to query the location of the IMX to which the 3G-IP belongs at step 903. The HLR transmits an SRI response signal, including information about the position of the IMX to which the 3G-IP belongs, to the IMX at step 905. The IMX transmits a call connection request signal, including a calling number and a called number, to the 3G-IP of the service providing apparatus with reference to the information provided by the HLR at step 907. The 3G-IP of the service providing apparatus transmits a call connection response signal to the IMX at step 909. When the call connection response signal is received, the IMX transmits a call setup response signal to the calling subscriber at step 911. Thereafter, the 3G-IP of the service providing apparatus then sets up a voice and video channel (3G-324M Video/ Audio Negotiation) between the calling subscriber and the 3G-IP at step 913.

[129] The 3G-IP outputs a video service guidance announcement or a voice service guidance announcement to the calling terminal at step 915. Here, an example of the guidance announcement may be "This is a video message transmission service provided by KTF (SKT/LGT). Please start recording after the 'beep' sound, and press * or # after recording. Beep." The guidance announcement may be output along with video information.

[130] Thereafter, the calling subscriber records a message to be transmitted to the called subscriber at step 917. In this case, a process in which the 3G-IP of the service providing apparatus plays a guidance announcement (for example, "We will transmit your message. Thank you for using this service," to the calling subscriber after recording the video message, may be further included.

[131] The 3G-IP of the service providing apparatus transmits message information (a calling party number, a called party number, time information, etc.) and the video message, which have been left by the calling subscriber, to the APS and the DBS, so that they can be stored in the storage device of the service providing apparatus at step 919. Thereafter, the 3G-IP transmits a call release signal to the IMX at step 921, and the IMX transmits the call release signal to the calling subscriber at step 923.

[132] Thereafter, the APS of the service providing apparatus internally fetches data to be transmitted from the DBS in order to transmit data, stored by the calling subscriber, to the called subscriber at step 925. This procedure is performed immediately after the calling subscriber leaves the video message. However, since this procedure must be attempted again if the called subscriber does not answer the telephone call, the service providing apparatus internally calculates a call for which an outbound call will be made, and the time when the outbound call will be made. The APS requests the outbound call from the 3G-IP in order to transmit the video message to the called subscriber at step 927. The 3G-IP attempts the outbound call to the IMX connected via El or Tl at step 929.

[133] The IMX makes the call setup request to the called subscriber at step 931. A new subscriber transmits a call response signal to the IMX in response to a video com- munication call at step 933.

[134] The IMX transmits an answer signal to the 3G-IP at step 935. The 3G-IP of the service providing apparatus sets up a voice and video channel between the called subscriber and the 3G-IP at step 937. The 3G-IP of the service providing apparatus fetches the video message, which was left by the calling subscriber and stored in the DBS, and outputs the fetched video message to the called subscriber at step 939.

[135] The 3G-IP plays the video message to be transmitted and then transmits a call release signal to the IMX at step 941. In the case where the called subscriber views and listens to the message received from the calling subscriber and then desires to make a response without releasing the call, the response video message may be transmitted to the calling subscriber. The IMX transmits the call release signal to the called subscriber at step 943.

[136] The 3G-IP transmits a message, indicating that the called subscriber has received, viewed and listened to the message transmitted by the calling subscriber, to the APS at step 945. The APS transmits a text message, for example, "[The video message] has been transmitted to [a called party's telephone number or name]", to the SMSC at step 947.

[137] The SMSC transmits the corresponding text message to the calling subscriber at step 949. At steps 947 and 949, the APS may transmit a Multimedia Messaging Service (MMS) message to the calling subscriber instead of the SMS message. The APS transmits billing information (CDR) to the billing system to perform billing after the termination of a corresponding service at step 951.

[138] Although the 3G-IP, the DBS and the APS have been illustrated as being separate in order to provide detailed descriptions of respective functions, they are all elements of the service providing apparatus and the respective functions of the constituent elements may be performed in a service providing apparatus which is a single apparatus.

[139] FIG. 10 is a signal flowchart illustrating a procedure of transmitting a video message via a callback message using the service node method according to a preferred embodiment of the present invention.

[140] This drawing illustrates a procedure in which, using the service node method, the calling terminal accesses the service providing apparatus and stores a video message, and the service providing apparatus receives a video message from the calling subscriber and transmits a callback SMS message to the called subscriber, thereby transmitting the video message. This procedure may be changed according to the internal network or service procedure of a service provider.

[141] Referring to FIG. 10, the calling subscriber transmits a call setup request signal, including a feature code and a called number, to the IMX in order to set up a call connection to leave a video message at step 1001. The IMX receives the feature code and the called number, and transmits SRI to the HLR (3G-HLR) in order to query the location of the IMX to which the 3G-IP belongs at step 1003. The HLR transmits an SRI response signal, including information about the position of the IMX to which the 3G-IP belongs, to the IMX at step 1005.

[142] The IMX transmits a call connection request signal, including a calling number and a called number, to the 3G-IP with reference to information about the position of the IMX to which the 3G-IP belongs, which has been received from the HLR, at step 1007. The 3G-IP transmits a call connection response signal corresponding to a call response to the IMX at step 1009.

[143] The IMX transmits a call setup response signal to the calling subscriber at step

1011. The 3G-IP sets up a voice and video channel (3G-324M Video/Audio Negotiation) between the calling subscriber and the 3G-IP at step 1013.

[144] The 3G-IP outputs a service video guidance announcement or a voice guidance announcement to the calling terminal at step 1015. An example of this guidance announcement can include "This is a video message transmission service provided by KTF (SKT/LGT). Please start recording after the 'beep' sound, and press * or # after recording. Beep." The guidance announcement can be output along with video information. Thereafter, the calling subscriber records a message to be transmitted to the called subscriber at step 1017. At this time, the 3G-IP of the service providing apparatus may further include a process of transmitting a guidance announcement (for example, "We will transmit your message. Thank you for using this service.") to the calling subscriber after video recording.

[145] The 3G-IP transmits message information (a calling party number, a called party number, time information, etc.) and a video message, which have been left by the calling subscriber, to the APS and the DBS so that they can be stored in the storage device at step 1019. Thereafter, the 3G-IP transmits a call release signal to the IMX at step 1021, and the IMX transmits the call release signal to the calling subscriber at step 1023.

[146] Thereafter, the APS internally fetches data, to be transmitted, from the DBS in order to transmit data, which will be internally stored by the calling subscriber, to the called subscriber at step 1025. The ASP server transmits a callback text message (SMS), informing the called subscriber of the reception of the video message, to the SMSC at step 1027. The SMSC transmits the corresponding text message (SMS) to the called subscriber at step 1029. At steps 1027 and 1029, the APS may transmit the callback message to the called subscriber via an MMS message instead of an SMS message.

[147] The called subscriber that has received the callback message becomes aware that it is message transmission service, and attempts a call to the IMX by pressing the call button at step 1031. At this time, since the callback message includes a callback number for accessing the 3G-IP, the called subscriber can access the 3G-IP of the service providing apparatus when he or she presses a call button. The IMX checks the received callback number and routs a call to the 3G-IP at step 1033. The 3G-IP transmits an answer signal, corresponding to a call response, to the IMX at step 1035. The IMX makes a call response to the called subscriber at step 1037. The 3G-IP sets up a voice and video channel between it and the called subscriber at step 1039.

[148] The 3G-IP becomes aware that the corresponding call is an incoming call for checking a message, fetches the video message left by the calling subscriber and stored in the DBS, and transmits the video message to the called subscriber at step 1041. The 3G-IP plays the entire video message to be transmitted and transmits the call release signal to the IMX at step 1043. In the case where a called subscriber views and listens to the message from the calling party and tries to make a response without releasing the call, the response video message can be transmitted to the calling subscriber. The IMX transmits the call release signal to the called subscriber at step 1045.

[149] The 3G-IP reports information (message), indicating that the called subscriber has received, viewed and listened to the message transmitted by the calling subscriber, to the APS at step 1047. The APS transmits a text message, for example, "[The video message] has been transmitted to [a called party's telephone number or name]", to the SMSC at step 1049. The SMSC transmits the corresponding text message to the calling subscriber at step 1051. At steps 1049 and 1051, the APS may transmit an MMS message to the calling subscriber instead of the SMS message. The APS transmits billing information (CDR) to the billing system to perform billing after the termination of the corresponding service at step 1053.

[150] In this case, although the 3G-IP, the DBS and the APS have been illustrated as being separate in order to give detailed descriptions of respective functions, they are all elements of the service providing apparatus, and thus respective functions of the elements may be performed in a service providing apparatus which is a single apparatus.

[151] FIG. 11 is a signal flowchart illustrating a procedure of transmitting a video message via an outbound call using an intelligent network method according to a preferred embodiment of the present invention.

[152] This drawing illustrates a procedure in which, using the intelligent network method, the calling terminal accesses the service providing apparatus and stores a video message therein, and the service providing apparatus receives a video message from the calling subscriber and transmits a callback SMS message to the called subscriber, thereby transmitting the video message. This procedure may be changed according to the internal network or service procedure of a service provider. [153] Referring to FIG. 11, the calling subscriber transmits a call setup request signal, including a feature code and a called number, to the IMX in order to set up a call connection to leave a video message at step 1101. The IMX receives the feature code and the called number, and transmits SRI in order to query the location of the IMX, to which the 3G-IP belongs, to the HLR (3G-HLR) of the calling party at step 1103. The HLR transmits an SRI response signal, including information about the position of the IMX to which the 3G-IP belongs, to the IMX at step 1105.

[154] The IMX transmits an Initial Detection Point (IDP) to the SCP for providing the video message transmission service on the basis of the information received from the HLR at step 1107. At this time, the IDP signal is a signal for querying the place to which the corresponding calling call will be routed. The SCP becomes aware that a corresponding call is related to the video message transmission service, and transmits FCI and ETC messages requesting call setup from the IMX at step 1109. This FCI message is a message for generating billing information based on CDR information. The IMX transmits the call connection request signal to the 3G-IP based on the FCI and ETC messages received from the SCP, thereby attempting a call at step 1111. The 3G-IP makes a call response to the IMX for the received call at step 1113. The IMX makes a call response to the calling subscriber at step 1115. The 3G-IP sets up a voice and video channel between it and the calling subscriber at step 1117.

[155] The 3G-IP transmits Assist Request Instructions (ARI) to the SCP in order to fetch a prompt number to be provided to the calling subscriber at step 1119. The SCP transmits the prompt number, which will be provided to the calling subscriber, to the 3G-IP using a Play Announcement (PA) at step 1121.

[156] The 3G-IP outputs a service video guidance announcement or a voice guidance announcement to the calling terminal at step 1123. An example of the guidance announcement may be "This is a video message transmission service provided by KTF (SKT/LGT). Please start recording after the 'beep' sound, and press * or # after recording. Beep." The guidance announcement can be output along with video information.

[157] Thereafter, the calling subscriber records a message to be transmitted to the called subscriber at step 1125. At this time, the 3G-IP of the service providing apparatus may further include a process of transmitting a guidance announcement (for example, "We will transmit your message. Thank you for using this service.") to the calling subscriber after video recording.

[158] The 3G-IP transmits message information (a calling party number, a called party number, time information, etc.) and a video message, which have been left by the calling subscriber, to the APS and the DBS so that they can be stored in the storage device at step 1127. The 3G-IP may transmit a Specialized Resource Report (SRR) signal, providing notification of the stored content, to the SCP, if necessary, at step 1129. The 3G-IP transmits the call release signal to the IMX at step 1131. The IMX transmits the call release signal to the calling subscriber at step 1133.

[159] The APS fetches data, which will be transmitted, from the DBS, in order to transmit data internally stored by the calling subscriber to the called subscriber at step 1135. This procedure is performed immediately after the calling subscriber leaves the video message. However, since the procedure must be attempted again when the called subscriber fails to receive a telephone call, the service providing apparatus internally calculates a call for which an outbound call will be made and the time when an outbound call will be made.

[160] The 3G-IP transmits an outbound call request signal for attempting the outbound call to the IMX to the IMX at step 1137. The IMX transmits a call setup request signal to the called subscriber at step 1139. The called subscriber transmits a call response signal to the IMX in response to the received video communication call at step 1141. The IMX receives the call response signal from the called subscriber, and transmits it to the 3G-IP at step 1143. The 3G-IP sets up a voice and video channel between it and the called subscriber at step 1145. The 3G-IP transmits ARI to the SCP in order to fetch a video message to be provided to the called subscriber at step 1147. The SCP transmits the video message, which will be provided to the called subscriber, to the 3G-IP through the PA at step 1149. The 3G-IP transmits the video message of the calling subscriber to the called subscriber at step 1151.

[161] After the message has been transmitted, the 3G-IP releases the call with the IMX at step 1153. The IMX releases the call with the called subscriber at step 1155. The 3G-IP reports information (message), indicating that the called subscriber has received, viewed and listened to the message transmitted by the calling subscriber, to the APS at step 1157. The APS transmits a text message, for example, "[The video message] has been transmitted to [a called party's telephone number or name]", to the SMSC at step 1159. The SMSC transmits the corresponding text message (SMS) to the calling subscriber at step 1161. At steps 1159 and 1161, the APS may transmit information providing notification of the fact that the video message has been transmitted to the calling subscriber via an MMS message instead of the SMS message. The APS transmits CDR data to the billing system for billing after the termination of the corresponding service at step 1163.

[162] In this case, although the 3G-IP, the DBS and the APS have been illustrated as being separate in order to provide detailed descriptions of respective functions, they are all elements of the service providing apparatus, and therefore the respective functions of the elements may be performed in a service providing apparatus which is a single apparatus. [163] FIG. 12 is a signal flowchart illustrating a procedure of transmitting a video message via a callback message using the intelligent network method according to a preferred embodiment of the present invention.

[164] This drawing illustrates a procedure in which, using the intelligent network method, the calling terminal accesses the service providing apparatus and stores a video message, and the service providing apparatus receives a video message from a calling subscriber and transmits a callback SMS message to a called subscriber, thereby transmitting the video message. This procedure may be changed according to the internal network or service procedure of a service provider.

[165] Referring to FIG. 12, steps 1201 to 1235 are the same as steps 1101 to 1111 of FIG.

11, therefore detailed descriptions thereof will be omitted here. At step 1237, the APS transmits a callback text message, informing the called subscriber of the reception of the video message, to the SMSC. The SMSC transmits the message (SMS) to the called subscriber at step 1239. At steps 1237 and 1239, the APS may transmit the callback message to the called subscriber via an MMS message instead of a text message (SMS message).

[166] The called subscriber that has received the callback message becomes aware that it is an SMS message indicating the arrival of the video message, and attempts a call to the IMX by pressing the call button at step 1241. The IMX transmits an SRI signal to the HLR in order to query the location of the IMX for the corresponding call at step 1243. The HLR transmits an SRI response signal, including the information about the position of the IMX to which the 3G-IP belongs to, the IMX at step 1245. The IMX transmits an IDP to the SCP that provides a video message transmission service based on the information received from the HLR at step 1247. The SCP becomes aware that a corresponding call relates to the video message transmission service, and transmits FCI and ETC messages requesting call setup to the IMX at step 1249.

[167] The IMX attempts a call to the 3G-IP on the basis of the FCI and ETC messages received from the SCP at step 1251. The 3G-IP makes a call response to the IMX for the received call at step 1253. The IMX makes a call response to the called subscriber at step 1255. The 3G-IP sets up a voice and video channel between it and the called subscriber at step 1257.

[168] The 3G-IP transmits ARI to the SCP in order to fetch a video message to be provided to the called subscriber at step 1259. The SCP transmits the video message, which will be provided to the called subscriber, to the 3G-IP through the PA at step 1261. The 3G-IP transmits the video message of the calling subscriber to the called subscriber through the voice and video channel at step 1263.

[169] After the message has been transmitted, the 3G-IP releases the call with the IMX at step 1265. The IMX releases the call with the called subscriber at step 1267. The 3G-IP reports information (message), indicating that the called subscriber has received, viewed and listened to (checked) the message transmitted by the calling subscriber, to the APS at step 1269. The APS transmits a text message, for example "[The video message] has been transmitted to [a called party's telephone number or name]", to the SMSC at step 1271. The SMSC transmits the corresponding text message (SMS) to the calling subscriber at step 1273. At steps 1271 and 1273, the APS may transmit information, indicating that the video message has been transmitted to the calling subscriber, via an MMS instead of an SMS message. The APS transmits CDR data to the billing system to facilitate billing after the termination of the corresponding service at step 1275.

[170] Although, in this case, the 3G-IP, the DBS and the APS have been illustrated as being separate in order to provide detailed descriptions of respective functions, they are the elements of the service providing apparatus, and therefore the respective functions of the elements may be performed in a service providing apparatus which is a single apparatus.

[171] FIG. 13 is a signal flowchart illustrating a procedure in which a called subscriber checks a received voice message and then makes a response to a calling subscriber according to a preferred embodiment of the present invention.

[172] Referring to FIG. 13, the calling subscriber accesses the service providing apparatus and records a video message, the service providing apparatus transmits the video message to the called subscriber, and the called subscriber views and listens to the video message recorded by the calling subscriber at step 1301. Step 1301 corresponds to the steps up to the step at which the service providing apparatus outputs the video message to the called subscriber in the procedures described with reference to FIGS. 9 to 12.

[173] The 3G-IP outputs a guidance broadcast for a response to the called subscriber at step 1303. An example of this guidance broadcast may include "Please press No. 1 to make a message response, No. 2 to set up an immediate connection with the calling party, and No. 3 to page the calling party." The called subscriber selects a menu item for a message response to make a response, and transmits an answer request signal to the 3G-IP at step 1305.

[174] The 3G-IP reports information (message), indicating that the called subscriber has received, viewed and listened to (checked) the message transmitted by the calling subscriber, to the APS at step 1307. The APS transmits a message, providing notification of the fact that a message, for example, "[The video message] has been transmitted to [a called party's telephone number or name]", has been received, to the SMSC at step 1309. The SMSC transmits the corresponding message (SMS) to the calling subscriber at step 1311. The notification message may be transmitted via an MMS message. The APS transmits CDR data to the billing system to perform billing after the termination of the corresponding service at step 1313.

[175] The 3G-IP transmits a guidance announcement for a response to the called subscriber (for example, "This is a message transmission response. Please start recording after the 'beep' sound, and press * after recording. Beep."), to the called subscriber at step 1315. The called subscriber records a message to be transmitted to the calling subscriber according to the guidance announcement at step 1317. The 3G-IP may transmit a guidance announcement, for example, "We will transmit your answer. Thank you for using this service," to the called subscriber after the recording. The 3G-IP stores message information (a calling party number, a called party number, time information, etc.) and a video message left by the called subscriber, in the APS and the storage device of the DBS at step 1319. The 3G-IP transmits a call release signal to the IMX at step 1321. The IMX transmits the call release signal to the called subscriber at step 1323.

[176] The APS internally fetches data, to be transmitted, from the DBS in order to transmit data, stored by the called subscriber, to the calling subscriber at step 1325. This procedure is performed immediately after the called subscriber leaves the video message. However, since this procedure must be attempted again if the calling subscriber fails to answer a telephone call, the service providing apparatus internally calculates a call for which an outbound call will be made and the time when an outbound call will be made.

[177] The APS requests an outbound call for message transmission from the 3G-IP at step

1327. The 3G-IP transmits an outbound call request signal to the IMX connected via El or Tl at step 1329. The IMX attempts a call setup request to the calling subscriber at step 1331. The subscriber transmits an answer signal to the IMX in response to the received video communication call at step 1333. The IMX transmits an outbound call response signal to the 3G-IP in response to the answer signal received from the calling subscriber at step 1335. The 3G-IP sets up a voice and video channel between it and the calling subscriber at step 1337.

[178] The 3G-IP fetches the video message left by the called subscriber and stored in the

DBS, and outputs the video message to the calling subscriber at step 1339. The 3G-IP plays the entire message and transmits a call release signal to the IMX at step 1341. The IMX transmits the call release signal to the called subscriber at step 1343.

[179] The 3G-IP reports information (message), indicating that the calling subscriber has received, viewed and listened to the video message call response transmitted by the called subscriber, to the APS at step 1345. The APS transmits a text message, for example, "[The video message response] has been transmitted to [a called party's telephone number or name]", to the SMSC at step 1347. The SMSC transmits the cor- responding text message to the called subscriber at step 1349. At this time, the message may be transmitted to the called subscriber via an MMS message instead of the SMS message. The APS transmits CDR data to the billing system for billing after the termination of the corresponding service at step 1351.

[180] FIG. 14 is a signal flowchart illustrating a procedure in which a called subscriber checks a received voice message and then directly accesses a calling subscriber according to a preferred embodiment of the present invention.

[181] Referring to FIG. 14, the calling subscriber accesses the service providing apparatus, and records a video message, the service providing apparatus transmits the video message to the called subscriber, and the called subscriber views and listens to the video message recorded by the calling subscriber at step 1401. Step 1401 corresponds to the procedure up to the step at which the service providing apparatus outputs the video message to the called subscriber in the procedures described with reference to FIGS. 9 to 12.

[182] The 3G-IP outputs a guidance broadcast for a response to the called subscriber at step 1403. An example of the guidance broadcast may include "Please press No. 1 to make a message response, No. 2 to set up an immediate connection with the calling party, and No. 3 to page the calling party." The called subscriber transmits an immediate connection request signal for an immediate connection to the calling subscriber to the 3G-IP at step 1405.

[183] The 3G-IP reports information (message) indicating that the called subscriber has received, viewed and listened to (checked) the message, to the APS at step 1407. The APS transmits a message, providing notification of the fact that a message, for example, "[The video message] has been transmitted to [a called party's telephone number or name]", has been received, to the SMSC at step 1409. The SMSC transmits the message (SMS) to the calling subscriber at step 1411. The notification message may be transmitted via an MMS message. The APS transmits CDR data to the billing system for billing after the termination of the corresponding service at step 1413.

[184] The 3G-IP attempts an outbound call to the IMX connected via El or Tl in order to page the calling subscriber at step 1415. The IMX attempts a call setup request to the calling subscriber at step 1417. The subscriber transmits a call response signal to the IMX in response to the received video communication call at step 1419. The IMX transmits an answer signal to the 3G-IP at step 1421. Channels for video and voice communication are set up between the calling subscriber and the called subscriber at step 1423.

[185] If a video communication path is set up between the calling subscriber and the called subscriber, the calling subscriber and the called subscriber make a video call at step 1425. It the video communication between the calling subscriber and the called subscriber is terminated, the calling subscriber transmits a call release signal to the IMX, and terminates the call that is being made at step 1427. The IMX transmits the call release signal to the 3G-IP at step 1429. The 3G-IP transmits the call release signal to the IMX in order to release the call with the called subscriber at step 1431. The IMX transmits the call release signal to the called subscriber at step 1433. At steps 1427 to 1433, the called subscriber may first transmit the call release signal to the IMX in order to release the call. The 3G-IP transmits a message transmission answer completion notification signal to the APS at step 1435. The APS terminates the corresponding service, and then transmits CDR data to the billing system in order to bill the called subscriber at step 1437.

[186] FIG. 15 is a signal flowchart illustrating a procedure in which the called subscriber checks a received voice message and then pages the calling subscriber according to a preferred embodiment of the present invention.

[187] Referring to FIG. 15, the calling subscriber accesses the service providing apparatus and records a video message, the service providing apparatus transmits the video message to the called subscriber, and the called subscriber views and listens to the video message recorded by the calling subscriber at step 1501. Step 1501 corresponds to the procedure up to the step at which the service providing apparatus outputs the video message to the called subscriber in the procedures described with reference to FIGS. 9 to 12.

[188] The 3G-IP outputs a guidance broadcast for a response to the called subscriber at step 1503. An example of the guidance broadcast may include "Please press No. 1 to make a message response, No. 2 to set up an immediate connection with the calling party, and No. 3 to page the calling party." The called subscriber transmits a paging request signal for paging the calling subscriber to the 3G-IP at step 1505. The 3G-IP transmits a call release signal to the IMX in order to release the call with the called subscriber at step 1507. The IMX transmits the call release signal to the called subscriber at step 1509.

[189] The 3G-IP reports information (message) indicating that the called subscriber has received, viewed and listened to (checked) the message to the APS at step 1511. The APS transmits a message, providing notification of the fact that a message, for example, "[The video message] has been transmitted to [a called party's telephone number or name]", has been received, to the SMSC at step 1513. The SMSC transmits the message (SMS) to the calling subscriber at step 1515. The notification message may be transmitted via an MMS message. The APS terminates the corresponding service, and then transmits CDR data to the billing system for billing at step 1517.

[190] The 3G-IP stores paging information (a calling party number, a called party number, time information, etc.), left by the called subscriber, in the APS and the storage device of the DBS at step 1519. The APS internally fetches a paging notification message, stored by the called subscriber, from the DBS at step 1521. This procedure is performed immediately after the called subscriber has requested paging. However, since this procedure must be attempted again when the calling subscriber fails to receive a telephone call, the service providing apparatus internally calculates the time at which an outbound call will be made, and so on. The APS requests a message call from the 3G-IP.

[191] The APS transmits a paging request signal to the 3G-IP in order to page the calling subscriber at step 1523. The 3G-IP attempts an outbound call to the IMX connected via El or Tl at step 1525. The IMX transmits a call setup request to the calling subscriber at step 1527. The subscriber transmits a call response signal to the IMX in response to the received video communication call at step 1529. The IMX transmits an answer signal to the 3G-IP at step 1531.

[192] The 3G-IP outputs information, indicating that the message paging notification is being performed, to the calling subscriber at step 1533, and attempts an outbound call to the IMX connected via El or Tl to connect to the called subscriber at step 1535. The IMX attempts a call setup request to the called subscriber at step 1537. The called subscriber transmits the call response signal to the IMX in response to a received video communication call at step 1539. The IMX transmits an answer signal to the 3G-IP at step 1541. Channels for video and voice communication are set up between the calling subscriber and the called subscriber at step 1543.

[193] If a video communication path is set up between the calling subscriber and the called subscriber, the calling subscriber and the called subscriber make a video call at step 1545. If video communication between the calling subscriber and the called subscriber is terminated, the calling subscriber transmits a call release signal to the IMX, and terminates the call that is being made at step 1547. The IMX transmits the call release signal to the 3G-IP at step 1549. The 3G-IP transmits the call release signal to the IMX in order to release the call with the called subscriber at step 1551. The IMX transmits the call release signal to the called subscriber at step 1533. At steps 1547 to 1553, the called subscriber may first transmit the call release signal to the IMX in order to release the call. The 3G-IP transmits a message transmission answer completion notification signal to the APS at step 1555. The APS transmits CDR data to the billing system in order to bill the called subscriber after the termination of corresponding service at step 1557.

[194] FIG. 16 is a view illustrating the construction of a system for checking the state of a called subscriber according to a preferred embodiment of the present invention.

[195] Referring to FIG. 16, in order to transmit a voice message, left by a calling terminal

1601, to a called terminal 1603, the called terminal 1603 must be in an idle state. If the state of the called terminal is 'Out of Range', 'Power Off , 'No Answer', or 'Busy,' the service providing apparatus 120 reattempts a call using a retry method set by an operator after checking the state of the called terminal 1603.

[196] Methods of checking the state of the called terminal 1603 include a method in which the service providing apparatus queries the SCP 113 and the HLR 107, associated with the APS of the service providing apparatus 120, about the state, a method of registering a corresponding terminal state request with the HLR or the SCP 113, a method using an ACM message, among the ISUP messages of SS7, and a method using a CPG message, among the messages of SS7.

[197] The method of querying the SCP about the state refers to a method in which, if the

APS requests information about the state of the called terminal 1603 from the SCP at regular intervals, the SCP 113 transmits a specific message BRC to the SSP, checks the state of the called terminal 1603, and transmits the information about the state of the called terminal 1603 to the APS.

[198] The method of registering a corresponding terminal state request with the SCP refers to a method of requesting information about the state of the called terminal 1603 from the HLR 107, 111 or the SCP 113, and, if the called terminal 1603 is not in a standby state, registering the corresponding terminal state request with the SCP to request the SCP to transmit a message to the APS when the called terminal 1603 enters a standby state.

[199] The method using the ACM message of SS7 is a method in which the APS requests video message transmission from the 3G-IP, and the 3G-IP detects the state of the called terminal 1603 by generating a call to the MSCs 105 and 109, connected via El/Tl, and checking the value of the called party state indicator field of the backward call indicator of an ACM message received from a counterpart station. If the called terminal 1603 is in a standby state, the 3G-IP informs the APS that the called terminal 1603 is in the standby state within the service providing apparatus 120, and proceeds with a subsequent call. If the counterpart station is not in the standby state, the 3G-IP does not proceed with the corresponding call, and notifies the APS that a corresponding call has failed. Thereafter, the 3G-IP may reattempt a call using a retry method.

[200] The method using the CPG message of SS7 refers to a method in which the APS requests video message transmission from the 3G-IP and the 3G-IP sets up a call to the MSCs 105 and 109 connected via El/Tl, and determines that the called terminal 1603 is not in a standby state if the 3G-IP receives a CPG message after an ACM message from a counterpart station. That is, if the 3G-IP has received the CPG message from the incoming-side MSCs 105 and 109, the 3G-IP determines that the called subscriber is in a busy state or is in a state in which it is unable to respond, informs the APS of failure, and then terminates a corresponding call. Thereafter, the 3G-IP may reattempt a call using a retry method.

[201] FIG. 17 is a signal flowchart illustrating a procedure of checking the state of the called terminal by querying the SCP about the state thereof according to a preferred embodiment of the present invention. In this case, the SCP may be replaced with the HLR. The APS and HLR can directly communicate with each other using an intelligent network message (MAP), and can request information about the state of the calling subscriber through a gateway or using TCP/IP. This procedure can be changed according to the internal network or service procedure of a service provider.

[202] Referring to FIG. 17, the calling terminal accesses the 3G-IP of the service providing apparatus and stores a voice message to be transmitted to the called terminal in the 3G-IP, and the 3G-IP transmits video message information to be transmitted to the DBS server and the APS server, thereby completing the storage of the video message information at step 1701. Step 1701 corresponds to the procedure in which the calling subscriber accesses the service providing apparatus and stores the video message to be transmitted to the called subscriber, in the procedures described in conjunction with FIGS. 9 to 12. Thereafter, the APS server fetches the video message of the calling subscriber from the DBS through internal scheduling in order to transmit the message to the called subscriber at step 1703.

[203] The APS queries the HLR about the state of the called subscriber at step 1705. The

HLR transmits information about the current state of the corresponding called subscriber to the APS at step 1707. The APS determines whether the called subscriber is in a standby state based on the received information at step 1709. If the called subscriber is in an idle state, the APS transmits an outbound call request signal to the 3G-IP at step 1711. The 3G-IP attempts an outbound call to the IMX connected through El or Tl at step 1713. The IMX transmits a call setup request signal to the called terminal at step 1715. The called terminal transmits a call response signal to the IMX in response to a video communication call at step 1717.

[204] The IMX transmits an answer signal to the 3G-IP at step 1719. The 3G-IP sets up a voice and video channel between it and the called subscriber at step 1721. The 3G-IP fetches the video message which was stored in the DBS and left by the calling subscriber, and outputs the video message to the called subscriber at step 1723. The 3G-IP plays the entire transmitted message and transmits a call release signal to the IMX at step 1725. If the called subscriber desires to make a response without releasing a call after viewing and listening to a message received from the calling party, the 3G-IP may transmit a response video message to the calling subscriber. The IMX transmits the call release signal to the called subscriber at step 1727.

[205] The 3G-IP informs the APS that the called subscriber has received, viewed and listened to the message transmitted by the calling party at step 1729. The APS transmits a text message, indicating that the video message has been transmitted to the called subscriber, to the SMSC at step 1731. The SMSC transmits the text message to the calling subscriber at step 1733. At steps 1731 and 1733, the APS may transmit the message to the calling subscriber via an MMS message. The APS transmits CDR data for billing to the billing system after the termination of the corresponding service at step 1735.

[206] FIG. 18 is a signal flowchart illustrating a procedure of checking the state of the called terminal using the ACM according to a preferred embodiment of the present invention. The method described in this drawing is a method of checking the backward call indicator of the ACM, and corresponds to the case of originating a call regardless of the state of the called subscriber and proceeding with the call if the called subscriber can answer a telephone call. This process can be changed according to the internal network or a service procedure of a service provider.

[207] Referring to FIG. 18, the calling terminal accesses the 3G-IP of the service providing apparatus and stores a voice message to be transmitted to the called terminal in the 3G-IP, and the 3G-IP transmits video message information to the DBS and the APS, thereby completing the storage of the video message at step 1801. In this case, step 1801 corresponds to the procedure in which the calling subscriber accesses the service providing apparatus and stores the video message to be transmitted to the called subscriber in the procedures described in conjunction with FIGS. 9 to 12. T hereafter, the APS server fetches the video message of the calling subscriber from the DBS through internal scheduling in order to transmit the video message to the called subscriber at step 1803.

[208] The APS transmits an outbound request signal to the 3G-IP at step 1805. The 3G-IP transmits an Initial Address Message (IAM) requesting call setup to the IMX at the request of the APS at step 1807. The IMX transmits a Send Routing Information (SRI) signal to the HLR in order to query the location and state of the called subscriber at step 1809. The HLR transmits a Provide Roaming Number (PRN) signal for querying the location of the called subscriber to the incoming-side IMX to which the called subscriber belongs at step 1811. The incoming-side IMX transmits a PRN answer signal, including information about the position of the called subscriber (Mobile Station Roaming Number (MSRN)), to the HLR at step 1813. The HLR transmits an SRI response signal, including information about the position and state of the called subscriber, to the IMX at step 1815.

[209] The IMX transmits an IAM (that is, the call connection request signal) to the incoming-side IMX based on the information about the position of the called subscriber included in the SRI response signal at step 1817. The incoming-side IMX transmits an ACM to the IMX at step 1819. At this time, the incoming-side IMX changes the state of the backward call indicator of the ACM according to the state of the called subscriber and transmits information about the changed state. The IMX transmits a corresponding ACM to the 3G-IP at step 1821. The 3G-IP can check the state of the called subscriber via the backward call indicator of the received ACM. Thereafter, the incoming-side IMX transmits an Answer Message (ANM) (that is, a call connection response signal) to the IMX at step 1823, and the IMX transmits the ANM to the 3G-IP at step 1825.

[210] The 3G-IP sets up a voice and video channel between it and the called subscriber at step 1827. The 3G-IP fetches the video message stored in the DBS and left by the calling subscriber, and outputs the video message to the called subscriber at step 1829. The 3G-IP plays the entire transmitted message and transmits a call release signal to the IMX at step 1831. If the called subscriber desires to make a response without releasing a call after viewing and listening to a message received from the calling party, the 3G-IP may transmit a response video message to the calling subscriber. The IMX transmits the call release signal to the called subscriber at step 1833.

[211] The 3G-IP informs the APS that the called subscriber has received, viewed and listened to (examined) the message transmitted by the calling party at step 1835. The APS transmits a text message, indicating that the video message has been transmitted to the called subscriber, to the SMSC at step 1837. The SMSC transmits the text message to the calling subscriber at step 1839. At steps 1837 and 1839, the APS may transmit the message to the calling subscriber via an MMS message. The APS transmits CDR data for billing to the billing system after the termination of the corresponding service at step 1841.

[212] FIG. 19 is a signal flowchart illustrating a procedure of checking the state of the called terminal using the CPG message according to a preferred embodiment of the present invention. The CPG is a message that is used to provide additional information when information has not been provided by the ACM. Therefore, the CPG method follows a procedure similar to that of the method using the ACM. This procedure may be changed according to the internal network or service procedure of a service provider.

[213] Referring to FIG. 19, the calling terminal accesses the 3G-IP of the service providing apparatus and stores a voice message to be transmitted to the called terminal in the 3G-IP, and the 3G-IP transmits video message information to the DBS and the APS, thereby completing the storage of the video message information at step 1901. Here, step 1901 corresponds to the procedure in which the calling subscriber accesses the service providing apparatus and stores the video message to be transmitted to the called subscriber, in the procedures described in conjunction with FIGS. 9 to 12. Thereafter, the APS server fetches the video message of the calling subscriber from the DBS through internal scheduling in order to transmit the video message to the called subscriber at step 1903.

[214] The APS transmits an outbound request signal to the 3G-IP at step 1905. The 3G-IP transmits an IAM requesting call setup to the IMX at the request of the APS at step 1907. The IMX transmits an SRI signal to the HLR in order to query the location and state of the called subscriber at step 1909.

[215] The HLR transmits a PRN signal for querying the location of the called subscriber to the incoming-side IMX to which the called subscriber belongs at step 1911. The incoming-side IMX transmits a PRN answer signal, including information about the position of the called subscriber, to the HLR at step 1913. The HLR transmits an SRI response signal, including information about the position and state of the called subscriber, to the IMX at step 1915.

[216] The IMX transmits an IAM, that is, a call connection request signal, to the incoming-side IMX based on the information about the position of the called subscriber that is included in the SRI response signal at step 1917. The incoming-side IMX transmits an ACM to the IMX at step 1919. The IMX transmits the ACM to the 3G-IP at step 1921. The incoming-side IMX transmits a CPG, including an event indicator on which state information of the called subscriber is loaded, to the IMX when the state of the called subscriber has not been provided to the ACM at step 1923. The IMX transmits the CPG to the 3G-IP at step 1925. If the called subscriber responds in order to answer a call, the incoming-side IMX transmits an ANM (that is, a call connection response signal) to the IMX at step 1927. The IMX transmits the ANM to the 3G-IP at step 1929.

[217] The 3G-IP sets up a voice and video channel between it and the called subscriber at step 1931. The 3G-IP fetches the video message, which has been stored in the DBS and left by the calling subscriber, and outputs the video message to the called subscriber at step 1933. The 3G-IP plays the entire transmitted message and transmits a call release signal to the IMX at step 1935. If the called subscriber tries to make a response without releasing a call after viewing and listening to a message received from the calling party, the 3G-IP can transmit a response video message to the calling subscriber. The IMX transmits the call release signal to the called subscriber at step 1937.

[218] The 3G-IP informs the APS that the called subscriber has received, viewed and listened to (examined) the message transmitted by the calling party at step 1939. The APS transmits a text message, indicating that the video message has been transmitted to the called subscriber, to the SMSC at step 1941. The SMSC transmits the text message to the calling subscriber at step 1943. At steps 1941 and 1943, the APS may transmit the message to the calling subscriber via an MMS message. The APS transmits CDR data for billing to the billing system after the termination of the corresponding service at step 1945.

[219] FIG. 20 is a signal flowchart illustrating a process in which the calling subscriber accesses the 3G-IP of the service providing apparatus, sets up a voice and video channel, and stores a voice message to be transmitted to the called subscriber according to a preferred embodiment of the present invention.

[220] Referring to FIG. 20, an 0-IMX, a G-IMX and a T-IMX indicate an outgoing-side

IMX, a gateway IMX and an incoming-side IMX, respectively. The gateway IMX refers to an IMX to which 3G-IP equipment is connected, so that it is responsible for direct operation in conjunction with the 3G-IP. The gateway IMX acts as a Signaling Transfer Point (STP) if the outgoing-side IMX is different from the incoming-side IMX.

[221] The 0-IMX receives a 3G-setup signal (that is, a call setup request signal) from the calling subscriber at step 2001. Here, the 3G-setup signal refers to a signal which is transmitted from a W-CDMA terminal to the MSC of the W-CDMA network in order to transmit a video and voice message using a feature code and a called number, a special key or a wireless Internet key.

[222] The 0-IMX receives a call setup request, and transmits an SRI signal to the HLR in order to query the location of the 3G-IP at step 2003. The HLR transmits a PRN signal to the G-IMX in order to query information about the position of the G-IMX at step 2005.

[223] The G-IMX transmits an SRI response signal, including information about the position (MSRN) of the G-IMX operating in conjunction with the 3G-IP, to the HLR at step 2007. The HLR transmits the SRI response signal, including the information about the position (MSRN), to the 0-IMX at step 2009.

[224] The 0-IMX transmits an IAM to the G-IMX in order to request a 3G call setup based on the information about the position (MSRN) at step 2011. The 0-IMX sets an item of Information Transfer Capability (ITC) of the IAM to Restricted Digital Information (RDI), and provides notification of a 3G setup call using a User Service Information (USI) field. The G-IMX transmits an IAM (that is, a call setup request signal) to the 3G-IP at step 2013.

[225] The 3G-IP transmits an ACM to the G-IMX in order to provide notification of the fact that a call process can be performed at step 2015. The G-IMX transmits the ACM to the 0-IMX at step 2017. Thereafter, the 3G-IP transmits an ANM (that is, a call connection response signal) to the G-IMX at step 2019. The G-IMX transmits the ANM to the 0-IMX at step 2021. Steps 2019 and 2021 may be omitted.

[226] Thereafter, steps 2023 to 2059 correspond to a process of forming a voice and video channel. This process is also referred to as a "3G-324M Video/ Audio Negotiation." The 3G-IP determines a master/slave relationship between the calling terminals at step 2023, and exchanges information about capability at step 2025. The 0-IMX transmits a MUX (H.223 multiplexer) table for transmitting voice and video signals to the 3G-IP at step 2027. The 3G-IP transmits a response message for the MUX table to the 0-IMX at step 2029. The 3G-IP transmits the MUX table for transmitting voice and video signals to the 0-IMX at step 2031. The 0-IMX transmits the response message for the MUX table to the 3G-IP at step 2033.

[227] Thereafter, the 3G-IP transmits an Open Logical Channel (OLC) video signal to the

0-IMX in order to request that the OLC for video be opened so as to transmit video at step 2035. The 0-IMX transmits an OLC accept signal to the 3G-IP in order to provide notification of the fact that it has been prepared to receive video through the OLC at step 2037. The 3G-IP sets up a video channel, and transmits an OLC check signal to the 0-IMX in order to provide notification of the fact that the video channel has been connected at step 2039.

[228] Thereafter, the 3G-IP transmits an OLC audio signal to the 0-IMX in order to request that an OLC for audio be opened so as to enable voice transmission at step 2041. The 0-IMX transmits an OLC Ack signal to the 3G-IP as a response message for the audio channel formation request at step 2043. The 0-IMX transmits an OLC audio signal to the 3G-IP in order to request that the OLC for audio be opened so as to transmit voice at step 2045. The 3G-IP transmits an OLC Ack signal to the 0-IMX as a response message for the audio channel formation request at step 2047.

[229] Thereafter, the 3G-IP transmits a video fast update signal to the 0-IMX in order to synchronize video frames at step 2049. The 3G-IP transmits a user indication signal to the 0-IMX in order to transmit a DTMF signal received from a user terminal at step 2051. The 3G-IP transmits a round trip delay signal to the 0-IMX in order to measure the response time from the 0-IMX at step 2053.

[230] The 0-IMX transmits a response message for the round trip delay signal to the

3G-IP at step 2055. The 0-IMX transmits a video fast update signal to the 3G-IP in order to synchronize video frames at step 2057. The 0-IMX transmits a user indication signal for transmitting the DTMF signal to the 3G-IP at step 2059. In this case, the process of exchanging the user indication signal (steps 2051 and 2059) may be performed after the video message has been recorded, and may be omitted. Furthermore, the process of exchanging the round trip delay signal and the answer signal in response thereto (steps 2053 and 2055) may be omitted, if not necessary.

[231] If the voice and video channel is set up by the 3G-324M, the calling subscriber records a video and voice message at step 2061. In this case, the 3G-IP may provide the recording process through the W-CDMA terminal of the calling subscriber in the form of a video or voice guidance announcement.

[232] If the calling subscriber terminates a call after the completion of recording, the O-

IMX transmits an REL signal (that is, a call release signal) to the 3G-IP at step 2063. The 3G-IP closes the session of the 3G-324M before the termination of a call at step 2065. The 3G-IP transmits a recorded message to the APS, and stores the message in the APS at step 2067. The 3G-IP transmits an RLC signal to the 0-IMX, and provides notification of the fact that all call resources have been released at step 2069.

[233] FIG. 21 is a signal flowchart illustrating a process in which the calling subscriber transmits a recorded video message to the called subscriber according to a preferred embodiment of the present invention.

[234] Referring to FIG. 21, the APS requests call transmission from the 3G-IP in order to begin the transmission of a message according to its scheduling at step 2101. The 3G-IP transmits an IAM (that is, a call setup request signal) to the G-IMX according to the call transmission request at step 2103. The G-IMX that has received the IAM transmits an SRI signal to the HLR in order to become aware of the location of the called subscriber at step 2105. The HLR transmits a PRN signal to the incoming-side IMX to which the called subscriber belongs in order to query information about the position (MSRN) of the called subscriber at step 2107. The incoming-side IMX transmits a PRN answer signal, including the information about the position (MSRN) of the incoming-side IMX, to the HLR in response thereto at step 2109.

[235] The HLR transmits an SRI response signal, including the information about the position (MSRN), to the G-IMX at step 2111. The G-IMX transmits an IAM (that is, a call setup request signal) to the incoming-side IMX based on the information about the position (MSRN) at step 2113. If the called subscriber can answer a telephone call, the incoming-side IMX transmits an ACM to the G-IMX at step 2115. The G-IMX transmits the ACM to the 3G-IP at step 2117. If the called subscriber answers an incoming call, the incoming-side IMX transmits an ANM to the G-IMX at step 2119. The G-IMX transmits the ANM to the 3G-IP at step 2121.

[236] The 3G-IP sets up a 3G-324M voice and video channel between it and the incoming-side IMX at step 2123. Step 2123 corresponds to the process of steps 2023 to 2059 described with reference to FIG. 20. If the voice and video channel is set up between the 3G-IP and the called terminal, the 3G-IP transmits the message of the calling subscriber to the called subscriber at step 2125. After the message has been transmitted to the called subscriber, the 3G-IP terminates the call with the called terminal, closes the voice and video channel, and releases call resources at steps 2127 to 2135.

[237] FIG. 22 is a signal flowchart illustrating a procedure of transmitting a video and voice message between terminals supporting 3G over a 3G network according to a preferred embodiment of the present invention.

[238] Referring to FIG. 22, both a subscriberl and a subscribed refer to terminals supporting 3G, and the 3G-IP supports the 3G-324M. In this case, the basic call processing procedure is similar to that in a 2G network, but uses a 3G-324M protocol for opening a video channel.

[239] If the subscriberl transmits a call in order to leave a message, the subscriberl transmits a setup signal to an outgoing-side IMX and requests a call connection at step 2201. The setup signal includes a Bearer Capability Information Element (BC IE) and a Low Layer Compatibility Information Element (LLC IE), and an outgoing-side IMX can become aware that a call received through the BCIE and LLC IE is a 3G-call setup signal. The outgoing-side IMX attempts a call connection to the 3G-IP using the Information Transfer Capability (ITC) and User Service Information (USI) parameters of the IAM, that is, an ISUP message, at step 2203. Since the ITC and the USI are transmitted to the 3G-IP with information about 3G transmission included therein, the 3G-IP can determine that the transmitted call is a 3G call.

[240] The 3G-IP transmits an ACM and ANM to the outgoing-side IMX in response thereto at step 2205. The outgoing-side IMX transmits an Alert/Connect signal to the subscriberl, thus setting up a communication path between the 3G-IP and the subscriberl at step 2207. Thereafter, the 3G-IP sets up a bearer channel for transmitting video and voice data between it and the subscriberl using 3G-324M at step 2209. After the communication path for video and voice has been set up, the 3G-IP records a video and voice message received from the subscriberl at step 2211. The subscriberl and the subscribed do not require an additional codec conversion process for the message, since they support 3G. When the recording is completed, the subscriberl and the 3G-IP terminate the call and release channel resources at steps 2213 and 2215.

[241] Thereafter, the 3G-IP begins a process of transmitting a message to the subscribed according to internal scheduling at step 2217. The 3G-IP transmits an IAM signal, including ITC and USI, which are received from the outgoing-side IMX for access to the subscribed, to the incoming-side IMX at step 2219. The incoming-side IMX transmits a setup signal requesting call setup to the subscribed based on the IAM information at step 2221. If the subscribed responds, the incoming-side IMX receives an Alert/Connect signal from the subscribed at step 2223, and transmits ACM and ANM to the 3G-IP at step 2225.

[242] Thereafter, the 3G-IP sets up a bearer channel for transmitting video and voice data between it and the subscribed using the 3G-324M at step 2227. The 3G-IP transmits a video and voice message, which have been left by the subscriberl, to the subscribed using the bearer channel at step 2229. After the transmission of the messages is completed, the subscriber2 and the 3G-IP terminate the call and release channel resources at steps 2231 and 2233.

[243] FIG. 23 is a signal flowchart illustrating a procedure of transmitting a video message from a terminal that supports 3G to an existing terminal that does not support 3G according to a preferred embodiment of the present invention. In general, in the case where a call is transmitted from a W-CDMA terminal to a 2G terminal, such as an existing CDMA terminal, 2G transmission is performed. However, in the case where 3G-IP is used, as in the present invention, the W-CDMA terminal can provide service in cases including the case where it moves to an existing heterogeneous network, and can transmit a call regardless of the called terminal. In this case, although a video message is recorded, only a voice message is transmitted to the called subscriber.

[244] Referring to FIG. 23, "subscriberl" refers to a terminal that supports 3G, and

"subscribed" refers to a 2G terminal that does not support 3G. Since steps 2301 to 2311 are the same as steps 2201 to 2211, which have been described with reference to FIG. 22, descriptions thereof are omitted here.

[245] A message received from the subscriberl at step 2311 includes video

(H.263/MPEG) and video (AMR codec). The subscribed that will receive the message is a terminal that does not support 3G, and requires that the message be converted into a message supported by 2G. Therefore, the 3G-IP extracts a voice (AMR codec) portion from a recorded message, converts the extracted voice portion into a voice codec available in 2G, such as PCM or ADPCM, and stores it at step 2313. When the recording is completed, the subscriberl and the 3G-IP terminate the call, and release channel resources at steps 2315 and 2317. Step 2313 may be performed after steps 2315 and 2317.

[246] After the call with the subscriberl is terminated, the 3G-IP begins a process of transmitting the message to the subscribed at step 2319. In this case, the 3G-IP has the terminal type of the called subscriber in a database, and directly transmits a 2G call if the called subscriber is a 2G calling subscriber. However, in the case where the calling subscriber, which will receive the message, must transmit the 2G call in an area outside a 3G service area, the call is immediately terminated for a reason such as call rejection, function rejection or a temporary failure, in response to a transmitted IAM message, and a 2G call can be made according to the cause of termination.

[247] The 3G-IP transmits an IAM to an incoming-side MSC to transmit a 2G call at step

2321. The incoming-side MSC transmits a setup signal for call setup to the subscribed at step 2323. If the subscribed responds, the incoming-side MSC receives an Alert/ Connect signal from the subscribed at step 2325, and transmits ACM and ANM to the 3G-IP accordingly at step 2327, so that a communication path is set up between the 3G-IP and the subscribed. [248] The 3G-IP does not set up an additional bearer channel between it and the subscriber2, and transmits only a voice message to the subscriber! at step 2329. When the transmission of the message is completed, the subscribed and the 3G-IP terminate the call and release resources at steps 2331 and 2333.

[249] FIG. 24 is a signal flowchart illustrating a procedure of transmitting a voice message from a calling terminal that does not support 3G to a calling terminal that supports 3G according to a preferred embodiment of the present invention. In this case, since a transmitted message includes only voice, video data which is designated by the calling subscriber or previously specified can be transmitted together with the voice to the called subscriber.

[250] Referring to FIG. 24, a subscriberl refers to a 2G terminal that does not support the

3G, and a subscribed refers to a terminal that supports the 3G. In the case where the subscriberl transmits a call in order to leave a message, the subscriberl transmits a setup signal to the outgoing-side MSC for call transmission at step 2401. In this case, the subscriberl makes the BC IE of the setup signal empty, thereby providing notification of the fact that the setup signal is a call transmitted for 2G. The outgoing-side MSC attempts a call connection by transmitting the IAM of an ISUP message to the 3G-IP at step 2403. The 3G-IP transmits ACM and ANM to the outgoing-side MSC in response to the IAM at step 2405. The outgoing-side MSC transmits an Alert/Connect signal to the subscriberl at step 2407.

[251] The subscriberl records a voice message via a communication path, established between it and the 3G-IP, based on the ACM/ANM and the Alert/Connect signal at step 2409. The 3G-IP converts the recorded voice message, along with a video specified by a calling party or a video signal previously set in a system, into a format, such as an AMR format, which is available in W-CDMA, converts a video signal and a voice signal into a single file, such as 3GP (H.263/MPEG + AMR) file, and stores the single file at step 2411.

[252] If the recording is completed, the subscriberl and the 3G-IP terminate the call, and release channel resources at steps 2413 and 2415. Step 2411 can be performed after steps 2413 and 2415.

[253] Since subsequent processes, that is, steps 2417 to 2433, are the same as steps 2217 to 2233, which have been described with reference to FIG. 22, descriptions thereof are omitted here.

[254] An IVR scenario for a video message transmission service is described with reference to FIGS. 25 to 27 below.

[255] FIG. 25 is a flowchart illustrating a scenario of a process in which the calling terminal records and transmits a video message, which will be transmitted to a called terminal, according to a preferred embodiment of the present invention. [256] Referring to FIG. 25, the calling subscriber receives information about a feature code for video message transmission according to the present invention, a called terminal number and a call button from a user, and accesses the service providing apparatus at step 2501. The service providing apparatus outputs a guidance announcement, for example, "[Service provider name.] This is a video message transmission service," to the calling subscriber at step 2503. The user of the calling terminal records a video message to be transmitted to the called terminal according to the guidance announcement at step 2505. The service providing apparatus determines whether there has been an interruption or whether a recording time has elapsed based on the input of * or # at step 2507. If, as a result of the determination, it is determined that there has been an interruption, step 2521 is performed; and if, as a result of the determination, it is determined that the recording time has elapsed, step 2509 is performed. At step 2521, the service providing apparatus outputs a message stating "We will transmit your message. Thank you for using this service," to the calling terminal.

[257] At step 2509, the service providing apparatus outputs a message, stating "Please press * or # for transmission," to the calling terminal. Thereafter, if * or # is pressed at step 2511, step 2519 is performed. If a predetermined key input time has elapsed at step 2513, step 2515 is performed.

[258] At step 2515, the service providing apparatus determines whether the number of predetermined allowable input attempts has been exceeded. If, as a result of the determination, it is determined that the number of predetermined allowable input attempts has been exceeded, step 2517 is performed; and if, as a result of the determination, it is determined that the number of predetermined allowable input attempts has not been exceeded, the process returns to step 2509.

[259] At step 2517, the service providing apparatus outputs a message, stating

"Transmission has been cancelled," to the calling terminal. The call is then released at step 2519.

[260] FIG. 26 is a flowchart illustrating a scenario of a process of viewing and listening to a voice message through the called terminal according to a preferred embodiment of the present invention.

[261] Referring to FIG. 26, the called terminal receives a telephone call in order to receive a video message from the service providing apparatus at step 2601. The service providing apparatus determines whether a nickname for the calling subscriber exists at step 2603. If, as a result of the determination, it is determined that no nickname exists, step 2605 is performed; and if, as a result of the determination, it is determined that a nickname exists, step 2607 is performed.

[262] If no nickname exists, the service providing apparatus outputs a message stating "[Service provider name.] This is a video message transmission service" to a called terminal at step 2605. If a nickname exists, the service providing apparatus outputs a message, stating "This is a video message from [Hong Gil-Dong]", to the called terminal at step 2607. In this case, [Hong Gil-Dong] is a nickname, which is set by the calling terminal and is converted into voice in the TTS server of the service providing apparatus.

[263] Thereafter, the service providing apparatus outputs the video message, which is recorded by the calling terminal, to the called terminal at step 2609. The service providing apparatus plays the entire video message and then outputs a message, stating "Please press No. 1 to view and listen again, No. 2 to make a video message response, No. 3 to make an immediate connection to the calling party, and No. 4 to page the calling party" to the called terminal at step 2611. At this time, if the called subscriber presses No. 1, the service providing apparatus outputs the voice message to the called terminal again, transmits a text message, stating "[a video message] has been transmitted to 016-345-6789," to the calling terminal at step 2612, and then releases the call at step 2615. At this time, the service providing apparatus can release the call first, and then transmit the text message to the calling terminal.

[264] After step 2611, if the called subscriber presses No. 2, 3 or 4, the service providing apparatus performs the response procedure corresponding to the pressed number at step 2617. The response procedure of step 2617 is described in detail with reference to FIG. 27 below.

[265] FIG. 27 is a flowchart illustrating a scenario of a procedure of viewing and listening to a video message and making a response through a called terminal according to a preferred embodiment of the present invention.

[266] Referring to FIG. 27, the called subscriber views and listens to a received voice message, and makes a response to a video message by inputting a corresponding number according to a guidance announcement, provided by the service providing apparatus, in order to make a response to the calling terminal at step 2701. The service providing apparatus checks the number input by the called subscriber at step 2703. At this time, if the called subscriber presses No. 2 in order to transmit a response message, step 2705 is performed. If the called subscriber presses No. 3 to make an immediate connection to the calling party, step 2715 is performed. If the called subscriber presses No. 4 to page the calling party, step 2713 is performed.

[267] If No. 2 is pressed at step 2703, the service providing apparatus outputs a guidance announcement, stating "We will record a video message and transmit it to the person who left the message. Please start recording after the 'beep' sound and press * or # after recording. Beep," to the called terminal at step 2705. The called subscriber records a video message, which will be transmitted to the calling subscriber as a response message, at step 2707. Thereafter, the service providing apparatus transmits a response message to the calling terminal according to the video message transmission scenario at step 2709, and then releases the call at step 2711.

[268] If No. 3 is pressed at step 2703, the service providing apparatus outputs a message, stating "Connecting to the calling party. Please hold on," to the called terminal at step 2713. Thereafter, the service providing apparatus dials the calling terminal to make a call between the called terminal and the calling terminal at step 2715. Thereafter, when the communication between the called terminal and the calling terminal is terminated, the service providing apparatus releases the call at step 2711.

[269] If No. 4 is pressed at step 2703, the service providing apparatus outputs a message stating "When the person who transmitted a message is paged, we will connect you to him or her. Thank you for using this service" to the called subscriber at step 2717, and releases the call at step 2718. Thereafter, the service providing apparatus attempts a call to the original calling terminal and accesses the original calling terminal at step 2719. Thereafter, the service providing apparatus transmits a message stating "The person who received the video message transmitted by you made a request for paging you. We are connecting to him. Please hold on" to the calling terminal at step 2721. Thereafter, the service providing apparatus attempts a call to the called terminal that paged the original calling party and accesses the called terminal at step 2723, and then the calling terminal and the called terminal make a call at step 2725.

[270] FIG. 28 is a view of an example of the screen of a calling terminal illustrating a group video message transmission service according to a preferred embodiment of the present invention. This drawing shows a screen for a group video message transmission service over the wireless Internet. This drawing shows the screen for a group video message transmission service, and illustrates the group video message transmission service in which a calling customer leaves one message using "a subscriber's own number + a wireless Internet access key" and the message is transmitted to several called parties registered in a group directory.

[271] Referring to FIG. 28, if the calling subscriber inputs the subscriber's own number and presses a wireless Internet access key, the calling terminal is connected to the service providing apparatus through the wireless Internet at step 2801. The service providing apparatus provides the calling terminal with a video message transmission service screen 2803. The calling terminal displays the video message transmission service screen 2803 on the display unit thereof. If a video message service item is selected and pressed on the video message transmission service screen 2803, a video message menu screen 2805 is displayed on the display unit of the calling terminal. If a group transmission item is selected on the video message menu screen 2805, a group list screen 2807, which is pre-selected by a calling subscriber, is displayed on the display unit of the calling terminal. At this time, if a specific group such as a friends group is selected, the connection to the wireless Internet is released, and a wireless Internet completion screen 2809 is displayed on the display unit of the calling terminal. Thereafter, the calling terminal is connected for a call to the 3G-IP of the service providing apparatus through a mobile communication network in order to record a voice message for group video message transmission at step 2811. Thereafter, the 3G-IP receives a video message from the calling subscriber, and transmitted the video message to called subscribers corresponding to the friends group.

[272] For the video message transmission service according to the present invention, it is necessary to provide a customer using the video message transmission service with an interface that processes a video message usage history (usage details), the management of received video messages, a user nickname, the directory management of group video messages, the management of the password of a message box and the like. Access methods using the video message management function of the present invention may be classified into three types. The first one is a method of inputting a subscriber's own number and then using the wireless Internet key of the mobile phone. In this case, the subscriber's own number is the subscriber's own mobile communication subscription number for the present service management. The second one is a method in which a subscriber presses a feature code and a subscriber's own number and then presses a call button (a video call button), like the existing voice or video communication method (also including a method in which only a feature code is pressed and an IMX mobile communication network recognizes that the feature code corresponds to a management function and performs routing to the service providing apparatus). The third one is a method of accessing a wired Internet through the WEB. The first method is described with reference to FIGS. 29 to 32 below, the second method is described with reference to FIGS. 33 to 38 below, and the third method is described with reference to FIGS. 39 to 42 below.

[273] The video message management function using the wireless Internet according to a preferred embodiment of the present invention is described with reference to FIGS. 29 to 32 below.

[274] FIG. 29 is a view showing an example of the screen of a mobile terminal for querying a video message history according to a preferred embodiment of the present invention.

[275] Referring to FIG. 29, if the subscriber of the mobile terminal inputs a subscriber's own number and presses a wireless Internet access key, the mobile terminal is connected to the service providing apparatus over the wireless Internet at step 2901. The service providing apparatus provides the mobile terminal with a video message transmission service screen 2903. The mobile terminal displays the video message transmission service screen 2903 on the display unit thereof. If a video message service item is selected and pressed on the video message transmission service screen 2903, a video message menu screen 2905 is displayed on the display unit of the mobile terminal. If a group video message history query item is selected and pressed on the video message menu screen 2905, a video message history query screen 2907 is displayed on the display unit of the mobile terminal. In this case, the video message history query screen 2907 includes a transmitted video message list. If a specific video message item is selected and pressed, a corresponding video message history screen 2909 is displayed on the display unit. It is also possible to view the transmitted video message (not shown).

[276] FIG. 30 illustrates the screen of a called terminal for managing received video messages according to a preferred embodiment of the present invention.

[277] Referring to FIG. 30, if the subscriber of the mobile terminal inputs a subscriber's own number and presses a wireless Internet access key, a mobile terminal is connected to the service providing apparatus over the wireless Internet at step 3001. The service providing apparatus provides the mobile terminal with a video message transmission service screen 3003. The mobile terminal displays the video message service screen 3003 on the display unit thereof. If a video message service item is selected and pressed on the video message service screen 3003, a video message menu screen 3005 is displayed on the display unit of the mobile terminal. If a video message service item is selected and pressed in the video message menu screen 3005, a password checking screen 3007 is displayed on the display unit of the mobile terminal. If the correct password is input on the password checking screen 3007, a received video message list screen 3009 is displayed on the display unit. If a specific video message is selected on the received video message list screen 3009, a corresponding video message detail screen 3011 is displayed on the display unit. At this time, the video message detail screen 3011 includes a view and listen item and a delete item. A user can view and listen to or delete a selected message using one of the items.

[278] FIG. 31 is a view showing an example of the screen of a mobile terminal for managing a group directory according to a preferred embodiment of the present invention.

[279] Referring to FIG. 31, when the subscriber of the mobile terminal inputs the subscriber's own number and presses a wireless Internet access key, a mobile terminal is connected to the service providing apparatus over the wireless Internet at step 3101. The service providing apparatus provides the mobile terminal with a video message service screen 3103. The mobile terminal displays the video message service screen 3103 on the display unit thereof. If a video message service item is selected and pressed on the video message service screen 3103, a video message menu screen 3105 is displayed on the display unit of the mobile terminal. If a directory item is selected and pressed on the video message menu screen 3105, a group directory management screen 3107 is displayed on the display unit of the mobile terminal. In this case, the group directory management screen 3107 includes a predetermined group directory list and a group addition item. If the group addition item is selected on the group directory management screen 3107, a group addition screen 3109 is displayed on the display unit. A user can add a new group to the screen 3109.

[280] If a specific group (a friends group) is selected on the group directory management screen 3107, an information screen 3111 for a corresponding specific group is displayed on the display unit. The group information screen 3111 includes a list of names of members belonging to a group, a group modification item, a group deletion item, an address addition item and the like. If the address addition item is selected on the group information screen 3111, a screen 3113 for adding a new member to a corresponding group is displayed on the display unit. A user can add a new member through the screen 3113. If the name of a specific member (Hong Gil-Dong) is selected on the group information screen 3111, an information screen 3115 corresponding to that member is displayed on the display unit.

[281] FIG. 32 is a view showing an example of the screen of a mobile terminal for setting a video message service environment according to a preferred embodiment of the present invention.

[282] Referring to FIG. 32, when the subscriber of the mobile terminal inputs the subscriber's own number and presses a wireless Internet access key, a mobile terminal is connected to the service providing apparatus over the wireless Internet at step 3201. The service providing apparatus provides the mobile terminal with a video message service screen 3203. The mobile terminal displays the video message service screen 3203 on the display unit thereof. If a video message service item is selected and pressed on the video message service screen 3203, a video message menu screen 3205 is displayed on the display unit of the mobile terminal. If an environment setting item is selected and pressed on the video message menu screen 3205, a screen 3207 for environment setting is displayed on the display unit of the mobile terminal. In this case, the environment setting screen 3207 includes a nickname setting item, a password change item and a response video message fee setting item.

[283] If the nickname setting item is selected on the environment setting screen 3207, a nickname setting screen 3209 is displayed on the display unit. The nickname setting screen 3209 includes a nickname modification item. If the nickname modification item is selected, a screen 3211 for changing a nickname is displayed on the display unit. A user can change his or her nickname using the screen 3211.

[284] If the password change item is selected on the environment setting screen 3207, a user can change his or her password using an existing password input screen 3213, a new password input screen 3215 and a password examination screen 3217. Changing the password in this way is optional.

[285] If the response video message fee setting item is selected on the environment setting screen 3207, a response video message fee setting screen 3219 is displayed on the display unit. A user can set whether fees are to be charged to a called party or to himself or herself for a response video message using the video message fee setting screen 3219.

[286] The video message management function using the wired Internet according to a preferred embodiment of the present invention is described with reference to FIGS. 33 to 38 below.

[287] FIG. 33 is a view showing an example of an Internet screen for querying a video message history. FIG. 34 is a view showing an example of an Internet screen for managing received voice messages. FIG. 35 is a view showing an example of an Internet screen for managing a video message group directory. FIG. 36 is a view showing an example of an Internet screen for setting a nickname. FIG. 37 is a view showing an example of an Internet screen for changing a password. FIG. 38 is a view showing an example of an Internet screen for setting response video message charges.

[288] Referring to FIGS. 33 to 38, when the subscriber of the mobile terminal accesses the wired Internet to manage video messages, a main screen includes menus for a video message history query, received video messages, a directory, and environment setting. If the subscriber of the mobile terminal clicks on the menus, a video message history query screen 3301, a received voice message screen 3401, a directory screen 3501 and environment setting screens 3601, 3701 and 3801 are output according to the selected menus.

[289] The video message history query screen 3301 includes a telephone number item, a transmission date item, a reception date item, a reception state item, a response item and a view and listen item. The received video message screen 3401 includes a transmission number item, a transmission date item, a reception date item, a reception state item, a response item and a view and listen item. The directory screen 3501 includes a list of previously registered groups and a group addition item. In this case, the list of the groups includes a group name item, a group member number item, a group description item, a modification item and a deletion item. The nickname setting screen 3601 for environment setting provides an input window for receiving a nickname. A password change screen 3701 for environment setting includes an existing password input window, a new password input window, and a new password checking window. The response video message fee setting screen 3801 for environment setting displays information about which person is currently paying response video message fees, and also includes an interface for setting himself or herself as the person who will be charged for a response video message.

[290] The video message management function using a communication method according to a preferred embodiment of the present invention is described with reference to FIGS. 39 to 42 below.

[291] FIG. 39 is a flowchart illustrating an IVR scenario for managing video messages according to a preferred embodiment of the present invention.

[292] Referring to FIG. 39, the user of the mobile terminal dials the service providing apparatus over the mobile communication network to access the service providing apparatus in a video message management state at step 3901. The service providing apparatus outputs a message, stating "[Service provider name.] This is a video message transmission service," to the user at step 3903, and enters the main state of the video message service at step 3905. In the main state of the video message transmission service, the service providing apparatus outputs a message, stating "Please press No. 1 to make a video message history query, No. 2 to manage received video messages, and No. 3 to set the environment," to the user at step 3907.

[293] In this case, if the user presses No. 1, the service providing apparatus enters the video message history query state at step 3909. If the user presses No. 2, the service providing apparatus enters the video message management state at step 3911. If the user presses No. 3, the service providing apparatus enters the video message environment setting state at step 3913.

[294] FIG. 40 is a flowchart illustrating an IVR scenario for a video message history query according to a preferred embodiment of the present invention.

[295] Referring to FIG. 40, if the user presses No. 1 after step 3907 of FIG. 39, the current IVR state is a video message history query state at step 4001. If, in the video message history query state, there exist only transmitted messages, the service providing apparatus outputs a message stating "There are N messages that have been transmitted" to the user at step 4003. If, in the video message history query state, there are transmitted messages and messages waiting to be transmitted, the service providing apparatus outputs a message stating "There are N messages transmitted and M messages waiting to be transmitted" to the user at step 4005. Meanwhile, if, in the video message history query state, there are only messages waiting to be transmitted, the service providing apparatus outputs a message stating "There are M messages waiting to be transmitted" to the user at step 4007.

[296] After steps 4003, 4005 and 4007, the service providing apparatus outputs a message stating "Please press No. 1 to hear a transmitted message history, and press No. 2 to hear a waiting message list" to the user at step 4009. At this time, if the user presses No. 1, the service providing apparatus repeatedly outputs a message, stating "The message was transmitted to xxx-xxx-xxxx, xx year, xx month, at xx (hours) xx (minutes) (a.m./p.m.)," to the user as many times as the number of messages that have been transmitted at step 4011. Meanwhile, if the user presses No. 2, the service providing apparatus outputs a message, stating "The message will be transmitted to xxx-xxx-xxxx, xx year, xx month, at xx(hours) xx (minutes) (a.m./p.m.)," to the user as many times as the number of messages waiting to be transmitted at step 4013.

[297] After steps 4011 and 4013, the service providing apparatus outputs a message, stating "There are no more messages," to the user at step 4015 and causes the IVR state to enter the video message main state at step 4017.

[298] FIG. 41 is a flowchart illustrating an IVR scenario for managing received video messages according to a preferred embodiment of the present invention.

[299] Referring to FIG. 41, if the user presses No. 2 after step 3907 of FIG. 39, the current IVR state is the video message management state at step 4101. The service providing apparatus determines whether there are received video messages at step 4103. If, as a result of the determination, it is determined that received video messages exist, step 4107 is performed; and if, as a result of the determination, it is determined that no received video messages exist, step 4105 is performed.

[300] At step 4105, the service providing apparatus outputs a message, stating "There are no received video messages in the message box" to the user, and then enters the video message main state. At step 4107, the service providing apparatus outputs a message stating "There are N video messages" to the user. Thereafter, the service providing apparatus outputs a message, stating "If you want to view and listen to a message, please enter your four-digit password. If this is your first access, the last four digits of your telephone number are the password" to the user at step 4109. If the user enters the correct password, the service providing apparatus outputs a message, stating "Please press No. 1 to view and listen to the next message, No. 2 to view and listen to the previous message, and No. 0 to delete the message" to the user at step 4111.

[301] Thereafter, the service providing apparatus determines whether there are any messages to be played at step 4113. If, as a result of the determination, it is determined that there are messages to be played, step 4115 is performed; and if it is determined that there are no messages to be played, step 4129 is performed.

[302] At step 4129, the service providing apparatus outputs a message stating "There are no more messages" to the user, and determines whether any messages exist at step 4131. At this time, if any messages exist, the service providing apparatus returns to step 4111. If there are no messages left, the service providing apparatus enters the video message main state at step 4133.

[303] At step 4115, the service providing apparatus converts information about the message to be played into voice while operating in conjunction with the TTS server. The service providing apparatus then outputs a message stating "There is a message received from xxx-xxx-xxxx, xx year, xx month, at xx (hours) and xx (minutes) (a.m./p.m.)" to the user at step 4117. The service providing apparatus then outputs the corresponding message to the user and plays the message at step 4119. Thereafter, if the user presses No. 1, the service providing apparatus returns to step 4113 to view and listen to the next message at step 4121. If No. 2 is pressed, the service providing apparatus returns to step 4113 to view and listen to the previous message at step 4123.

[304] Meanwhile, if the user presses No. 3 in order to delete a message that has been heard, the service providing apparatus deletes the message at step 4125, outputs a message stating "The message was deleted" to the user at step 4127, and then returns to step 4113.

[305] FIG. 42 is a flowchart illustrating an IVR scenario for setting a video message environment according to a preferred embodiment of the present invention.

[306] Referring to FIG. 42, if the user presses No. 3 after step 3907 of FIG. 39, the current IVR state is the video message environment setting state at step 4201. The service providing apparatus outputs a message stating "This is environment setting. If you want to continue, enter your four-digit password" to the user at step 4203. The service providing apparatus checks a password input by the user at step 4205. At this time, if the password is correct, step 4207 is performed, and if the password is incorrect, step 4203 is performed.

[307] At step 4207, the service providing apparatus outputs a message, stating "This is environment setting. Please press No. 1 to change your nickname, No. 2 to perform group management, No. 3 to change your password, No. 4 to perform directory management, No. 5 to perform message call billing management and No. 0 to return to the previous menu item" to the user. In this case, if the user presses No. 1, step 4209 is performed. If the user presses No. 2, step 4211 is performed. If the user presses No. 3, step 4213 is performed. If the user presses No. 4, step 4221 is performed. If the user presses No. 5, step 4223 is performed. If the user presses No. 0, step 4235 is performed.

[308] At step 4209, the service providing apparatus outputs a message stating "Please use the WEB or Magic-n to change your nickname" to the user, and then returns to step 4207.

[309] At step 4211, the service providing apparatus outputs a message stating "Please use the WEB or Magic-n to perform group management" to the user, and then returns to step 4207.

[310] At step 4213, the service providing apparatus outputs a message stating "Please enter a new four-digit password" to the user. After the four-digit password is received from the user, the service providing apparatus outputs a message stating "Please enter the four-digit password again" to the user at step 4215. At this time, the service providing apparatus receives the four-digit password from the user again, and determines whether the password is correct at step 4217. If, as a result of the determination, it is determined that the password is correct, step 4219 is performed; and if, as a result of the determination, it is determined that the password is incorrect, the service providing apparatus returns to step 4213. At step 4219, the service providing apparatus stores the new password in the DB, and then returns to step 4207.

[311] At step 4221, the service providing apparatus outputs a message stating "Please use the WEB or Magic-n to perform directory management" to the user, and then returns to step 4207.

[312] At step 4223, the service providing apparatus outputs a message stating "This is message call billing management" to the user, and then determines whether responding party charging has been set at step 4225. Here, if the responding party charging has been set, it means that the person who replies pays the charges for the response. If, as a result of the determination, it is determined that responding party charging has not been set, step 4227 is performed. If, as a result of the determination, it is determined that the responding party charging has been set, step 4231 is performed. At step 4227, the service providing apparatus outputs a message stating "Currently, the person who receives a response must pay the fees for the message call response. If you want the person who makes the response to pay the fees, please press No. 0" to the user. If the user presses No. 0, the service providing apparatus sets responding party charging at step 4239 and then returns to step 4207. At step 4231, the service providing apparatus outputs a message stating "Currently, the person who replies must pay fees for the message call response. If you want the person who receives the response to pay the fees, please press No. 0" to the user. At this time, if the user presses No. 0, the service providing apparatus releases the responding party charging at step 4233, and then returns to step 4207.

[313] At step 4235, the current IVR state enters the video message main state.

[314] FIG. 43 is a view illustrating a procedure in which a calling subscriber uses the present service by inputting a DTMF when the called subscriber does not answer a telephone call or is switched to a VMS while attempting video communication according to a preferred embodiment of the present invention.

[315] Referring to FIG. 43, when the called subscriber does not make a reply, or a call is switched to the VMS in the case where the calling subscriber transmits a telephone call to the called subscriber in order to perform a video call, the calling subscriber transmits a request for use of the present service using a DTMF signal at step 4301. The service providing apparatus determines whether the DTMF signal is intended for the video message transmission service at step 4303. If, as a result of the determination, it is determined that the DTMF signal is intended for the video message transmission service, the service providing apparatus outputs a guidance announcement stating "Please start recording after the 'beep' sound and press # after recording" to the calling subscriber at step 4305. The calling subscriber transmits the video message to a service providing apparatus according to the guidance announcement at step 4307. The service providing apparatus stores the received video message therein at step 4309, and then releases the call with the calling subscriber at step 4311.

[316] Thereafter, the service providing apparatus transmits a call for connection to the called subscriber in order to transmit the recorded message to the called subscriber at step 4313. If the called subscriber responds to the transmitted call of the service providing apparatus, the service providing apparatus outputs a message providing notification of the reception of the video message, (for example, "This is a video message from [Hong Gil-Dong]") to the called subscriber at step 4315. The called subscriber checks the received video message at step 4317. When the transmission of the message is completed, the service providing apparatus outputs a guidance announcement for response or viewing and listening again to the called subscriber at step 4319. Thereafter, the service providing apparatus provides a response service, etc. depending on the selection of the called subscriber at step 4321, and releases the call at step 4323.

[317] FIG. 44 is a signal flowchart illustrating a procedure in which a calling subscriber enters the present service by inputting a DTMF when the called subscriber does not answer a telephone call or is switched to a VMS while attempting video communication according to a preferred embodiment of the present invention.

[318] Referring to FIG. 44, the G-IMX refers to an IMX in which the 3G-IP is connected to a gateway IMX. The calling subscriber first transmits a call setup request signal to an outgoing-side IMX in order to transmit a call by inputting a called number according to a general dialing method at step 4401. The outgoing-side IMX transmits an SRI signal to the HLR in order to query the location of the G-MSC based on the received called number at step 4403.

[319] The HLR transmits a PRN signal to the G-IMX in order to query information about the position of the G-IMX at step 4405. The G-IMX transmits a PRN answer signal, including its own information about the position (MSRN), to the HLR at step 4407. The HLR transmits an SRI response signal, including the information about the position (MSRN) of the G-IMX, to the outgoing-side IMX at step 4409. The outgoing- side IMX transmits an IAM signal for call setup to the G-IMX based on the information about the position (MSRN) of the G-IMX at step 4411.

[320] The G-IMX transmits the IAM signal for call setup to the 3G-IP at step 4413. The

3G-IP transmits the IAM signal to the G-IMX in order to transmit a call to the called subscriber at step 4415. The G-IMX transmits the SRI signal to the HLR in order to query the location of the incoming-side IMX, and receives an SRI response signal, including the information about the position of the incoming- side IMX, from the HLR at step 4417. The G-IMX transmits the IAM signal to the incoming-side G-IMX based on the information about the position of the incoming- side IMX at step 4419.

[321] The incoming-side IMX attempts access to the called subscriber, and waits for a response therefrom at step 4421. If the called subscriber is valid, the incoming-side IMX transmits the ACM signal to the G-IMX, and responds to it at step 4423. The G- IMX transmits the ACM signal to the 3G-IP at step 4425. The 3G-IP transmits the ACM signal to the G-IMX at step 4427. The G-IMX transmits the ACM signal, received from the 3G-IP, to the outgoing-side IMX at step 4429. The 3G-IP sets up a voice and video channel with the incoming- side IMX at step 4431.

[322] If the voice and video channel with the incoming-side IMX is set up, the 3G-IP sets up a voice and video channel with the calling subscriber at step 4433. Thereafter, in the case where the called subscriber does not answer a telephone or is switched to the VMS, the 3G-IP transmits a video message or a guidance broadcast, which is received from the incoming-side IMX, for video message transmission to the calling subscriber at step 4435. The calling subscriber transmits a DTMF signal for the video message transmission service to the 3G-IP at step 4437.

[323] The 3G-IP senses the DTMF input by the calling subscriber, and releases the call with the calling subscriber at steps 4439 and 4441. The 3G-IP transmits a guidance broadcast for the video message transmission service to the calling subscriber at step 4443. The calling subscriber records the guidance broadcast according to a message at step 4445. Subsequent steps are the same as those after step 921 of FIG. 9.

[324] FIG. 45 is a view illustrating a procedure in which a calling subscriber uses the video message transmission service using a feature code, or WAP menus such as ME/ KUN.

[325] Referring to FIG. 45, the calling subscriber accesses the service providing apparatus using the wireless Internet menu or feature code of a terminal in order to leave a video message for the called subscriber at step 4501. The service providing apparatus transmits a message providing notification of the video message transmission service to the calling subscriber at step 4503. Thereafter, the service providing apparatus outputs a guidance announcement stating "Please start recording after the 'beep' sound and press # after recording," at step 4505. The calling subscriber transmits a video message to the service providing apparatus according to the guidance announcement at step 4507. The service providing apparatus stores the received video message, transmits a guidance announcement, stating "We will transmit your message to the calling subscriber. Thank you for using this service," at step 4509, and releases the call with the calling subscriber at step 4511.

[326] Thereafter, since steps 4513 to 4523 of transmitting the recorded message from the service providing apparatus to the called subscriber are the same as steps 4313 to 4323, which have been described with reference to FIG. 43, descriptions thereof are omitted here.

[327] FIG. 46 is a view showing an example of a screen for a function of scheduled transmission of a video message through the WEB according to a preferred embodiment of the present invention.

[328] Referring to FIG. 46, in the case where a user accesses the service providing apparatus through the WEB in order to transmit a video message, the service providing apparatus outputs a video message transmission screen 4601 to a user terminal. In order to perform scheduled transmission through the WEB, the user records a video message, selects a scheduled transmission flag 4603, and inputs information about a called party and scheduled date. Thereafter, the service providing apparatus transmits a video message, which was recorded on the date specified by the user, to the called subscriber.

[329] FIG. 47 is a view showing an example of the screen of a mobile terminal for scheduled transmission of a video message through a WAP according to a preferred embodiment of the present invention.

[330] Referring to FIG. 47, in order to perform video message transmission, the user of a mobile terminal accesses the service providing apparatus through the WAP by inputting information about the subscriber's own number and a wireless Internet access key at step 4701. The service providing apparatus outputs a video message service screen 4703 to the display unit of the mobile terminal. If the user of the mobile terminal selects and presses a video message transmission item on the video message service screen 4703, a video message record screen 4705 is output, and the user records the video message to be transmitted at step 4705. If the recording is completed, a message transmission screen 4707 is output onto the display unit of the mobile terminal. The message transmission screen 4707 includes an immediate transmission menu and a scheduled transmission menu. The user may set the message to be transmitted at a desired time by pressing the scheduled transmission menu on the message transmission screen 4707. Thereafter, if immediate transmission or scheduled transmission setting is completed, a network connection completion screen 4709 is output on the display unit.

[331] FIG. 48 is a view illustrating a WEB interface for transmitting a video message through the WEB according to a preferred embodiment of the present invention. The WEB interface can be used while a calling subscriber travels overseas or is in an environment in which it is difficult to use a telephone, transmit a video and voice message through the WEB, as in the calling terminal, or check received messages.

[332] Referring to FIG. 48, a user who wants video message transmission through the WEB accesses the service providing apparatus through the WEB, and records a video message through a user interface provided by the service providing apparatus at step 4801. The recorded video is converted into a format recordable by a user, such as AVI, and the video file having the format is transformed into a codec, which can be accommodated in the service providing apparatus, such as H.263 or MPEG-4, AMR and the like at step 4803. The transformed codec is converted into a 3GP format and stored. The message is transmitted to the called subscriber through the 3G-IP at step 4805.

[333] Meanwhile, in the case where a user who receives a video message wants to check a video received through the WEB, a called party accesses the service providing apparatus through the WEB, and requests a message, received through a user interface provided by the service providing apparatus, to be checked at step 4807. The service providing apparatus converts the video message having the 3GP format into a format such as AVI at step 4809, and transmits the message to the called party over the WEB. The terminal of the user plays the video message using a player such as Media Player at step 4811.

[334] The present invention is not limited to the embodiments, and many variations can be made by those skilled in the art without departing from the scope and spirit of the present invention.

Claims

[1] A method of transmitting video messages through a service providing apparatus that is connected to a calling terminal, a called terminal, a Home Location Register (HLR) and an Mobile Switching Center (MSC) via a W-CDMA network, the method comprising the steps of: receiving a call connection request signal from the MSC, wherein the call connection request signal corresponds to a first call setup request signal received from the calling terminal by the MSC; transmitting a call connection response signal to the MSC in response to the call connection request signal, wherein the MSC transmits a first call setup response signal to the calling terminal in response to the call connection response signal; setting up a first voice and video channel with the calling terminal based on the call connection response signal and the first call setup response signal; receiving a video message from the calling terminal via the first voice and video channel; storing the video message; releasing the first voice and video channel; transmitting an outbound call request signal to the MSC to set up a connection to the called terminal, wherein the MSC transmits a second call setup request signal to the called terminal in response to the outbound call request signal and receives a second call setup response signal in response thereto; receiving an outbound call response signal from the MSC in response to the second call setup response signal; setting up a second voice and video channel with the called terminal based on the second call setup response signal and the outbound call response signal; and transmitting the video message to the called terminal via the second voice and video channel.

[2] A method of transmitting video messages through a service providing apparatus that is connected to a calling terminal, a called terminal, an HLR and an MSC via a W-CDMA network, the method comprising the steps of: receiving a first call connection request signal from the MSC, wherein the first call connection request signal corresponds to a first call setup request signal received from the calling terminal by the MSC; transmitting a first call connection response signal to the MSC in response to the first call connection request signal, wherein the MSC transmits a first call setup response signal to the calling terminal in response to the first call connection response signal; setting up a first voice and video channel with the calling terminal based on the first call connection response signal and the first call setup response signal; receiving a video message from the calling terminal via the first voice and video channel; storing the video message; releasing the first voice and video channel; transmitting a callback SMS message to the called terminal, wherein the called terminal transmits a second call setup request signal to the MSC using the callback SMS message to set up a call connection to the service providing apparatus; receiving a second call connection request signal from the MSC in response to the second call setup request signal; transmitting a second call connection response signal to the MSC in response to the second call connection request signal, wherein the MSC transmits a second call setup response signal to the called terminal in response to the second call connection response signal; setting up a second voice and video channel with the called terminal based on the second call connection response signal and the second call setup response signal; and transmitting the video message to the called terminal via the second voice and video channel.

[3] A method of transmitting video messages through a service providing apparatus that is connected to a calling terminal, an MSC, an HLR, a Service Control Point (SCP) and a called terminal via a W-CDMA network, the method comprising the steps of: receiving a call connection request signal from the MSC, wherein the call connection request signal corresponds to a Furnish Charging Information (FCI) signal and an Establish Temporary Connection (ETC) signal, which are received by the MSC from the SCP in response to an Initial Detection Point (IDP) signal for a video message transmission service when the MSC receives a first call setup request signal from the calling terminal, transmits a Send Routing Information (SRI) signal for querying a location of the service providing apparatus to the HLR, and transmits the IDP signal to the SCP based on a SRI response signal received in response to the SRI signal; transmitting a call connection response signal to the MSC in response to the call connection request signal, wherein the MSC transmits a first call setup response signal to the calling terminal in response to the call connection response signal; setting up a first voice and video channel with the calling terminal based on the call connection response signal and the first call setup response signal; transmitting a first Assist Request Instructions (ARI) signal for fetching a temporary number corresponding to the calling terminal to the SCP; receiving a first Play Announcement (PA) signal, including the temporary number corresponding to the calling terminal, from the SCP in response to the first ARI signal; receiving a video message from the calling terminal based on the temporary number of the calling terminal and the first voice and video channel; storing the video message; releasing the first voice and video channel; transmitting an outbound call request signal to the MSC to set up a connection to the called terminal, wherein the MSC transmits a second call setup request signal to the called terminal in response to the outbound call request signal, and receives a second call setup response signal in response thereto; receiving an outbound call response signal from the MSC in response to the second call setup response signal; setting up a second voice and video channel with the called terminal based on the second call setup response signal and the outbound call response signal; transmitting a second ARI signal for requesting video message information to the SCP; receiving a second PA signal, including the video message information, transmitted in response to the second ARI signal; and transmitting the video message to the called terminal based on the second PA signal.

[4] A method of transmitting video messages through a service providing apparatus that is connected to a calling terminal, an MSC, an HLR, an SCP and a called terminal via a W-CDMA network, the method comprising the steps of: receiving a first call connection request signal from the MSC, wherein the first call connection request signal corresponds to a first FCI signal and a first ETC signal, which are received by the MSC from the SCP in response to a first IDP signal for a video message transmission service when the MSC receives a first call setup request signal from the calling terminal, transmits a first SRI signal for querying a location of the service providing apparatus to the HLR, and transmits the first IDP signal to the SCP based on a first SRI response signal received in response to the first SRI signal; transmitting a first call connection response signal to the MSC in response to the first call connection request signal, wherein the MSC transmits a first call setup response signal to the calling terminal in response to the first call connection response signal; setting up a first voice and video channel with the calling terminal based on the first call connection response signal and the first call setup response signal; transmitting a first ARI signal, for fetching a temporary number corresponding to the calling terminal, to the SCP; receiving a first PA signal, including the temporary number corresponding to the calling terminal, from the SCP in response to the first ARI signal; receiving a video message from the calling terminal based on the temporary number of the calling terminal and the first voice and video channel; storing the video message; releasing the first voice and video channel; transmitting a callback SMS message to the called terminal, wherein the called terminal transmits a second call setup request signal to the MSC using the callback SMS message to set up a call connection to the service providing apparatus, and the MSC transmits a second SRI signal for querying a location of the service providing apparatus to the HLR in response to the second call setup request signal, transmits a second IDP signal for a video message transmission service to the SCP based on a second SRI response signal received in response to the second SRI signal, and receives a second FCI signal and a second ETC signal from the SCP in response to the second IDP signal; receiving a second call connection request signal from the MSC in response to the second FCI signal and the second ETC signal; transmitting a second call connection response signal to the MSC in response to the second call connection request signal, wherein the MSC transmits a second call setup response signal to the called terminal in response to the second call connection response signal; setting up a second voice and video channel with the calling terminal based on the second call connection response signal and the second call setup response signal; transmitting a second ARI signal, for requesting video message information, to the SCP; receiving a second PA signal, including the video message information, transmitted in response to the second ARI signal; and transmitting the video message to the called terminal based on the second PA signal.

[5] The method of any one of claims 1 to 4, wherein the step of setting up the first voice and video channel with the calling terminal comprises the steps of: determining a master/slave relationship with the calling terminal; transmitting and receiving information about capacity to/from the calling terminal; transmitting and receiving a MUX table to/from the calling terminal; setting up a video channel with the calling terminal; setting up a voice channel with the calling terminal; and synchronizing video and voice by transmitting video reference frame information to the calling terminal.

[6] The method of any one of claims 1 to 4, wherein the step of setting up the second voice and video channel with the calling terminal comprises the steps of: determining a master/slave relationship with the called terminal; transmitting and receiving information about capacity to/from the called terminal; transmitting and receiving a MUX table to/from the called terminal; setting up a video channel with the called terminal; setting up a voice channel with the called terminal; and synchronizing video and voice by transmitting video reference frame information to the called terminal.

[7] The method of claim 3 or 4, further comprising the step of transmitting a

Specialized Resource Report (SRR) signal, providing notification of the SCP of the storage content, after storing the video message received from the calling terminal.

[8] The method of any one of claims 1 to 4, further comprising the steps of: receiving a wireless Internet access request signal from the calling terminal, wherein the wireless Internet access request signal is generated by inputting a telephone number of the called terminal and pressing a wireless Internet connection button of the calling terminal; transmitting a supplementary service-integrated screen, including a supplementary service list, to the calling terminal; receiving a video message transmission service request signal from the calling terminal; and releasing a wireless Internet connection with the calling terminal.

[9] The method of any one of claims 1 to 4, wherein the first call setup request signal includes a feature code of the video message transmission service and an identifier of the called terminal.

[10] The method of any one of claims 1 to 4, wherein the first call setup request signal is transmitted from the calling terminal to the MSC using one of a method using a hot key, a method using a message box menu, and a method using a telephone directory menu.

[11] The method of any one of claims 1 to 4, further comprising the steps of: transmitting a guidance announcement for response to the called terminal; receiving a video message response request signal from the called terminal in response to the guidance announcement; transmitting a guidance announcement for video message transmission to the called terminal in response to the video message response request signal; receiving a response video message from the called terminal; storing the response video message; releasing the second voice and video channel; transmitting an outbound call request signal to the MSC to set up a connection with the calling terminal, wherein the MSC transmits a third call setup request signal to the calling terminal in response to the outbound call request signal, and receives a third call setup response sign in response thereto; receiving an outbound call response signal from the MSC in response to the third call setup response signal; setting up a third voice and video channel with the calling terminal based on the third call setup response signal and the outbound call response signal; and transmitting the response video message to the calling terminal via the third voice and video channel.

[12] The method of any one of claims 1 to 4, further comprising the steps of: transmitting a guidance announcement for response to the called terminal; receiving a calling terminal connection request signal from the called terminal in response to the guidance announcement; transmitting an outbound call request signal to the MSC for connection to the calling terminal, wherein the MSC transmits a third call setup request signal to the calling terminal in response to the outbound call request signal and receives a third call setup response signal in response to the third call setup request signal; receiving an outbound call response signal from the MSC in response to the third call setup response signal; and setting up a third voice and video channel with the calling terminal based on the third call setup response signal and the outbound call response signal; wherein the calling terminal and the called terminal make a video call using the second voice and video channel and the third voice and video channel.

[13] The method of any one of claims 1 to 4, further comprising the steps of: transmitting a guidance announcement for responding to the called terminal; receiving a calling terminal paging request signal from the called terminal in response to the guidance announcement; releasing the second voice and video channel; transmitting an outbound call request signal to the MSC in order to page the calling terminal, wherein the MSC transmits a third call setup request signal to the calling terminal in response to the outbound call request signal and receives a third call setup response signal in response to the third call setup request signal; receiving an outbound call response signal from the MSC in response to the third call setup response signal; transmitting an outbound call request signal to the MSC in order to page the called terminal, wherein the MSC transmits a fourth call setup request signal to the called terminal in response to the outbound call request signal, and receives a fourth call setup response signal in response to the fourth call setup request signal; receiving an outbound call response signal from the MSC in response to the fourth call setup response signal; and setting up a third voice and video channel between the calling terminal and the called terminal; wherein the calling terminal and the called terminal make a video call using the third voice and video channel.

[14] The method of claim 1 or 3, further comprising the steps of: transmitting a called subscriber state request signal for querying a state of the called terminal to the HLR; and receiving a called subscriber state response signal from the HLR; wherein, if, as a result of the reception of the called subscriber state response signal, the called terminal is in a standby state, the outbound call request signal is transmitted to the MSC to set up a connection to the called terminal.

[15] The method of claim 2 or 4, further comprising the steps of: transmitting a called subscriber state request signal to query the state of the called terminal to the HLR; and receiving a called subscriber state response signal from the HLR; wherein if, according to the received called subscriber state response signal, the called terminal is determined to be in a standby state, the callback SMS message is transmitted to the called terminal.

[16] The method of claim 1 or 3, wherein: the second call setup response signal and the outbound call response signal include an Address Complete Message (ACM) and an Answer Message (ANM); and the ACM includes a backward call indicator indicating information of a state of the called terminal.

[17] The method of claim 1 or 3, wherein: the second call setup response signal and the outbound call response signal include an ACM, a Call Progress (CPG) and an ANM; and the service providing apparatus determines that the called terminal is not in a standby state when the CPG is received.

[18] The method of any one of claims 1 to 4, further comprising the step of the service providing apparatus's converting the video message into a voice codec if the called terminal does not support 3G.

[19] The method of any one of claims 1 to 4, wherein the service providing apparatus receives a voice message from the calling terminal, combines the voice message with previously stored video and generates a video message if the calling terminal does not support 3G.

[20] A method of transmitting video messages through a service providing apparatus that is connected to a calling terminal, a called terminal, an calling side MSC and an called side MSC via a W-CDMA network, the method comprising the steps of: receiving a first call connection request signal from the calling side MSC, wherein the first call connection request signal corresponds to a first call setup request signal, which is transmitted from the calling terminal to the calling side

MSC to set up a telephone call to the called terminal; transmitting a second call connection request signal to the called side MSC in response to the first call connection request signal; receiving a first call connection response signal from the called side MSC in r esponse to the second call connection request signal; transmitting a second call connection response signal to the calling side MSC in response to the first call connection response signal; setting up a first voice and video channel with the called side MSC based on the first call connection response signal; setting up a second voice and video channel with the calling side MSC based on the second call connection response signal; receiving a guidance announcement from the called side MSC; transmitting the guidance announcement to the calling terminal; receiving a DTMF signal for video message transmission from the calling terminal according to the guidance announcement; releasing the first voice and video channel; transmitting a message for video message transmission to the calling terminal; receiving a video message from the calling terminal according to the message for video message transmission; storing the video message; releasing the first voice and video channel; transmitting an outbound call request signal to the MSC for connection to the called terminal, wherein the MSC transmits a second call setup request signal to the called terminal in response to the outbound call request signal, and receives a second call setup response signal in response thereto; receiving an outbound call response signal from the MSC in response to the second call setup response signal; setting up a second voice and video channel with the called terminal based on the second call setup response signal and the outbound call response signal; and transmitting the video message to the called terminal via the second voice and video channel.

[21] A service providing apparatus for transmitting video messages, the service providing apparatus being connected to a calling terminal, a called terminal, a

Home Location Register (HLR) and an Mobile Switching Center (MSC) via a

W-CDMA network, the service providing apparatus comprising: means for receiving a call connection request signal from the MSC, wherein the call connection request signal corresponds to a first call setup request signal received from the calling terminal by the MSC; means for transmitting a call connection response signal to the MSC in response to the call connection request signal, wherein the MSC transmits a first call setup response signal to the calling terminal in response to the call connection response signal; means for setting up a first voice and video channel with the calling terminal based on the call connection response signal and the first call setup response signal; means for receiving a video message from the calling terminal via the first voice and video channel; means for storing the video message; means for releasing the first voice and video channel; means for transmitting an outbound call request signal to the MSC to set up a connection to the called terminal, wherein the MSC transmits a second call setup request signal to the called terminal in response to the outbound call request signal and receives a second call setup response signal in response thereto; means for receiving an outbound call response signal from the MSC in response to the second call setup response signal; means for setting up a second voice and video channel with the called terminal based on the second call setup response signal and the outbound call response signal; and means for transmitting the video message to the called terminal via the second voice and video channel.

[22] A service providing apparatus for transmitting video messages, the service providing apparatus being connected to a calling terminal, a called terminal, an

HLR and an MSC via a W-CDMA network, the service providing apparatus comprising: means for receiving a first call connection request signal from the MSC, wherein the first call connection request signal corresponds to a first call setup request signal received from the calling terminal by the MSC; means for transmitting a first call connection response signal to the MSC in response to the first call connection request signal, wherein the MSC transmits a first call setup response signal to the calling terminal in response to the first call connection response signal; means for setting up a first voice and video channel with the calling terminal based on the first call connection response signal and the first call setup response signal; means for receiving a video message from the calling terminal via the first voice and video channel; means for storing the video message; means for releasing the first voice and video channel; means for transmitting a callback SMS message to the called terminal, wherein the called terminal transmits a second call setup request signal to the MSC using the callback SMS message to set up a call connection to the service providing apparatus; means for receiving a second call connection request signal from the MSC in response to the second call setup request signal; means for transmitting a second call connection response signal to the MSC in response to the second call connection request signal, wherein the MSC transmits a second call setup response signal to the called terminal in response to the second call connection response signal; means for setting up a second voice and video channel with the called terminal based on the second call connection response signal and the second call setup response signal; and means for transmitting the video message to the called terminal via the second voice and video channel.

[23] A service providing apparatus for transmitting video messages, the service providing apparatus being connected to a calling terminal, an MSC, an HLR, a

Service Control Point (SCP) and a called terminal via a W-CDMA network, the service providing apparatus comprising: means for receiving a call connection request signal from the MSC, wherein the call connection request signal corresponds to a Furnish Charging Information (FCI) signal and an Establish Temporary Connection (ETC) signal, which are received by the MSC from the SCP in response to an Initial Detection Point (IDP) signal for a video message transmission service when the MSC receives a first call setup request signal from the calling terminal, transmits a Send Routing Information (SRI) signal for querying a location of the service providing apparatus to the HLR, and transmits the IDP signal to the SCP based on a SRI response signal received in response to the SRI signal; means for transmitting a call connection response signal to the MSC in response to the call connection request signal, wherein the MSC transmits a first call setup response signal to the calling terminal in response to the call connection response signal; means for setting up a first voice and video channel with the calling terminal based on the call connection response signal and the first call setup response signal; means for transmitting a first Assist Request Instructions (ARI) signal for fetching a temporary number corresponding to the calling terminal to the SCP; means for receiving a first Play Announcement (PA) signal, including the temporary number corresponding to the calling terminal, from the SCP in response to the first ARI signal; means for receiving a video message from the calling terminal based on the temporary number of the calling terminal and the first voice and video channel; means for storing the video message; means for releasing the first voice and video channel; means for transmitting an outbound call request signal to the MSC to set up a connection to the called terminal, wherein the MSC transmits a second call setup request signal to the called terminal in response to the outbound call request signal, and receives a second call setup response signal in response thereto; means for receiving an outbound call response signal from the MSC in response to the second call setup response signal; means for setting up a second voice and video channel with the called terminal based on the second call setup response signal and the outbound call response signal; means for transmitting a second ARI signal for requesting video message information to the SCP; means for receiving a second PA signal, including the video message in- formation, transmitted in response to the second ARI signal; and means for transmitting the video message to the called terminal based on the second PA signal.

[24] A service providing apparatus for transmitting video messages, the service providing apparatus being connected to a calling terminal, an MSC, an HLR, an SCP and a called terminal via a W-CDMA network, the service providing apparatus comprising: means for receiving a first call connection request signal from the MSC, wherein the first call connection request signal corresponds to a first FCI signal and a first ETC signal, which are received by the MSC from the SCP in response to a first IDP signal for a video message transmission service when the MSC receives a first call setup request signal from the calling terminal, transmits a first SRI signal for querying a location of the service providing apparatus to the HLR, and transmits the first IDP signal to the SCP based on a first SRI response signal received in response to the first SRI signal; means for transmitting a first call connection response signal to the MSC in response to the first call connection request signal, wherein the MSC transmits a first call setup response signal to the calling terminal in response to the first call connection response signal; means for setting up a first voice and video channel with the calling terminal based on the first call connection response signal and the first call setup response signal; means for transmitting a first ARI signal, for fetching a temporary number corresponding to the calling terminal, to the SCP; means for receiving a first PA signal, including the temporary number corresponding to the calling terminal, from the SCP in response to the first ARI signal; means for receiving a video message from the calling terminal based on the temporary number of the calling terminal and the first voice and video channel; means for storing the video message; means for releasing the first voice and video channel; means for transmitting a callback SMS message to the called terminal, wherein the called terminal transmits a second call setup request signal to the MSC using the callback SMS message to set up a call connection to the service providing apparatus, and the MSC transmits a second SRI signal for querying a location of the service providing apparatus to the HLR in response to the second call setup request signal, transmits a second IDP signal for a video message transmission service to the SCP based on a second SRI response signal received in response to the second SRI signal, and receives a second FCI signal and a second ETC signal from the SCP in response to the second IDP signal; means for receiving a second call connection request signal from the MSC in response to the second FCI signal and the second ETC signal; means for transmitting a second call connection response signal to the MSC in response to the second call connection request signal, wherein the MSC transmits a second call setup response signal to the called terminal in response to the second call connection response signal; means for setting up a second voice and video channel with the calling terminal based on the second call connection response signal and the second call setup response signal; means for transmitting a second ARI signal, for requesting video message information, to the SCP; means for receiving a second PA signal, including the video message information, transmitted in response to the second ARI signal; and means for transmitting the video message to the called terminal based on the second PA signal.

[25] A service providing apparatus for transmitting video messages, the service providing apparatus being connected to a calling terminal, a called terminal, an calling side MSC and an called side MSC via a W-CDMA network, the service providing apparatus comprising: means for receiving a first call connection request signal from the calling side

MSC, wherein the first call connection request signal corresponds to a first call setup request signal, which is transmitted from the calling terminal to the calling side MSC to set up a telephone call to the called terminal; means for transmitting a second call connection request signal to the called side

MSC in response to the first call connection request signal; means for receiving a first call connection response signal from the called side

MSC in response to the second call connection request signal; means for transmitting a second call connection response signal to the calling side MSC in response to the first call connection response signal; means for setting up a first voice and video channel with the called side MSC based on the first call connection response signal; means for setting up a second voice and video channel with the calling side MSC based on the second call connection response signal; means for receiving a guidance announcement from the called side MSC; means for transmitting the guidance announcement to the calling terminal; means for receiving a DTMF signal for video message transmission from the calling terminal according to the guidance announcement; means for releasing the first voice and video channel; means for transmitting a message for video message transmission to the calling terminal; means for receiving a video message from the calling terminal according to the message for video message transmission; means for storing the video message; means for releasing the first voice and video channel; means for transmitting an outbound call request signal to the MSC for connection to the called terminal, wherein the MSC transmits a second call setup request signal to the called terminal in response to the outbound call request signal, and receives a second call setup response signal in response thereto; means for receiving an outbound call response signal from the MSC in response to the second call setup response signal; means for setting up a second voice and video channel with the called terminal based on the second call setup response signal and the outbound call response signal; and means for transmitting the video message to the called terminal via the second voice and video channel.

[26] A service providing apparatus for transmitting video messages, the service providing apparatus being connected to a calling terminal, a called terminal, a Home Location Register (HLR) and an Mobile Switching Center (MSC) via a W-CDMA network, the the service providing apparatus comprising: memory for storing a program; and a processor for executing the program in conjunction with the memory; wherein the processor, using the program, receives a call connection request signal from the MSC, wherein the call connection request signal corresponds to a first call setup request signal received from the calling terminal by the MSC; transmits a call connection response signal to the MSC in response to the call connection request signal, wherein the MSC transmits a first call setup response signal to the calling terminal in response to the call connection response signal; sets up a first voice and video channel with the calling terminal based on the call connection response signal and the first call setup response signal; receives a video message from the calling terminal via the first voice and video channel; stores the video message; releases the first voice and video channel; transmits an outbound call request signal to the MSC to set up a connection to the called terminal, wherein the MSC transmits a second call setup request signal to the called terminal in response to the outbound call request signal and receives a second call setup response signal in response thereto; receives an outbound call response signal from the MSC in response to the second call setup response signal; sets up a second voice and video channel with the called terminal based on the second call setup response signal and the outbound call response signal; and transmits the video message to the called terminal via the second voice and video channel.

[27] A service providing apparatus for transmitting video messages, the service providing apparatus being connected to a calling terminal, a called terminal, an HLR and an MSC via a W-CDMA network, the service providing apparatus comprising: memory for storing a program; and a processor for executing the program in conjunction with the memory; wherein the processor, using the program, receives a first call connection request signal from the MSC, wherein the first call connection request signal corresponds to a first call setup request signal received from the calling terminal by the MSC; transmits a first call connection response signal to the MSC in response to the first call connection request signal, wherein the MSC transmits a first call setup response signal to the calling terminal in response to the first call connection response signal; sets up a first voice and video channel with the calling terminal based on the first call connection response signal and the first call setup response signal; receives a video message from the calling terminal via the first voice and video channel; stores the video message; releases the first voice and video channel; transmits a callback SMS message to the called terminal, wherein the called terminal transmits a second call setup request signal to the MSC using the callback SMS message to set up a call connection to the service providing apparatus; receives a second call connection request signal from the MSC in response to the second call setup request signal; transmits a second call connection response signal to the MSC in response to the second call connection request signal, wherein the MSC transmits a second call setup response signal to the called terminal in response to the second call connection response signal; sets up a second voice and video channel with the called terminal based on the second call connection response signal and the second call setup response signal; and transmits the video message to the called terminal via the second voice and video channel.

[28] A service providing apparatus for transmitting video messages, the service providing apparatus being connected to a calling terminal, an MSC, an HLR, a Service Control Point (SCP) and a called terminal via a W-CDMA network, the service providing apparatus comprising: memory for storing a program; and a processor for executing the program in conjunction with the memory; wherein the processor, using the program, receives a call connection request signal from the MSC, wherein the call connection request signal corresponds to a Furnish Charging Information (FCI) signal and an Establish Temporary Connection (ETC) signal, which are received by the MSC from the SCP in response to an Initial Detection Point (IDP) signal for a video message transmission service when the MSC receives a first call setup request signal from the calling terminal, transmits a Send Routing Information (SRI) signal for querying a location of the service providing apparatus to the HLR, and transmits the IDP signal to the SCP based on a SRI response signal received in response to the SRI signal; transmits a call connection response signal to the MSC in response to the call connection request signal, wherein the MSC transmits a first call setup response signal to the calling terminal in response to the call connection response signal; sets up a first voice and video channel with the calling terminal based on the call connection response signal and the first call setup response signal; transmits a first Assist Request Instructions (ARI) signal for fetching a temporary number corresponding to the calling terminal to the SCP; receives a first Play Announcement (PA) signal, including the temporary number corresponding to the calling terminal, from the SCP in response to the first ARI signal; receives a video message from the calling terminal based on the temporary number of the calling terminal and the first voice and video channel; stores the video message; releases the first voice and video channel; transmits an outbound call request signal to the MSC to set up a connection to the called terminal, wherein the MSC transmits a second call setup request signal to the called terminal in response to the outbound call request signal, and receives a second call setup response signal in response thereto; receives an outbound call response signal from the MSC in response to the second call setup response signal; sets up a second voice and video channel with the called terminal based on the second call setup response signal and the outbound call response signal; transmits a second ARI signal for requesting video message information to the SCP; receives a second PA signal, including the video message information, transmitted in response to the second ARI signal; and transmits the video message to the called terminal based on the second PA signal. [29] A service providing apparatus for transmitting video messages, the service providing apparatus being connected to a calling terminal, an MSC, an HLR, an SCP and a called terminal via a W-CDMA network, the service providing apparatus comprising: memory for storing a program; and a processor for executing the program in conjunction with the memory; wherein the processor, using the program, receives a first call connection request signal from the MSC, wherein the first call connection request signal corresponds to a first FCI signal and a first ETC signal, which are received by the MSC from the SCP in response to a first IDP signal for a video message transmission service when the MSC receives a first call setup request signal from the calling terminal, transmits a first SRI signal for querying a location of the service providing apparatus to the HLR, and transmits the first IDP signal to the SCP based on a first SRI response signal received in response to the first SRI signal; transmits a first call connection response signal to the MSC in response to the first call connection request signal, wherein the MSC transmits a first call setup response signal to the calling terminal in response to the first call connection response signal; sets up a first voice and video channel with the calling terminal based on the first call connection response signal and the first call setup response signal; transmits a first ARI signal, for fetching a temporary number corresponding to the calling terminal, to the SCP; receives a first PA signal, including the temporary number corresponding to the calling terminal, from the SCP in response to the first ARI signal; receives a video message from the calling terminal based on the temporary number of the calling terminal and the first voice and video channel; stores video message; releases the first voice and video channel; transmits a callback SMS message to the called terminal, wherein the called terminal transmits a second call setup request signal to the MSC using the callback SMS message to set up a call connection to the service providing apparatus, and the MSC transmits a second SRI signal for querying a location of the service providing apparatus to the HLR in response to the second call setup request signal, transmits a second IDP signal for a video message transmission service to the SCP based on a second SRI response signal received in response to the second SRI signal, and receives a second FCI signal and a second ETC signal from the SCP in response to the second IDP signal; receives a second call connection request signal from the MSC in response to the second FCI signal and the second ETC signal; transmits a second call connection response signal to the MSC in response to the second call connection request signal, wherein the MSC transmits a second call setup response signal to the called terminal in response to the second call connection response signal; sets up a second voice and video channel with the calling terminal based on the second call connection response signal and the second call setup response signal; transmits a second ARI signal, for requesting video message information, to the SCP; receives a second PA signal, including the video message information, transmitted in response to the second ARI signal; and transmits the video message to the called terminal based on the second PA signal. [30] A service providing apparatus for transmitting video messages, the service providing apparatus being connected to a calling terminal, a called terminal, an calling side MSC and an called side MSC via a W-CDMA network, the service providing apparatus comprising: memory for storing a program; and a processor for executing the program in conjunction with the memory; wherein the processor, using the program, receives a first call connection request signal from the calling side MSC, wherein the first call connection request signal corresponds to a first call setup request signal, which is transmitted from the calling terminal to the calling side MSC to set up a telephone call to the called terminal; transmits a second call connection request signal to the called side MSC in response to the first call connection request signal; receives a first call connection response signal from the called side MSC in response to the second call connection request signal; transmits a second call connection response signal to the calling side MSC in response to the first call connection response signal; sets up a first voice and video channel with the called side MSC based on the first call connection response signal; sets a second voice and video channel with the calling side MSC based on the second call connection response signal; receives a guidance announcement from the called side MSC; transmits the guidance announcement to the calling terminal; receives a DTMF signal for video message transmission from the calling terminal according to the guidance announcement; releases the first voice and video channel; transmits a message for video message transmission to the calling terminal; receives a video message from the calling terminal according to the message for video message transmission; stores the video message; releases the first voice and video channel; transmits an outbound call request signal to the MSC for connection to the called terminal, wherein the MSC transmits a second call setup request signal to the called terminal in response to the outbound call request signal, and receives a second call setup response signal in response thereto; receives an outbound call response signal from the MSC in response to the second call setup response signal; sets up a second voice and video channel with the called terminal based on the second call setup response signal and the outbound call response signal; and transmits the video message to the called terminal via the second voice and video channel.