KR20060066764A - Method and apparatus for transforming voice message into text message and transmitting the same - Google Patents

Abstract

The present invention relates to a method and apparatus for converting a voice message into a text message and transmitting the same. The present invention provides a method of converting a voice message into a text message in a special call service (SCS) server and transmitting the text message, wherein the call connection request is received from the exchange. After receiving the function code and the called number is generated based on the SCS server information corresponding to the STT function code collected in conjunction with the home location register-transmitting the call connection response to the exchange, by the call connection response and the originating terminal Transmitting a text call guide message to the calling terminal through the established call path, receiving a text call voice message from the calling terminal through the call path formed with the calling terminal, storing the text call voice message, and text call voice message. Converting the text message into a text message and sending the text message transmission request to the short message service center. , A short message service center can send a text message corresponding to the character call voice messages to the destination terminal.

Voice, text, message, conversion

Description

Method and apparatus for transforming voice message into text message and transmitting the same}             

1 is a schematic diagram of a system for converting and transmitting a voice message to a text message according to a preferred embodiment of the present invention.

2 is a flowchart schematically illustrating a method for converting a voice message into a text message and transmitting the same according to a preferred embodiment of the present invention.

3 is a diagram schematically showing a system configuration of an SCS server according to a preferred embodiment of the present invention.

4 is a diagram schematically showing a module configuration of an SCS server according to a preferred embodiment of the present invention.

5 is a signal flow diagram schematically illustrating a process of selecting an STT service through a wireless Internet access using a number URL according to a preferred embodiment of the present invention.

6 is a signal flow diagram schematically illustrating a process of selecting an STT service by directly inputting a function code according to a preferred embodiment of the present invention.

7 is a diagram schematically showing a text message screen output through a called terminal according to a preferred embodiment of the present invention.

8 is a diagram schematically illustrating a signal flow when a called terminal user who has confirmed a text message selects a callback according to an exemplary embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

101: outgoing terminal 105: SCS server

107: short message service center 109: incoming terminal

The present invention relates to a method and apparatus for converting a voice message into a text message and transmitting the same.

Recently, with the development of mobile communication, text message service has become the second largest after voice call service. However, when a text message is transmitted through the mobile terminal, the user of the mobile terminal has an inconvenience of making a sentence by combining vowels, consonants, and other characters displayed on the keypad.

In order to solve this inconvenience, a method for transmitting a text message using voice recognition of a portable terminal has been disclosed (Korean Patent Publication No. 10-2002-0034668). In the conventional method for transmitting a text message using voice recognition of the portable terminal, the text message transmission method of the portable terminal includes a process of displaying a voice / text conversion service guide message when composing a message and a base station when selecting the voice / text conversion service. A process of accessing a message, a process of transmitting a voice message of a user to the base station, a process of storing the received voice message at the base station, a process of converting the stored voice message into a text message at the base station, and the converted text message. It characterized in that it comprises a process of transmitting to the terminal and the process of inputting the called number and the text message to the input destination number.

However, according to the conventional method for transmitting a text message using voice recognition of a portable terminal, since the calling terminal receives the converted text message from the base station and inputs the called number, the text message is transmitted to the called terminal. There was a downside. In addition, according to the conventional invention, even if the converted text message is not accurate, the called terminal user could not confirm the original voice message.

Meanwhile, a user interface for a wireless device based on speech recognition (Korean Patent Laid-Open Publication No. 10-2000-0070088) has also been disclosed. According to the conventional invention, using a remote speech recognition server system, voice input received from a serviced mobile device is converted into a symbol data file (e.g., a letter, numeric or control character) that can be processed by the mobile device. Convert. The conversion process begins by establishing a voice communication channel between the serviced mobile device and the voice recognition server. The user of the mobile device then starts speaking in a form that can be detected by the speech recognition server system. Upon detecting a user's voice, the voice recognition server system converts the voice into a desired symbol data file and then transmits it to the user via a separate data communication channel. When receiving a symbol data file at the mobile device, the user reviews and edits its contents to further use the file as desired.

Although the invention disclosed in Korean Patent Laid-Open Publication No. 10-2000-0070088 includes a function of converting a voice into a predetermined symbol data pi, the mobile terminal works with a remote voice recognition server system without significantly modifying hardware resources or costs. In addition, the voice recognition service can be used together with the user interface of the mobile terminal. Therefore, according to the conventional invention, when the calling terminal transmits the voice message to the remote voice recognition server system through the call path, it is not possible to transmit the text message corresponding to the voice message to the called terminal.

An object of the present invention is to provide a method and apparatus for converting and transmitting a voice message to a text message in order to send a text message quickly and conveniently through a Special Call Service (SCS) server.

Another object of the present invention is to provide a method and apparatus for converting a voice message that allows a called terminal user to confirm a voice message into a text message through a call back function when the content of the text message is unclear.

In order to achieve the above objects, in accordance with an aspect of the present invention, the voice message in the SCS (Special Call Service) server that combines with at least one mobile terminal, switch, home location register and short message service center through a mobile communication network A method for converting and transmitting a message, the method comprising: receiving a call connection request from the exchange, wherein the call connection request is performed after the exchange receives a sound to text (STT) function code and a called number from an originating terminal. Generated based on SCS server information corresponding to the STT function code collected in association with a location register; transmitting a call connection response to the exchange in response to the call connection request; Transmitting a text call guide message to the calling terminal through a call path formed with the terminal; In response to my message, receiving a text call voice message from the calling terminal through a call path formed with the calling terminal, storing the received text call voice message, and text message receiving the received text call voice message. And transmitting the text message transmission request generated based on the converted text message to the short message service center, wherein the short message service center sends the text message transmission request to the called terminal in response to the text message transmission request. The present invention may provide a method of converting and transmitting a voice message to a text message, wherein the text message corresponding to the text call voice message to which the call back URL information corresponding to the SCS server is attached is transmitted.

In a preferred embodiment, receiving a callback access request from the called terminal through a mobile communication network, wherein the callback access request is based on callback URL information attached to a text message received by the called terminal Generated-, in response to the callback connection request, extracting a text call voice message corresponding to the text message sent to the called terminal and transmitting the extracted text call voice message to the called terminal; A method for converting a voice message into a text message and transmitting the same may be provided.

According to another aspect of the present invention, in a method for converting a voice message into a text message in a special call service (SCS) server coupled with at least one mobile terminal, a switch and a short message service center through a mobile communication network, Receiving a wireless Internet access request using a Uniform Resource Locator (URL) from a terminal, wherein the wireless Internet access request includes called party number information. In response to the wireless Internet access request, a service to the calling terminal is provided. Transmitting integration screen information, wherein the service integration screen information includes function code information corresponding to a service item included in a service integration screen; receiving text call selection information from the calling terminal; Receiving a call connection request from the call connection, where the call connection request is Generated in response to a call establishment request received from an originating terminal, transmitting a call connection response to the exchange in response to the call connection request, the originating through a call path formed with the originating terminal by the call connection response; Transmitting a text call voice message to a terminal; receiving a text call voice message from the calling terminal through a call path formed with the calling terminal in response to the text call guide message; And storing the received text call voice message into a text message, and transmitting a text message transmission request generated based on the converted text message to the short message service center. The message service center sends a message to the SCS server as a called terminal in response to a text message transmission request. The present invention provides a method of converting a voice message into a text message and transmitting the text message corresponding to the text call voice message to which the corresponding call back URL information is attached.

In a preferred embodiment, receiving a callback access request from the called terminal through a mobile communication network, wherein the callback access request is based on callback URL information attached to a text message received by the called terminal Generated-, in response to the callback connection request, extracting a text call voice message corresponding to the text message sent to the called terminal and transmitting the extracted text call voice message to the called terminal; A method for converting a voice message into a text message and transmitting the same may be provided.

According to another aspect of the present invention, in the SCS (Special Call Service) server coupled with at least one mobile terminal, switch, home location register and short message service center through a mobile communication network to convert the voice message into a text message and transmit it; Means for receiving a call connection request from the exchange, wherein the call connection request is collected by the exchange in association with the home location register after receiving a sound to text (STT) function code and a called number from an originating terminal; Generated based on the SCS server information corresponding to the function code; means for sending a call connection response to the exchange in response to the call connection request, the originating over a call path formed with the calling terminal by the call connection response; Means for transmitting a text call announcement message to a terminal, in response to the text call announcement message, Means for receiving a text call voice message from the originating terminal over a formed call path, means for storing the received text call voice message, means for converting the received text call voice message into a text message and the converted text message. Means for transmitting a text message transmission request generated on the basis of the short message service center, the short message service center in response to the text message transmission request to the destination terminal callback UEL corresponding to the SCS server (Call back) It is possible to provide an SCS server, characterized in that for transmitting a text message corresponding to the text call voice message to which the URL) information is attached.

According to another aspect of the present invention, in the SCS (Special Call Service) server coupled with at least one mobile terminal, switchboard and short message service center through a mobile communication network and converts the voice message into a text message, from the originating terminal Means for receiving a wireless internet access request using a uniform resource locator (URL), wherein the wireless internet access request includes called party number information; and in response to the wireless internet access request, a service integration screen to the calling terminal Means for transmitting information, wherein the service integration screen information includes function code information corresponding to a service item included in a service integration screen; means for receiving a text call selection information from the calling terminal, a call from the exchange Means for receiving a connection request, where the call connection request is sent by the exchange. Generated in response to a call establishment request received from the apparatus, means for sending a call connection response to the exchange in response to the call connection request, to the calling terminal through a call path formed with the calling terminal by the call connection response; Means for transmitting a text call announcement message, means for receiving a text call voice message from the calling terminal through a call path formed with the calling terminal in response to the text call guidance message, and storing the received text call voice message. Means for converting the received text call voice message into a text message and means for sending a text message transmission request generated based on the converted text message to the short message service center, wherein the short message service center includes; Calls corresponding to the SCS server to the called terminal in response to a text message transmission request The SCS server may be configured to transmit a text message corresponding to the text call voice message to which call back URL information is attached.

Next, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a diagram schematically illustrating a system for converting and transmitting a voice message into a text message according to a preferred embodiment of the present invention.

Referring to FIG. 1, a system for converting a voice message into a text message includes at least one originating terminal 101, a mobile switching center (MSC) 103, and a special call service (SCS) server 105. It may include a short message service center (SMSC) 107, at least one destination terminal 109.

Here, the calling terminal 101 may form a call channel with the SCS server 105 through the mobile communication network when the calling terminal user wants to convert the voice message into a text message to the called terminal. In addition, the calling terminal user may select a STT service through a service integration screen collected by a wireless Internet access using a number URL (Uniform resource locator) or a function code corresponding to a STT (Sound To Text) service in advance.

On the other hand, the SCS server 105 may recognize and store the voice message transmitted from the originating terminal 101 through a communication path formed with the originating terminal 101 through a mobile communication network. In addition, the SCS server 105 may convert the transmitted voice message into a text message and transmit the text message to the called terminal 109 in association with the short message service center 107.

Referring to the above configuration, a method of converting and transmitting a voice message to a text message according to a preferred embodiment of the present invention will be described schematically.

When the calling terminal user converts a voice message into a text message and transmits the text message, the function terminal and the called terminal number may be input through the calling terminal 101. Meanwhile, the calling terminal user may select a STT (Sound To Text) service item (eg, a "text call" item) included in the service integration screen collected by the calling terminal in conjunction with the SCS server. Accordingly, the calling terminal 101 may form a call path with the SCS server 105 corresponding to the STT service function code through the mobile communication network.

Thereafter, the SCS server 105 may collect a voice message through a communication path formed with the calling terminal 101. Thereafter, the SCS server 105 may convert the collected voice message into a text message. Thereafter, the SCS server 105 may transmit a text message transmission request corresponding to the converted text message to the short message service center 107. Accordingly, the short message service center 107 may transmit a text message to the called terminal. Thereafter, the called terminal 109 may output the transmitted text message through the display unit.

Here, the text message may include call back URL information. Accordingly, when the called terminal user receiving the text message wants to check the original voice message, call back selection information may be input through the called terminal. Thereafter, the called terminal 109 may receive a voice message in cooperation with the SCS server 105 through a mobile communication network. Thereafter, the called terminal 109 may output the transmitted voice message through the receiver.

2 is a flowchart schematically illustrating a method of converting a voice message into a text message and transmitting the same according to an exemplary embodiment of the present invention.

Referring to FIG. 2, the calling terminal may transmit the STT service request signal generated based on the STT service function code information and the called terminal information to the mobile communication switch (step 201). Accordingly, the mobile communication exchange may transmit the transmitted STT service request signal to the SCS server (step 203).

Thereafter, the SCS server may collect a voice message from the calling terminal in response to the transmitted STT service request signal (step 205). The SCS server can then convert the collected voice message into a text message (step 207). The SCS server may then send a text message transmission request corresponding to the converted text message to the short message service center (step 209).

Thereafter, the short message service center may transmit a text message to the called terminal in response to the transmitted text message request (step 211). Accordingly, the called terminal may output the transmitted text message through the display unit (step 213).

3 is a diagram schematically illustrating a system configuration of an SCS server according to a preferred embodiment of the present invention.

Referring to FIG. 3, an SCS server according to a preferred embodiment of the present invention may include a memory system 350, at least one central processing unit (CPU) 360 connected thereto to perform high speed operation. It may include an input device 370 and a communication device 380.

The central processing unit 360 includes an Arithmetic Logic Unit (ALU) 362 for performing calculations, a register 364 for temporary storage of data and instructions, and a controller 366 for controlling the operation of the STT server. . The central processing unit 360 includes Digital, Alpha, MIPS Technologies, MIPS, such as NEC, IDT, Siemens, Intel and Cyrix, AMD, and Nexgen. It could be a processor with a variety of architectures, such as the company's x86 and IBM's and Powerola's PowerPC. The memory system 350 generally includes a high speed main memory 352, which is a type of storage medium such as random access memory (RAM) and read only memory (ROM), and a floppy disk, hard disk, tape, CD-ROM, flash memory, or the like. A secondary memory 354 in the form of a long-term storage medium and a device for storing data using electrical, magnetic, optical or other storage media. In addition, the main memory 352 may include a video display memory for displaying an image through the display device.

In addition, the input device 370 may include a keyboard, a mouse, for example, a physical transducer such as a touch screen or a microphone. The communication device 380 may be an apparatus for the STT server to communicate with at least one mobile terminal in accordance with a preferred embodiment of the present invention.

4 is a diagram schematically showing a module configuration of an SCS server according to a preferred embodiment of the present invention.

4, a transmission / reception processing module 462 for processing wireless communication with at least one mobile terminal by an SCS server according to a preferred embodiment of the present invention, for receiving and storing voice information from at least one calling terminal. It may include a voice storage module 464 and a text conversion module 466 for converting the received voice information into a text message.

Looking at the overall configuration of the SCS server according to a preferred embodiment of the present invention through such an application module as follows.

The SCS server can use various operating systems (OS) as the OS of the system. The OS provides a high level command to an application program interface (402) to control the operation of each application module 460.

The SCS server includes a high level instruction processing unit 404 that identifies each corresponding application module 460 according to the high level instructions provided from the API 402, decodes the high level instructions, and provides them to the corresponding places. The application module controller 450 controls the operation of the application module 460 according to the command provided from the high level command processor 404. That is, the high level instruction processing unit 404 identifies whether there is an application module 460 corresponding thereto according to the high level instruction provided through the API 402, and corresponds to the case where the corresponding application module 460 exists. The decoded command is recognized by the application module 460 and transmitted to the corresponding mapping unit. Accordingly, the application module controller 450 may include mapping units 451, 453, and 455 and interface units 452, 454, and 456 for the transmission / reception processing module 462, the voice storage module 464, and the character conversion module 466. Each includes.

The transmit / receive processing module mapping unit 451 receives a high level command from the high level command processing unit 404 to receive a high level command for wireless communication with at least one mobile terminal by the SCS server according to an exemplary embodiment of the present invention. It maps to a device level that can be processed in 462, and provides it to the transmit / receive processing module 462 through the transmit / receive processing module interface unit 452.

The voice storage module mapping unit 453 and the voice storage module interface unit 454 are parts for receiving and storing voice information from at least one calling terminal. That is, the voice storage module mapping unit 453 receives a high level command for using the voice storage module 464 from the high level command processing unit 404 and maps it to a device level command. Through 454 to the voice storage module 464.

The text conversion module 466 is a part for converting voice information received from the calling terminal into a text message. The character conversion module mapping unit 455 receives the high level command applied through the high level command processing unit 404 and maps the device level command to be recognized by the character conversion module 466. The device level command is provided to the character conversion module 466 through the character conversion module interface 456.

5 is a signal flow diagram schematically illustrating a process of providing an STT service through a wireless Internet access using a number URL according to a preferred embodiment of the present invention.

Referring to FIG. 5, when a calling terminal user converts a voice message into a text message and transmits it to a called terminal, the calling terminal may transmit a WINK connection to the SCS server (step 501). Here, the wink (WINK, WICK) connection is to search the Internet site by inputting a number corresponding thereto instead of the English spelling of the mobile terminal keyboard. For example, if you find the website of the Ministry of Information and Communication, if you enter '642' instead of 'MIC' which is the English initial of the Ministry of Information and Communication, 27 sites will appear including the Ministry of Information and Communication. That is, the calling terminal can access the wireless Internet using the number Uniform Resource Locator (URL). For example, when a calling terminal user enters a called number through the calling terminal and selects a wireless Internet access key (for example, "Magicen key"), the calling terminal may set WINK based on the called number and wireless Internet access selection information. You can create a connection and send it to an SCS server.

Accordingly, the SCS server may transmit service integration screen information to the calling terminal (step 503). The service integration screen information may include feature code information corresponding to each service item included in the service integration screen. Here, the feature code is a code number for routing to a specific service server, for example, * 79 or * 01.

Thereafter, when the calling terminal user selects an STT service (eg, a “text call” item) included in the service integration screen, the calling terminal may transmit text call selection information to an SCS server (step 505). . Thereafter, the connection between the SCS server and the originating terminal is terminated (step 507).

The originating terminal may then send a call establishment request to the exchange (step 509). Here, the call establishment request may be generated based on a function code corresponding to the STT service. Accordingly, the exchange may transmit a call connection request to the SCS server corresponding to the STT service function code information (step 511). Accordingly, the SCS server may send a call connection response to the exchange (step 513). The exchange may then send a call establishment response to the originating terminal (step 515).

Thereafter, the SCS server may transmit a text call guide message to the calling terminal through a call path between the calling terminal and the SCS server formed by the call setup process (steps 509 to 515) (step 517). Accordingly, the calling terminal may transmit a text call voice message to the SCS server through the call path (step 519). Accordingly, the SCS server may store the transmitted text call voice message (step 521). The SCS server may then send a call release to the exchange (step 523). Accordingly, the exchange may send a call release to the originating terminal (step 525).

Thereafter, the SCS server may convert the transmitted text call voice message into a text message (step 527). Thereafter, the SCS server may transmit a text message transmission request corresponding to the converted text message to the short message service center (step 529). Thereafter, the short message service center may transmit a text message to the called terminal (step 531).

6 is a signal flow diagram schematically illustrating a process of providing an STT service when a function code is directly input according to an exemplary embodiment of the present invention.

Referring to FIG. 6, when a calling terminal user who knows the STT service function code wants to convert a voice message into a text message and transmits the text message to the called terminal, the calling terminal user has a sound to text (STT) service function code ( After entering the feature code) and the called terminal number, the call button may be selected (step 601). Accordingly, the calling terminal may transmit the STT service function code and the called terminal number to the exchange (step 603).

Accordingly, the exchange may send a feature request signal (FR) to the home location register (step 605). Here, the feature request signal is a signal for requesting routing address information corresponding to a function code. The home location register may transmit routing address information corresponding to the STT service function code, that is, routing address information of the SCS server, in the feature response signal fr (step 607). The exchange may then send a call connection request to the SCS server (step 609). Accordingly, the SCS server may send a call connection response to the exchange (step 611).

Accordingly, a call path, that is, a voice channel, may be formed between the calling terminal and the SCS server (step 613). In this case, the SCS server may transmit a text call guide message to the calling terminal through the call path. Thereafter, the calling terminal may transmit a text call voice message to the SCS server through the call path. Accordingly, the SCS server may store the transmitted text call voice message (step 615).

Thereafter, the SCS server may convert the transmitted text call voice message into a text message (step 617). Thereafter, the SCS server may transmit a text message transmission request corresponding to the converted text message to the short message service center (step 619). The short message service center may then send a text message to the called terminal (step 521).

7 is a diagram schematically showing a text message screen output through a called terminal according to a preferred embodiment of the present invention.

Referring to FIG. 7, when the called terminal receives a text message from the short message service center, the called terminal may output the text message screen 701 through the display unit. Here, the text message screen 701 may include a text message (eg, "30 minutes late") corresponding to the text call voice message transmitted from the calling terminal to the SCS server through the call path. Further, when the called terminal user wants to hear the text call voice message directly, for example, a call key may be selected through the called terminal. In this case, the called terminal may access the SCS server by using a call back URL attached to the transmitted text message.

8 is a diagram schematically illustrating a signal flow when a called terminal user who checks a text message selects a callback according to a preferred embodiment of the present invention.

Referring to FIG. 8, the SCS server may convert the text call voice message transmitted from the calling terminal into a text message (step 527). Thereafter, the SCS server may transmit a text message transmission request corresponding to the converted text message to the short message service center (step 529). Thereafter, the short message service center may transmit a text message to the called terminal (step 531). In this case, the text message may include call back URL information corresponding to the SCS server.

Accordingly, the called terminal may output the transmitted text message through the display unit. At this time, the called terminal user can select a callback by pressing a callback selection key (eg, a "call key") through the called terminal (step 801).

Accordingly, the called terminal may transmit a callback connection request to the exchange (step 803). Accordingly, the exchange may send a call connection request to the SCS server (step 805). Accordingly, the SCS server may send a call connection response to the exchange (step 807).

Thereafter, the SCS server may extract the text call voice message transmitted and stored from the calling terminal through a call path corresponding to the text message transmitted to the called terminal (step 809). Thereafter, the SCS server may transmit the extracted voice message to the called terminal through the mobile communication network (step 811).

The present invention is not limited to the above embodiments, and many variations are possible by those skilled in the art within the spirit of the present invention.

According to the present invention, it is possible to provide a method and apparatus for converting a voice message into a text message for quickly and conveniently transmitting a text message through a STT server.

In addition, according to the present invention, if the contents of the text message are unclear, a method and an apparatus for converting a voice message into which the called terminal user can check the voice message through a call back function may be provided.

Claims (6)

A method of converting a voice message into a text message in a special call service (SCS) server coupled with at least one mobile terminal, an exchange, a home location register, and a short message service center through a mobile communication network, Receiving a call connection request from the exchange, wherein the call connection request is the STT function collected by the exchange in association with the home location register after receiving a sound to text (STT) function code and a called number from an originating terminal; Generated based on SCS server information corresponding to the code; In response to the call connection request, sending a call connection response to the exchange; Transmitting a text call guide message to the calling terminal through a call path formed with the calling terminal by the call connection response; In response to the text call guide message, receiving a text call voice message from the calling terminal through a call path formed with the calling terminal; Storing the received text call voice message; Converting the received text call voice message into a text message; And Transmitting a text message transmission request generated based on the converted text message to the short message service center; Including but not limited to: The short message service center transmits a text message corresponding to the text call voice message to which the call back URL corresponding to the SCS server is attached to the called terminal in response to the text message transmission request. How to convert a voice message into a text message and send it. The method of claim 1, Receiving a callback access request from the called terminal through a mobile communication network, wherein the callback access request is generated based on call back URL information attached to a text message received by the called terminal; In response to the callback connection request, extracting a text call voice message corresponding to the text message transmitted to the called terminal; And Transmitting the extracted text call voice message to the called terminal; And converting the voice message into a text message, wherein the voice message is further transmitted. A method of converting a voice message into a text message in a special call service (SCS) server coupled with at least one mobile terminal, a switch, and a short message service center through a mobile communication network, Receiving a wireless Internet access request using a number URL (Uniform resource locator) from an originating terminal, wherein the wireless Internet access request includes called party number information; In response to the wireless internet access request, transmitting service integration screen information to the calling terminal, wherein the service integration screen information includes function code information corresponding to a service item included in a service integration screen; Receiving text call selection information from the calling terminal; Receiving a call connection request from the exchange, wherein the call connection request is generated in response to a call establishment request received by the exchange from an originating terminal; In response to the call connection request, sending a call connection response to the exchange; Transmitting a text call guide message to the calling terminal through a call path formed with the calling terminal by the call connection response; In response to the text call guide message, receiving a text call voice message from the calling terminal through a call path formed with the calling terminal; Storing the received text call voice message; Converting the received text call voice message into a text message; And Transmitting a text message transmission request generated based on the converted text message to the short message service center; Including but not limited to: The short message service center transmits a text message corresponding to the text call voice message to which the call back URL corresponding to the SCS server is attached to the called terminal in response to the text message transmission request. How to convert a voice message into a text message and send it. The method of claim 3, Receiving a callback access request from the called terminal through a mobile communication network, wherein the callback access request is generated based on call back URL information attached to a text message received by the called terminal; In response to the callback connection request, extracting a text call voice message corresponding to the text message transmitted to the called terminal; And Transmitting the extracted text call voice message to the called terminal; And converting the voice message into a text message, wherein the voice message is further transmitted. In the SCS (Special Call Service) server coupled to the at least one mobile terminal, switch, home location register and short message service center through a mobile communication network to convert the voice message into a text message, Means for receiving a call connection request from the exchange, wherein the call connection request is the STT function collected by the exchange in association with the home location register after receiving a sound to text (STT) function code and a called number from an originating terminal; Generated based on SCS server information corresponding to the code; Means for sending a call connection response to the exchange in response to the call connection request; Means for transmitting a text call announcement message to the calling terminal through a call path formed with the calling terminal by the call connection response; Means for receiving a text call voice message from the calling terminal through a call path formed with the calling terminal in response to the text call guide message; Means for storing the received text call voice message; Means for converting the received text call voice message into a text message; And Means for transmitting a text message transmission request generated based on the converted text message to the short message service center; Including, The short message service center transmits a text message corresponding to the text call voice message to which the call back URL corresponding to the SCS server is attached to the called terminal in response to the text message transmission request. SCS Server. In the SCS (Special Call Service) server coupled with at least one mobile terminal, switchboard and short message service center through a mobile communication network and converts the voice message into a text message, Means for receiving a wireless internet access request using a number URL (Uniform resource locator) from an originating terminal, where the wireless internet access request includes called party number information; Means for transmitting service integration screen information to the calling terminal in response to the wireless internet access request, wherein the service integration screen information includes function code information corresponding to a service item included in a service integration screen; Means for receiving text call selection information from the calling terminal; Means for receiving a call connection request from the exchange, wherein the call connection request is generated in response to a call establishment request received by the exchange from an originating terminal; Means for sending a call connection response to the exchange in response to the call connection request; Means for transmitting a text call announcement message to the calling terminal through a call path formed with the calling terminal by the call connection response; Means for receiving a text call voice message from the calling terminal through a call path formed with the calling terminal in response to the text call guide message; Means for storing the received text call voice message; Means for converting the received text call voice message into a text message; And Means for transmitting a text message transmission request generated based on the converted text message to the short message service center; Including, The short message service center transmits a text message corresponding to the text call voice message to which the call back URL corresponding to the SCS server is attached to the called terminal in response to the text message transmission request. SCS Server.

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