KR100786788B1 - System and method for communicating at once voice and data between voip and a mobile telephone user - Google Patents

Abstract

A system for simultaneously delivering voice and data through one physical transmission path between Internet phone and portable phone users and a method are provided to simultaneously deliver voice and data in real time from one call through one physical transmission path between an Internet phone and a portable phone, thus a user can receive explanation on a product as characters or pictures. An agent's terminal sends a call to a customer through a VoIP(Voice over Internet Protocol) network(S100). An MSMG(Multi Service Mobile Gateway) receives the sent call, and transmits the call to an MSC(Mobile Switching Center)(S110). A signaling process is conducted between the MSMG and the customer's portable phone through an ISUP(ISDN User Part)(S120). The MSMG inquires of the MSC whether a receiving terminal supports a CMS(Cash Management Service), and receives a response(S130). If so, voice and data channels are set between the agent's terminal and the MSMG(S140). When the agent's terminal and the customer's phone are connected, voice and data communication is available(S150). Meanwhile, if the receiving terminal does not support the CMS, only voice channel is set up between the MSMG and the agent's terminal(S160). When the agent's terminal and the customer's phone are connected, only voice communication is available(S170).

Description

SYSTEM AND METHOD FOR COMMUNICATING AT ONCE VOICE AND DATA BETWEEN VoIP AND A MOBILE TELEPHONE USER}

1 is a diagram illustrating voice and data transmission in a typical VoIP network

2 is a diagram illustrating voice and data transmission using CMS technology in a mobile phone

3 is a diagram illustrating a case in which data is not delivered when a CMS mobile phone and an IP phone are connected through a VoIP gateway.

4 is a diagram illustrating a case in which voice and data are transmitted through a separate network when a general telephone and an IP phone are connected through a VoIP gateway.

5 is a diagram illustrating a case in which voice and data are transmitted through separate networks but not simultaneously at the time of connecting a CMS mobile phone and an IP phone through a VoIP gateway.

6 is a configuration diagram of a system for simultaneously delivering voice and data between a VoIP and a mobile phone user according to an exemplary embodiment of the present invention through a single physical transmission path. Drawing showing connection of telephone

FIG. 7 is a configuration diagram of a system for simultaneously delivering voice and data between a VoIP and a mobile phone user according to an exemplary embodiment of the present invention through a single physical transmission path. Diagram showing connection of terminal

8 is a configuration diagram of the MSMG shown in FIGS. 6 and 7;

FIG. 9 is a system flow diagram illustrating a call setup process between an IP phone of an agent and a CMS mobile phone of a customer when an IP phone is made by a call center agent.

10 is a system flow diagram illustrating a call setup process between an agent's ip phone and a customer's CMS-free mobile phone when an IP call is made by a call center agent.

11 is a system flow diagram illustrating a call setup process between an IP phone of a call center agent and a customer's CMS mobile phone when a customer's mobile phone is sent.

12 is a system flow diagram illustrating a call setup process between an IP phone of a call center agent and a mobile phone not supported by a CMS when a customer sends a mobile phone.

13 is a flowchart illustrating a call setup process between mobile phones of customers after an IP call is made by a call center agent;

14 is a flowchart illustrating a call setup process between an IP phone of an agent after a customer's mobile phone is sent;

***** Explanation of the main symbols in the drawings *****

10: CMS terminal 20: Mobile communication switch (MSC)

30: ip terminal or agent terminal 40: VoIP terminal

100: MSMG (Multi Service Mobile Gateway)

110: E1 matching unit 120: voice / data extraction unit

130: voice codec 140: RTP processing unit

150: data processing unit 160: VoIP signal processing unit

The present invention relates to a system and method for simultaneously delivering voice and data between a voice over internet protocol (VoIP) and a mobile phone user through a single physical transmission path, and in particular, between a VoIP and a mobile phone. The present invention relates to a system and a method for simultaneously delivering voice and data in real time.

Traditional VoIP allows voice and data to be delivered simultaneously on a single call. And between mobile phones, using CMS (Cash Management Service) technology, it was possible to deliver voice and data in one call at the same time. But there was no way to deliver voice and data at the same time between VoIP and cellular phones. The data information disappeared through the gateway connecting the two systems.

1 shows that voice and data are transmitted in a telephone call using VoIP. VoIP has separate signaling channel and bearer (media) channel in both H.323 and SIP. The call setup process negotiates which bearer channel to use. In this process, channels for audio and video data are set as necessary.

2 shows that voice and data are transmitted between mobile phones using CMS technology. In the past, only a single voice (voice only) frame was generated from a mobile phone, but a single voice (voice only) or voice + data (data) or data (data) frame can be created in a terminal using CMS technology. have. Thus, voice and data can be delivered simultaneously in one call.

FIG. 3 shows that data cannot be transmitted when a VoIP phone is connected to a CMS phone using an existing VoIP gateway. Voice / data can be transmitted to VoIP and VoIP, but data information disappears at the point where the gateway is connected to the wireless network. When the gateway and the wireless network (MSC) are connected in a circuit (circuit), the voice is transmitted between the two in a pulse code modulation (PCM) method. In this way there is no room for data transfer.

4 shows a method for transferring data between an Internet phone (VoIP) and a regular phone using an existing VoIP gateway. Since there is no method of transmitting data between the gateway and the telephone network as in the example of FIG. 3, the data is sent to the PC connected to the telephone through a separate data network.

5 is a diagram illustrating the method of FIG. 4 applied to a mobile phone. This will allow voice and data to be sent between VoIP and mobile phones. However, in order to simultaneously use the circuit network and the wireless Internet network, SVD (Simultaneous Voice and Data) must be applied to the terminal and the wireless system. Even so, the synchronization between voice and data cannot be achieved because the physical transmission path is different. .

Accordingly, the present invention has been made to solve the above problems, and an object of the present invention is to transmit voice and data simultaneously in one call through one physical transmission path between an Internet phone (VoIP) and a mobile phone. A system and method are provided.

In order to achieve the above object, the present invention provides a method for simultaneously delivering voice and data between an internet phone and a mobile phone user through a single physical transmission path. Receiving at a MSMG (Multi Service Mobile Gateway) that simultaneously delivers voice and data in real time through a single call between mobile phones; (b) attempting to establish a call by sending a call received from the calling terminal from the calling terminal to a mobile communication exchange (MSC) and receiving a response by querying a service profile of the called terminal; (c) selectively setting up a voice and data channel or a voice channel between the MSMG and the calling terminal according to the response signal received from the MSC; And (d) communicating with a call between the called terminal and the calling terminal through a voice and data channel or a voice channel selected in step (c).

The call signal transmitted from the Internet phone or the mobile phone preferably includes an SDP (Service Discovery Protocol) including audio and data.

If there is no data in the SDP, there is no need to query the service profile of the called terminal in step (b).

In addition, the method for simultaneously delivering voice and data between the Internet phone and the mobile phone user of the present invention to achieve the above object through a single physical transmission path, (a) attempting a call from the mobile phone to the destination terminal; step; (b) routing a call originating from the cellular phone to a multi-service mobile gateway (MSMG) that simultaneously delivers voice and data in real time through a single call between an Internet phone and a cellular phone in a mobile communication exchange (MSC); ; (c) when the MSMG receives a call from the MSC, queries the service profile of the calling terminal to the MSC and receives a response; (d) selectively setting up a voice and data channel or a voice channel between the MSMG and the mobile phone according to a response signal received from the MSC; And (e) communicating through a voice and data channel or a voice channel selected in step (d) by connecting a call between the cellular phone and the called terminal.

The call signal transmitted from the cellular phone preferably includes an SDP (Service Discovery Protocol) including audio and data.

If there is no data in the SDP, there is no need to query the service profile of the calling terminal in step (c).

In addition, the system for simultaneously delivering voice and data between the Internet phone and the mobile phone user of the present invention to achieve the above object through a single physical transmission path, mobile communication switch (MSC) and Internet phone (VoIP) network And a Multi Service Mobile Gateway (MSMG) for simultaneously transmitting voice and data in real time through a single call between the Internet phone and the mobile phone, wherein the MSMG comprises: the MSC; And an E1 matching unit connected to E1 and matching data received through the E1; A voice / data extraction unit which receives data from the E1 matching unit and extracts a voice signal and a data signal; A voice codec for receiving a voice signal from the voice / data extractor and converting the voice signal into a VoIP codec; An RTP processing unit for receiving a voice signal converted from the voice codec into a VoIP codec and making it as a routing table protocol (RTP); A data processor for transmitting the data signal separated by the voice / data extractor to the Internet telephone (VoIP); And a VoIP signal processor that determines a channel for transmitting the data signal from the data processor and is responsible for call processing.

The call signal transmitted from the Internet phone or the mobile phone preferably includes an SDP (Service Discovery Protocol) including audio and data.

Inquiry of the service profile of the originating or terminating terminal to the MSC according to the presence or absence of data in the SDP, and selectively setting up a voice and data channel or a voice channel according to the inquired response to perform voice and data communication. Or only voice communication.

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

FIG. 6 is a configuration diagram of a system for simultaneously delivering voice and data between a VoIP and a mobile phone user according to an exemplary embodiment of the present invention through a single physical transmission path. Referring to FIG. This is a diagram showing the connection between the CMS mobile phone and the IP phone through the.

FIG. 7 is a configuration diagram of a system for simultaneously delivering voice and data between a VoIP and a mobile phone user according to an embodiment of the present invention through a single physical transmission path. FIG. 3 is a diagram illustrating a connection between a CMS mobile phone 10 and a VoIP terminal 40 (a separate type of a general telephone terminal connected through a VoIP GW and a terminal (PC) for data communication).

6 and 7, the MSMG 100 is connected between the mobile communication switch (MSC) 20 and the VoIP network, and in real time through a single call between the Internet phone (VoIP) and the mobile phone, Allows data to be delivered at the same time. At this time, the configuration of the MSMG 100 is as shown in FIG.

As shown in FIG. 8, the MSMG 100 includes an E1 matching unit 110, a voice / data extraction unit 120, a voice codec 130, a routing table protocol (RTP) processing unit 140, and a data processing unit 150. ), And the VoIP signal processor 160.

The E1 matching unit 110 serves to match data received by E1. The MSMG 100 is connected to the Mobile Switching Center (MSC) 20 of the wireless network by E1. In this case, the data coming into E1 is not normal PCM (Pulse Code Modulation) data but raw data that is vocoder bypassed. The MSMG 100 and the MSC 20 determine whether to use a vocoder bypass mode or a transcoding (PCM) mode through ISUP (ISDN User Part) communication.

The voice / data extractor 120 receives a vocoder bypassed frame from the E1 matcher 110. This frame consists of a voice frame or a data frame or a voice / data frame. Here we multiplex / demultiplex voice and data in a frame.

The voice codec 130 receives a voice separated from the voice / data extractor 120. This voice consists of a codec such as Enhanced Variable Rate Codec (EVRC) used in wireless networks. In the VoIP network, g723.1 or g.729 is used, so EVRC is converted to g.xxx and vice versa.

The RTP processing unit 140 plays a role of transmitting a voice converted into a VoIP codec by using a routing table protocol (RTP). Or vice versa, extracting the speech portion from the received RTP packet and passing it to the speech codec.

The data processor 150 sends data separated by the voice / data extractor 120 to an Internet telephone (VoIP). The channel for sending data is determined by the VoIP signal processor 160. Send data through the determined channel.

The VoIP signal processor 160 is responsible for H.323 or SIP (session initiation protocol) call processing.

The MSMG 100 should check whether each terminal supports data in the process of signaling toward a VoIP and a mobile phone. In the case of SIP call processing in the VoIP call processing, the state of the UE can be known through SDP (Service Discovery Protocol) offer / answer, and in the case of H.323 method, through the capability negotiation. . In order to check whether the mobile phone supports the CMS, it is necessary to ask the home location register (HLR) whether the subscriber subscribes to the service separately from the ISUP call processing process.

FIG. 9 is a system flowchart illustrating a call setup process between an IP phone of an agent and a CMS mobile phone of a customer when an IP phone is made by a call center agent. Here, a case where the customer's mobile phone is a terminal supporting CMS is described as an example.

(1) When the ip terminal 30 makes a call, an outgoing signal INVITE is transmitted to the MSMG 100. At this time, the SDP (Service Discovery Protocol) is sent to the INVITE message, and the media information used by the ip terminal 30 is included therein. For example, if the ip terminal 30 supports two types of audio and data, the SDP includes' audio (m = audio ......) and data (m = data ....). ..) '. In this case, a description of how an outgoing signal (INVITE) is transmitted from the Session Initiation Protocol (SIP) network to the MSMG 100 is omitted since it is a known technique.

(2) The MSMG 100 receiving the outgoing signal INVITE should check whether the called terminal supports data transmission. Therefore, the mobile communication exchange (MSC) 20 queries the service profile of the called terminal.

(3) By this, the MSC 20 informs that the terminal is a CMS subscriber. If there is no data (m = data) in the SDP of the outgoing signal (INVITE), no procedure for querying the service profile of the called terminal is necessary.

(4) The MSMG 100 sends an IAM (Initial Address Message) signal to the MSC 20, indicating that it is in vocoder bypass mode.

(5) to (6) The MSMG 100 sends a message 200 OK to the ip terminal 30 when an Answer Message (ANM) is received from the MSC 20. At this time, the SDP includes audio (m = audio) and data (m = data), indicating that data can be supported.

(7) Upon receiving the message 200 OK from the MSMG 100, the ip terminal 30 may immediately transmit an ACK signal to the MSMG 100 and use a bearer channel of voice and data thereafter. .

FIG. 10 is a system flowchart illustrating a call setup process between an IP phone of an agent and a mobile phone not supporting a CMS of a customer when an IP call is made by a call center agent. Here, a case where the customer's cellular phone is a terminal which does not support CMS will be described as an example.

(1) When the ip terminal 30 makes a call, an outgoing signal INVITE is transmitted to the MSMG 100. At this time, the SDP (Service Discovery Protocol) is sent to the INVITE message, and the media information used by the ip terminal 30 is included therein. For example, if the ip terminal 30 supports two types of audio and data, the SDP includes' audio (m = audio ......) and data (m = data ....). ..) '. In this case, a description of how an outgoing signal (INVITE) is transmitted from the Session Initiation Protocol (SIP) network to the MSMG 100 is omitted since it is a known technique.

(2) The MSMG 100 receiving the outgoing signal INVITE should check whether the called terminal supports data transmission. Therefore, the mobile communication exchange (MSC) 20 queries the service profile of the called terminal.

(3) By this, the MSC 20 informs that the terminal is not a CMS subscriber. If there is no data (m = data) in the SDP of the outgoing signal (INVITE), no procedure for querying the service profile of the called terminal is necessary.

(4) The MSMG 100 sends an IAM signal to the MSC 20 to indicate that it is in vocoder bypass mode.

(5) to (6) The MSMG 100 sends a message 200 OK to the ip terminal 30 when an Answer Message (ANM) is received from the MSC 20. At this time, the SDP includes only audio (m = audio), indicating that data can be supported.

(7) When the ip terminal 30 receives the message 200 OK from the MSMG 100, the ip terminal 30 may immediately transmit an ACK signal to the MSMG 100 and use only the bearer channel of the voice thereafter.

FIG. 11 is a system flow diagram illustrating a call setup process between an IP phone of a call center agent and a customer's CMS mobile phone when the customer's mobile phone is sent.

(1) When the customer makes a call from the CMS-supporting mobile phone, an IAM signal is transmitted to the MSMG 100.

(2) to (3) When the IMG signal is received, the MSMG 100 checks whether the calling terminal supports data transmission. Accordingly, the MSC 20 queries the service profile of the calling terminal toward the MSC 20, and the MSC 20 informs that the calling terminal is a CMS subscriber.

(4) The MSMG 100 sends an SDP to an INVITE message to the ip terminal 30, which contains media information to be used by the MSMG 100. If a cell phone supports both audio and data, the SDP includes 'audio (m = audio ......) and data (m = data ......)'.

(5) When the ip terminal 30 receives an INVITE message from the MSMG 100, the ip terminal 30 sends a message 200 OK to the MSMG 100. In this case, the message 200 OK includes audio (m = audio ......) and data (m = data ......). In this case, it is assumed that the ip terminal 30 supports data.

(6) to (7) When the MSMG 100 receives the message 200 OK from the ip terminal 30, the MSMG 100 transmits an Answer Message (ANM) to the MSC 20 and the ip terminal 30 Transmits an ACK signal. After that, the bearer channel of voice and data can be used. Here, the answer message (ANM) indicates that it is in vocoder bypass mode.

FIG. 12 is a system flowchart illustrating a call setup process between an IP phone of a call center agent and a mobile phone not supporting a CMS when a customer sends a mobile phone.

(1) When the customer makes a call from the CMS-supporting mobile phone, an IAM signal is transmitted to the MSMG 100.

(2) to (3) When the IMG signal is received, the MSMG 100 checks whether the calling terminal supports data transmission. Therefore, the service profile of the calling terminal is queried to the MSC 20, and the MSC 20 informs that the calling terminal is not a CMS subscriber.

(4) The MSMG 100 sends an SDP to an INVITE message to the ip terminal 30, which contains media information to be used by the MSMG 100. SDP includes audio (m = audio ......) because the phone only supports audio.

(5) When the ip terminal 30 receives an INVITE message from the MSMG 100, the ip terminal 30 sends a message 200 OK to the MSMG 100. In this case, the message 200 OK includes audio (m = audio ......).

(6) to (7) When the MSMG 100 receives the message 200 OK from the ip terminal 30, the MSMG 100 transmits an Answer Message (ANM) to the MSC 20 and the ip terminal 30 Transmits an ACK signal. After that, the bearer channel of voice and data can be used. Here, the answer message (ANM) indicates that it is in vocoder bypass mode.

As described above, the bearer channel setup is completed along with the call setup, and the MSMG 100 performs media processing. The MSMG 100 receives a frame multiplexed with voice / data through E1. Here, the MSMG 100 separates voice and data. In the case of voice, since the codecs of the wireless network and the VoIP network are different, the MSMG 100 converts the RTP packet after transcoding. In case of data, it is transmitted to the bearer channel set with ip terminal without any conversion.

13 is a flowchart illustrating a call setup process between a mobile phone of a customer after an IP phone call of a call center agent.

Referring to Figure 13, the call from the counselor terminal (ip terminal) to the customer via the Internet (VoIP) network (step S100).

Then, the call sent from the counselor terminal is received by the MSMG 100, which simultaneously delivers voice and data in real time through a single call between the Internet phone and the mobile phone, and then to the MSC 20. Send (step S110).

Then, a signal is signaled between the MSMG 100 and the customer's mobile phone through an IDN (ISDN User Part) (step S120).

Next, the MSMG 100 queries the mobile communication switch (MSC) 20 for a service profile as to whether the destination terminal supports the CMS and receives a response (step S130).

At this time, if the called terminal supports the CMS (YES in step S130), a voice and data channel is set up between the MSMG 100 and the counselor terminal (step S140). Then, when the customer's mobile phone and the counselor terminal are connected, voice and data communication are possible (step S150).

On the other hand, in step S130, if the called terminal does not support the CMS (NO in step S130), only a voice channel is set up between the MSMG 100 and the counselor terminal (step S160). Then, when the customer's mobile phone and the counselor terminal are connected, only voice communication is possible (step S170).

In this case, as described above, the call signal transmitted from the counselor terminal includes an SDP (Service Discovery Protocol) including audio and data. In this case, if there is no data in the SDP, the procedure of querying the service profile of the called terminal may be omitted.

14 is a flowchart illustrating a call setup process between an IP phone of an agent after a mobile phone call of a customer.

Referring to FIG. 14, a call is attempted from a customer cell phone to an agent terminal (ip terminal) (step S200).

Then, the call originating from the customer cellular phone is routed from the mobile communication switch (MSC) 20 to the MSMG 100 (step S210).

Then, when the MSMG 100 receives the call from the MSC 20, the MSMG 100 sends the call to the counselor terminal through a VoIP network. Then, in the signaling process with the MSC 20 (ISUP), the originating terminal queries the service profile as to whether the CMS supports the CMS (steps S220 to S230).

At this time, if the calling terminal supports the CMS (YES in step S230), the MSMG 100 and the customer mobile phone exchange information for voice and data communication through VoIP signaling (step S240). Then, when the customer mobile phone and the counselor terminal are connected, voice and data communication are possible (step S250).

Meanwhile, in step S230, if the calling terminal does not support the CMS (NO in step S230), the MSMG 100 and the customer mobile phone exchange and receive information only for voice communication through VoIP signaling ( Step S260). Then, when the customer cell phone and the counselor terminal are connected, only voice communication is possible (step S270).

Here, the call signal transmitted from the customer mobile phone includes an SDP (Service Discovery Protocol) including audio and data, and is transmitted. In this case, if there is no data in the SDP, the procedure of querying the service profile of the calling terminal may be omitted.

Another embodiment

As another embodiment of the present invention, a method of simultaneously delivering voice / data using equipment other than the MSMG 100 is as follows.

When the SVD supporting mobile phone and the IP terminal are connected through the VoIP gateway of FIG. 5, voice and data may be transmitted through separate networks using the SVD method. However, it is difficult to match voice / data sync and is not suitable for real time communication.

The present invention is not limited to the above-described embodiments, but can be variously modified and changed by those skilled in the art, which should be regarded as included in the spirit and scope of the present invention as defined in the appended claims. something to do.

As described above, according to the system and method for simultaneously delivering voice and data between an Internet phone and a mobile phone user according to the present invention through a single physical transmission path, there is one system between an Internet phone (VoIP) and a mobile phone. Through the physical transmission path, it is possible to simultaneously transmit voice and data in one call in real time. Since voice and data are simultaneously transmitted using the circuit mode in the wireless section, the caller (VoIP or mobile phone) makes a phone call and talks to an agent in the same way as the conventional dialing method. Receive a description or text.

In addition, since the method of making and receiving calls uses the same method as before, voice and data can be simultaneously processed in a single call without using special numbers or letters.

In addition, since voice and data are processed through one physical transmission path in one call, voice and data can be synchronized.

Claims (9)

In a method for simultaneously transmitting voice and data between a telephone and a mobile phone user through a single physical transmission path, (a) receiving a call signal originating from an originating terminal in a multi service mobile gateway (MSMG) that simultaneously transmits voice and data in real time through a single call between an internet phone and a mobile phone; (b) attempting to establish a call by sending a call received from the calling terminal from the calling terminal to a mobile communication exchange (MSC) and receiving a response by querying a service profile of the called terminal; (c) selectively setting up a voice and data channel or a voice channel between the MSMG and the calling terminal according to the response signal received from the MSC; And (d) a call is connected between the called terminal and the calling terminal to communicate over a voice and data channel or a voice channel selected in step (c); Method for simultaneous delivery over one physical channel. The method of claim 1, The call signal sent from the internet phone or the mobile phone includes: Including a service discovery protocol (SDP) including audio and data for transmitting voice and data simultaneously through a single physical transmission path between the Internet phone and the mobile phone user Way. The method of claim 2, If there is no data in the SDP, in the step (b), the voice and data are simultaneously transferred between the Internet phone and the mobile phone user through one physical transmission path, characterized in that the procedure for querying the service profile of the called terminal is omitted. Way. In a method for simultaneously transmitting voice and data between a telephone and a mobile phone user through a single physical transmission path, (a) attempting a call from the cellular phone to the called terminal; (b) routing a call originating from the cellular phone to a multi-service mobile gateway (MSMG) that simultaneously delivers voice and data in real time through a single call between an Internet phone and a cellular phone in a mobile communication exchange (MSC); ; (c) when the MSMG receives a call from the MSC, queries the service profile of the calling terminal to the MSC and receives a response; (d) selectively setting up a voice and data channel or a voice channel between the MSMG and the mobile phone according to a response signal received from the MSC; And (e) connecting a call between the cellular phone and the called terminal and communicating through a voice and data channel or a voice channel selected in step (d); For simultaneously delivering data through one physical transmission path. The call signal of claim 4, wherein the call signal from the cellular phone comprises: Including a service discovery protocol (SDP) including audio and data for transmitting voice and data simultaneously through a single physical transmission path between the Internet phone and the mobile phone user Way. The method of claim 5, If there is no data in the SDP, in the step (c), the voice and data are simultaneously transferred between the Internet phone and the mobile phone user through one physical transmission path, which exempts the procedure of querying the service profile of the calling terminal. Way. A system for simultaneously delivering voice and data between an internet phone and a mobile phone user through a single physical transmission path, MSMG (Multi Service Mobile Gateway), which is connected between MSC and VoIP network, enables simultaneous delivery of voice and data through a single call between the Internet phone and mobile phone. Equipped, The MSMG is: An E1 matching unit connected to the mobile communication exchange (MSC) and E1 and matching data received through the E1; A voice / data extraction unit which receives data from the E1 matching unit and extracts a voice signal and a data signal; A voice codec for receiving a voice signal from the voice / data extractor and converting the voice signal into a VoIP codec; An RTP processing unit for receiving a voice signal converted from the voice codec into a VoIP codec and making it as a routing table protocol (RTP); A data processor for transmitting the data signal separated by the voice / data extractor to the Internet telephone (VoIP); And A system for transmitting voice and data simultaneously through a single physical transmission path between an internet phone and a mobile phone user including a VoIP signal processor that determines a channel for transmitting data signals in the data processor and handles call processing; . The method of claim 7, wherein The call signal sent from the internet phone or the mobile phone includes: Including a service discovery protocol (SDP) including audio and data for transmitting voice and data simultaneously through a single physical transmission path between the Internet phone and the mobile phone user system. The method of claim 8, Inquiry of the service profile of the originating or terminating terminal to the MSC according to the presence or absence of data in the SDP, and selectively setting up a voice and data channel or a voice channel according to the query response to perform voice and data communication. Or a system for simultaneously delivering voice and data through a single physical transmission path between an internet phone and a mobile phone user, characterized in that only voice communication is performed.

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