KR20130001918A - Voice call continuity service providing systemn and method thereof - Google Patents

Abstract

PURPOSE: A system for providing a call-continuous service and a method thereof are provided to improve a cost increase caused by media board installation by using a messaging service instead of a DTMF signal. CONSTITUTION: A terminal device(100) generates a call by using a VCC service. The terminal device stores a domain selection policy for domain switching. The terminal device performs function for selecting a domain to be used or switched. A call exchange device(200) processes a transmitting/receiving call in a CS domain. A call-continuous support device(400) receives a message including a specific receiving connection information from the terminal device. The call-continuous support device tries call transmission according to the receiving connection information to interface a call between the terminal device and a receiving terminal device(10). [Reference numerals] (100) Terminal device; (200) Call exchange device; (400) Call-continuous support device; (500) Call exchange device of an internet telephone

Description

System and method for providing call continuous service {VOICE CALL CONTINUITY SERVICE PROVIDING SYSTEMN AND METHOD THEREOF}

The present invention relates to a system and method for providing a call continuity service, and more particularly, in an environment in which a built-in call continuity support device (VCC server) exists inside a specific customer network (eg, a corporate network). In order to support DTMF by first using the messaging service instead of the existing DTMF signal, in order to use the VCC service when inputting a call to a terminal device, it is first connected to the call continuous support device and then provides the called terminal number of the called terminal device. System and method of providing call continuity service that can solve the imperfections such as the cost increase due to the installation of media board which has built-in call continuity support device, operation method of call continuity support device and call continuity support device, It relates to a terminal device.

Mobile communication systems are evolving from voice-based circuit switched (CS) domains to packet-based packet switched (PS) domains.

In addition, it is common for a mobile communication terminal to make a data connection using a packet switched (PS) and a WLAN modem and to send and receive packets. Many services appeared on the Internet through the data connection of the mobile communication terminal, and the basis for providing voice calls, which are the core services of the mobile communication, was provided through the cheap internet network. The IETF, which decides the standards related to the Internet, defined a protocol called Session Initiation Protocol (SIP) that can establish voice / video sessions based on the Internet's IP network. SIP-based call / session control protocol has been borrowed under the name of IMS (IP Multimedia Sub-system) in 3GPP, a standard for mobile communication. With the expansion of smartphones equipped with WLANs, an environment for making SIP calls as well as CS calls has been created in mobile communication terminals, and wired / wireless integration of services and phenomena for making Internet calls through WLANs in mobile communication terminals, namely It was called FMC (Fixed Mobile Convergence).

Customers can use CS Calls or FMC Calls depending on the situation, and especially for companies that are sensitive to cost savings, create an environment where FMC can be used on the premises and reduce the costs by using FMC Calls for employees. I'm struggling. In order to increase the usability of the CS call that is good in portability but expensive and the FMC call that is inexpensive but available only in limited places, a VCC (Voice Call Continuity) service has been developed that can be used without switching between the CS call and the FMC call.

The VCC service is a terminal equipped with both a 3G communication WCDMA CS (Circuit Switched) call function and a FMC (Fixed Mobile Convergence) call function for making voice calls over the Internet through a PS (Packet Switched) connection or a WLAN connection. Continuity of voice call by switching VCS between CS domain (or CS network) and IMS domain (or IMS network) so that VCC terminal can use CS call and FMC call service without interruption To ensure the service.

Accordingly, in order to perform domain switching in a VCC service, a VCC server (VCC Application Server, VCC AS) performing a domain transfer function (DTF) is located in the middle of a call path. That is, in order to use the VCC service, the VCC terminal supporting the VCC service must go through the VCC server when the first call is made.

At this time, the VCC server may be inside the mobile communication provider's network, or may be inside the corporate customer's network. In other words, the VCC server exists inside the mobile carrier's network to provide personal FMC lines and VCC services, and the VCC server is installed inside the corporate client's network for interworking with corporate FMC lines that require interworking with IP-PBX. It will exist.

In particular, when there is a VCC server in the network of the corporate client company, the flow of the VCC terminal using the VCC service will be described as follows. When the VCC terminal sends a CS to a specific called terminal, the VCC terminal first makes a call to the VCCN (VCTN-VCC CS Call Trigger Number), and when the VCC terminal is connected to the VCC server, the VCC terminal is connected to the actual called terminal device. The called party number is provided to the VCC server as DTMF (Dual Tone Multi Frequency), and the VCC server sends the call to the actual called party number according to the DTMF.

As such, when there is a VCC server in the corporate client network, the VCC terminal must provide the called number to the VCC server through DTMF when sending the CS. For this purpose, the DTMF used is Bypass, RFC2833, SIP / INFO. There are three kinds of methods.

In some cases, the VCC server may not support all of the above three DTMFs in the corporate client network, and in the case of the bypass system, the VCC server has a cost increase problem that requires additional media boards. . As such, in the future, when the VCC terminal needs to send CS when connecting to the VCC server, a method for resolving the imperfections using the DTMF is required.

The present invention has been made in view of the above circumstances, and an object of the present invention is to connect to a specific registered call continuous support device when a terminal device inputs a call to a specific called terminal device and continues the call. When the connection with the supporting device is confirmed, the receiving connection information corresponding to the called terminal device is provided by using a predefined messaging service, and when the call continuous supporting device receives the message including the incoming connection information, By providing a call continuous service and a call continuous service providing system and method for interfacing a call between the terminal device and the called terminal device when the call is connected to the called terminal device according to the call attempt attempt, The call continuity supporting device has to support the existing DTMF to receive incoming connection information of the actual receiving terminal device. This is to solve the imperfections such as the cost increase due to the media board installation.

The present invention has been made in view of the above circumstances, and another object to be achieved in the present invention includes a convoy receiving unit supporting convoy / receive through at least one of the first domain and the second domain; And a terminal for connecting to a specific registered call support device through the call receiving unit and providing incoming connection information corresponding to the called terminal device by using a predefined messaging service. Provides a terminal device including a control unit to solve the imperfections such as the cost increase due to the media board that the call continuous support device has to receive the incoming connection information of the actual terminal device by supporting the existing DTMF To provide an environment.

The present invention has been made in view of the above circumstances, and another object of the present invention is to receive a call originating from a specific terminal device and to receive a message provided from the terminal device when connected with the terminal device. Call continuity that attempts to make a call based on the specific incoming connection information according to the call continuity interface between the called terminal device and the terminal device connected according to the call origination attempt after being connected to a specific called terminal device according to the incoming connection information Provides the operation method of the supporting device and the call continuous support device, and supports the existing DTMF, thus incomplete problems such as the cost increase due to the media board installed in the call continuous support device to receive the incoming connection information of the actual receiving terminal device. To provide an environment for resolving sex.

The present invention has been made in view of the above circumstances, and another object to be reached in the present invention is to recognize a call originating input to a specific called terminal device, and when the call originating input is recognized, a specific registered call continuous support device. Attempts to make a call to the caller and if the connection with the specific call continuity support device is detected according to the call origination attempt, provides the call connection information corresponding to the called terminal device and the call connection information through a predefined messaging service. Providing a computer-readable recording medium including a command to provide a message containing a message to the specific call continuous support device, to support the existing DTMF call continuous support device to receive incoming connection information of the actual destination terminal device It is to provide an environment to solve the incompleteness such as the cost increase problem caused by the media board installation. All.

The call continuous service providing system according to the first aspect of the present invention for achieving the above object is connected to a specific registered call continuous support device when the call origination input to a specific called terminal device and corresponds to the called terminal device; Terminal device for providing the incoming connection information using a predefined messaging service; And when a message including specific incoming connection information is received from the connected terminal device, attempting to make a call according to the incoming connection information on the basis of the message, and continuously connecting a call between the terminal device and the called terminal device. It includes.

Terminal device according to a second aspect of the present invention for achieving the above object is a transport receiver for supporting the transmission / reception through at least one of the first domain and the second domain; And when the call origination is input to a specific destination terminal device based on a specific domain among the first domain and the second domain, connect to a specific registered call continuous support device and define the incoming connection information corresponding to the destination terminal device. It includes a terminal control unit to provide using the messaging service.

Preferably, when the call origination attempt to the called terminal device is input, the terminal control unit attempts to call the specific call continuous support device using a pre-registered specific device number and accordingly the call continuous support. When connected to the device, by using a predefined messaging service to generate at least one message of the SMS and MMS including the called connection information including the called terminal number according to the call origination input provided to the call continuous support device can do.

A terminal device according to a third aspect of the present invention for achieving the above object, the call input recognition unit for recognizing a call originating input to a specific destination terminal device; A call origination processing unit for attempting to originate a call to a specific registered call support device when the call origination input is recognized; And when the connection with the specific call continuity supporting device according to the call origination attempt is recognized, provides incoming connection information corresponding to the called terminal device, and transmits a message including the incoming connection information through a predefined messaging service. It includes a call connection information providing unit to provide a specific call continuous support device.

Preferably, the incoming connection information providing unit generates the incoming connection information including the called terminal number according to the recognized call origination input and the message request information including the device number of the connected specific call continuous support device, The message request information may be provided to a specific service device providing the messaging service to request transmission.

Call continuous support apparatus according to a fourth aspect of the present invention for achieving the above object, the call terminal connection unit for receiving a call origination from a specific terminal device connected to the terminal device; A message receiving unit which receives a message provided from the terminal device; A terminating terminal connection unit connected to a specific terminating terminal device according to the terminating connection information by attempting to make a call based on the specific terminating connection information according to the message; And a call interface unit for interfacing a call between the called terminal device and the terminal device connected according to the call origination attempt.

Preferably, the called terminal connection unit, when receiving at least one of the SMS and MMS message through the message receiving unit, recognizes a specific called terminal number included in the message and attempts to make a call using the called terminal number can do.

Preferably, in response to a domain switching request from at least one of the terminal apparatus and the called terminal apparatus, domain switching that has been previously anchored in response to at least one of the terminal apparatus and the receiving terminal apparatus which has requested domain switching. The apparatus may further include a domain switching unit that performs domain switching on the call based on the control information.

According to a fifth aspect of the present invention, there is provided a method for providing a call continuation service, comprising: connecting, by a terminal device, a specific registered call continuity support device when a call origination is input to a specific called terminal device; Providing, by the terminal device, incoming connection information corresponding to the called terminal device by using a predefined messaging service when the connection with the call continuous support device is confirmed; When the call continuous support device receives a message including the incoming connection information, attempting to make a call according to the incoming connection information based on the received message; And when the call continuous support device is connected to the called terminal device according to the call origination attempt, interfacing a call between the terminal device and the called terminal device.

A method of operating a call continuous support apparatus according to a sixth aspect of the present invention for achieving the above object comprises: a call terminal connecting step of receiving a call origination from a specific terminal device and connecting with the terminal device; A message receiving step of receiving a message provided from the terminal device; A terminating terminal connection step of connecting to a specific terminating terminal device according to the terminating connection information by attempting to make a call based on the specific terminating connection information according to the message; And a call interface step of interfacing a call call between the called terminal device and the terminal device connected according to the call origination attempt.

Preferably, the called terminal connection step, when receiving at least one message of the SMS and MMS through the message receiving unit, recognizes a specific called terminal number included in the message and makes a call using the called terminal number You can try

Preferably, in response to a domain switching request from at least one of the terminal apparatus and the called terminal apparatus, domain switching that has been previously anchored in response to at least one of the terminal apparatus and the receiving terminal apparatus which has requested domain switching. The method may further include a domain switching step of performing domain switching on the call based on the control information.

The computer-readable recording medium according to the seventh aspect of the present invention for achieving the above object, the step of recognizing a call originating input to a specific destination terminal device, if the call originating input is recognized, a specific registered call continuous support device Attempting to make a call to a call, and when the connection with the specific call continuous support device is recognized according to the call origination attempt, providing the call connection information corresponding to the called terminal device and receiving the call through a predefined messaging service. And providing a message including connection information to the specific call continuous support device.

Preferably, the command for executing the step of providing the incoming connection information includes the incoming connection information including the called terminal number according to the recognized call origination input and the device number of the connected specific call continuous support device. The message request information may be generated, and the message request information may be provided to a specific service device providing the messaging service to request transmission.

Accordingly, according to the call continuous service providing system and method of the present invention, a terminal device is a called terminal device in an environment in which a built-in call continuous support device (VCC server) exists in a specific customer network (for example, a corporate network). In order to use the VCC service when the call origination of the call is first connected to the call continuous support device, and then to provide the called terminal number of the called terminal device by using a messaging service instead of the existing DTMF signal, it is constructed to support DTMF. Incompleteness such as the cost increase caused by the media board installed in the call continuous support device can be solved.

1 is a block diagram showing a call continuous service providing system according to a preferred embodiment of the present invention.
2 is a block diagram illustrating a terminal device according to a preferred embodiment of the present invention.
3 is a block diagram illustrating an application-based terminal device according to an exemplary embodiment of the present invention.
4 is a block diagram of a call continuous support apparatus according to a preferred embodiment of the present invention.
5 is a flowchart illustrating a method for providing a call continuation service according to a preferred embodiment of the present invention.
6 is a flowchart illustrating a method of operating a terminal device according to an exemplary embodiment of the present invention.
7 is a flowchart illustrating a method of operating a call continuation support device according to an exemplary embodiment of the present invention.

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

1 is a diagram illustrating a call continuous service providing system according to a preferred embodiment of the present invention.

As shown in Figure 1, the call continuous service providing system according to the present invention, when a call origination input to a specific incoming terminal device 10, connected to a specific registered call continuous support device 400 and the incoming terminal device ( 10) the terminal device 100 that provides the incoming connection information corresponding to the predetermined connection using a predefined messaging service, and when a message including the specific incoming connection information is received from the connected terminal device 100, the incoming connection is based on this. Attempting to make a call according to the information, the call continuous support device 400 for interfacing the call between the terminal device 100 and the receiving terminal device 10.

Prior to the description, in order to provide a VCC service by interworking with a personal Fixed Mobile Convergence (FMC) line, a VCC server (corresponding to a call continuous support device) exists within a mobile carrier's network (for example, a 3G core network). Done. In the case of the call continuous service providing system in this case, since the VCC server can communicate with internal devices of the mobile operator network, existing problem situations to be improved in the present invention, which will be described in detail later, are developed. Will not be.

Here, the VCC (Voice Call Continuity) service is a fixed mobile convergence (FMC) call that makes voice calls through Internet connection through WCDMA's CS (Circuit Switched) Call function and PS (Packet Switched) connection or WLAN connection. Voices can be used by a terminal (VCC terminal) with simultaneous functions without interruption of CS call and FMC call services, that is, by switching a domain between a CS domain (or CS network) and an IMS domain (or IMS network). It is a service that guarantees continuity of voice calls.

Therefore, the call continuous service providing system according to the present invention is a VCC service in conjunction with the corporate FMC line that requires the interworking with the IP-PBX as shown in Figure 1, that is, the existing problem situation to be improved in the present invention occurs It is preferable to target the case where a built-in VCC server (corresponding to a call continuous support device) exists / located inside a specific customer network (e.g., enterprise network) in order to provide.

Hereinafter, with reference to Figure 1 to describe the configuration of the call continuous service providing system according to the present invention.

The terminal device 100 is preferably a VCC terminal supporting voice calls through both the first domain, that is, the CS domain and the second domain, that is, the IMS domain.

That is, the terminal device 100 is a VCC Capable UE having an active VCC subscription, and may use not only a CS call but also an FMC call (or IMS call) using wired or wireless integration, that is, an FMC line. It will be a terminal that can.

The terminal device 100 generates a call or stores a domain selection policy for switching a domain using a VCC service, and applies the call when generating a call or generating a condition that requires a domain switching during a call. Or to select a domain to switch to.

Accordingly, the terminal device 100 connects to a specific call continuous support device 400 previously registered to use the VCC service when a call origination is input to a specific call terminal device 10, and the call corresponding to the call terminal device 10 is received. Connection information can be provided using a predefined messaging service.

That is, the terminal device 100, if a specific calling condition for the call attempt is satisfied, such as a called terminal number is input by the user and a calling button is input, and the call originating input to the specific called terminal device 10 is recognized, By applying the stored domain selection policy, it is possible to select whether to use the first domain and the second domain, that is, the CS domain and the IMS domain. Here, the procedure for the terminal device 100 to select a domain is not particularly limited. That is, the procedure may be the same as selecting a domain in a conventional VCC terminal.

Accordingly, when the first domain, that is, the CS domain, is selected, the terminal device 100 performs a series of connection procedures for the call with the destination terminal device 10 using the VCC service.

Specifically, when a call origination to the called terminal device 10 is input, the terminal device 100 attempts to make a call using the device number of the call continuous support device 400 previously registered to use the VCC service.

Therefore, the call origination to the call continuous support device 400 is routed to the Internet telephone call exchange device 500 through the call exchange device 200 in the first domain, that is, the CS domain, and thus to a specific customer network 600 (eg, an enterprise network). In order to be connected to the built-in VCC server (call continuous support device 400) existing inside the first is connected to the IP-PBX (650) of the specific customer network (600). The IP-PBX 650 connects the call origination to the call continuous support device 400 to the call continuous support device 400.

Here, the call exchange apparatus 200 may include MSC, VMSC, etc. as an exchange apparatus that processes outgoing / incoming calls in the first domain, that is, the CS domain. In addition, the Internet telephone call exchange apparatus 500 may include various devices that exchange / interface a call with an external network by an internet telephone provider, which may be a component belonging to a second domain, that is, an IMS domain.

As such, when the CS call origination to the called terminal device 10 is input, the terminal device 100 first attempts to call the CS call to the call continuous support device 400 previously registered to the terminal device 100 to use the VCC service. CS call origination is connected to the call continuous support device 400 via the IP-PBX (650) of the specific customer network 600 via the call exchange device 200 and the Internet telephone call exchange device 500, such a connection The process will be the same / corresponding to the process that the existing VCC terminal attempts to call the specific VCC server first when the CS call is input to the called terminal.

Accordingly, the terminal device 100 is connected to the call continuous support device 400 through the connection procedure as described above.

As described above, the call continuous support device 400 is a built-in VCC server existing inside a specific customer network 600 to provide a VCC service by interworking with a corporate FMC line of a specific customer network 600 as described above. desirable.

The call continuous support device 400 is connected to the terminal device 100 by forming a call path in response to the ~ call origination from the terminal device 100.

When the terminal device 100 confirms the connection with the call continuous support device 400, the terminal device 100 receives the incoming connection information (eg, called terminal number) corresponding to the called terminal device 10 in a predefined messaging service (eg, SMS, MMS, etc.) is provided to the call continuous support device (400).

Accordingly, when the call continuous support device 400 receives a message including specific incoming connection information from the terminal device 100, the call continuous support apparatus 400 attempts to make a call based on incoming connection information (eg, called terminal number) based on the message. A communication path with the called terminal device 10 is formed.

In addition, the call continuous support device 400, through the call path connected between itself and the terminal device 100 and the call path connected between itself and the receiving terminal device 10, the terminal device 100 and the receiving terminal device 10 Interface call calls between users.

Accordingly, the terminal device 100 is connected to the receiving terminal device 10 and the call path through the call interface through the call continuous support device 400 is enabled to make a call with the receiving terminal device 10.

In addition, when the terminal device 100 moves during a call and moves to an area where an FMC call (or IMS call) can be made (for example, a region covered by a specific customer network 600), the terminal device 100 may provide a VCC service. Since it is a terminal to be used, it is possible to request the call continuous support device 400 to switch the domain from the current state, that is, the CS domain to the second domain, that is, the IMS domain, by applying a pre-stored domain selection policy as before. Also, as described above, the procedure for switching the call path corresponding to the terminal device 100 from the CS domain to the IMS domain will be performed.

As described above, the call continuation service system according to the present invention provides a specific customer network (eg, a corporate network) in order to provide a VCC service in connection with an environment in which existing problem situations to be improved are generated, that is, a corporate FMC circuit. In an environment where a built-in call continuity support device (VCC server) exists inside, the terminal device is first connected to the call continuity support device to use the VCC service when the call is input to the caller device, and then the called device of the caller device. In providing the number by using a messaging service instead of the existing DTMF signal, it is possible to solve the imperfections such as the cost increase due to the installation of the media board that the built-in call continuity supporting device has to support the DTMF. .

Hereinafter, the configuration of the terminal device according to the present invention will be described in more detail with reference to FIGS. 2 and 3.

First, the terminal device of the present invention will be described with reference to FIG. 2.

The terminal device 100 according to the present invention, the transport receiving unit 110 for supporting the transmission / reception through at least one of the first domain and the second domain, and the specific domain of the first domain and the second domain On the basis of the call origination input to the specific destination terminal device 10, connected to the specific call continuous support device 400 previously registered through the call reception unit 110 and the incoming connection information corresponding to the destination terminal device 10 It includes a terminal control unit 120 using the defined messaging service.

The transport receiving unit 110 supports the transport / reception through at least one of the first domain and the second domain.

That is, the transport receiving unit 110 may be a communication module supporting voice calls through a first domain, that is, a CS domain, and a second domain, that is, an IMS domain, and thus the terminal apparatus 100 may select a desired one among the CS domain and the IMS domain. It may be a VCC terminal that can select one domain and use a voice call through it.

That is, the terminal device 100 may be a terminal capable of using not only a CS call but also a wired / wireless integration, that is, an FMC call (or an IMS call) using an FMC line.

The terminal control unit 120, when a call origination is input to a specific destination terminal device 10 based on a specific domain of the first domain and the second domain, the specific call continuous support device 400 previously registered through the call reception unit 110. ) And provides the incoming connection information corresponding to the called terminal device 10 by using a predefined messaging service.

More specifically, the terminal controller 120, when a call origination to the destination terminal device 10 is input, the call to the specific call continuous support device 400 by using a specific device number registered in advance to use the VCC service At least one of the SMS and the MMS including the incoming connection information including the called terminal number according to the call origination input using a predefined messaging service when the call is attempted and connected with the call continuous support apparatus 400 accordingly. Produces a message of and provides it to the call continuous support device (400).

That is, the terminal controller 120 generates a call using the VCC service or stores a domain selection policy for domain switching, and applies it when a call is generated or a condition requiring domain switching during a call is generated. Select a domain to use or switch.

Accordingly, the terminal control unit 120, when a call originating terminal number is input by a user and a call origination button is input, such that a specific call condition for a call attempt is satisfied, and a call origination input to a specific call terminal device 10 is recognized, the stored information is stored. By applying the domain selection policy, it is possible to select which of the first domain and the second domain, namely, the CS domain and the IMS domain, is used. Here, the procedure of the terminal controller 120 to select a domain is not particularly limited. That is, the procedure may be the same as selecting a domain in a conventional VCC terminal.

Accordingly, when the first domain, that is, the CS domain, is selected, the terminal controller 120 performs a series of connection procedures for the call with the called terminal 10 using the VCC service.

That is, the terminal control unit 120, when a call origination to the destination terminal device 10 is input, the call through the CS domain selected this time using the device number of the call continuous support device 400 previously registered to use the VCC service first Attempt to make a call.

Therefore, the call origination to the call continuous support device 400 is routed to the Internet telephone call exchange device 500 through the call exchange device 200 in the first domain, that is, the CS domain, and thus to a specific customer network 600 (eg, an enterprise network). In order to be connected to the built-in VCC server (call continuous support device 400) existing inside the first is connected to the IP-PBX (650) of the specific customer network (600). The IP-PBX 650 connects the call origination to the call continuous support device 400 to the call continuous support device 400.

As such, when the CS call origination to the called terminal device 10 is input, the terminal control unit 120 first attempts to call the CS call to the call continuous support device 400 registered to the user in order to use the VCC service, CS call origination is connected to the call continuous support device 400 via the IP-PBX (650) of the specific customer network 600 via the call exchange device 200 and the Internet telephone call exchange device 500, such a connection The process will be the same / corresponding to the process that the existing VCC terminal attempts to call the specific VCC server first when the CS call is input to the called terminal.

Thus, the terminal controller 120 is connected to the call continuous support device 400 through the connection procedure as described above.

When the terminal control unit 120 is connected to the call continuous support device 400, the incoming connection including the incoming connection information corresponding to the incoming terminal device 10 using a predefined messaging service, that is, the incoming terminal number, is included. SMS or MMS including the information in the user data area is provided to the call continuous support device (400).

Accordingly, when the call continuous support device 400 receives a message including specific incoming connection information from the terminal device 100, the call continuous support apparatus 400 attempts to make a call based on incoming connection information (eg, called terminal number) based on the message. A call path with the called terminal device 10 is formed, and a call call between the terminal device 100 and the called terminal device 10 will be interfaced.

Accordingly, the terminal device 100 is connected to the call terminal device 10 and the call path through the call interface through the call continuous support device 400, and thus, the terminal device 100 calls the call terminal device 10. Becomes possible.

In addition, when the terminal device 100 moves during a call and moves to an area where an FMC call (or IMS call) can be made (for example, a region covered by a specific customer network 600), the terminal device uses a VCC service. 120 may apply to the call continuous support device 400 to switch the domain from the current state, that is, the CS domain to the second domain, that is, the IMS domain, by applying a previously selected domain selection policy as described above. Also, as described above, the procedure for converting the call path corresponding to the terminal device 100 from the CS domain to the IMS domain will be performed.

The terminal controller 120 as described above may include a VCC application having a function of executing a VCC service.

Hereinafter, a terminal device according to the present invention will be described in detail with reference to FIG. 3.

The application-based terminal device 100 according to the present invention includes a call input input unit 130 that recognizes a call origination input to a specific called terminal 10, and a predetermined call sequence registered in advance when the call origination input is recognized. Call connection processing unit 140 that attempts to make a call to the support device 400, and when the connection is recognized with a specific call continuous support device 400 according to the call attempt attempts the incoming connection information corresponding to the called terminal device (10) Providing a call connection information providing unit 150 to provide a message including the incoming connection information to a specific call continuous support device 400 through a predefined messaging service.

The call input recognition unit 130 recognizes whether a call is sent to a specific call terminal device 10 when a specific call condition for a call attempt is satisfied, such as a call terminal number is input by a user and a call button is input. do.

When the call origination input is recognized by the call input recognition unit 130, the call origination processing unit 140 attempts to call a specific registered call support device 400.

In other words, when the call originating input unit 140 recognizes a call originating input, the call origination processing unit 140 generates a call using the VCC service or applies the call based on a domain selection policy for domain switching in the current state. It is possible to select which of the first domain and the second domain, that is, the CS domain and the IMS domain. Here, the procedure for the call origination processing unit 140 to select a domain is not particularly limited. That is, the procedure may be the same as selecting a domain in a conventional VCC terminal.

Accordingly, when the first domain, that is, the CS domain, is selected, the call origination processor 140 performs a series of connection procedures for the call with the destination terminal device 10 using the VCC service.

That is, the call origination processing unit 140, when the call originating input is recognized by the call originating input unit 130, first selected by using the device number of the call continuous support device 400 previously registered to use the VCC service Attempt to make a call through the domain.

Therefore, the call origination to the call continuous support device 400 is routed to the Internet telephone call exchange device 500 through the call exchange device 200 in the first domain, that is, the CS domain, and thus to a specific customer network 600 (eg, an enterprise network). In order to be connected to the built-in VCC server (call continuous support device 400) existing inside the first is connected to the IP-PBX (650) of the specific customer network (600). The IP-PBX 650 connects the call origination to the call continuous support device 400 to the call continuous support device 400.

As such, when the CS call origination to the called terminal device 10 is input, the call origination processing unit 140 first attempts to call the CS call to the call continuous support device 400 registered to itself in order to use the VCC service, The CS call origination is connected to the call continuous support device 400 via the IP-PBX 650 of the specific customer network 600 via the call exchange device 200 and the Internet telephone call exchange device 500, such as The connection process will be the same / corresponding to the existing VCC terminal attempts to make a call to a specific VCC server when the CS call is input to the called terminal.

Thus, the call origination processing unit 140 is connected to the call continuous support device 400 through the connection procedure as described above.

When the connection with the specific call continuous support device 400 according to the call origination attempt is recognized, the incoming connection information providing unit 150 provides the incoming connection information corresponding to the destination terminal device 10, thereby pre-defined messaging. Through the service to provide a message including the incoming connection information to a specific call continuous support device 400.

In other words, the incoming connection information providing unit 150 includes the incoming connection information including the called terminal number 10 according to the recognized call origination input and the device number of the connected specific call continuous support device 400. The message request information may be generated, and the message request information may be provided to a specific service device providing the messaging service to request transmission.

That is, the incoming connection information providing unit 150, if the connection with the call continuous support device 400 is confirmed, the incoming call connection information including the called terminal number according to the call origination input and connected specific call continuous support device 400 Generates message request information including a device number. In addition, the incoming connection information providing unit 150 provides the generated message request information to a communication module (not shown) to transmit the message request information to a specific service device that provides a predefined messaging service. To provide the SMS or MMS included in the user data area to the call continuous support device (400).

Accordingly, when the call continuous support device 400 receives a message including specific incoming connection information from the terminal device 100, the call continuous support apparatus 400 attempts to make a call based on incoming connection information (eg, called terminal number) based on the message. A call path with the called terminal device 10 is formed, and a call call between the terminal device 100 and the called terminal device 10 will be interfaced.

Accordingly, the terminal device 100 is connected to the call terminal device 10 and the call path through the call interface through the call continuous support device 400, and thus, the terminal device 100 calls the call terminal device 10. Becomes possible.

In addition, when the terminal device 100 moves during a call and moves to a region where an FMC call (or IMS call) can be made (for example, a region covered by a specific customer network 600), the terminal uses a VCC service and thus a domain switching request. The unit 160 may request the call continuation support device 400 to switch the domain from the current state, that is, the CS domain to the second domain, that is, the IMS domain, by applying a pre-stored domain selection policy as described above. As described above, the procedure for converting the call path corresponding to the terminal device 100 from the CS domain to the IMS domain will be performed.

Hereinafter, with reference to Figure 4 to describe the specific configuration of the call continuous support apparatus according to the present invention.

Call continuous support apparatus 400 according to the present invention, the call originating unit 410 is connected to the terminal device 100 by receiving a call origination from a specific terminal device 100, and is provided from the terminal device 100 A message receiving unit 420 for receiving a message, a called terminal connection unit 430 connected to a specific terminating terminal device 10 according to the incoming connection information by attempting to make a call based on the specific terminating connection information according to the message; And a call interface unit 440 for interfacing a call between the called terminal 10 and the terminal 100 connected according to the call origination attempt.

The call terminal connection unit 410 is connected to the terminal device 100 by forming a call path in response to the call origination from the specific terminal device 100 is received.

The message receiver 420 receives a message provided from the specific terminal device 100. That is, the message receiver 420 may receive a message (eg, SMS, MMS, etc.) provided through a predefined messaging service.

The called terminal connection unit 430 is connected to a specific called terminal device 10 according to the called connection information by attempting to make a call based on the specific called connection information according to the message received through the message receiver 420.

That is, when the receiving terminal connection unit 430 receives at least one message of SMS and MMS through the message receiving unit 420, the called terminal connection unit 430 recognizes the specific called connection information, that is, the specific called terminal number, Attempt to make a call using the called terminal number.

When the called terminal device 10 responds to the call originating attempt of the called terminal connecting unit 430, the called terminal connecting unit 430 forms a call path with the called terminal device 10.

The call interface unit 440 interfaces a call call between the called terminal 10 and the terminal 100 connected according to a call origination attempt.

That is, the call interface unit 440 interfaces a call call between the terminal device 100 connected by the calling terminal connection part 410 and the called terminal device 10 connected by the called terminal connecting part 430. A call between the terminal device 100 and the called terminal device 10 can be made.

Furthermore, the call continuous support apparatus 400 further includes a domain switcher 450.

The domain switching unit 450 may include at least one of the terminal apparatus 100 and the terminating terminal apparatus 10 that requested domain switching according to a domain switching request from at least one of the terminal apparatus 100 and the terminating terminal apparatus 10. In response to the pre-encrypted domain switching control information based on the domain switching control (anchoring) is performed.

That is, when the domain switch unit 450 requests a domain switch (eg, CS domain-> IMS domain) from the terminal apparatus 100 while interfacing a call between the terminal apparatus 100 and the called terminal apparatus 10, the domain switching unit 450 is requested. The call corresponding to the terminal device 100 is based on the domain switching control information (for example, Call ID, Public User Identity, etc.) that is anchored when the calling terminal connection unit 410 is formed / connected with the terminal device 100. Perform a domain switch for the call.

Of course, the domain switching unit 450 switches the domain from the terminating terminal device 10 using the VCC service while interfacing a call between the terminal device 100 and the terminating device device 10 (eg, IMS domain-> CS). When the domain) is requested, the called terminal device (430) based on the domain switching control information (e.g., Call ID, Public User Identity, etc.) that is anchored when the incoming terminal connection unit 430 forms / connects with the called terminal device 10. Performs domain switching for the call call corresponding to 10).

Here, the procedure for switching the domain of the terminal according to the domain switch request by the domain switcher 450 is not particularly limited. That is, the procedure may be the same as the procedure of switching a domain for a specific VCC terminal in a call in a conventional VCC server.

As described above, in the call continuous service providing system according to the present invention, a terminal device is a called terminal device in an environment in which a built-in call continuous support device (VCC server) exists in a specific customer network (for example, a corporate network). In order to use the VCC service when entering a call to a call, first, it is connected to the call continuous support device, and then provides a called terminal number of the called terminal device by using a messaging service instead of the existing DTMF signal. It can solve the incompleteness such as the cost increase caused by the installation of the media board.

Hereinafter, a method of providing a call continuation service according to a preferred embodiment of the present invention will be described with reference to FIGS. 5 to 7. Here, for convenience of description, the configurations shown in FIGS. 1 to 4 will be described with reference to corresponding reference numerals.

First, a call continuation service providing method according to an exemplary embodiment of the present invention will be described with reference to FIG. 5.

When the terminal device 100 inputs a call origination to a specific destination terminal device 10, the terminal device 100 connects to a specific registered call support device 400.

The terminal device 100 generates a call using a VCC service or stores a domain selection policy for domain switching, and applies it when a call is generated for a call generation or when a condition that requires domain switching during a call occurs. Select the domain to switch to.

Accordingly, the terminal device 100 attempts to send a call to a specific call continuous support device 400 registered in advance to use a VCC service when a call origination input is input to a specific called terminal device 10 (S20). When connected to the continuous support device 400 (S25), it is possible to provide the incoming connection information corresponding to the receiving terminal device 10 by using a predefined messaging service (S30).

That is, the terminal device 100, if a specific calling condition for the call attempt is satisfied, such as a called terminal number is input by the user and a calling button is input, and the call originating input to the specific called terminal device 10 is recognized, By applying the stored domain selection policy, it is possible to select whether to use the first domain and the second domain, that is, the CS domain and the IMS domain. Here, the procedure for the terminal device 100 to select a domain is not particularly limited. That is, the procedure may be the same as selecting a domain in a conventional VCC terminal.

Accordingly, when the first domain, that is, the CS domain, is selected, the terminal device 100 performs a series of connection procedures for the call with the destination terminal device 10 using the VCC service.

Specifically, when a call origination to the called terminal device 10 is input, the terminal device 100 first attempts to make a call using the device number of the call continuous support device 400 previously registered to use the VCC service ( S20).

Therefore, the call origination to the call continuous support device 400 is routed to the Internet telephone call exchange device 500 through the call exchange device 200 in the first domain, that is, the CS domain, and thus to a specific customer network 600 (eg, an enterprise network). In order to be connected to the built-in VCC server (call continuous support device 400) existing inside the first is connected to the IP-PBX (650) of the specific customer network (600). The IP-PBX 650 connects the call origination to the call continuous support device 400 to the call continuous support device 400.

As such, when the CS call origination to the called terminal device 10 is input, the terminal device 100 first attempts to call the CS call to the call continuous support device 400 previously registered to the terminal device 100 to use the VCC service. CS call origination is connected to the call continuous support device 400 via the IP-PBX (650) of the specific customer network 600 via the call exchange device 200 and the Internet telephone call exchange device 500, such a connection The process will be the same / corresponding to the process that the existing VCC terminal attempts to call the specific VCC server first when the CS call is input to the called terminal.

Accordingly, the terminal device 100 is connected to the call continuous support device 400 through the connection procedure as described above (S25).

As described above, the call continuous support device 400 is a built-in VCC server existing inside a specific customer network 600 to provide a VCC service by interworking with a corporate FMC line of a specific customer network 600 as described above. desirable.

When the call origination from the terminal device 100 is received, the call continuous support device 400 forms a call path with the terminal device 100 in response thereto.

When the terminal device 100 confirms the connection with the call continuous support device 400, the terminal device 100 receives the incoming connection information (eg, called terminal number) corresponding to the called terminal device 10 in a predefined messaging service (eg, SMS, MMS and the like provides a service server (3000) through a service server (400) (S30).

Accordingly, when the call continuous support device 400 receives a message including specific incoming connection information from the terminal device 100, the call continuous support apparatus 400 attempts to make a call according to the incoming connection information (for example, the called terminal number) based on this ( S40), and forms a communication path with the called terminal 10 is connected (S45).

In addition, the call continuous support device 400, through the call path connected between itself and the terminal device 100 and the call path connected between itself and the receiving terminal device 10, the terminal device 100 and the receiving terminal device 10 Interface the call call between (S50).

Accordingly, the terminal device 100 is connected to the receiving terminal device 10 and the call path through the call interface through the call continuous support device 400 is enabled to make a call with the receiving terminal device 10.

In addition, when the terminal device 100 moves during a call and moves to an area where an FMC call (or IMS call) can be made (for example, a region covered by a specific customer network 600), the terminal device 100 may provide a VCC service. Since it is a terminal to be used, it is possible to request the call continuity support device 400 to switch the domain from the current state, that is, the CS domain to the second domain, that is, the IMS domain by applying a pre-stored domain selection policy as described above (S60). In operation S70, the call path corresponding to the terminal device 100 may be converted from the CS domain to the IMS domain as described above (S70).

Hereinafter, a method of operating a terminal device according to the present invention will be described in more detail with reference to FIG. 6.

In another embodiment of the present invention, a method of operating a terminal device 100 includes a caller's call to a specific caller device 10 because the caller's call is input to the caller's device 10 by satisfying a specific call condition for a call attempt. Recognizes whether or not it is entered.

In another embodiment of the present invention, when the call originating input is recognized (S100), an attempt is made to make a call to a specific registered call support device 400, which is connected to the call support device 400. It becomes (S110).

In other words, when the call origination input is recognized, the method of operating the terminal device 100 according to the present invention may generate a call using the VCC service or may apply the call based on a domain selection policy for domain switching. You can choose whether to use a domain and a second domain, a CS domain or an IMS domain. Here, the procedure for selecting a domain is not particularly limited. That is, the procedure may be the same as selecting a domain in a conventional VCC terminal.

Accordingly, when the first domain, that is, the CS domain, is selected, the operation method of the terminal device 100 according to the present invention performs a series of connection procedures for the call with the destination terminal device 10 using the VCC service.

In other words, the operation method of the terminal device 100 according to the present invention, first, attempts to make a call through the CS domain selected using the device number of the call continuous support device 400 previously registered to use the VCC service.

Therefore, the call origination to the call continuous support device 400 is routed to the Internet telephone call exchange device 500 through the call exchange device 200 in the first domain, that is, the CS domain, and thus to a specific customer network 600 (eg, an enterprise network). In order to be connected to the built-in VCC server (call continuous support device 400) existing inside the first is connected to the IP-PBX (650) of the specific customer network (600). The IP-PBX 650 connects the call origination to the call continuous support device 400 to the call continuous support device 400.

As such, when the CS call origination to the called terminal device 10 is input, the operation method of the other terminal device 100 in the present invention, first to the call continuous support device 400 registered to the first to use the VCC service CS call is attempted, and CS call is sent through the call exchanger 200 and the Internet telephone call exchanger 500 through the IP-PBX 650 of a specific customer network 600 (400). This connection process will be the same / corresponding to the existing VCC terminal attempts to make a call to a specific VCC server first when inputting a CS call to the called terminal.

Accordingly, the operation method of the terminal device 100 according to the present invention is connected to the call continuous support device 400 through the connection procedure as described above.

And the operation method of the terminal device 100 according to the present invention, if the connection to the specific call continuous support device 400 according to the call origination attempt is provided, by providing the incoming connection information corresponding to the called terminal device 10 To provide a message including the incoming connection information to a specific call continuous support device 400 through a predefined messaging service (S120).

In other words, the operation method of the other terminal device 100 in the present invention, the incoming connection information including the called terminal number 10 according to the recognized call origination input and the connected specific call continuous support device 400 Message request information including a device number may be generated, and the message request information may be provided to a specific service device providing the messaging service to request transmission.

That is, the operation method of the terminal device 100 according to the present invention, when the connection with the call continuous support device 400 is confirmed, the incoming call connection information including the called terminal number according to the call origination input and connected specific call continuous support device Message request information including the device number of 400 is generated. In addition, the operation method of the terminal device 100 according to the present invention provides the generated message request information to a communication module (not shown), and provides the message request information to a specific service device 300 that provides a predefined messaging service. It is to transmit the SMS or MMS including the incoming connection information in the user data area to the call continuous support device 400.

Accordingly, when the call continuous support device 400 receives a message including specific incoming connection information from the terminal device 100, the call continuous support apparatus 400 attempts to make a call based on incoming connection information (eg, called terminal number) based on the message. A call path with the called terminal device 10 is formed, and a call call between the terminal device 100 and the called terminal device 10 will be interfaced.

Therefore, the operation method of another terminal device 100 according to the present invention, the call terminal device 10 and the call path is connected through the call interface through the call continuous support device 400, the terminal device 100 is called The call with the terminal device 10 can be made (S130).

In addition, when the terminal device 100 moves during a call and moves to an area where an FMC call (or IMS call) can be made (for example, an area covered by a specific customer network 600), a domain switching condition occurs (S140). Since the operation method of the terminal device 100 according to the present invention is a terminal using a VCC service, a call continuous support device is configured to apply a pre-stored domain selection policy to switch the domain from the current state, that is, the CS domain to the second domain, that is, the IMS domain. 400), and the call continuous support device 400 will also perform a procedure for converting the call path corresponding to the terminal device 100 from the CS domain to the IMS domain as before.

Hereinafter, an operation method of the call continuous support apparatus according to the present invention will be described in more detail with reference to FIG. 7.

In the method of operating the call continuous support apparatus 400 according to the present invention, when a call origination from a specific terminal apparatus 100 is received, a call path is formed with the terminal apparatus 100 in response thereto (S200).

After that, the operation method of the call continuous support apparatus 400 according to the present invention receives a message provided from the terminal apparatus 100 (S210). That is, the operation method of the call continuous support apparatus 400 according to the present invention may receive a message (eg, SMS, MMS, etc.) provided through a predefined messaging service.

The operation method of the call continuous support apparatus 400 according to the present invention is connected to a specific called terminal device 10 according to the called connection information by attempting to make a call based on the specific called connection information according to the received message.

That is, in the method of operating the call continuous support apparatus 400 according to the present invention, when at least one message of SMS and MMS is received, specific call connection information included in the message, that is, recognizes a specific call terminal number (S220). ), Attempts to make a call using the recognized called terminal number, and when the called terminal device 10 responds in response, forms a call path with the called terminal device 10 and is connected (S230).

Accordingly, the operation method of the call continuous support apparatus 400 according to the present invention interfaces a call call between the called terminal 10 and the terminal 100 connected according to the call origination attempt (S240).

That is, in the operation method of the call continuous support apparatus 400 according to the present invention, a call call is interfaced between the terminal device 100 to be connected and the receiving terminal device 10 to be connected, and thus, the terminal device 100 and the receiving terminal. A call between the devices 10 becomes possible.

Furthermore, the operation method of the call continuous support device 400 according to the present invention, when a domain switch request from at least one of the terminal device 100 and the receiving terminal device 10 is received (S250) accordingly the domain switch In response to at least one of the requested terminal apparatus 100 and the called terminal apparatus 10, domain switching for a call is performed based on domain switching control information that has been previously anchored (S260).

That is, in the method of operating the call continuous support apparatus 400 according to the present invention, the terminal device 100 switches the domain from the terminal device 100 (eg, CS domain) while interfacing a call call between the terminal device 100 and the called terminal device 10. -> IMS domain) is requested, based on the domain switching control information (e.g., Call ID, Public User Identity, etc.) anchored when forming / connecting to a call with the terminal device 100 corresponding to the terminal device 100 Perform a domain switch for the call.

Of course, the operation method of the call continuous support apparatus 400 according to the present invention, the domain switching from the receiving terminal device 10 using the VCC service during the interface of the call between the terminal device 100 and the receiving terminal device 10 (Eg, IMS domain-> CS domain) is requested, the called terminal device based on the domain switching control information (e.g., Call ID, Public User Identity, etc.) anchored when forming / connecting to a call terminal 10 Domain switching for the call call corresponding to (10) is performed.

Here, the procedure for switching the domain of the terminal according to the domain switching request is not particularly limited. That is, the procedure may be the same as the procedure of switching a domain for a specific VCC terminal in a call in a conventional VCC server.

As described above, the method for providing a call continuity service according to the present invention includes a call terminal device in an environment in which a built-in call continuity support device (VCC server) exists in a specific customer network (for example, a corporate network). In order to use the VCC service when entering a call to a call, first, it is connected to the call continuous support device, and then provides a called terminal number of the called terminal device by using a messaging service instead of the existing DTMF signal. It can solve the incompleteness such as the cost increase caused by the installation of the media board.

Meanwhile, the steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of both. A software module may reside in a RAM memory, a flash memory, a ROM memory, an EPROM memory, an EEPROM memory, registers, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such that the processor can read information from, and write information to, the storage medium. Alternatively, the storage medium may be integrated into the processor. The processor and the storage medium may be included within an ASIC. The ASIC may be included in the terminal. In the alternative, the processor and the storage medium may reside as discrete components in a terminal.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

In an environment where a built-in call continuity support device (VCC server) exists in a specific customer network (eg, a corporate network), the call continuity support device is first used to use the VCC service when the terminal device sends a call to the called device. In the case of applying the call continuous service providing system and method using a messaging service instead of the existing DTMF signal in providing the called terminal number of the called terminal device after being connected to the terminal, the cost reduction and service quality of the device for the VCC service, User Satisfaction can produce very large results, and the possibility of marketing or sales of the applied call continuous support device and terminal device and the service solution through it is not only sufficient, but also can be clearly implemented in reality.

10: incoming terminal device 100: terminal device
400: continuous call support device

Claims (14)

A terminal device for connecting to a specific registered call continuous support device and providing incoming connection information corresponding to the called terminal device by using a predefined messaging service when a call origination is input to a specific called terminal device; And
When a message including specific incoming connection information is received from the connected terminal device, a call continuous support device for attempting to originate a call according to the incoming connection information and interfacing a call between the terminal device and the called terminal device is provided. Call continuous service providing system comprising a. A convoy receiving unit supporting convoy / receive through at least one of the first domain and the second domain; And
When a call origination is input to a specific called terminal device based on a specific domain among the first domain and the second domain, the call connection unit connects to a specific registered call continuous support device through the call receiving unit and corresponds to the called terminal device. Terminal device characterized in that it comprises a terminal control unit for providing information using a predefined messaging service. The method of claim 2,
The terminal control unit,
When a call origination attempt to the called terminal device is input, an attempt is made to send a call to the specific call continuous support device by using a specific registered device number, and when connected to the call continuous support device, the predefined messaging The terminal device characterized in that for generating at least one message of the SMS and MMS including the called connection information including the called terminal number according to the call origination input to the call continuous support device. An outgoing input recognizer for recognizing a call originating input to a specific called terminal device;
A call origination processing unit for attempting to originate a call to a specific registered call support device when the call origination input is recognized; And
When the connection with the specific call continuous support device according to the call origination attempt is recognized, the call connection information corresponding to the called terminal device is provided, and the message including the call connection information is defined through a predefined messaging service. Terminal device characterized in that it comprises a call connection information providing unit to provide a continuous call support device. The method of claim 4, wherein
The incoming connection information providing unit,
Generating message request information including the called connection information including the called terminal number according to the recognized call origination input and the device number of the connected specific call continuous support device, and providing the message request information to the messaging service; Terminal device characterized in that the request for transmission by providing to a specific service device. An outgoing terminal connection unit receiving a call origination from a specific terminal device and connected to the terminal device;
A message receiving unit which receives a message provided from the terminal device;
A terminating terminal connection unit connected to a specific terminating terminal device according to the terminating connection information by attempting to make a call based on the specific terminating connection information according to the message; And
And a call interface unit for interfacing a call between the called terminal device and the terminal device connected according to the call origination attempt. The method according to claim 6,
The called terminal connection portion,
Receiving at least one message of the SMS and MMS through the message receiving unit, call continuous support device, characterized in that to recognize a specific called terminal number included in the message and attempts to call using the called terminal number. The method according to claim 6 or 7,
In response to a domain switching request from at least one of the terminal apparatus and the terminating terminal apparatus, based on domain switching control information previously anchored in response to at least one of the terminal apparatus and the terminating terminal apparatus requesting domain switching. Call continuous support device further comprises a domain switching unit for performing a domain switch for the call. Connecting, by the terminal device, to a specific registered call continuous support device when a call origination is input to a specific called terminal device;
Providing, by the terminal device, incoming connection information corresponding to the called terminal device by using a predefined messaging service when the connection with the call continuous support device is confirmed;
When the call continuous support device receives a message including the incoming connection information, attempting to make a call according to the incoming connection information based on the received message; And
And when the call continuity supporting device is connected to the called terminal device according to the call origination attempt, interfacing a call call between the terminal device and the called terminal device. An originating terminal connection step of receiving a call origination from a specific terminal apparatus and connecting with the terminal apparatus;
A message receiving step of receiving a message provided from the terminal device;
A terminating terminal connection step of connecting to a specific terminating terminal device according to the terminating connection information by attempting to make a call based on the specific terminating connection information according to the message; And
And a call interface step of interfacing a call between the called terminal device and the terminal device connected according to the call origination attempt. 11. The method of claim 10,
The called terminal connection step,
Receiving at least one message of the SMS and MMS through the message receiving unit, recognizes a specific called terminal number included in the message and attempts to make a call using the called terminal number characterized in that How it works. The method of claim 10 or 11,
In response to a domain switching request from at least one of the terminal apparatus and the terminating terminal apparatus, based on domain switching control information previously anchored in response to at least one of the terminal apparatus and the terminating terminal apparatus requesting domain switching. And a domain switching step of performing a domain switching for the call. Recognizing a call origination input to a specific called terminal device;
If the call originating input is recognized, attempting to make a call to a specific registered call support device;
When the connection with the specific call continuous support device according to the call origination attempt is recognized, the call connection information corresponding to the called terminal device is provided, and the message including the call connection information is defined through a predefined messaging service. And a command for executing the step of providing the call continuous support device. The method of claim 13,
Instructions for executing the step of providing the incoming connection information,
Generating message request information including the called connection information including the called terminal number according to the recognized call origination input and the device number of the connected specific call continuous support device, and providing the message request information to the messaging service; A computer-readable recording medium, characterized in that a request for transmission by providing to a specific service device.

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