WO2012126382A1 - Method for implementing main exchange service and gateway apparatus - Google Patents

Abstract

Embodiments of the present invention provide a method for implementing a main exchange service and a gateway apparatus. The method comprises: a gateway apparatus receiving an invitation request message from a calling terminal, the invitation request message comprising a preset main exchange identifier; the gateway apparatus sending prompt information corresponding to the main exchange identifier to the calling terminal according to the main exchange identifier, to prompt the calling terminal to provide an extension identifier of a called terminal; the gateway apparatus transferring, according to the acquired extension identifier of the called terminal, a call triggered by the invitation request message to the called terminal through an SIP server, so that the calling terminal holds conversation with the called terminal. Through the embodiments of the present invention, the problem in the prior art that the load of the SIP server is increased since the main exchange service is implemented by adopting the SIP server can be avoided, thereby reducing the load of the SIP server, and ensuring the normal running of the main exchange service.

Description

 Method for implementing switchboard service and gateway device

 The embodiments of the present invention relate to communication technologies, and in particular, to a method for implementing switchboard services and a gateway device. Background technique

 In the current communication field, a terminal can access an IP packet network through a gateway device. Further, the IP packet network can be connected to a Session Initiation Protocol (SIP) network, for example, a Next Generation Network (NGN) with a softswitch as the core, so that the terminal can implement the switchboard service through the SIP server. .

 However, in the prior art, the SIP server is used to implement the switchboard service, which causes the load of the SIP server to increase, and even affects the normal operation of the switchboard service. Summary of the invention

 The embodiment of the invention provides a method for implementing the switchboard service and a gateway device, which are used to reduce the load of the SIP server and ensure the normal operation of the switchboard service.

 An embodiment of the present invention provides a method for implementing a switchboard service, including:

 The gateway device receives an invitation request message from the calling terminal, where the invitation request message includes a preset switchboard identifier;

 Sending, by the gateway device, the prompt information corresponding to the switchboard identifier to the calling terminal, according to the switchboard identifier, to prompt the caller terminal to provide an extension identifier of the called terminal;

 The gateway device transfers the call triggered by the invitation request message to the called terminal by using a SIP server according to the obtained extension identifier of the called terminal, so that the calling terminal and the called terminal perform call.

 The embodiment of the invention further provides a gateway device, including:

 a receiving module, configured to receive an invitation request message from the calling terminal, where the invitation request message includes a preset switchboard identifier;

 a prompting module, configured to send, according to the switchboard identifier, prompt information corresponding to the switchboard identifier to the calling terminal, to prompt the caller terminal to provide an extension identifier of the called terminal;

a transfer module, configured to use the SIP server according to the obtained extension identifier of the called terminal Transferring the call triggered by the invitation request message to the called terminal, so that the calling terminal talks with the called terminal.

 According to the foregoing technical solution, after the gateway device of the embodiment of the present invention receives the invitation request message from the calling terminal that includes the preset switchboard identifier, the gateway device sends the prompt information corresponding to the switchboard identifier to the calling terminal to enable the gateway. The device can transfer the call triggered by the invitation request message to the called terminal through the SIP server according to the acquired extension identifier of the called terminal, thereby implementing a call between the calling terminal and the called terminal (extension device). The switchboard business ensures the normal operation of the switchboard business, and can also avoid the adoption of the existing technology.

The problem of increased load on the SIP server caused by the SIP server implementing the switchboard service reduces the load on the SIP server. DRAWINGS

 In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief description of the drawings used in the embodiments or the prior art description will be briefly described below. Obviously, the drawings in the following description It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any creative work.

 1 is a schematic flowchart of a method for implementing a switchboard service according to Embodiment 1 of the present invention; FIG. 2 is a schematic flowchart of a method for implementing a switchboard service according to Embodiment 2 of the present invention; FIG. 4 is a schematic structural diagram of a gateway device according to Embodiment 4 of the present invention; FIG. 5 is another schematic structural diagram of a gateway device according to Embodiment 4 of the present invention. detailed description

 The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is a partial embodiment of the invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

FIG. 1 is a schematic flowchart of a method for implementing a switchboard service according to Embodiment 1 of the present invention, as shown in FIG. As shown in FIG. 1, the implementation method of the switchboard service in this embodiment may include the following steps:

 Step 101: The gateway device receives an invitation request message from the calling terminal, where the invitation request message includes a preset switchboard identifier.

 Before the step 101, each terminal may perform a gateway (Trunk Gateway, TG for short), an Access Gateway (AG), and an Integrated Access Device (IAD) to the SIP server through the corresponding gateway device. The gateway device (for example:

TG, AG, or IAD, etc.) may also use a preset switchboard identifier to simulate a virtual terminal (ie, a terminal corresponding to the switchboard identity) to register with the SIP server, and instruct the SIP server to configure the virtual terminal to have call forwarding. (Explicit Call Transfer, referred to as ECT) function. The virtual terminal may be regarded as a host device, and other terminals (ie, the foregoing terminals) may be regarded as an extension device.

 It should be noted that the operation of registering the SIP server with the corresponding gateway device and the registration of the SIP server with the corresponding gateway device is similar to that of the virtual terminal. The only difference is that the virtual terminal does not need to correspond to a real terminal. Cannot be used directly as a normal terminal.

 Step 102: The gateway device sends, according to the switchboard identifier, prompt information corresponding to the switchboard identifier to the calling terminal, to prompt the caller terminal to provide an extension identifier of the called terminal.

 In step 102, the gateway device may send, according to the obtained switchboard identifier, the prompt information corresponding to the switchboard identifier to the calling terminal, to prompt the caller terminal to provide the extension identifier of the called terminal, for example, the gateway device gives The calling terminal plays a prompt tone of "Please dial the extension number", and the user of the calling terminal can then input the extension number through the input keyboard of the calling terminal according to the prompt tone.

Step 103: The gateway device transfers, according to the obtained extension identifier of the called terminal, the call triggered by the invitation request message to the called terminal by using a SIP server, so that the foregoing The calling terminal makes a call with the called terminal.

 Specifically, in step 103, the gateway device may specifically use the ECT function to transfer the call triggered by the invitation request message to the called terminal by using an ECT function according to the obtained extension identifier of the called terminal, that is, The gateway device may send a message (eg, an information message, an invitation request message, etc.) containing the extension identity of the called terminal to the SIP server to cause the SIP server to transfer the call to the called terminal.

 Optionally, the foregoing SIP server in this embodiment may be an NGN server or an IP Multimedia Subsystem (IMS) server.

 In this embodiment, after receiving the invitation request message from the calling terminal that includes the preset total identifier, the gateway device sends the prompt information corresponding to the switchboard identifier to the calling terminal, so that the gateway device can obtain the foregoing according to the obtained The extension identifier of the called terminal transfers the call triggered by the above request request message to the called terminal through the SIP server, thereby realizing the call between the calling terminal and the called terminal (extension device), that is, the switchboard service, ensuring the switchboard The normal operation of the service can also avoid the problem of increasing the load of the SIP server caused by the use of the SIP server to implement the switchboard service in the prior art, and reduce the load of the SIP server.

 In order to make the method provided by the embodiment of the present invention clearer, NGN and IMS will be taken as an example below.

 FIG. 2 is a schematic flowchart of a method for implementing a switchboard service according to Embodiment 2 of the present invention. The embodiment is applicable to an NGN. In this embodiment, the terminal A, the terminal B, and the terminal C are all registered to the NGN server, where the terminal A is a device under the IAD, and is configured as a switchboard device, and is configured with an ECT function; the terminal B is a device under the gateway device 1; Terminal C is a device under gateway device 2 as an extension device. As shown in FIG. 2, the method for implementing the switchboard service in this embodiment may include the following steps:

 Step 201: The terminal B sends an invite (Invite) request message to the NGN server, where the request request message includes the host identifier of the terminal A (that is, the phone number of the terminal A);

Step 202: The NGN server sends the foregoing invite request message to the IAD. Step 203: The IAD sends a 180 (ringing) response message and a 200 (OK) response message to the NGN server.

 Step 204: The NGN server sends the foregoing 180 (ringing) response message and the foregoing 200 (OK) response message to the terminal B.

 Step 205: The terminal B sends an acknowledgement (Ack) message to the NGN server.

 Step 206: The NGN server sends the foregoing acknowledgement message to the IAD.

 So far, through steps 201 to 206, the terminal B under the gateway device 1 calls the terminal A under the IAD and turns on.

 Step 207: The IAD plays a prompt tone of "Please dial the extension number" to the terminal B;

 Step 208: The user of the terminal B inputs the extension identifier of the terminal C (ie, the extension number of the terminal C) through the input keyboard of the terminal B;

 Step 209: The IAD sends an information (Info) message to the NGN server according to the detected extension identifier of the terminal C, where the information message includes the extension identifier of the terminal C.

 Step 210: The NGN server sends an invite request message to the terminal C, where the invite request message includes the host identifier of the terminal C.

 Step 211: The terminal C sends a 180 (ringing) response message to the NGN server. Step 212: The NGN server sends the 180 (ringing) response message to the IAD. Step 213: The IAD simulates an on-hook event, and sends a goodbye (Bye) message to the NGN server. Step 214: The NGN server sends a 200 (OK) response message to the IAD.

 Step 215: The terminal C sends a 200 (OK) response message to the NGN server.

 Step 216: The NGN server sends an acknowledgement message to the terminal C.

 Step 217: The NGN server sends an invite request message to the terminal B. The invite request message includes a session description protocol (SDP) message body, where the SDP message body includes the media information of the terminal C, for example, the real time of the terminal C. Transport protocol ( Real

Time Transport Protocol (RTP) port number, IP address of terminal C, etc., used to indicate that the media of terminal B is redirected to terminal C; Step 218: The terminal B sends a 200 (OK) response message to the NGN server.

 Step 219: The NGN server sends an acknowledgement message to the terminal B.

 Step 220: The NGN server sends an invite request message to the terminal C, where the invite request message includes an SDP message body, where the SDP message body includes media information of the terminal B, for example, an RTP port number of the terminal B, an IP address of the terminal B, and the like. The device is used to indicate that the media of the terminal C is redirected to the terminal B. Step 221: The terminal C sends a 200 (OK) response message to the NGN server.

 Step 222: The NGN server sends an acknowledgement message to the terminal C.

 Step 223: The terminal B makes a call with the terminal C.

 At this point, when the IP packet network is connected to the NGN, the switchboard service is implemented on the IAD.

 In this embodiment, after the IAD receives the invitation request message from the calling terminal that includes the preset switchboard identifier, the IAD can send the prompt information corresponding to the switchboard identifier to the calling terminal, so that the IAD can be obtained according to the obtained called party. The extension identifier of the terminal, the call triggered by the invitation request message is transferred to the called terminal by the NGN server, thereby realizing the call between the calling terminal and the called terminal (extension device), that is, the switchboard service, and ensuring the switchboard service. Normally, it is also possible to avoid the problem of an increase in the load of the NGN server caused by the use of the NGN server to implement the switchboard service in the prior art, and reduce the load on the NGN server.

 FIG. 3 is a schematic flowchart of a method for implementing a switchboard service according to Embodiment 3 of the present invention. The embodiment is applicable to an IMS. In this embodiment, the terminal A, the terminal B, and the terminal C are all registered to the NGN server, where the terminal A is a device under the IAD, and is configured as an switchboard device, and is configured with an ECT function; the terminal B is a device under the gateway device 1; Terminal C is a device under gateway device 2 as an extension device. As shown in FIG. 3, the method for implementing the switchboard service in this embodiment may include the following steps: Step 301: The terminal B sends an invite (Invite) request message to the IMS server, where the invite request message includes the host identifier of the terminal A (ie, the terminal). A's phone number);

 Step 302: The IMS server sends the foregoing invite request message to the IAD.

Step 303: The IAD sends a 180 (ringing) response message and a 200 (OK) response message to the IMS server. Step 304: The IMS server sends the foregoing 180 (ringing) response message and the foregoing 200 (OK) response message to the terminal B.

 Step 305: The terminal B sends an acknowledgement (Ack) message to the IMS server.

 Step 306: The IMS server sends the foregoing acknowledgement message to the IAD.

 So far, through steps 301 to 306, the terminal B under the gateway device 1 calls the terminal A under the IAD and turns on.

 Step 307: The IAD plays a prompt tone of "Please dial the extension number" to the terminal B;

 Step 308: The user of the terminal B inputs the extension identifier of the terminal C (ie, the extension number of the terminal C) through the input keyboard of the terminal B;

 Step 309: The IAD sends an invitation request message to the IMS server according to the detected extension identifier of the terminal C, where the invitation request message includes the extension identifier of the terminal C.

 Step 310: The IMS server sends the foregoing invite request message to the terminal C.

 Step 311: The terminal C sends a 180 (ringing) response message to the IMS server. Step 312: The IMS server sends the 180 (ringing) response message to the IAD. Step 313: The IAD simulates an on-hook event, and sends a forwarding message to the IMS server. Used to initiate a subscription;

 Step 314: The IMS server sends a 200 (OK) response message to the IAD.

 Step 315: The IMS server sends a Notify message to the IAD to indicate that the subscription is terminated.

 Step 316: The IAD sends a 200 (OK) response message to the IMS server.

 Step 317: The IMS server sends a goodbye message to the IAD.

 Step 318: The IAD sends a 200 (OK) response message to the IMS server.

 Step 319: The terminal C sends a 200 (OK) response message to the IMS server.

 Step 320: The IMS server sends an acknowledgement message to the terminal C.

Step 321: The IMS server sends an invite request message to the terminal B, where the invite request message includes an SDP message body, where the SDP message body includes media information of the terminal C, and is used to indicate the end. The media of the end B is redirected to the terminal C;

 Step 322: The terminal B sends a 200 (OK) response message to the IMS server.

 Step 323: The IMS server sends an acknowledgement message to the terminal B.

 Step 324: The IMS server sends an invite request message to the terminal C, where the invite request message includes an SDP message body, and the SDP message body includes the media information of the terminal B, and is used to indicate that the media of the terminal C is redirected to the terminal B.

 Step 325: The terminal C sends a 200 (OK) response message to the IMS server.

 Step 326: The IMS server sends an acknowledgement message to the terminal C.

 Step 327: Terminal B makes a call with terminal C.

 At this point, when the IP packet network is connected to the IMS, the switchboard service is implemented on the IAD.

 In this embodiment, after the IAD receives the invitation request message from the calling terminal that includes the preset switchboard identifier, the IAD can send the prompt information corresponding to the switchboard identifier to the calling terminal, so that the IAD can be obtained according to the obtained called party. The extension identifier of the terminal, the call triggered by the invitation request message is transferred to the called terminal by the IMS server, thereby realizing the call between the calling terminal and the called terminal (extension device), that is, the switchboard service, and ensuring the switchboard service. Work properly.

 It should be noted that, for the foregoing method embodiments, for the sake of simple description, they are all expressed as a series of action combinations, but those skilled in the art should understand that the present invention is not limited by the described action sequence. Because certain steps may be performed in other sequences or concurrently in accordance with the present invention. In addition, those skilled in the art should also understand that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present invention.

 In the above embodiments, the descriptions of the various embodiments are different, and the parts that are not detailed in a certain embodiment can be referred to the related descriptions of other embodiments.

4 is a schematic structural diagram of a gateway device according to Embodiment 4 of the present invention. As shown in FIG. 4, the gateway device in this embodiment may include a receiving module 41, a prompting module 42, and a forwarding module 43. The receiving module 41 is configured to receive an invite request message from the calling terminal, where the invitation request is The message module includes a preset identifier of the switchboard; the prompting module 42 is configured to send, according to the switchboard identifier, the prompt information corresponding to the switchboard identifier to the calling terminal, to prompt the caller terminal to provide the extension identifier of the called terminal; The module 43 is configured to transfer, by using the SIP server, the call triggered by the invitation request message received by the receiving module 41 to the called terminal according to the acquired extension identifier of the called terminal, so that the calling terminal and the called terminal perform the call. call.

 The functions of the gateway device, the second and the third IAD in the first embodiment of the present invention can be implemented by the gateway device provided by the embodiment of the present invention.

 Further, as shown in FIG. 5, the gateway device in this embodiment may further include a registration module 51, which may be configured to register with the SIP server by using a preset switchboard identifier, so that the receiving module 41 receives through the SIP server. An invitation request message from the calling terminal, and can also be used to indicate that the terminal corresponding to the foregoing switchboard configuration has the ECT function, so that the transfer module 43 triggers the invitation request message received by the receiving module 41 through the SIP server. The call is transferred to the above called terminal.

 Specifically, the transfer module 43 in this embodiment may specifically transfer the call triggered by the invitation request message to the called terminal by using the ECT function according to the acquired extension identifier of the called terminal.

 Optionally, the foregoing SIP server in this embodiment may be an NGN server, or may be an IMS server.

 Optionally, the forwarding module 43 in this embodiment may send an information message including the extension identifier of the called terminal to the NGN server according to the obtained extension identifier of the called terminal, so that the NGN server sends the call. Transferring to the called terminal; or sending an invitation request message including the extension identifier of the called terminal to the IMS server according to the acquired extension identifier of the called terminal, so that the IMS server transfers the call to the foregoing The called terminal.

In this embodiment, after receiving the invitation request message from the calling terminal that includes the preset switchboard identifier, the receiving module of the gateway device sends the foregoing total to the calling terminal through the prompting module. The prompt information corresponding to the machine identifier enables the transfer module to transfer the call triggered by the invitation request message to the called terminal through the SIP server according to the acquired extension identifier of the called terminal, thereby implementing the calling terminal and the called terminal. The call between the (extension device), that is, the switchboard service, ensures the normal operation of the switchboard service, and can also avoid the problem of increasing the load of the SIP server caused by the use of the SIP server to implement the switchboard service in the prior art, and reduce the SIP server. The load.

 A person skilled in the art can understand that all or part of the steps of implementing the above method embodiments may be completed by using hardware related to program instructions, and the foregoing program may be stored in a computer readable storage medium, and the program is executed when executed. The foregoing steps include the steps of the foregoing method embodiments; and the foregoing storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk. It should be noted that the above embodiments are only for explaining the technical solutions of the present invention, and are not intended to be limiting; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that: The technical solutions described in the foregoing embodiments are modified, or some of the technical features are equivalently replaced. The modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

Rights request A method for implementing a switchboard service, characterized in that:  The gateway device receives an invitation request message from the calling terminal, where the invitation request message includes a preset switchboard identifier;  Sending, by the gateway device, the prompt information corresponding to the switchboard identifier to the calling terminal, according to the switchboard identifier, to prompt the caller terminal to provide an extension identifier of the called terminal;  The gateway device passes the session initial protocol according to the acquired extension identifier of the called terminal. The SIP server transfers the call triggered by the invitation request message to the called terminal, so that the calling terminal talks with the called terminal.  2. The method according to claim 1, wherein the gateway device receives an invitation request message from the calling terminal, and further includes:  The gateway device registers with the SIP server by using a preset switchboard identifier, and instructs the SIP server to configure a terminal corresponding to the switchboard identity to have a call transfer ECT function.  The method according to claim 2, wherein the gateway device transfers the call triggered by the invitation request message to the called terminal by using a SIP server according to the acquired extension identifier of the called terminal. , including:  And the gateway device uses the ECT function to transfer the call triggered by the invitation request message to the called terminal by using a SIP server according to the obtained extension identifier of the called terminal.  The method according to claim 3, wherein the gateway device uses the ECT function to forward the call triggered by the invitation request message by using the ECT function according to the acquired extension identifier of the called terminal. To the called terminal, including: Transmitting, by the gateway device, an information message including an extension identifier of the called terminal to the SIP server according to the obtained extension identifier of the called terminal, so that the SIP server transfers the call to the Call the terminal; or Sending, by the gateway device, an invitation request message including an extension identifier of the called terminal to the SIP server according to the obtained extension identifier of the called terminal, so that the SIP server transfers the call to the The called terminal.  The method according to any one of claims 1 to 4, wherein the SIP server comprises a next generation network NGN server or an IP multimedia subsystem IMS server.  6. A gateway device, comprising:  a receiving module, configured to receive an invitation request message from the calling terminal, where the invitation request message includes a preset switchboard identifier;  a prompting module, configured to send, according to the switchboard identifier, prompt information corresponding to the switchboard identifier to the calling terminal, to prompt the caller terminal to provide an extension identifier of the called terminal;  a transfer module, configured to transfer, by the session initiation protocol SIP server, the call triggered by the invitation request message to the called terminal according to the obtained extension identifier of the called terminal, so that the calling terminal and the The called terminal makes a call.  The gateway device according to claim 6, further comprising a registration module, configured to:  Registering with the SIP server by using a preset switchboard identifier, and instructing the SIP server to configure the terminal corresponding to the switchboard identity to have a call transfer ECT function.  The gateway device according to claim 7, wherein the transfer module is specifically used for  And using the ECT function, the call triggered by the invitation request message is transferred to the called terminal by using a SIP server according to the obtained extension identifier of the called terminal.  The gateway device according to claim 8, wherein the transfer module is configured to send, according to the obtained extension identifier of the called terminal, an extension identifier including the called terminal to the SIP server. Information message to cause the SIP server to transfer the call to the called terminal; or Sending, according to the obtained extension identifier of the called terminal, the SIP server, including the An invitation request message for the extension of the called terminal to cause the SIP server to transfer the call to the called terminal.  The gateway device according to any one of claims 6 to 9, wherein the SIP server comprises a next generation network NGN server or an IP multimedia subsystem IMS server. 11 . A switchboard business system, comprising: Calling terminal Called terminal  SIP server; and The gateway device of any of claims 6-10.