WO2013067775A1

WO2013067775A1 - Method and system for voice and data service fusion

Info

Publication number: WO2013067775A1
Application number: PCT/CN2012/070550
Authority: WO
Inventors: 梁西广; 冯德娟
Original assignee: 中兴通讯股份有限公司
Priority date: 2011-11-08
Filing date: 2012-01-18
Publication date: 2013-05-16
Also published as: CN102394995A; CN102394995B

Abstract

Provided is a method for voice and data service fusion, comprising the following steps: before a calling terminal and a called terminal exchange the voice or data service, the calling terminal sends a service request for service exchange to a calling access exchanger; the calling access exchanger determines the transmission channel for transmitting the service according to the service request, and establishes a corresponding transmission channel with a called access exchanger to which the called terminal belongs according to the type of the determined transmission channel; and the calling terminal and the called terminal utilize the transmission channel to exchange the service. A fusion system is also provided by the present invention. The present invention can resolve the problem of using confusion brought to the users for the voice service or the data service in the prior art that the service modes are non-unity and the operation modes are varieties.

Description

Fusion method and system for voice and data services

Technical field

The present invention relates to the field of communications technologies, and in particular, to a method and system for converging voice and data services. Background technique

In the traditional technology, voice services are generally carried by circuit paths, and data services are generally carried by message channels. The circuit path is the information path under the traditional time division multiplexing mechanism. It has the characteristics of exclusive access, low information transmission delay and high reliability. The message path is the information path under the storage and forwarding mechanism in the Internet. Sharing, information transmission delay, and poor reliability. The information is transmitted on the circuit path, and the transmitted information does not need to be packed, and can be streamed, because the two ends of the path correspond to the source and the sink, so no specific address indication is needed; and the message path is transmitted due to the characteristics of the channel sharing. The information needs to be packaged. The message must indicate the source and sink, and it cannot be expected that these packets can arrive at the sink in the order in which they are sent.

As the capacity and performance of transmission resources are greatly improved, the processing power of network nodes is continuously improved. Nowadays, the transmission delay of message channels is becoming smaller and smaller, and the reliability is getting higher and higher. Therefore, for some voice services, Message path bearer; Similarly, for some data services that require fast transmission, it can also be carried by the circuit path. For example, the telephone service in the voice service includes a service mode such as an IP phone and a traditional phone, and the information service in the data service includes an IP (Internet Protocol, a protocol interconnected by the network) instant messaging and a traditional short message communication service mode. Although this provides users with more choices on the one hand, due to different implementations, even IP phones and traditional phones that are both voice services are in operation, usage and user experience, even on the tariff method. They are all different. This can cause confusion for users. How to facilitate user operations, so that users can get a better business experience through a unified use or business request, which is a problem that needs to be solved currently. Summary of the invention

The technical problem to be solved by the present invention is to provide a method and system for converging voice and data services, so as to solve the voice service or data service of the prior art, the operation mode is not uniform, the usage mode is diversified, and the user is confused in use. problem.

The present invention solves the above technical problems by the following methods:

A method for merging voice and data services, the method comprising:

Before the calling terminal exchanges the service with the called terminal, the calling terminal sends a service request for the service exchange to the calling access switch;

The calling access switch determines to establish a transmission path for transmitting the service according to the service request, and establish a corresponding transmission path with the called access switch to which the called terminal belongs according to the determined type of the transmission path;

The calling terminal and the called terminal exchange the foregoing service by using the above transmission path.

In the above solution, the foregoing service request includes: a calling terminal identifier, a called terminal identifier, and identification information and parameter information of a service that the calling terminal and the called terminal need to exchange.

In the above solution, the parameter information includes: terminal capability parameter information, or a type of a transmission path selected by the calling terminal, and service tariff information, where the terminal capability parameter includes information of an Internet access function of the calling terminal.

In the above solution, before the calling access switch establishes a transmission path with the called access switch to which the called terminal belongs, the method further includes: the calling access switch according to the called terminal identifier included in the service request, Sending an audit request for reviewing the foregoing service to the called HSS (Home Subscriber Server) to which the called terminal belongs;

The called HSS retrieves the subscription data of the called terminal according to the called terminal identifier included in the audit request, and if the subscription data includes the service, the audit is passed, and the called party to which the called terminal belongs is accessed. The IP address of the switch is returned to the above-mentioned calling access switch. In the above solution, after the calling terminal sends a service request for the service exchange to the calling access switch, the method further includes:

The calling access switch notifies the calling HSS to perform the auditing of the legality of the calling terminal; the calling HSS according to the access location information of the calling terminal managed by the calling party, and the identification of the calling terminal and the service in the service request and The parameter information is used to determine the legality of the calling terminal by using the subscription data of the calling terminal that is saved by itself. If the subscription information includes the foregoing service, the calling HSS notifies the calling access switch to pass the audit, and the calling access switch according to the The service request determines that a transmission path for transmitting the service is established; otherwise, the calling HSS notifies the calling access switch that the audit fails, and the calling access switch notifies the calling terminal that the service fails, and the processing flow ends.

In the above solution, the foregoing establishing a transmission path with the called access switch to which the called terminal belongs includes:

The calling access switch sends a connection request for establishing a transmission path to the called access switch;

The called access switch receives and saves the connection request, and sends a service call message to the called terminal, where the service call message includes the calling terminal identifier and the identification information of the service;

The called terminal determines, according to the service call information, whether to agree to exchange the service with the calling terminal, and if yes, sends a service response message agreeing to the switched service to the called access switch;

After receiving the service response message, the called access switch establishes a corresponding transmission path with the calling access switch according to the type of the transmission path included in the connection request.

In the above solution, before the said terminal and the called terminal exchange the service by using the foregoing transmission path, the method further includes:

The called access switch sends a connection response message that the transmission channel has been established to the calling access switch; after receiving the connection response message, the calling access switch sends the connection request to the calling party. The terminal sends a service response message that the above service request has been accepted.

In the above solution, after the calling terminal and the called terminal exchange the service by using the transmission path, the method further includes: the calling terminal sending, to the calling access switch, an end request for ending the exchange of the service;

After receiving the foregoing end request, the calling access switch sends a release request for releasing the connected transmission path to the called access switch;

After receiving the release request, the called access switch notifies the called terminal to end the exchange of the service, and sends a release response message agreeing to release the connected transmission path to the calling access switch;

The calling access switch returns a binding response message for agreeing to end the exchange of the service to the calling terminal, and ends the exchange of the service.

In the above solution, when the method further includes the following terminal switching location, the calling terminal and the called terminal exchange the service by using the transmission path, including:

When the calling terminal or the called terminal switches the location, the step of continuously switching the service is specifically: when the called terminal switches the location, sending a handover request of the handover location to the newly called access switch;

The new called access switch notifies the information of the called terminal requesting the handover location to the corresponding old called access switch according to the address information of the old called access switch included in the handover request;

The old called access switch sends the information that agrees to the location of the called terminal to the newly called access switch, and forwards the service data sent by the calling access switch to the new called access switch;

The new called access switch notifies that the called terminal location handover is completed, and sends the received service data to the called terminal;

The called terminal terminates the service exchange with the old called access switch, and the newly generated industry The data is sent to the new called access switch;

The new called access switch forwards the received service data to the calling terminal through the old called access switch, and sends the new access location of the called terminal to the called HSS.

The invention also adopts the following technical solutions:

A converged system, comprising: a calling terminal, a called terminal, a calling access switch, and a called access switch;

The calling terminal is configured to send a service request for service switching to the calling access switch, and after the calling access switch and the called access switch establish a transmission path, before the voice or data service is exchanged with the called terminal. , exchanging services with the above called terminal;

The calling access switch is configured to determine, according to the service request sent by the calling terminal, a transmission path for transmitting the service, and connect with the called party to which the called terminal belongs according to the determined type of the transmission path. Entering the switch to establish a corresponding transmission path;

The called access switch is configured to establish a corresponding transmission path with the calling access switch, and the called terminal is configured to exchange services with the calling terminal.

In the above solution, the system further includes: a calling HSS, configured to save and manage access location information and subscription data of the calling terminal, and receive an audit notification sent by the calling access switch to perform legality of the calling terminal, Determining the legality of the calling terminal by using the subscription data of the calling terminal saved by the calling terminal, the identification information of the calling terminal, the identification information of the service, and the parameter information in the service request; Correspondingly, the calling access switch is specifically configured to perform the auditing notification of the legality of the calling terminal by combining the calling terminal identifier, the service identification information and the parameter information in the service request before sending the service request to the called HSS. Send to the calling HSS.

In the above solution, the system further includes: a called HSS, configured to save and manage access location information and subscription data of the called terminal, and receive an audit request of the audit service sent by the calling access switch, according to the auditing The called terminal identifier included in the request, and the called terminal is taken out The subscription data, if the subscription data includes the service, the audit is passed, and the IP address of the called access switch to which the called terminal belongs is returned to the calling access switch; correspondingly, the The calling access switch is further configured to send, according to the called terminal identifier included in the service request, an audit request for reviewing the service to the called HSS to which the called terminal belongs, and receive the returned by the called HSS. The IP address of the called access switch to which the called terminal belongs.

In the foregoing solution, the foregoing calling access switch or called access switch includes: an address requesting module, a transmission determining module, and a service control module:

The address requesting module is configured to request, from the calling HSS or the called HSS, access location information of the calling terminal or the called terminal;

The foregoing transmission decision module is configured to determine a type of a transmission path to be used for the transmission service; the service control module is configured to create a service control instance, and forward the received service data to the corresponding terminal.

Compared with the prior art, the present invention has the following beneficial technical effects: The present invention organically combines various service modes, circuit paths and message paths, identity and location identification, traditional telecommunication technology and modern Internet technologies in voice services or data services. Together, it realizes unified control and management of various business models, improves the level of business services, and brings a better experience for users, which can effectively promote the substantial progress of triple play. When users select a service, they use a unified user interface, and they don't care about the specific underlying implementation, and the user experience is improved. DRAWINGS

The drawings are intended to provide a further understanding of the present invention, and are intended to be a part of the invention. In the drawing:

1 is a flow chart of a method for fusing voice and data services in a preferred embodiment of the present invention; FIG. 2 is a flow chart of a method for terminating service switching in a preferred embodiment of the present invention; FIG. 3 is a terminal switching position in a preferred embodiment of the present invention; Method flow for business continuous exchange Cheng Tu

4 is a schematic diagram showing the composition of a fusion system in a preferred embodiment of the present invention. detailed description

The present invention will be further described in detail below with reference to the accompanying drawings and embodiments in order to make the present invention. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

1 is a flow chart of a method for fusing voice and data services in a preferred embodiment of the present invention. As shown in FIG. 1, a method of a preferred embodiment of the present invention includes:

Step S101: Before the calling terminal exchanges the service with the called terminal, the calling terminal sends a service request for the service exchange to the calling access switch.

The foregoing service request includes the identity of the calling terminal, the called terminal identifier, and the identification information and parameter information of the service that the calling terminal and the called terminal need to exchange. The parameter information is additional information provided by the terminal for call auditing, and different service parameters may be different according to the service. For example, the parameter information may be a terminal capability parameter (such as 3G/WIFI Internet access support capability), or may be a transmission selected by the calling terminal. Information such as access, business tariffs, etc.

After the calling terminal sends a service request for the service exchange to the calling access switch, the calling terminal may notify the calling HSS to perform the auditing of the legality of the calling terminal; the calling HSS is based on the calling terminal managed by the calling party. The access location information, and the calling terminal identifier, the service identification information, and the parameter information in the foregoing service request, determine the legality of the calling terminal by using the subscription data of the calling terminal that is saved by itself, if the subscription information includes the foregoing The service, the calling HSS notifies the calling access switch to pass the audit, and performs the step S102; otherwise, the calling HSS notifies the calling access switch that the audit fails, and the calling access switch notifies the calling terminal that the service fails, and the processing flow ends.

The above-mentioned calling HSS is used for storing and managing the access location information and the subscription data of the calling terminal. After the step S101 is completed, the calling access switch may be in accordance with the prior art according to the service. The parameter information determines the implementation mode adopted by the service request, and automatically establishes a transmission path type suitable for transmission for the calling terminal and the called terminal.

Step S102: The calling access switch sends an audit request for reviewing the foregoing service to the called HSS to which the called terminal belongs.

The foregoing audit request includes: the called terminal identifier and the identification information and parameter information of the service that the calling terminal and the called terminal need to exchange.

Step S103: The called HSS checks the legality of the service, and if the audit is passed, returns the access location information of the called terminal to the calling access switch, and performs step S104; otherwise, the processing flow ends.

The legality of the above mentioned HSS auditing the above services includes:

From the above-mentioned called terminal identifier included in the above-mentioned audit request, the contract data of the called terminal is taken out, and if the contract data contains the service, the audit is passed, otherwise the audit fails.

When the audit is passed, the called HSS returns the access location information of the called terminal, that is, the IP address of the called access switch to which the called terminal belongs, to the calling access switch, so that the calling access switch passes. Sending a request to the above-mentioned called access switch, and establishing a transmission path with each other, for transmitting services that need to be exchanged between the terminals. When the audit fails, the called HSS may also notify the above-mentioned calling access switch of the reason for the audit failure, or not process it.

Step S104: The calling access switch determines, according to the parameter information of the service, that a transmission path for transmitting the service is established, and sends a connection request for establishing the transmission path to the called access switch.

The connection request includes the calling terminal identifier, the called terminal identifier, the identification information of the service, and the type of the transmission path selected by the calling access switch.

The foregoing determining the transmission path for transmitting the foregoing service may be: determining a corresponding information path according to the identification information of the service, for example: a voice call, a short message, a video phone adopting a circuit path, an IP phone, an IM, and the like adopting a message path; It can also be: According to other business parameters such as The terminal capability parameters or service tariffs are comprehensively determined.

Step S105: The called access switch receives and saves the connection request, and sends a service call message to the called terminal.

After receiving the connection request, the called access switch saves the content of the connection request, and determines whether the called terminal is idle. If idle, sends a service call message to the called terminal. If not, the processing ends. Process.

The foregoing service call message includes the foregoing calling terminal identifier and the identification information of the service. Further, after the called terminal receives the service call message, the called terminal can grasp the identity information of the calling terminal according to the calling terminal identifier, and determine whether to accept the service sent by the called terminal.

Step S106: The called terminal determines whether it agrees to exchange the service, and if yes, sends a service response message that agrees to the exchange service to the called access switch, and performs step 107; if not, the process ends.

Step S107: After receiving the service response message, the called access switch establishes the transmission path with the calling access switch, and sends a connection response message that the transmission path has been established to the calling access switch.

Step S108: After receiving the connection response message, the calling access switch sends a service response message that the service request has been accepted to the calling terminal.

Step S109: After receiving the service response message, the calling terminal exchanges service data with the called terminal through the transmission path established by the calling access switch and the called access switch.

After the step S109 is completed, the calling terminal and the called terminal may request to terminate the service exchange in the process of service switching. The following is an example in which the calling terminal requests to end the service switching, and the service ends. Process.

2 is a flow chart of a method for a calling terminal to end a service exchange in a preferred embodiment of the present invention. As shown in FIG. 2, the calling terminal ends the service exchange, including the following steps: Step S201: The calling terminal sends an end request for ending the exchange service to the calling access switch.

Step S202: After receiving the foregoing end request, the calling access switch sends a release request for releasing the connected transmission path to the called access switch.

Step S203: After receiving the release request, the called access switch sends a service end message to the called terminal, informing it to end the service exchange.

Step S204: After receiving the service end message, the called terminal ends the service switching, and sends a service completion message to the called access switch.

Step S205: After receiving the service completion message, the called access switch sends a release response message agreeing to release the connected transmission path to the calling access switch, and ends the service exchange.

Step S206: The calling access switch returns an end response message for agreeing to end the exchange of the service to the calling terminal, and ends the exchange of the service.

Step S207: The calling terminal terminates the service exchange.

In the foregoing steps S205 to S207, ending the service exchange includes releasing all resources of the service exchange by the terminal or the switch.

In addition, in step S109, in the process of the service exchange, the calling terminal and the called terminal can ensure the calling terminal and the called terminal if the calling terminal or the called terminal has a location switch. The business is continuously exchanged.

3 is a flow chart of a method for continuously exchanging traffic when a called terminal switches a location in a preferred embodiment of the present invention. As shown in Figure 3, the method of continuous service exchange includes:

Step S301: When the called terminal switches the location, the location switch handover request is sent to the newly called access switch.

Specifically, when the location of the called terminal is switched, and the old called access switch is switched to the newly called access switch, the called terminal sends the new called access switch to ensure the continuous exchange of services. The handover request of the location switch notifies the newly called access switch to receive the service from the old called access switch.

The above handover request includes: address information of the old called access switch and the type of the transmission path for transmitting the service.

Step S302: The newly called access switch sends a handover request message to the corresponding old called access switch according to the address information of the old called access switch included in the handover request.

The above handover request message includes: a type of the above transmission path for transmitting a service.

Step S303: After receiving the handover request message, the old called access switch establishes the information path with the newly called access switch, and sends a handover agreement to the terminal handover location to agree to cancel the received by the old called access switch. After the foregoing handover request message, the new access address of the called terminal, that is, the IP address of the newly called access switch, may be sent to the calling access switch, so that the service whose message sequence is not critical is thereafter The service data can be directly exchanged between the calling access switch and the newly called access switch, and no longer need to be transferred by the old called access switch;

After receiving the handover request message, the old called access switch may also send a stop content message to the called terminal, and indicate to the called terminal that the called access switch no longer sends the service data to the called terminal. It is the new access location sent to the called terminal, that is, the newly called access switch.

Step S304: After receiving the handover consent message, the newly called access switch receives the service data from the old called access switch and sends the service data to the called terminal, and simultaneously informs the called terminal that the location switching is completed.

Through the above steps, the service data received by the old called access switch can be transmitted to the called terminal through the newly called access switch, thereby realizing the continuous transmission of the service from the calling terminal to the called terminal during the handover process.

Step S305: The called terminal sends a handover end message to the old called access switch. The new service data is sent to the new called access switch.

When the old called access switch receives the handover end message, it can cooperate with the called terminal to release resources related to the current service, and the old called terminal no longer receives data from the called terminal.

Step S306: The new called access switch sends new service data to the old called access switch, and sends the new access location of the called terminal to the called HSS.

When the new called access switch receives the service data sent by the called terminal, it needs to be forwarded by the old called access switch, and the transmission path established before the old called access switch and the calling access switch will The service data layer is sent to the calling terminal. At this point, the business switching process is completed. During the handover process, there is no problem of loss, duplication, or out of order of service information, that is, the continuity of the service is guaranteed.

When the above transmission path is a circuit path, the above switching consent message and the switching end message are all transmitted along the corresponding circuit path. In order to give the corresponding network elements ample time to process these messages, it is also possible to insert a number of padding frames after these messages.

Step S307: The called HSS updates the access location of the called terminal, and notifies that the location update of the new called access switch is completed.

The called HSS can update the access location of the called terminal. When the next time the switch asks the access location of the called terminal, the new access location of the called terminal can be notified to the switch, so that the service exchange does not have to be handed over. The old called switch relays the message.

4 is a schematic diagram of the composition of a fusion system according to a preferred embodiment of the present invention. As shown in FIG. 4, the system of the above preferred embodiment includes: a calling terminal 41, a called terminal 42, a calling access switch 43, and a called access. Switch 44; wherein

The calling terminal 41 is configured to send a service request for service switching to the calling access switch 43 before exchanging voice or data service with the called terminal 42, and at the calling access switch 43 and the called access switch 44. After the transmission path is established, the service is exchanged with the called terminal 42; The calling access switch 43 is configured to determine, according to the foregoing service request sent by the calling terminal 41, a transmission path for transmitting the service, and according to the determined type of the transmission path, connect with the called party to which the called terminal belongs. The ingress switch 44 establishes a corresponding transmission path;

The called access switch 44 is configured to establish a corresponding transmission path with the calling access switch 43; the called terminal 42 is configured to exchange services with the calling terminal 41.

The system further includes: a calling HSS 45, configured to store and manage access location information and subscription data of the calling terminal, and receive an audit notification sent by the calling access switch 43 to perform legality of the calling terminal, according to the The access location information of the managed calling terminal, the identification of the calling terminal in the service request, the identification information of the service, and the parameter information, and determining the legality of the calling terminal by using the subscription data of the calling terminal saved by itself; If the subscription information includes the foregoing service, the calling HSS notifies the calling access switch 43 to pass the verification. Otherwise, the calling access switch 43 is notified that the audit fails. Correspondingly, the calling access switch 43 is specifically used to call the called party. Before sending the service request, the HSS sends a call notification of the calling terminal identifier, the service identification information and the parameter information in the service request to the calling party HSS 45, and receives the audit report returned by the calling HSS 45 or A notification that the review failed.

The system further includes: a called HSS 46, configured to store and manage access location information and subscription data of the called terminal, and receive an audit request for the audit service sent by the calling access switch 43; correspondingly, the main The access switch 43 is also used to send an audit request for the audit service to the called HSS 46 to which the called terminal 42 belongs.

The above-mentioned called HSS 46 is further configured to review the legality of the service according to the audit request of the audit service, and if the audit is passed, return the access location information of the called terminal to the calling access switch 43; otherwise, the end Correspondingly, the calling access switch 43 is specifically configured to receive the access location information of the called terminal sent by the called HSS 46.

The calling access switch 43 is specifically configured to determine, according to the parameter information of the service in the service request, a transmission path established for transmitting the foregoing service, and send and establish the transmission path to the called access switch 44. The connection request of the foregoing transmission path; correspondingly, the called access switch 44 is specifically configured to receive and save the connection request sent by the calling access switch 43.

The called access switch 44 is configured to save the content of the connection request after receiving the connection request, and determine whether the called terminal 42 is idle. If idle, send a service call message to the called terminal 42. If not idle, the operation flow is ended;

Correspondingly, the called terminal 42 is further configured to: after receiving the service call message sent by the called access switch 44, determine whether to agree to exchange the service, and if yes, send a service response message agreeing to the exchange service to the foregoing The access switch 44 is called, and if it does not agree, the operation flow is ended.

The called access switch 44 is configured to: after receiving the service response message, establish a transmission path with the calling access switch 43, and send a connection response message that the transmission path has been established to the calling access switch 43; Correspondingly, the calling access switch 43 is specifically configured to: after receiving the connection response message sent by the called access switch 44, send a service response message that the service request has been accepted to the calling terminal 41; The terminal 41 is specifically configured to exchange service data with the called terminal through the transmission path established by the calling access switch and the called access switch after receiving the service response message sent by the calling access switch 43.

The above-mentioned calling access switch 43 or called access switch 44 further includes: an address requesting module, a transmission decision module and a service control module: wherein

The foregoing transmission decision module is configured to determine a type of a transmission path to be used for the transmission service. The service control module is configured to create a service control instance, and forward the received service data to the corresponding terminal.

The terminal, including the calling terminal 41 and the called terminal 42, can be connected through an access network and an access switch. The calling access switch 43 and the called access switch 44 can assume the functions of a VLR (Visitor Location Register) and FA in the existing communication network. A call control function is also provided to implement management of the communication session, including establishing a circuit path or a packet path required for exchanging service content, thereby implementing necessary voice relay, message forwarding, and necessary buffering. Of course, the access switch can also cooperate with the HSS to implement location update of the mobile terminal and possible IP address change notification.

The above description shows and describes a preferred embodiment of the present invention, but as described above, it should be understood that the present invention is not limited to the form disclosed herein, and should not be construed as being Other combinations, modifications, and environments are possible and can be modified by the teachings of the above teachings or related art within the scope of the inventive concept described herein. All changes and modifications made by those skilled in the art are intended to be within the scope of the appended claims.

Claims

Claim

A method for converging voice and data services, the method comprising: before the calling terminal and the called terminal exchange voice or data services, the calling terminal sends a service exchange to the calling access switch. Business request

Determining, by the calling access switch, a transmission path for transmitting the service according to the service request, and establishing, according to the determined type of the transmission path, a called access switch to which the called terminal belongs Transmission path

The calling terminal and the called terminal exchange the service by using the transmission path.

The method according to claim 1, wherein the service request includes: a calling terminal identifier, a called terminal identifier, and identification information of a service that the calling terminal and the called terminal need to exchange Parameter information.

The method according to claim 2, wherein the parameter information comprises: terminal capability parameter information, or a type of a transmission path selected by the calling terminal, and service tariff information, where the terminal capability parameter includes The information that the calling terminal has the Internet access function.

The method according to claim 1, wherein the method further includes: before the establishing a transmission path with the called access switch to which the called terminal belongs, the method further includes:

And the calling access switch sends an audit request for reviewing the service to the called home subscriber server HSS to which the called terminal belongs according to the called terminal identifier included in the service request;

The called HSS retrieves the subscription data of the called terminal according to the called terminal identifier included in the audit request, and if the subscription data includes the service, the audit is passed, and the called party is called The IP address of the called access switch to which the terminal belongs is returned to the calling access switch.

The method according to claim 1, wherein after the calling terminal sends a service request for the service exchange to the calling access switch, the method further includes: The calling access switch notifies the calling HSS to perform the auditing of the legality of the calling terminal; the calling HSS according to the access location information of the calling terminal managed by the calling party, and the identification of the calling terminal and the service in the service request and The parameter information is used to determine the legality of the calling terminal by using the subscription data of the calling terminal that is saved by itself. If the subscription information includes the foregoing service, the calling HSS notifies the calling access switch to pass the audit, and the calling access switch according to the The service request determines that a transmission path for transmitting the service is established; otherwise, the calling HSS notifies the calling access switch that the audit fails, and the calling access switch notifies the calling terminal that the service fails, and the processing flow ends.

The method according to claim 1 or 4, wherein the establishing a transmission path with the called access switch to which the called terminal belongs includes:

The called terminal determines, according to the service call information, whether to agree to exchange the service with the calling terminal, and if yes, sends a service response message agreeing to the exchange service to the called access switch;

The method according to claim 1, wherein before the calling terminal and the called terminal exchange the service by using the transmission path, the method further includes:

The called access switch sends a connection response message that the transmission channel has been established to the calling access switch;

After receiving the connection response message, the calling access switch sends a service response message that the service request has been accepted to the calling terminal.

The method according to claim 7, wherein after the calling terminal and the called terminal exchange the service by using the transmission path, the method further includes:

And the calling terminal sends an end request to the calling access switch to end the exchange of the service;

After receiving the end request, the calling access switch sends a release request for releasing the connected transmission path to the called access switch;

The calling access switch returns to the calling terminal a binding response message agreeing to end the exchange of the service, and ends the exchange of the service.

The method according to claim 1, wherein the calling terminal and the called terminal exchange the service by using the transmission path, including:

And the newly called access switch notifies the information of the called terminal requesting the handover location to the corresponding old called access switch according to the address information of the old called access switch included in the handover request;

The old called access switch sends information that agrees to the called terminal handover location to the newly called access switch, and forwards the service data sent by the calling access switch to the new called party. Access switch

The newly called access switch notifies the called terminal that the location handover is completed, and sends the received service data to the called terminal;

The called terminal ends the service exchange with the old called access switch, and the newly generated industry The service data is sent to the new called access switch;

The newly called access switch forwards the received service data to the calling terminal through the old called access switch, and sends the new access location of the called terminal to the called HSS. .

A converged system, the system comprising: a calling terminal, a called terminal, a calling access switch, and a called access switch;

a calling terminal, configured to send a service request for service switching to the calling access switch before the voice or data service is exchanged with the called terminal, and establish a transmission path between the calling access switch and the called access switch Afterwards, exchanging services with the called terminal;

a calling access switch, configured to determine, according to the service request sent by the calling terminal, a transmission path established for transmitting the service, and according to the type of the determined transmission path, with the called terminal Calling the access switch to establish a corresponding transmission path;

The system according to claim 10, wherein the system further comprises: a calling HSS, configured to store and manage access location information and subscription data of the calling terminal, and receive the calling access switch. The auditing notification of the legality of the calling terminal is performed according to the access location information of the calling terminal managed by itself, the calling terminal identifier in the service request, the identification information of the service, and the parameter information, and the calling terminal saved by itself is used. The contract data determines the legality of the calling terminal;

Correspondingly, the calling access switch is specifically configured to perform the auditing notification of the legality of the calling terminal by combining the calling terminal identifier, the service identification information and the parameter information in the service request before sending the service request to the called HSS. Send to the calling HSS.

The system according to claim 11, wherein the system further comprises: a called HSS, configured to save and manage access location information and subscription data of the called terminal, and receive the call from the calling access switch. Review request for review business, according to the review request package The called terminal identifier is included, and the subscription data of the called terminal is taken out. If the subscription data includes the service, the audit is passed, and the called terminal to which the called terminal belongs is connected to the switch.

The IP address is returned to the calling access switch;

Correspondingly, the calling access switch is further configured to send, according to the called terminal identifier included in the service request, an audit request for reviewing the service to the called HSS to which the called terminal belongs, and receive the called party. The IP address of the called access switch to which the called terminal belongs, returned by the HSS.

The system according to claim 12, wherein the calling access switch or the called access switch comprises: an address requesting module, a transmission determining module, and a service control module: the address requesting module, Requesting access location information of the calling terminal or the called terminal to the calling HSS or the called HSS;

The transmission decision module is configured to determine a type of a transmission path to be used for the transmission service; the service control module is configured to create a service control instance, and forward the received service data to the corresponding terminal.