CN101277342A - Method, apparatus and system for implementing fork service - Google Patents
Method, apparatus and system for implementing fork service Download PDFInfo
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- CN101277342A CN101277342A CNA2007100895327A CN200710089532A CN101277342A CN 101277342 A CN101277342 A CN 101277342A CN A2007100895327 A CNA2007100895327 A CN A2007100895327A CN 200710089532 A CN200710089532 A CN 200710089532A CN 101277342 A CN101277342 A CN 101277342A
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Abstract
The invention provides a method, device and system for realizing division service, wherein the method comprises: firstly an application server obtains address information of universal personal telecommunication (UPT) subscriber terminal via an IMS service control interface, the application server receives call request to be sent to the UPT subscriber terminal, and selects appropriate terminal to launch call request according to subscriber settings and terminal capability and indicate terminal address information in the call request; a call session control function entity forwards the call request to the terminal according to obtained address information; when the called terminal has no response for a long time, a call forwarding service in the application server is triggered; then the call session control function entity can forward the call request to another terminal according to another terminal address information obtained from identical IMPU to establish session between the calling terminal and the called terminal, in order to realize sequentially calling service for the UPT subscriber.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of method, Apparatus and system of realizing fork service.
Background technology
IMS (IP Multimedia Subsystem) is an IP Multimedia System, is a kind of brand-new multimedia service form, and it can satisfy, and present terminal client is more novel, the demand of more diversified multimedia service.At present, IMS is considered to the core technology of next generation network, also is that ideal scheme and the developing direction that merges with fixed network moved in the solution that industry is generally admitted.
Call Forwarding services are a more basic business in the value-added service of conventional telecommunication network, professional content comprise according to called state (as hurry/nobody replys etc.) destination address is transferred in a call.And in the IMS network, session is triggered on the application server (AS:Application Server) by the user is signatory, thus provide various abundant value-added services by application server for the user, for example forward-shifting service also claims intelligent route.
Be illustrated in figure 1 as the flow process of changeing before the IMS calling network no response order, omitted other Temporary Response of IMS network among the figure.The main thought of this method is: when a terminal B is called out, the long-time no response of this terminal B, according to pre-configured rule, with this Call Forwarding to terminal C, the original request that is sent to terminal B of application server cancellation simultaneously, and initiate new request to terminal C, thereby final caller and terminal C set up session.Concrete steps are as follows:
Step 11: application server is received the call request (Invite B) that mails to terminal B;
Step 12: call conversation control function entity is according to preestablishing forwarding conversation request (InviteContact B);
Step 13: after call request successfully arrived called (terminal B), called 180 rings (Invite180) Temporary Response that returns was as replying;
When the long-time no response of terminal B, forward-shifting service is triggered, and then according to pre-configured rule, for example Call Forwarding Unconditional, Call Forwarding No Reply and divert when busy etc. will go to terminal C before this call request, and concrete steps are as follows:
Step 14: when called (terminal B) off-hook not for a long time, then forward-shifting service triggers, and application server sends the Cancel request, is used to cancel the call request that mails to terminal B;
Step 15: terminal B returns Cancel200, and sends replying of Invite487 conditional code simultaneously;
Step 16: the Invite487 message of application server to receiving, send and reply (ACK) as confirming;
Step 17: application server is initiated new call request (Invite C), and the address of indicating terminal C (Contact C) therein;
Step 18: call conversation control function entity continues forwarding conversation request (Invite Contact C) according to the address of application server selection terminal C;
Step 19: after call request successfully arrived called (terminal C), the called Invite of returning 180 (180 ring) Temporary Response was as replying;
Step 20: when called (terminal C) accepted call request (Invite C), terminal C returned Invite200 and replys to caller, and caller is sent out and replied (ACK) as affirmation, thereby caller and terminal C set up session.
From the above, forward-shifting service can allow the user to set a plurality of called numbers, when the user is called out, can be according to preset rule, for example Call Forwarding Unconditional, Call Forwarding No Reply and divert when busy etc., to be given to different called numbers before the call request, thus to the user provide convenience, session services efficiently, guarantee the promptness of conversation.
In the IMS network, use the signaling control protocol of session initiation protocol (SIP:Session Initiation Protocol) as IP multimedia session, and this agreement has the function of bifurcated (Forking), be that server can be transmitted a request by bifurcated, thereby realize a request message is routed to a plurality of destinations, and echo reply message will be distinguished in these a plurality of destinations, and promptly a plurality of destinations all ask for one correspondingly to handle according to receiving normally.
Specifically, the bifurcated function be meant when multimachine user terminal when called, the ability of the corresponding a plurality of terminals of network based called number and the setting of calling and called terminal, the session that continues of the terminal called that can select to be fit to wherein can be divided into shaking and two kinds of CSCs.In one number service, when the user dialed one number service number initiation call request, soft switch was with this call redirection application server, and application server obtains relevant user data according to called number: shake or CSC together, and the switching directory.Application server will be provided with according to the user, simultaneously to make a call with vibration numbers or in a certain order, certain time interval carries out CSC to the directory that is provided with.The continue of calling out all will be through application server, and application server is made corresponding processing according to feedback message.
Only illustrate below, be illustrated in figure 2 as the order bifurcated flow process of IMS network, omitted other Temporary Response of IMS network among the figure with sequential ringing service.The main thought of this method is: call conversation control function entity is received the call request that mails to a multimachine user terminal, according to the preferential selection terminal of being provided with of user B, when the long-time no response of terminal B, call conversation control function entity is selected another terminal C of called number correspondence, initiate a new call request to terminal C, thereby final caller and terminal C set up session, and concrete steps are as follows:
Step 21: application server is received the call request (InviteB) that mails to a multimachine user terminal;
Step 22: after call conversation control function entity received call request, the terminal of selecting to be fit to according to user's setting and terminal capability sent call request (Invite Contact B);
Step 23: after call request successfully arrived called (terminal B), called 180 rings (Invite180) Temporary Response that returns was as replying;
When the long-time no response of terminal B, conversation control function entity bifurcated function is triggered, the ability of the corresponding a plurality of terminals of the network based called number of IMS and calling and called user's setting, select same IMPU (IMS Public Identity, the IMS public subscriber identification, be similar to the number of plain old telephone) corresponding another terminal called C session that continues, concrete steps are as follows:
Step 24: when called (terminal B) off-hook not for a long time, call conversation control function entity Forking is professional to be triggered, and call conversation control function entity sends the Cancel request, is used to cancel the call request that mails to terminal B;
Step 25: terminal B returns Cancel200, and sends replying of Invite487 conditional code simultaneously;
Step 26: call conversation control function entity is received Invite487 message, sends and replys (ACK) as confirming;
Step 27: call conversation control function entity is initiated new call request (Invite ContactC), and the address of indicating terminal C (Contact C) therein;
Step 28: after call request successfully arrived called (terminal C), the called Invite of returning 180 (180 ring) Temporary Response was as replying;
Step 29: when called (terminal C) accepted call request (Invite Contact C), terminal C returned Invite200 and replys to caller, and caller is sent out and replied (ACK) as affirmation, thereby caller and terminal C set up session.
When implementing the invention process, find that there is following problem in prior art: the sequential ringing service of a multimachine user terminal can be realized by the bifurcated ability of IMS network in the IMS network, but necessarily require in the IMS network each network element all to support the bifurcated ability, otherwise need the user that the IMS network is transformed, make can't the apply in a flexible way bifurcated ability of IMS network of user.
Summary of the invention
The embodiment of the invention provides a kind of method, Apparatus and system that utilizes the forward-shifting service realization bifurcated ability of application server.
The purpose of the embodiment of the invention is achieved through the following technical solutions:
A kind of method that realizes fork service said method comprising the steps of:
The call request that mails to a multimachine user terminal that application server receives, select the terminal request of making a call according to preestablishing, and in described call request, indicate described application server to obtain the address information of described terminal by IMS service control;
Call conversation control function entity selects the address information of described terminal to transmit described call request according to the indication of application server;
If described terminal is off-hook not for a long time, then described application server triggers forward-shifting service, selects another terminal of a multimachine user to initiate described call request according to described preestablishing, and described another terminal address information that indication is obtained in described request.
The technical scheme that is provided by the invention described above embodiment as can be seen, by change to application server and call conversation control function entity in the IMS network, make the application server after the improvement obtain terminal address information by the professional control of IMS (ISC:IMS Serving Control) interface, after the forward-shifting service of application server triggers, call conversation control function entity can be according to this address information another terminal that is transmitted to same IMPU with call request, realize the bifurcated ability of IMS network, thereby the multimachine user terminal provides sequential ringing service not needing on the basis that the IMS network is transformed for No. one, has increased the range of application of the bifurcated ability of IMS network.
Description of drawings
Fig. 1 is the preceding flow chart that changes of existing IMS calling network no response order;
Fig. 2 is the flow chart of the bifurcated ability of existing IMS network;
Fig. 3 obtains the flow chart of terminal address information by ISC interface for embodiment of the invention application server;
Fig. 4 realizes the flow chart of bifurcated ability by the forward-shifting service of application server for the embodiment of the invention;
Fig. 5 is an embodiment of the invention application server structural representation.
Embodiment
The embodiment of the invention is obtained the address information of a multimachine user terminal by ISC interface for application server in the IMS network, call conversation control function entity is transmitted to terminal according to the described address information of obtaining with call request, when called long-time nothing responds, the forward-shifting service of application server triggers, at this moment, call conversation control function entity can be according to another terminal address information of the same IMPU that obtains (IMS public subscriber identification), call request is transmitted to another terminal, make caller and called (another terminal) set up session, also just realized the sequential ringing service of a multimachine user terminal.
After the described address information of obtaining a multimachine user terminal, trigger the order of described call request and can initiate described call request according to the terminal that user's setting and terminal capability are selected to be fit to.Wherein, described user's setting can comprise: address domain information (for example: company, family, bedroom, parlor etc.), state (for example: meet busy, shutdown etc.), time, caller etc.; Described terminal capability comprises: media capability (for example: voice, video, fax etc.), medium encoding and decoding etc.
Below in conjunction with the specific embodiment of the invention accompanying drawing the present invention is elaborated.
The described forward-shifting service by application server of the embodiment of the invention is realized the method for bifurcated ability, and its embodiment can be divided into that application server obtains terminal address information by ISC interface and application server is realized two processes of bifurcated ability according to the terminal address that obtains by forward-shifting service; ,
As shown in Figure 3, for embodiment of the invention application server obtains the flow chart of terminal address information by ISC interface, concrete steps are as follows:
Step 31: one of them terminal of a multimachine user terminal is initiated register requirement (Register) to IMS core net (IMS Core); If registration failure returns response 401, expression without permission; If succeed in registration, then return response 200, expression is succeeded in registration;
Log-on message comprises the address information of terminal, also can comprise user's setting and terminal ability information;
In order to make application server can obtain the address information of terminal by IMS service control, can initiate the third-party registration request according to initial filter criteria (IFC:Initial Filter Criteria), concrete steps are as follows:
Step 32: initiate third-party registration request (Register) by the IMS core net to application server, the described address information from the register requirement terminal to IMS Core that initiate of portability in request;
Step 33: application server is initiated user registration state to described call conversation control function entity and is subscribed to (Subscribe); If in register requirement, there is not the address information of carried terminal, should in circular (Notify), carry described address information so.
Can obtain terminal address information by the above-mentioned steps application server, and when called for a long time not during off-hook, call conversation control function entity can be transmitted another terminal that same IMPU is given in described call request according to the terminal address information that obtains.
As shown in Figure 4, be the flow chart of the embodiment of the invention by forward-shifting service realization bifurcated ability, concrete steps are as follows:
Step 41: application server is received the call request (InviteB) that mails to a multimachine user terminal, initiate call request according to the terminal that the setting and the terminal capability of described user terminal are selected to be fit to, and the address of terminal of the described selection of indication in described call request, for example can select terminal B, then in described call request the address of carried terminal B (Contact B);
Step 42: call conversation control function entity continues forwarding conversation request (Invite Contact B) according to the address of the indication selection terminal B of application server;
Step 43: after call request successfully arrived called (terminal B), called 180 rings (Invite180) Temporary Response that returns was as replying;
When the long-time no response of terminal B, terminal B is then according to pre-configured rule, and for example Call Forwarding Unconditional, Call Forwarding No Reply and divert when busy etc. will go to another terminal of same IMPU before this call request, terminal C for example, and concrete steps are as follows:
Step 44: when called (terminal B) off-hook not for a long time, the forward-shifting service of application server triggers, and application server sends the Cancel request, is used to cancel the described call request that mails to terminal B;
Step 45: terminal B returns Cancel200, and sends replying of Invite487 conditional code simultaneously;
Step 46: after application server is received Invite487 message, send and reply (ACK) as confirming;
Step 47: application server is initiated new call request (Invite B), and the address of another terminal of the same IMPU of indication in call request is as the address (Contact C) of terminal C;
In the multimachine user terminal of IMS network, terminal B is different with terminal C corresponding address (Contact), but IMS public subscriber identification (IMPU) corresponding in this call request (Invite) is identical, the same IMPU of similar use, be all Invite B, therefore, mail to the call request of terminal B in cancellation after, select to have another terminal of identical IMPU as called.Described terminal with identical IMPU can comprise a plurality of, can select as called terminal according to the calling sequence that sets in advance.
Step 48: call conversation control function entity continues forwarding conversation request (Invite Contact C) and gives terminal C according to the address of application server selection terminal C;
Step 49: after call request successfully arrived called (terminal C), the called Invite of returning 180 (180 ring) Temporary Response was as replying;
Step 50: when called (terminal C) accepted call request (Invite C), terminal C returned Invite200 and replys to caller, and caller is sent out and replied (ACK) as affirmation, thereby caller and terminal C set up session.
By said method as can be known, in embodiments of the present invention, improvement by application server, make it obtain terminal address information by IMS service control, and use the be transmitted to terminal called of this address information with call request by the forward-shifting service of application server, realize the bifurcated ability of IMS network, thereby do not needing on the basis that the IMS network is transformed, for a multimachine user terminal of IMS network provides sequential ringing service, increased the range of application of the bifurcated ability of IMS network.
The embodiment of the invention provides a kind of system that realizes fork service, comprising: application server, call conversation control function entity and an a plurality of multimachine user terminal;
Described application server is used to receive the call request that mails to a multimachine user terminal, and initiates call request according to the terminal that setting is in advance selected to be fit to, and indication is obtained terminal address information by ISC interface in described request;
As shown in Figure 5, be embodiment of the invention application server structural representation, described application server comprises:
The address information acquisition module is used for obtaining described terminal address information by ISC interface from the call request that mails to a multimachine user terminal that receives;
Terminal called is selected module, and the terminal that is used for selecting a described multimachine user according to the setting and the terminal capability of a multimachine user terminal initiates to carry the call request of the described terminal address information of obtaining;
The forward-shifting service trigger module is used for for a long time not under the off-hook condition, triggering forward-shifting service at current terminal called, notifies described terminal called to select module to reselect terminal called, issues the call request indication of the current terminal of cancellation.
The Call Canceled module after being used to receive the indication of described forward-shifting service trigger module transmission, sends call request cancellation message to described terminal, cancels described call request.
Described call conversation control function entity comprises, the conversation forwarding module is used for transmitting described call request according to the terminal address information that application server is indicated in described call request;
A described multimachine user terminal comprises conversation initiator and recipient, and set in advance the forward-shifting service logic in a described multimachine user terminal, in case of busy/nobody replys etc., will go to another terminal of same IMPU before the described call request.
In sum, by change to application server and call conversation control function entity in the IMS network, make application server obtain the address information of terminal by IMS service control, after the forward-shifting service of application server triggers, call conversation control function entity can be according to this address information another terminal that is transmitted to same IMPU with call request, realize the bifurcated ability of IMS network, thereby a multimachine user terminal for the IMS network provides sequential ringing service on the basis that the IMS network is transformed not needing, and has increased the range of application of the bifurcated ability of IMS network.
Among the invention described above embodiment, the technical scheme that sequential ringing service is provided for the user by the forward-shifting service of application server only is provided, and and vibration business in, the method for obtaining terminal address in the method that application server obtains terminal address information and the sequential ringing service is identical.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (10)
1. a method that realizes fork service is characterized in that, said method comprising the steps of:
The call request that mails to a multimachine user terminal that application server receives, select the terminal request of making a call according to preestablishing, and in described call request, indicate described application server to obtain the address information of described terminal by IMS service control;
Call conversation control function entity selects the address information of described terminal to transmit described call request according to the indication of application server;
If described terminal is off-hook not for a long time, then described application server triggers forward-shifting service, selects another terminal of a multimachine user to initiate described call request according to described preestablishing, and described another terminal address information that indication is obtained in described request.
2. a kind of method that realizes fork service according to claim 1 is characterized in that described preestablishing comprises: user's setting and terminal capability.
3. a kind of method that realizes fork service according to claim 1 and 2 is characterized in that described application server comprises by the method that IMS service control obtains terminal address information:
Terminal in multimachine user terminal is initiated registration to the IMS core net, comprises terminal address information in the log-on message;
Described IMS core net is initiated the third-party registration request according to initial filter criteria to application server;
Application server judges whether carry described terminal address information in the described third-party registration request, if having, described application server obtains described terminal address information from described third-party registration request;
Otherwise described application server obtains described terminal address information from described IMS core net to the circular information that described application server sends.
4. a kind of method that realizes fork service according to claim 1 is characterized in that described application server is before another terminal is initiated described call request, and described method also comprises:
Described application server is initiated cancellation call request message to last terminal.
5. a kind of method that realizes fork service according to claim 1 is characterized in that, the terminal that described application server is selected has same IMPU.
6. an application server is characterized in that, comprising:
The address information acquisition module is used for obtaining terminal address information by IMS service control;
Terminal called is selected module, and the terminal that is used for selecting a described multimachine user according to the setting and the terminal capability of a multimachine user terminal initiates to carry the call request of the described terminal address information of obtaining;
The forward-shifting service trigger module is used for for a long time not under the off-hook condition, triggering forward-shifting service at current terminal called, notifies described terminal called to select module to reselect terminal called, issues the call request indication of the current terminal of cancellation.
7. a kind of application server according to claim 6 is characterized in that, also comprises:
The Call Canceled module is used to receive the cancellation call request indication of described forward-shifting service trigger module, sends cancellation call request message to described terminal.
8. a call conversation control function entity is characterized in that, comprising:
The conversation forwarding module is used for transmitting described call request according to the terminal address information that application server is indicated in described call request.
9. a system that realizes fork service is characterized in that, described system comprises:
Application server, be used to receive the call request that mails to a multimachine user terminal, and initiate call request according to preestablishing selection to the terminal that is fit to, and the described application server of indication obtains the address information of described terminal by IMS service control in described call request;
Call conversation control function entity is used for sending the described call request of forwarding according to the described terminal address information of described application server indication to the terminal of described address information correspondence.
10. a kind of system that realizes fork service according to claim 9 is characterized in that described application server comprises:
The address information acquisition module is used for obtaining terminal address information by IMS service control;
Terminal called is selected module, and the terminal that is used for selecting a described multimachine user according to the setting and the terminal capability of a multimachine user terminal initiates to carry the call request of the described terminal address information of obtaining;
The forward-shifting service trigger module is used for for a long time not under the off-hook condition, triggering forward-shifting service at current terminal called, notifies described terminal called to select module to reselect terminal called, issues the call request indication of the current terminal of cancellation.
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| CN2007100895327A CN101277342B (en) | 2007-03-27 | 2007-03-27 | Method, apparatus and system for implementing fork service |
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| CN2007100895327A CN101277342B (en) | 2007-03-27 | 2007-03-27 | Method, apparatus and system for implementing fork service |
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| CN101277342B (en) | 2011-10-26 |
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