CN101087241A - An implementation method of third-party control service - Google Patents
An implementation method of third-party control service Download PDFInfo
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- CN101087241A CN101087241A CNA2006100609142A CN200610060914A CN101087241A CN 101087241 A CN101087241 A CN 101087241A CN A2006100609142 A CNA2006100609142 A CN A2006100609142A CN 200610060914 A CN200610060914 A CN 200610060914A CN 101087241 A CN101087241 A CN 101087241A
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Abstract
The invention relates to realize method for third part control service, which is used to provide service network, and it includes following steps: A) the service signed user has built the calling connection, and the application sever to process said service is the agent of back-to-back user in signaling path; B) the service signed user initiates the operation for the third part control service; C) application sever receives said service operation information, and the service operation information contains the first dialog label and the third part label, and positions the first dialog which need to be repositioned corresponding with first dialog label according to back-to-back agent mechanism; D) the application sever reposition the first dialog which need to be repositioned according to the third party label to finish the service procession. Because the invention does not need the MGCF to support SIP REFER message, realize the CONF and ECT service, and simplify the service flow, and it is convenient to promote the service.
Description
Technical field
The third party who the present invention relates in a kind of packet switching network controls business, relates in particular to a kind of Session initiation Protocol that adopts and carries out the implementation method that the third party controls business with reference to information operating.
Background technology
At present, continuous maturation along with group technology, develop based on Circuit-switched conventional telecommunication network towards broadband telecommunication net based on packet switching, and use SIP (Session InitiationProtocol, Session initiation Protocol, hereinafter to be referred as SIP) as the grouping telecommunications core network call control signalling then be one of current technology trends, as normal structures such as ITU-T and ETSI to NGN (Next Genteration Network, next generation network) research, in this new packet telecommunications network, new block terminal sip terminal will progressively replace traditional terminal phone.
Wherein, ETSI subordinate's TISPAN (the Telecommunications and Internet ConvergedServices and Protocols for Advanced Networking) business with traditional business feature that will provide to the sip terminal user in NGN is referred to as PSTN/ISDN simulation services.TISPAN has set up a plurality of jobs (Work Item, WI) study these simulation business, as WI 03023 (DTS/TISPAN-03023-NGN-R1 NGN CONF) research CONF (Conference, convention business, hereinafter to be referred as CONF), WI 03055 (DTS/TISPAN-03055-NGN-R1 Explicit Communication Transfer) research call display transfer ECT (Explicit Communication Transfer, hereinafter to be referred as: ECT) business.
The CONF business can make the user can participate in and control a conversation that has many users to add, the ECT business make one in the conversation can be enough with this call transfer to the third party, more detailed business description can be referring to WI 03023 and WI 03055 current up-to-date draft standard.
In these two traffic criteria of WI 03023 and WI 03055 current formulation, all used identical technology to realize operation flow, be analyzed as follows respectively:
1) CONF convention business process analysis
In the business realizing flow process of CONF meeting, the user can invite one and its user who has set up session relationship to join in the meeting, and the user sends SIP REFER message (Session initiation Protocol is with reference to informational message) and realizes this function.In SIP REFER message, the Request-URI of expression request purpose (Uniform Resource Identifier, the unified resource sign, hereinafter to be referred as: meeting identification is set URI); The invited user sign is set among the Refer-To of expression with reference to purpose, when invited user has a plurality of registration terminal, also need in Refer-To, adopt global routable user agent URI (Globally Routable User Agent URIs is designated hereinafter simply as GRUU) to identify and initiate to invite the user to set up that invited user terminal of session relationship; The method parameter of Refer-To is set to " INVITE "; The session Dialog sign of having set up between two users is set among the Replaces (alternative parameter), indicates this session to be replaced by the new session of setting up between meeting and the invited user.
This SIP REFER message will be routed to application server AS (the Application Server that handles the CONF convention business according to the meeting identification that Request-URI is provided with, hereinafter to be referred as AS), AS will be according to aforesaid Session initiation Protocol with reference to the content that is provided with in the information SIP REFER message, send Session initiation Protocol message request SIP INVITE (Session initiation Protocol invitation message) to invited user (terminal), and the Replaces information of carrying in the SIP REFER message is continued to be carried by the SIP INVITE, make between meeting and the invited user (terminal) and set up new session, invited user (terminal) discharges the session of having set up between two users according to the Replaces information in the SIP INVITE simultaneously.
In WI 03023 current draft standard, provided a signaling process example, as shown in Figure 1, its flow process brief introduction is as follows.
Step 1): user UE-A initiates a session, calls out a PSTN/ISDN user.
Step 15): a meeting is created in user UE-A application, initiates a session to the AS that handles convention business.
Step 25): the PSTN/ISDN user that user UE-A invites and he is conversing joins in the meeting, sends SIP REFER message to the AS that handles convention business.
Step 31): the AS that handles convention business to PSTN/ISDN user's initiation session, sends the SIP INVITE according to the related content that is provided with in the SIP REFER message of receiving.
More detailed flow process is explained and can be not described in detail at this referring to WI 03023 current draft standard.
2) ECT show Calls transfer service process analysis
In the realization flow of ECT transfer service, user B and user A, user C have set up two sessions respectively, user B can make between user A and the user C and set up new session, and make and oneself withdraw from two sessions of originally having set up, user B realizes this function by send SIP REFER message to user A, in SIP REFER message, among the Request-URI of expression request purpose user A sign is set; Be provided with user C sign among the Refer-To of expression with reference to purpose, when user C has a plurality of registration terminal, can also in Refer-To, adopt GRUU to identify that user C terminal of having set up session relationship with user B; The method parameter of Refer-To is set to " INVITE "; The session Dialog sign of having set up between user B and the user C is set among the Replaces, indicates this session to be replaced by the new session of setting up between user C and the user A; The session Dialog sign of having set up between user B and the user A is set among the Target-Dialog (target session parameter).
After user A receives this SIP REFER message, according to the content that is provided with in the aforesaid SIP REFER message, this is and the call transfer request of oneself just sending at the user B of session by the Target-Dialog validation of information, send the SIP INVITE to user C (terminal), and the Replaces information of carrying in the SIPREFER message is continued to be carried by the SIP INVITE, make between user A and the user C and set up new session, simultaneously user C discharges the session that itself and user B have set up according to the Replaces information in the SIP INVITE.After new session between user A and the user C is set up, user B will discharge its session of having set up with user A.
Detailed flow process is explained and can be not described in detail at this referring to WI 03055 current draft standard.
Can see thus, in CONF and ECT business realizing flow process, the constructed point of its existence is: the terminal that the user uses SIP REFER message to initiate the business operation request, use GRUU to identify distinguished and initiated business operation request user session contact is arranged, the session Dialog sign using Replaces to indicate to want replaced release etc.
These identical technical schemes also make the business realizing flow process of CONF and ECT have identical shortcoming:
At first, under the intercommunication scene, concerning the ECT business, MGCF needs treatment S IP REFER message, this moment, MGCF was equivalent to a SIP UA (User Agent, the user agent) manages business, but the intercommunication that the original function of MGCF is just handled between packet domain and the circuit domain is called out, can MGCF manage business as a SIP UA and also there is much controversy in normal structure at present, if the function of final MGCF remains unchanged, then use the technical scheme of SIP REFER can't satisfy business realizing flow process under the intercommunication scene.
Secondly, except that initiating business operation requesting users terminal, to participating in other professional user terminals specific (special) requirements is arranged also, and the not signatory in fact CONF/ECT business of these users, if these user terminals are not supported operations such as REFER/Refer-To, Replaces, Target-Dialog, the user of the CONF/ECT business of then having contracted still can't the successful Application business.
In addition, GRUU mechanism is a draft of ietf standard tissue also at present, if contracted user's terminal of CONF/ECT business is not supported GRUU mechanism, then business also can't application success.
Surface analysis as can be seen in the past, the shortcoming of TISPAN WI 03023 and WI 03055 draft standard is that the SIP REFER that the contracted user initiates picks up other user terminals that are required to send to the business of participation, thereby causes the specific (special) requirements on business cooperates to these user terminals and MGCF.
Therefore, prior art awaits to continue to improve and development.
Summary of the invention
The object of the present invention is to provide a kind of third party to control professional implementation method, it is the business realizing flow process of another kind of CONF and ECT, this business realizing flow process does not need MGCF to the support of SIPREFER message, do not have specific (special) requirements to participating in other professional user terminals, do not need to use GRUU mechanism, simplify the business realizing flow process greatly, be convenient to professional popularization.
Technical scheme of the present invention comprises:
A kind of third party controls professional implementation method, and being used for provides professional network with Session initiation Protocol, and it comprises step:
A) the service contracting user has set up and has called out contact, and the application server of handling described business is in the described calling signaling path as back-to-back user agent;
B) described service contracting user initiates the third party and controls professional operation;
C) described application server is received described business operation information, in business operation information, comprise first session identification of described calling and third party sign, orient described first session identification in requisition for first session that is redirected according to back-to-back user agent mechanism;
D) described application server identifies according to the third party, and redirect operation is carried out in first session that described need are redirected, and finishes described Business Processing.
Described method, wherein, described business operation information also comprises request purpose and with reference to purpose; The described request purpose is the opposite end square mark of described calling, and describedly is third party's sign with reference to purpose; Or the described request purpose is third party's sign, and described be the opposite end square mark of described calling with reference to purpose.
Described method, wherein, among the step D, described first session is redirected to described third party and identifies corresponding third party.
Described method, wherein, described application server is set up and described third party identifies corresponding third-party calling contact.
Described method, wherein, described service contracting user and described third party identify corresponding third party and have set up the calling contact; Described application server is oriented second session identification that is arranged in this calling contact in requisition for second session that is redirected according to back-to-back user agent mechanism, and redirect operation is carried out in second session.
Described method, wherein, described business operation information also comprises described second session identification.
Described method, wherein, what described third party controlled is operating as described service contracting Client-initiated Session initiation Protocol with reference to information operating; Described Session initiation Protocol comprises described business operation information with reference to informational message.
Described method, wherein, described first session identification or second session identification are arranged in the alternative parameter and/or target session parameter of described Session initiation Protocol with reference to informational message.
Described method, wherein, described redirect operation is that described application server is initiated invitation message again.
Described method, wherein, the business of described third party's control is convention business or call transfer service.
A kind of third party provided by the present invention controls professional implementation method, owing to do not need the support of MGCF to SIP REFER message, there is not specific (special) requirements to participating in other professional user terminals, do not need to use GRUU mechanism, but by the AS that handles CONF or ECT business as B2BUA (Back to Back User Agent, back-to-back user agent) is in advance in contracted user's the call signaling path, and the SIP REFER that intercepts and captures contracted user's initiation operates, adopt redirecting technique, thereby CONF and ECT business have been realized, simplify the business realizing flow process greatly, be convenient to professional popularization.
Description of drawings
Fig. 1 is the CONF convention business schematic flow sheet of prior art;
Fig. 2 is the schematic flow sheet of first preferred embodiment of the inventive method;
Fig. 3 is the schematic flow sheet of second preferred embodiment of the inventive method;
Fig. 4 is the schematic flow sheet of the 3rd preferred embodiment of the inventive method;
Fig. 5 is the schematic flow sheet of the 4th preferred embodiment of the inventive method.
Embodiment
Below in conjunction with accompanying drawing, will carry out comparatively detailed explanation to each preferred embodiment of the present invention.
The present invention proposes the business realizing flow process of a kind of CONF and ECT, this business realizing flow process is the business of third party control, do not need MGCF to the support of Session initiation Protocol with reference to information SIP REFER message, there is not specific (special) requirements to participating in other professional user terminals, do not need to support with reference to operation REFER, reference object parameters R efer-To, alternative parameter Replaces, operations such as target session parameter Target-Dialog, only need to support basic Session Initiation Protocol mechanism, do not need to use GRUU mechanism, the contracted user uses SIP REFER message to initiate the business operation request, the AS of contracted user's processing CONF/ECT business is in contracted user's the signaling paths in advance as B2BUA, and intercepting and capturing SIP REFER message, use redirecting technique, can finish corresponding service processing.
The key technology of the inventive method just is that the AS of contracted user's processing CONF/ECT business is in contracted user's the signaling paths in advance as B2BUA, and after receiving SIP REFER message, this message is not sent to and participate in other professional user terminals, but according to the routing information in the SIP REFER message, adopt redirecting technique, to finish corresponding service processing.
Below by specific embodiment employing CONF that the technology of the present invention realized and the operation flow of ECT are described, need to prove, the explanation that flow process diagram of being done among the present invention and explanatory note are only done for outstanding key technology of the present invention, do not represent a complete calling and professional control flow, do not have all possible branch of limit flow process yet.
The embodiment one of the inventive method as shown in Figure 2, the convention business scene of its scene and prior art Fig. 1 is similar, different is called subscriber is the same with the calling subscriber to be a sip user, rather than the PSTN/ISDN user of prior art: sip user UE-A is the service contracting user, the promptly signatory user that can use the third party to control business, sip user UE-A and sip user UE-B set up conversation, sip user UE-A application conferencing resource is created successfully, and sip user UE-A initiates third party's control operation-REFER operation user UE-B is also added in the meeting.Its flow process is explained as follows:
User UE-A calling party UE-B, the SIP INVITE of initiation, the session identification of this message is assumed to be Dialog 1, and " INVITE[1] " as shown in Figure 2 promptly represents the SIP INVITE of session Dialog 1.
The AS that handles the CONF business receives this SIP INVITE[1] message, adopt the B2BUA mechanism in the Session Initiation Protocol, this session that terminates, and initiate a new session SIPINVITE[2 to user UE-B again] message, the session identification of this message is assumed to be Dialog 2.User UE-B receives this SIP INVITE[2] message, reply, send 200 OK[2] answer code.
The AS that handles the CONF business receives this 200 OK[2] answer code, be converted to 200 OK[1] answer code, send to calling subscriber UE-A.User UE-A receives this 200 OK[1] answer code, initiate ACK[1] acknowledge message.The AS that handles the CONF business receives this ACK[1] acknowledge message, be converted to ACK[2] acknowledge message, send to called subscriber UE-B.
Session between user UE-A and the user UE-B is set up successfully, can begin conversation, can transmit Media Stream mutually between the user terminal.
Compare with the convention business realization flow of prior art Fig. 1, the inventive method difference clearly is: the AS that handles the CONF business is added into sip user UE-A in the call signaling path that the called subscriber initiates, this AS adopts B2BUA mechanism, and created the session of Dialog1 between the calling subscriber, and created the session of Dialog 2 between the called subscriber.
User UE-A initiates the application to conferencing resource, and creates successfully, and this section flow process is identical with step 15～24 of prior art Fig. 1, omits explanation.User UE-A initiates SIP REFER operation, and user UE-B is also joined in the meeting of having created.In this REFER message, the conferencing resource sign conf@home.net that Request-URI is set to create, it is described third party's sign, Refer-To is set to the sign of user UE-B, it is the described opposite end square mark of the calling of setting up between user UE-A and conferencing resource, Replaces is set to Dialog 1 session identification, i.e. first session identification of described calling.The content of this REFER message setting represents promptly to wish that meeting initiates a session request to user UE-B, invites it to add in the meeting.
The AS that handles the CONF business receives and resolves this SIP REFER message, be described business operation information, judge that according to B2BUA mechanism Dialog 1 session identification that is provided with among the Replaces is session identification Dialog 2 in called this section correspondence, then the session Dialog 2 with user UE-B adopts redirecting technique that it is joined in the meeting of having created, this session is first session of the described first session identification correspondence, send SIP INVITE[2 once more to user UE-B] message, carry the SDP information of the meeting of having created in the message, be about to described first session redirection identifies correspondence to described third party third party's (conferencing resource), owing to be to send once more, generally also this INVITE is called invitation message Re-INVITE again.
Here can see, do not adopt GRUU mechanism in this embodiment of the invention, even the called subscriber has a plurality of registration terminals, a plurality of simultaneous sessions are arranged, AS can unique location to which session of called subscriber be redirected by the setting among the Replaces in the present embodiment.
And in Fig. 1 of prior art operation flow, because AS does not adopt B2BUA and redirecting technique, when the called subscriber has a plurality of registration terminals, a plurality of simultaneous sessions are arranged, can only earlier session be sent on certain called user terminal by GRUU (also may be other substitute technology certainly), the setting among the Replaces also only plays a role on this called user terminal.
Described user UE-B receives this SIP Re-INVITE[2] message and AS be with regard to the SDP information of the meeting of carrying in this message, carries out both sides' SDP information reconciliation, and the negotiations process present embodiment is slightly.User UE-B replys this INVITE[2] message, send 200 OK[2] answer code.
AS receives this 200 OK[2] answer code, send ACK[2] acknowledge message.The redirection process of session Dialog 2 between AS and the user UE-B is finished, the session Dialog 2 that user UE-B had before set up is redirected in the meeting of having created that (the previous opposite end SDP information of session Dialog 2 are for user UE-A's, become meeting now), promptly user UE-B joins in the meeting.
Second preferred embodiment of the inventive method as shown in Figure 3, the convention business scene of its scene and prior art Fig. 1 is identical: sip user UE-A is the service contracting user, sip user UE-A and PSTN/ISDN user B set up conversation, sip user UE-A application conferencing resource is created successfully, and sip user UE-A initiates the REFER operation user B is also added in the meeting.
The same with the business realizing flow process of the embodiment one of the inventive method, the call signaling path that user UE-A initiates to PSTN/ISDN user B has passed through the AS that handles the CONF business, AS adopts B2BUA mechanism to create two sections sessions respectively, and created session Dialog 1 between the calling subscriber UE-A, and created session Dialog 2 between the MGCF.
After conversation is set up successfully between described user UE-A and the user B, initiate application, and create successfully conferencing resource.User UE-A initiates the REFER operation, and user B is also joined in the meeting of having created, and flow process is explained as follows:
User UE-A initiates the SIPREFER operation, different with embodiment one is, in this REFER message, adopt another set-up mode, can reach the called subscriber too and join effect in the meeting: Request-URI is set to the sign of user B, it is the described opposite end square mark of the calling of setting up between user UE-A and user B, the meeting identification conf@home.net that Refer-To is set to create, promptly described third party's sign, Replaces is set to Dialog 1 session identification.The content of this REFER message setting represents then to wish that user B initiates a session request to meeting, to add in the meeting.
The AS that handles the CONF business receives and resolves this SIP REFER message, judge that according to B2BUA mechanism Dialog 1 session identification that is provided with among the Replaces is session identification Dialog 2 in called this section correspondence, then adopt redirecting technique that it is joined in the meeting of having created this session Dialog 2, be about to this session redirection identifies correspondence to described third party third party, send Re-INVITE[2 to called subscriber B (MGCF)] message, carry the SDP information of the meeting of having created in the message.
Described MGCF receives this SIP Re-INVITE[2] message and AS be with regard to the SDP information of the meeting of carrying in this message, carries out both sides' SDP information reconciliation, and negotiations process is that prior art is known, so repeat no more.MGCF replys this INVITE[2] message, send 200 OK[2] answer code.
AS receives this 200 OK[2] answer code, send ACK[2] acknowledge message.The redirection process of session Dialog 2 between AS and the MGCF (user B) is finished, and user B joins in the meeting.
The 3rd preferred embodiment of the inventive method as shown in Figure 4.Sip user UE-B is the service contracting user, set up conversation between user UE-A and the user UE-B, set up conversation between user UE-B and the user UE-C, user UE-B initiates the third party and controls the REFER operation, make between user UE-A and the user UE-C and to set up conversation, user UE-B then withdraw from and user UE-A, UE-C between the conversation of before having set up.
The same with the business realizing flow process of the foregoing description one, call signaling path between user UE-B and the user UE-A has passed through the AS that handles the ECT business, AS adopts B2BUA mechanism to create two sections sessions respectively, and created session Dialog 1 between the user UE-A, and created session Dialog 2 between the user UE-B; Equally, call signaling path between user UE-B and the user UE-C has also passed through the AS that handles the ECT business, AS adopts B2BUA mechanism to create two sections sessions respectively, and has created session Dialog 3 between the user UE-B, and has created session Dialog4 between the user UE-C.
Described user UE-B initiates the REFER operation, makes to set up conversation between user UE-A and the user UE-C, and flow process is explained as follows:
User UE-B initiates SIP REFER operation, in this REFER message, Request-URI is set to user UE-A sign, and Refer-To is set to user UE-C sign, Target-Dialog is set to Dialog 2 session identifications, and Replaces is set to Dialog 3 session identifications.The content representation of this REFER message setting wishes that user UE-A is to the user UE-C request of making a call.
Certainly, as described in embodiment two, this REFER message also can adopt another set-up mode and arrive same effect: Request-URI and be set to user UE-C sign, Refer-To is set to user UE-A sign, Target-Dialog is set to Dialog 3 session identifications, Replaces is set to Dialog 2 session identifications, wishes that with expression user UE-C is to the user UE-A request of making a call.
The AS that handles the ECT business receives and resolves this SIP REFER message, judge that according to B2BUA mechanism Dialog 2 session identifications that are provided with among the Target-Dialog are session identification Dialog 1 in this section of user UE-A correspondence, then this session Dialog 1 is redirected to user UE-C, user UE-A sends Re-INVITE[1] message, the SDP information of carrying user UE-C in the message.
User UE-A receives this SIP Re-INVITE[1] message and AS be with regard to the SDP information of the user UE-C that carries in this message, carries out both sides' SDP information reconciliation, and the negotiations process present embodiment is slightly.UE-A replys this INVITE[1] message, send 200 OK[1] answer code.
AS receives this 200 OK[1] answer code, obtained to consult the SDP information of the user UE-A that finishes, and judge that according to B2BUA mechanism Dialog 3 session identifications that are provided with among the Replaces are session identification Dialog 4 in this section of user UE-C correspondence, then this session Dialog 4 is redirected to user UE-A, user UE-C sends Re-INVITE[4] message, carry the SDP information of having consulted the user UE-A that finishes in the message.
User UE-C receives this SIP Re-INVITE[4] message, reply, send 200 OK[4] answer code.AS receives this 200 OK[4] answer code, send ACK[1 to user UE-A] acknowledge message.AS sends ACK[4 to user UE-C] acknowledge message.
Calling between user UE-A and the user UE-C is set up, and can see, this calling remains by AS adopts B2BUA mechanism respectively and created two sections session: Dialog 1 and Dialog 4 between user UE-A and the user UE-C.
AS need withdraw from user UE-B previous session Dialog 2 related with user UE-A that has created and the session Dialog 3 related with user UE-C, sends SIP BYE[2] message, discharge session Dialog 2.
User UE-B receives this BYE[2] message, discharge session Dialog 2, send 200 OK[2] answer code.AS sends SIP BYE[3] message, discharge session Dialog 3.
User UE-B receives this BYE[3] message, discharge session Dialog 3, send 200 OK[3] answer code.
Can see that by above-mentioned three embodiment the AS that the inventive method is handled CONF or ECT business is in contracted user's the call signaling path in advance as B2BUA; And the session identification that AS is provided with according to Replaces/Target-Dialog in the SIP REFER message of contracted user's initiation according to the machine-processed unique session that needs are redirected of orienting of B2BUA, does not so just need to use GRUU mechanism to come locating terminal; And, AS is redirected the session that needs are redirected, participate in the Re-INVITE message that other professional user terminal/MGCF only need handle basic Session Initiation Protocol like this, do not need to support operations such as REFER/Refer-To, Replaces, just can finish Business Processing.
It is to be noted, the present invention program not merely is applicable to CONF and ECT business, but the business of using SIP REFER operation to carry out third party's control all is suitable for, the service contracting user has set up with another one SIP UA (the 2nd SIP UA) and has called out contact, the service contracting user initiates the REFER operation, carrying this SIP UA sign (being the opposite end square mark of service contracting user in this calling contact) that is arranged among Request-URI or the Refer-To and the third party SIP UA that is arranged among Refer-To or the Request-URI in the REFER message identifies, and this calls out the session identification in the contact, AS receives REFER message, adopt redirecting technique, with the session redirection of this session identification correspondence to the third party, call out contact between these two SIP UA, to set up, thereby reach the purpose that the service contracting user carries out third party's control.Such as for the CONF business, the contracted user has set up two calling contacts respectively with conferencing resource and another user B, by third party's control of SIP REFER, make also to set up between user B and the conferencing resource and call out contact, even user B adds meeting.
In the professional and ECT business, call out contact at above-mentioned CONF, therefore only need carry out redirect operation and just can make and set up calling between these two SIP UA and get in touch because the service contracting user has set up with third party SIP UA simultaneously.
In addition, the present invention is equally applicable to the situation that the service contracting user does not have and third party SIP UA foundation calling is got in touch, at this moment, after the service contracting user initiates third party's control, also need the third party to set up a new calling contact, AS could be redirected to the third party with second party SIP UA, makes to set up between these two SIP UA to call out contact.This also is a kind of call transfer service, and promptly call transfer service can also be to initiate a new calling transfer of calling out except being to replace one to exist the show Calls of calling to shift the ECT business.
Therefore, the present invention also provides embodiment four as shown in Figure 5: sip user UE-B is the service contracting user, set up conversation between user UE-A and the user UE-B, user UE-B initiates the third party and controls the REFER operation, make and set up conversation between user UE-A and the user UE-C, user UE-B then withdraws from the conversation of before having set up with user UE-A.
The same with the business realizing flow process of the foregoing description three, call signaling path between user UE-B and the user UE-A has passed through the AS that handles call transfer service, AS adopts B2BUA mechanism to create two sections sessions respectively, and created session Dialog 1 between the user UE-A, and created session Dialog 2 between the user UE-B.
Described user UE-B initiates the REFER operation, makes to set up conversation between user UE-A and the user UE-C, and flow process is explained as follows:
User UE-B initiates SIP REFER operation, in this REFER message, the Request-URI of expression request purpose is set to user UE-A sign, it is the opposite end square mark of described calling, expression is set to user UE-C sign with reference to the Refer-To of purpose, be described third party's sign, Replaces is set to Dialog 2 session identifications.The content representation of this REFER message setting wishes that user UE-A is to the user UE-C request of making a call.
The AS that handles call transfer service receives and resolves this SIP REFER message, different with embodiment three is, user UE-A and user UE-C do not set up in advance and call out, and this REFER message can not directly send to user UE-A, obviously, AS need initiate a new call request to user UE-C, sends SIP INVITE[3] message, the SDP information of carrying user UE-A in the message.
AS and user UE-C carry out SDP negotiation, and user UE-C replys, and send 200 OK[3] answer code, the SDP information of carrying user UE-C in the message.
Similarly, AS judges that according to B2BUA mechanism Dialog 2 session identifications that are provided with among the Replaces are session identification Dialog 1 in this section of user UE-A correspondence, then this session Dialog 1 is redirected to user UE-C, send Re-INVITE[1 to user UE-A] message, the SDP information of carrying user UE-C in the message.
User UE-A receives this SIP Re-INVITE[1] message and AS be with regard to the SDP information of the user UE-C that carries in this message, carries out both sides' SDP information reconciliation, and the negotiations process present embodiment is slightly.UE-A replys this INVITE[1] message, send 200 OK[1] answer code.
AS receives this 200 OK[1] answer code, send ACK[1 to user UE-A respectively] acknowledge message, and send ACK[3 to user UE-C] acknowledge message.
Calling between user UE-A and the user UE-C is set up, and can see, this calling remains by AS adopts B2BUA mechanism respectively and created two sections session: Dialog 1 and Dialog 3 between user UE-A and the user UE-C.
According to the indication of REFER message, AS need withdraw from user UE-B the session Dialog 2 related with user UE-A that has before created, and sends SIP BYE[2] message, discharge session Dialog2.
User UE-B receives this BYE[2] message, discharge session Dialog 2, send 200 OK[2] answer code.
In embodiment four, user UE-B and user UE-C do not set up in advance and call out, and by INVITE method (method) requirement of carrying in the SIPREFER message, AS need initiate a new INVITE to UE-C and call out; And in embodiment three, because user UE-C has set up calling in advance, therefore according to INVITE method (method) requirement of carrying in the SIP REFER message, this INVITE is a redirected call, in addition the flow process basically identical of embodiment three and embodiment four.
In addition, need to prove that the calling contact that the service contracting user sets up does not in advance also require that the service contracting user necessarily is in talking state, also can be in ringing condition or tin ring-back tone state or be held (hold) state etc.
In addition, need to prove, in the foregoing description, AS is arranged in the calling contact that the service contracting user has set up, AS both can be arranged in service contracting user's home network, also can be arranged in the home network of this calling contact to end subscriber, with embodiment four is example, AS can be positioned at the home network of user UE-B, also can be positioned at the home network of user UE-A, to latter instance, because what be provided with among the REFER that user UE-B the initiates operation Replaces is Dialog 2 session identifications, this is the discernible session identification of home network of user UE-B, therefore when this REFER message routed to the AS of home network of user UE-A at the home network from user UE-B, if passed through other B2BUA network element that is arranged in the calling contact that UE-B and UE-A set up in the routed path, these network elements need carry out back-to-back replacement according to B2BUA mechanism with the session identification that is provided with among the Replaces, so that this REFER message when arriving the AS of home network of user UE-A, can be discerned by AS.
In addition, service contracting Client-initiated third party controls not necessarily REFER message of professional operation, also can be other operation information, after service contracting user attaching network is received this operation information, it is translated to REFER message, sends again.For example service contracting user's terminal is not a sip terminal, can't send REFER message, the third party that it is initiated controls business operation then to be needed to be translated to REFER message by its home network as simulation hooking signal, digital subscriber signal etc., carries out respective handling by AS again; Perhaps, other sip message has the effect identical with REFER message under special scenes, set up the calling contact with two SIP UA respectively as the service contracting user, service contracting user on-hook, AS receives SIP BYE message, two two sessions of calling out the contact correspondence that the service contracting user has been set up are redirected respectively, make to set up between these two SIP UA and call out contact, and the service contracting user withdrawed from, the business operation information that do not indicate third party to control in the BYE message this moment, AS obtains corresponding business operation information (calling out contact corresponding session identification and opposite end user ID for two that have set up) just according to current special scenes (set up two and called out contact) and service contracting user's signatory authority (as the ECT business of having contracted) from the current session context of professional contracted user.
The inventive method does not need MGCF to the support of SIP REFER message, do not have specific (special) requirements to participating in other professional user terminals, do not need to support operations such as REFER/Refer-To, Replaces, Target-Dialog, only need to support basic Session Initiation Protocol mechanism; Do not need to use GRUU mechanism, but be in contracted user's the call signaling path in advance as B2BUA by the AS that handles CONF or ECT business, and the SIP REFER that intercepts and captures contracted user's initiation operates, adopt redirecting technique, thereby realize CONF and ECT business, simplify the business realizing flow process greatly, be convenient to professional popularization.
Should be understood that above-mentioned description at specific embodiment is comparatively detailed, but can not therefore be interpreted as the restriction to scope of patent protection of the present invention, scope of patent protection of the present invention should be as the criterion with claims.
Claims (10)
1, a kind of third party controls professional implementation method, and being used for provides professional network with Session initiation Protocol, and it comprises step:
A) the service contracting user has set up and has called out contact, and the application server of handling described business is in the described calling signaling path as back-to-back user agent;
B) described service contracting user initiates the third party and controls professional operation;
C) described application server is received described business operation information, in business operation information, comprise first session identification of described calling and third party sign, orient described first session identification in requisition for first session that is redirected according to back-to-back user agent mechanism;
D) described application server identifies according to the third party, and redirect operation is carried out in first session that described need are redirected, and finishes described Business Processing.
2, method according to claim 1 is characterized in that, described business operation information also comprises request purpose and with reference to purpose; The described request purpose is the opposite end square mark of described calling, and describedly is third party's sign with reference to purpose; Or the described request purpose is third party's sign, and described be the opposite end square mark of described calling with reference to purpose.
3, method according to claim 2 is characterized in that, among the step D, described first session is redirected to described third party and identifies corresponding third party.
4, method according to claim 3 is characterized in that, described application server is set up and described third party identifies corresponding third-party calling contact.
5, method according to claim 2 is characterized in that, described service contracting user and described third party identify corresponding third party and set up the calling contact; Described application server is oriented second session identification that is arranged in this calling contact in requisition for second session that is redirected according to back-to-back user agent mechanism, and redirect operation is carried out in second session.
6, method according to claim 5 is characterized in that, described business operation information also comprises described second session identification.
According to each described method in the claim 3 to 5, it is characterized in that 7, what described third party controlled is operating as described service contracting Client-initiated Session initiation Protocol with reference to information operating; Described Session initiation Protocol comprises described business operation information with reference to informational message.
According to each described method in the claim 3 to 5, it is characterized in that 8, described first session identification or second session identification are arranged in the alternative parameter and/or target session parameter of described Session initiation Protocol with reference to informational message.
According to each described method in the claim 3 to 5, it is characterized in that 9, described redirect operation is that described application server is initiated invitation message again.
According to each described method in the claim 3 to 5, it is characterized in that 10, the business of described third party's control is convention business or call transfer service.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100609142A CN101087241B (en) | 2006-06-06 | 2006-06-06 | An implementation method of third-party control service |
| PCT/CN2006/003268 WO2007062609A1 (en) | 2005-12-03 | 2006-12-04 | A method, a application server and a system for implementing the third party control service |
| EP06817945A EP1959608A4 (en) | 2005-12-03 | 2006-12-04 | A method, a application server and a system for implementing the third party control service |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2006100609142A CN101087241B (en) | 2006-06-06 | 2006-06-06 | An implementation method of third-party control service |
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| CN101087241A true CN101087241A (en) | 2007-12-12 |
| CN101087241B CN101087241B (en) | 2011-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2006100609142A Expired - Fee Related CN101087241B (en) | 2005-12-03 | 2006-06-06 | An implementation method of third-party control service |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010045812A1 (en) * | 2008-10-24 | 2010-04-29 | 华为技术有限公司 | Method, apparatus and system for call switching |
| CN101277345B (en) * | 2008-05-14 | 2011-12-07 | 华为技术有限公司 | Method and apparatus for switching call |
| CN101668008B (en) * | 2009-09-25 | 2012-09-05 | 华为技术有限公司 | Transfer operation-containing communication method, device and system |
| CN104580119A (en) * | 2013-10-28 | 2015-04-29 | 华为技术有限公司 | Audio-video communication method, equipment and system |
| CN106506885A (en) * | 2016-09-24 | 2017-03-15 | 深圳市潮流网络技术有限公司 | A kind of unaware call transfer method |
| CN107103399A (en) * | 2016-02-22 | 2017-08-29 | 西门子公司 | Method and apparatus for the workflow of control business |
| CN111641602A (en) * | 2020-05-13 | 2020-09-08 | 维沃移动通信有限公司 | Session creation method and device and electronic equipment |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE522618C2 (en) * | 2001-03-12 | 2004-02-24 | Telia Ab | A device and method for identifying mobile users |
| KR100509103B1 (en) * | 2002-11-13 | 2005-08-19 | 홍봉조 | Method and system for providing call waiting service |
| CA2515957C (en) * | 2003-02-13 | 2016-07-12 | Truelink, Inc. | Methods, apparatuses and systems facilitating seamless, virtual integration of online membership models and services |
| US6963352B2 (en) * | 2003-06-30 | 2005-11-08 | Nortel Networks Limited | Apparatus, method, and computer program for supporting video conferencing in a communication system |
-
2006
- 2006-06-06 CN CN2006100609142A patent/CN101087241B/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101277345B (en) * | 2008-05-14 | 2011-12-07 | 华为技术有限公司 | Method and apparatus for switching call |
| WO2010045812A1 (en) * | 2008-10-24 | 2010-04-29 | 华为技术有限公司 | Method, apparatus and system for call switching |
| CN101668008B (en) * | 2009-09-25 | 2012-09-05 | 华为技术有限公司 | Transfer operation-containing communication method, device and system |
| CN104580119A (en) * | 2013-10-28 | 2015-04-29 | 华为技术有限公司 | Audio-video communication method, equipment and system |
| CN107103399A (en) * | 2016-02-22 | 2017-08-29 | 西门子公司 | Method and apparatus for the workflow of control business |
| CN106506885A (en) * | 2016-09-24 | 2017-03-15 | 深圳市潮流网络技术有限公司 | A kind of unaware call transfer method |
| CN111641602A (en) * | 2020-05-13 | 2020-09-08 | 维沃移动通信有限公司 | Session creation method and device and electronic equipment |
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| Publication number | Publication date |
|---|---|
| CN101087241B (en) | 2011-04-20 |
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