CN101998325A - Calling method and device for indicating terminal media type - Google Patents
Calling method and device for indicating terminal media type Download PDFInfo
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- CN101998325A CN101998325A CN2009101675605A CN200910167560A CN101998325A CN 101998325 A CN101998325 A CN 101998325A CN 2009101675605 A CN2009101675605 A CN 2009101675605A CN 200910167560 A CN200910167560 A CN 200910167560A CN 101998325 A CN101998325 A CN 101998325A
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
Abstract
The invention provides calling method and device for indicating a terminal media type. The method comprises the following steps: after consulting with an application server or a second user terminal, a first user terminal initiates a call to a third user terminal; the application server sends a request message to the third user terminal, wherein the request message carries the terminal media type; the third user terminal initiates an offer to the application server on the basis of the request message, the application server forwards the offer initiated by the third user terminal to the first user terminal so as to initiate consultation between the third user terminal and the first user terminal; and the first user terminal is communicated with the third user terminal after consultation.
Description
Technical field
The present invention relates to the communications field, relate in particular to IMS territory business nesting scene, propose a kind of medium of newtype.
Background technology
IP Multimedia System (IP Multimedia Core Network Subsystem, be called for short IMS) be by third generation partner program (3rd Generation PartnershipProject, abbreviation 3GPP) a kind of IP-based network framework of tissue proposition, it has made up an opening and service environment flexibly, support multimedia application, and provide abundant multimedia service for the user.
IMS is based on the communication network framework of IP, irrelevant with access technology, except being GPRS (General Packet Radio Service, GPRS), WLAN (Wireless Local Area Network, WLAN (wireless local area network)) etc. packet access network provides outside the business, can also be GSM (Global System for Mobile communications, global system for mobile communications), UMTS mobile cellular networks such as (Universal Mobile TelecommunicationsSystem, unified mobile communcations systems) provides professional.
The IMS territory is called out and is adopted SIP (Session Initial Protocol) agreement, and Session Initiation Protocol requires the negotiation of medium must satisfy OFFER/ANSWER model (seeing rfc3264 for details), be that OFFER/ANSWER must occur in pairs, continuous 2 OFFER of the same type (this situation agreement regulation is refused second OFFER with 491 message) can not be occurred, the ANSWER of OFFER can not be occurred not having.
As called end side, receive call request INVITE, the resource preparation that need be used to converse.If called receiving among the initial session request INVITE do not carried medium, then as called terminal, then can't know and prepare which type of medium, especially under the strong situation of terminal called energy force rate calling terminal ability, because called ability of not knowing the actual support of caller, bigger to the called puzzlement that causes, What is more, if ability is not occured simultaneously between calling terminal and the terminal called, the negotiation of then follow-up negotiation medium can't be finished.
The IMS system framework of TISPAN (Telecommunications and Internet converged Servicesand Protocols for Advanced Networking) definition is seen Fig. 1, and the part Network Element Function is as follows:
UE: user terminal, User Equipment.
CSCF (Call Session Control Function, CSCF): CSCF is the conversation control function body among the IMS.CSCF has realized soft switch controlled function main in the multimedia call in IMS, can regard the set of the various basic Server among the SIP as.
CSCF is divided three classes again: P-CSCF, S-CSCF, I-CSCF.
P-CSCF (Proxy CSCF): P is the node of user access core network, and is nearest from the user in the CSCF of IMS.The sip message of externally transmitting the message of UE and will receiving from the outside returns to UE.P can regard the Proxy among the SIP as.
S-CSCF (Serving CSCF): S is an IMS center core in the heart, is in the core the driver's seat of IMS, and any basically sip message all will comprise major control functions such as route, AS business trigger, are redirected through its processing.S can regard Registrar, Proxy and the Redirect Server among the SIP as.
I-CSCF (Interrogating-CSCF): I is the boundary node of a network, mainly the called S in the incoming call is positioned, thereby hide this topology of networks, because if all incoming calls all will be through the I of this network, then Wai Mian user is unable to find out the distribution situation of network elements such as this network internal S and P.I is that optionally that is to say not to need such network element, if you do not think painstakingly to hide the network configuration of oneself.Because the calling that enters all will be passed through I, though the function of I is comparatively single, bear heavierly, therefore in a single day a network has used I, generally with regard to more than one, so that carry out load balancing.Just because of this, I can not be concerned about session status yet.Certainly, because the specific position of I also can be done a little other work by I, such as filtering external request, statistics call data etc.I also accepts the REGISTER request in the own network usually, and specifies a S for it.I can regard Proxy, the Redirect Server among the SIP as.
HSS (Home Subscriber Server, home signature user server): be the place that is used to leave concentratedly user data (authentication information, business information, roaming information, original charge information etc.), user data always leaves among the HSS on its home domain (ground of opening an account), can beat the I that has that shouts with HSS, S and AS etc., UE can not have direct contact with HSS.A network can dispose a plurality of HSS, at this moment just needs SLF (ubscriber LocationFunction, contracted user's position functions) that a station address is mapped to corresponding HSS.At this moment SLF is exactly a Redirect Server among the SIP.
AS (Application Server, application server): be used to realize concrete professional server.Usually AS is triggered according to user's request and trigger condition by S, and it is to realize as the B2BUA among the SIP.This trigger mechanism among the IMS is its supporting business basis of separating with carrying just.
Fig. 2 is that the IMS territory is realized user's Call Forwarding No Reply and newly called out INVITE not with the schematic flow sheet of SDP, and step is described as follows:
Step 201:UE-A initiates initial session request INVITE to AS, carries the SDP of user A;
Step 202:AS transmits INVITE and gives UE-B;
Step 203-204:UE-B returns 183 responses, carries the SDP of user B;
Step 205-206:UE-A returns PRACK message and gives UE-B;
Step 207-208:UE-B returns PRACK message and gives UE-A;
Step 209-210:UE-B returns 180 message and gives UE-A;
User B is in the ring.
AS wait acknowledge timer expiry is cancelled the call attempt to B, is initiated to the call attempt of C then again, is idiographic flow below.
Step 211-214:AS cancels the call attempt to UE-B;
Step 215:AS is initiated to the calling of UE-C, does not carry SDP;
Step 216:UE-C returns 183, carries the SDP of UE-C;
Step 217:AS brings UE-A with the SDP of UE-C by UPDATE;
Step 218:UE-A returns 200, carries the medium of UE-A;
Step 219:AS sends to UE-C with the SDP of UE-A by PRACK;
Step 220:UE-C returns 200 (PRACK);
Step 221-222:UE-C ring returns 180;
User C is in ringing condition.
Step 223-224:UE-C off-hook is replied, and sends 200OK to UE-A;
Step 225-226:UE-A returns UE-C ACK message;
UE-A and UE-C enter in the conversation.
Step 227-230:UE-C on-hook, end of conversation.
Fig. 3 is that user's automatic station flow process and INVITE are realized not with the schematic flow sheet of SDP in the IMS territory, and step is described as follows:
Step 301:UE-A initiates initial session request INVITE to AS, carries the SDP of user A;
Step 302:AS returns 200OK, carries the prompt tone medium;
Step 303:UE-A returns ACK, sets up conversation between UE-A and the AS;
AS is put prompt tone, and finishes the process that collects the digits;
Step 304:AS is initiated to the calling of UE-B, and the number of UE-B is collected the digits by previous step AS and obtains;
Step 305:UE-B returns 183, carries the SDP of UE-B;
Step 306:AS sends to UE-A with medium by re-INVITE;
Step 307:UE-A returns 200OK, carries the SDP of UE-A;
Step 308:AS sends to UE-B with the medium of UE-A by PRACK;
Step 309:UE-B returns 200OK (PRACK);
Step 310:AS returns UE-A ACK message;
Step 311:UE-B returns 180 message;
UE-B enters ringing condition;
AS waits for that UE-B replys timer expiry, then cancels the call attempt to UE-B, collects the digits again and is initiated to new receipts user's calling.
Step 312-315:AS discharges the call attempt to UE-B;
Step 316:AS initiates INVITE, to UE-C;
Step 317:UE-C returns 183, carries SDP;
Step 318:AS sends to UE-A with medium by re-INVITE;
Step 319:UE-A returns 200, carries the SDP of UE-A;
Step 320:AS sends to UE-C with medium by PRACK message;
Step 321:UE-C returns 200OK;
Step 322:AS returns ACK;
Step 323:UE-C returns 180;
UE-C is in the ring.
Step 324: called off-hook, return 200OK;
Step 325:AS returns ACK and gives UE-C;
A, C user enter in the conversation.
Step 327-329: call out release.
Step 303-304:UE-B returns 183 responses, carries the SDP of user B;
Step 305-306:UE-A returns PRACK message and gives UE-B;
Step 307-308:UE-B returns PRACK message and gives UE-A;
Step 309-310:UE-B returns 180 message and gives UE-A;
User B is in the ring.
AS wait acknowledge timer expiry is cancelled the call attempt to B, is initiated to the call attempt of C then again, is idiographic flow below.
Step 311-314:AS cancels the call attempt to UE-B;
Step 315:AS is initiated to the calling of UE-C, does not carry SDP;
Step 316-317:UE-C returns 183, carries the SDP of UE-C;
Step 318-319:UE-A returns UE-C PRACK, carries the medium of UE-A;
Step 320-321:UE-C returns UE-A 200OK;
Step 322-323:UE-C ring returns 180;
User C is in ringing condition.
Step 324:UE-C off-hook is replied, and sends 200OK to UE-A;
Step 325:UE-A returns UE-C ACK message;
UE-A and UE-C enter in the conversation.
Step 326-329:UE-C on-hook, end of conversation.
Fig. 4 is that the IMS territory is realized user's Call Forwarding No Reply and newly called out the schematic flow sheet that INVITE carries SDP, and step is described as follows:
Step 401:UE-A initiates initial session request INVITE to AS, carries the SDP of user A;
Step 402:AS transmits INVITE and gives UE-B;
Step 403-404:UE-B returns 183 responses, carries the SDP of user B;
Step 405-406:UE-A returns PRACK message and gives UE-B;
Step 407-408:UE-B returns PRACK message and gives UE-A;
Step 409-410:UE-B returns 180 message and gives UE-A;
User B is in the ring.
AS wait acknowledge timer expiry is cancelled the call attempt to B, is initiated to the call attempt of C then again, is idiographic flow below.
Step 411-414:AS cancels the call attempt to UE-B;
Step 415:AS is initiated to the calling of UE-C, carries SDP (this SDP may be the medium that carry among the INVITE of UE-A, the medium that carry in the perhaps a certain step, the perhaps medium of AS structure);
Step 416:UE-C returns 183, carries the SDP of UE-C;
Step 417:AS sends to UE-A with the SDP of UE-C by UPDATE;
Step 418:UE-A returns 200, carries the medium of UE-A;
Step 419:AS sends PRACK to UE-C;
Whether the medium for the UE-A that carries in the step 418 are given to UE-C, follow by AS by the decision-making decision, if decision-making needs to change, then can send out a UE-C again by PRACK or UPDATE, because therefore this conversion supposes that the medium that carry in the step 418 do not need to be given to UE-C for the not influence of this scene analysis;
Step 420:UE-C returns 200OK;
Step 421-422:UE-C ring returns 180;
User C is in ringing condition.
Step 423-424:UE-C off-hook is replied, and sends 200OK to UE-A;
Step 425-426:UE-A returns UE-C ACK message;
UE-A and UE-C enter in the conversation.
Step 427-430:UE-C on-hook, end of conversation.
Fig. 5 is that the IMS territory realizes that user's automatic station flow process and INVITE carry the schematic flow sheet of SDP, and step is described as follows:
Step 501:UE-A initiates initial session request INVITE to AS, carries the SDP of user A;
Step 502:AS returns 200OK, carries the prompt tone medium;
Step 503:UE-A returns ACK, sets up conversation between UE-A and the AS;
AS is put prompt tone, and finishes the process that collects the digits;
Step 504:AS is initiated to the calling of UE-B, and the number of UE-B is collected the digits by previous step AS and obtains;
Step 505:UE-B returns 183, carries the SDP of UE-B;
Step 506:AS sends to UE-A with medium by re-INVITE;
Step 507:UE-A returns 200OK, carries the SDP of UE-A;
Step 508:AS sends to UE-B with the medium of UE-A by PRACK;
Step 509:UE-B returns 200OK (PRACK);
Step 510:AS returns UE-AACK message;
Step 511:UE-B returns 180 message;
UE-B enters ringing condition;
AS waits for that UE-B replys timer expiry, then cancels the call attempt to UE-B, collects the digits again and is initiated to new receipts user's calling.
Step 512-515:AS discharges the call attempt to UE-B;
Step 516:AS initiates INVITE, to UE-C, carries SDP (this SDP may be the medium that carry among the INVITE of UE-A, the medium that carry in the perhaps a certain step, the perhaps medium of AS structure);
Step 517:UE-C returns 183, carries SDP;
Step 518:AS sends to UE-A with the SDP of UE-C by re-INVITE;
Step 519:UE-A returns 200, carries the SDP of UE-A;
Whether the medium for the UE-A that carries in the step 519 are given to UE-C, follow by AS by the decision-making decision, if decision-making needs to change, then can send out a UE-C again by PRACK or UPDATE, because therefore this conversion supposes that the medium that carry in the step 519 do not need to be given to UE-C for the not influence of this scene analysis;
Step 520:AS sends to UE-C with medium by PRACK message;
Step 521:UE-C returns 200OK;
Step 522:AS returns ACK;
Step 523:UE-C returns 180;
UE-C is in the ring.
Step 524: called off-hook, return 200OK;
Step 525:AS returns ACK and gives UE-C;
A, C user enter in the conversation.
Step 526-529: call out release.
Above-mentioned 4 figure have introduced Call Forwarding No Reply INVITE respectively and have not carried SDP, automatic station INVITE does not carry SDP, Call Forwarding No Reply INVITE carries SDP, automatic station INVITE carries the realization flow of SDP, the flow process of consulting all is to carry medium by 183 of reliable transmission, and then send 180 mode, the also variable mode of more carrying medium of flow chart by 180 of reliable transmission; Above-mentioned 4 figure use non-precondition flow process to be introduced, the precondition flow process just increased the notice that medium reservation is finished, principle is similar, is not repeated.
For commentaries on classics before all kinds of and one number service, CSC, simultaneous ringing service flow process, if calledly do not return any reliable response of carrying medium, then to media negotiation without any influence, if recalled the reliable response of carrying medium, then flow chart and Call Forwarding No Reply are similar, are not repeated; For blind walk around connect, AS such as automatic station realizes professionally as B2BUA, a side is a conversation state, a side is the business of non-conversation state, flow chart and automatic station are similar, are not repeated.
Hereinafter will continue with Call Forwarding No Reply and automatic station is that example is told about.
Fig. 2 and Call Forwarding No Reply shown in Figure 3 and automatic station INVITE adopt this flow process not with the flow process of SDP, have following problem:
The called INVITE that does not carry medium that receives does not then know how to prepare the medium of this side, such as, if called support Voice ﹠ Video is called out, then should prepare the medium of audio frequency, still the medium of video, still preparation simultaneously;
Called can't the decision-making adopts the medium and the caller of which kind of type to hold consultation;
If new medium type then causes the problem of charging by called introducing;
Fig. 4 and the flow process that Figure 5 shows that no response and automatic station INVITE carries SDP adopt this flow process, and main problem is:
Owing to carry the offer medium among the INVITE for the second time, then the medium of being recalled are the medium of answer, AS has only and will be transferred to the offer medium by the answer medium that be recalled and send (so the offer/answer model match between caller and the AS), answer commentaries on classics offer so just occurs.Answer changes the probability that offer then can increase the media negotiation conflict, also may cause the medium concussion simultaneously.
(rfc3264:An Offer/Answer Modelwith the Session Description Protocol (SDP) is seen in the concrete definition of offer/answer).
Summary of the invention
The present invention proposes a kind of new SDP, the effect of this SDP is to be used to indicate called, and this SDP do not belong to the category that conversation media offer answer consults, and both having solved called this side of preparation medium has foundation, avoid again causing that answer changes the problem of offer, overcome the deficiencies in the prior art.
The present invention proposes a kind of method of calling of indicating terminal medium type, may further comprise the steps: after first user terminal and application server or second user terminal are consulted, initiate calling the 3rd user terminal; Application server sends a request message to the 3rd user terminal, carries terminal media in the request message; The 3rd user terminal is initiated offer based on request message to application server, and the offer that application server is initiated described the 3rd user terminal is transmitted to first user terminal, thereby initiates the negotiation between the 3rd user terminal and first user terminal; First user terminal and the 3rd user terminal consult to finish the laggard words that work.
Wherein, in the step of first user terminal and application server or the negotiation of second user terminal, specifically may further comprise the steps: first user terminal is called out second user terminal by application server; First user terminal and second user terminal are held consultation; Behind the application server wait acknowledge timer expiry, cancellation is to the calling of second user terminal.
Wherein, in the step of first user terminal and application server or second user's negotiation terminal, specifically may further comprise the steps: first user terminal is called out second user terminal by application server; First user terminal and second user terminal are held consultation; First user terminal and second user terminal are conversed.
Wherein, the terminal media in the request message is distinguished by the medium of the definition in specific sign and session initiation protocol (SIP) agreement.
Wherein, the terminal media in the request message is distinguished by the message of the definition in definition Content-Disposition:notice-session and the Session Initiation Protocol.
Wherein, the terminal media that carries in the request message is the medium of first user terminal or the terminal media that application server is revised.
The present invention proposes a kind of calling device of indicating terminal medium type, device comprises: first user terminal, call out second user terminal or application server and with its negotiation, and call out the 3rd user afterwards; Second user or application server are held consultation with described first user, and after negotiation was finished, application server sent a request message to the 3rd user terminal, carries terminal media in the request message; The 3rd user initiates offer based on request message to described application server, and the offer that application server is initiated the 3rd user terminal is transmitted to first user terminal, thereby initiates the negotiation between the 3rd user terminal and first user terminal.
Wherein, the terminal media in the request message is distinguished by the message of the definition in specific sign and session initiation protocol (SIP) agreement.
Wherein, the terminal media in the request message is distinguished by the message of the definition in definition Content-Disposition:notice-session and the Session Initiation Protocol.
Wherein, the terminal media that carries in the request message is the medium of first user terminal or the terminal media that application server is revised.
Adopt the SDP of newtype of the present invention, both having solved called this side of preparation medium and negotiation has foundation, avoids again causing that answer changes the problem of offer, overcomes the deficiencies in the prior art.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is an IMS system reference framework schematic diagram;
Fig. 2 is that the IMS territory is realized user's Call Forwarding No Reply and newly called out the schematic flow sheet that INVITE does not carry SDP;
Fig. 3 is that the IMS territory is realized automatic station and newly called out the schematic flow sheet that INVITE does not carry newtype SDP;
Fig. 4 is that the IMS territory is realized user's Call Forwarding No Reply and newly called out the schematic flow sheet that INVITE carries session SDP;
Fig. 5 is that the IMS territory is realized automatic station and newly called out the schematic flow sheet that INVITE carries session SDP;
Fig. 6 is that the IMS territory is realized user's Call Forwarding No Reply and newly called out the schematic flow sheet that INVITE carries newtype SDP;
Fig. 7 is that the IMS territory is realized automatic station and newly called out the schematic flow sheet that INVITE carries newtype SDP;
Fig. 8 is according to device schematic diagram of the present invention.
Embodiment
The present invention is further illustrated below in conjunction with the drawings and specific embodiments.
In order to address the above problem, the invention provides the SDP that proposes a kind of newtype, this SDP distinguishes it by certain sign with the session SDP that carries out media negotiation.Such as passing through definition Content-Disposition:notice-session.
The application scenarios of this SDP is: for carrying SDP in the initial INVITE, when but AS (service server) initiates new the calling, find that the medium that initial INVITE carries had carried out negotiation, this SDP is carried put into the INVITE new user that breathes out again, then can cause answer to change offer.At this moment, SDP is revised as the SDP of newtype, the SDP that carries newtype with INVITE sends to new user then, guarantees that like this medium of being recalled are the medium of an offer, thereby can not cause that answer changes the operation of offer.
Be example still with Call Forwarding No Reply and automatic station, introduce the SDP signalling diagram afterwards that adopts newtype, still carry medium among the figure with 183 of reliable transmission, be example still with the flow process of not supporting precondition, but adopt the flow process of precondition, and use reliable 180 to carry medium, perhaps have the flow process of update switching media, with exemplary flow and indifference, therefore do not do tired stating.
Fig. 6 is that the IMS territory is realized user's Call Forwarding No Reply and newly called out the schematic flow sheet that INVITE carries newtype SDP, and step is described as follows:
Step 601:UE-A initiates initial session request INVITE to AS, carries the SDP of user A;
Step 602:AS transmits INVITE and gives UE-B;
Step 603-604:UE-B returns 183 responses, carries the SDP of user B;
Step 605-606:UE-A returns PRACK message and gives UE-B;
Step 607-608:UE-B returns 200 (PRACK) message and gives UE-A;
Step 609-610:UE-B returns 180 message and gives UE-A;
User B is in the ring.
AS wait acknowledge timer expiry is cancelled the call attempt to B, is initiated to the call attempt of C then again, is idiographic flow below.
Step 611-614:AS cancels the call attempt to UE-B;
Step 615:AS is initiated to the calling of UE-C, carries the SDP of newtype, determines this SDP not as session SDP by certain type identification, does not participate in the negotiations process of offer/answer; Adopt the sign of Content-Disposition:notice-session among the figure as new media;
Step 616:UE-C returns 183, carries the SDP of UE-C, as the SDP of offer;
Step 617:AS sends to UE-A with the SDP of UE-C by UPDATE;
Step 618:UE-A returns 200, carries the SDP of UE-A;
Step 619:AS sends PRACK to UE-C, carries the SDP of UE-A, as the SDP of answer;
Step 620:UE-C returns 200OK;
Step 621-622:UE-C ring returns 180;
User C is in ringing condition.
Step 623-624:UE-C off-hook is replied, and sends 200OK to UE-A;
Step 625-626:UE-A returns UE-C ACK message;
UE-A and UE-C enter in the conversation.
Step 627-630:UE-C on-hook, end of conversation.
Wherein, the terminal media type does not change the offer/answer progress after the negotiation of described UE-A and application server or UE-B.
Fig. 7 is that the IMS territory realizes that user's automatic station flow process and INVITE carry the schematic flow sheet of SDP, and step is described as follows:
Step 701:UE-A initiates initial session request INVITE to AS, carries the SDP of user A;
Step 702:AS returns 200OK, carries the prompt tone medium;
Step 703:UE-A returns ACK, sets up conversation between UE-A and the AS;
AS is put prompt tone, and finishes the process that collects the digits;
Step 704:AS is initiated to the calling of UE-B, and the number of UE-B is collected the digits by previous step AS and obtains;
Step 705:UE-B returns 183, carries the SDP of UE-B;
Step 706:AS sends to UE-A with medium by re-INVITE;
Step 707:UE-A returns 200OK, carries the SDP of UE-A;
Step 508:AS sends to UE-B with the medium of UE-A by PRACK;
Step 709:UE-B returns 200OK (PRACK);
Step 710:AS returns UE-A ACK message;
Step 711:UE-B returns 180 message;
UE-B enters ringing condition;
AS waits for that UE-B replys timer expiry, then cancels the call attempt to UE-B, collects the digits again and is initiated to new receipts user's calling.
Step 712-715:AS discharges the call attempt to UE-B;
Step 716:AS initiates INVITE, to UE-C, carries the SDP of newtype, determines this SDP not as session SDP by certain type identification, does not participate in the negotiations process of offer/answer; Adopt the sign of Content-Disposition:notice-session among the figure as new media;
Step 717:UE-C returns 183, carries the SDP as offer;
Step 718:AS sends to UE-A with the SDP of UE-C by re-INVITE;
Step 719:UE-A returns 200, carries the SDP of UE-A;
Step 720:AS sends to UE-C with medium SDP by PRACK message, and this SDP is as answer;
Step 721:UE-C returns 200OK;
Step 722:AS returns ACK;
Step 723:UE-C returns 180;
UE-C is in the ring.
Step 724: called off-hook, return 200OK;
Step 725:AS returns ACK and gives UE-C;
A, C user enter in the conversation.
Step 726-729: call out release.
Wherein, issue the medium that the call request of UE-C is carried, may be the UE-A medium, also may be AS amended medium on the terminal media basis, such as IP, the PORT etc. that revise the inside.
According to basic principle of the present invention, the foregoing description also has other mapping modes, and for example: the SDP of newtype is by other sign rather than Content-Disposition:notice-session.
The invention allows for a kind of calling device of indicating terminal medium type,, comprising with reference to Fig. 8 based on SIP: first user terminal, call out second user terminal or application server and with its negotiation, and call out the 3rd user afterwards; Second user or application server are held consultation with described first user, and after negotiation was finished, application server sent a request message to the 3rd user terminal, carries terminal media in the request message; The 3rd user initiates offer based on request message to described application server, and the offer that application server is initiated the 3rd user terminal is transmitted to first user terminal, thereby initiates the negotiation between the 3rd user terminal and first user terminal.
Wherein, request message is distinguished by specific sign and the message in the Session Initiation Protocol.Further, request message is distinguished with the message in the Session Initiation Protocol by definition Content-Disposition:notice-session.
Wherein, the terminal media that carries in the request message is the medium of first user terminal or the terminal media that application server is revised.
The technical staff in field should be understood that, above-mentioned each module of the present invention or each step can realize with the general calculation device, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the storage device and carry out by calculation element, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the method for calling of an indicating terminal medium type is characterized in that, said method comprising the steps of:
After first user terminal and application server or second user terminal are consulted, initiate calling to the 3rd user terminal;
Described application server sends a request message to described the 3rd user terminal, carries terminal media in the described request message;
Described the 3rd user terminal is initiated offer based on described request message to described application server, the described offer that described application server is initiated described the 3rd user terminal is transmitted to described first user terminal, thereby initiates the negotiation between described the 3rd user terminal and described first user terminal;
Described first user terminal and described the 3rd user terminal consult to finish the laggard words that work.
2. method according to claim 1 is characterized in that, in the step of described first user terminal and application server or the negotiation of second user terminal, specifically may further comprise the steps:
Described first user terminal is called out described second user terminal by described application server;
Described first user terminal and described second user terminal are held consultation;
Behind the described application server wait acknowledge timer expiry, cancellation is to the calling of described second user terminal.
3. method according to claim 1 is characterized in that, in the step of described first user terminal and application server or second user's negotiation terminal, specifically may further comprise the steps:
Described first user terminal is called out described second user terminal by described application server;
Described first user terminal and described second user terminal are held consultation;
Described first user terminal and described second user terminal are conversed.
4. method according to claim 1 is characterized in that, the terminal media in the described request message is distinguished by the medium of the definition in specific sign and session initiation protocol (SIP) agreement.
5. method according to claim 1 is characterized in that, the terminal media in the described request message is distinguished by the message of the definition in definition Content-Disposition:notice-session and the described Session Initiation Protocol.
6. method according to claim 1 is characterized in that, the terminal media that carries in the described request message is the medium of described first user terminal or the terminal media that described application server is revised.
7. the calling device of an indicating terminal medium type is characterized in that, described device comprises:
First user terminal, call out second user terminal or application server and with its negotiation, and call out the 3rd user afterwards;
Described second user or application server are held consultation with described first user, and after negotiation was finished, described application server sent a request message to described the 3rd user terminal, carries terminal media in the described request message;
Described the 3rd user, initiate offer based on described request message to described application server, the described offer that described application server is initiated described the 3rd user terminal is transmitted to described first user terminal, thereby initiates the negotiation between described the 3rd user terminal and described first user terminal.
8. device according to claim 7 is characterized in that, the terminal media in the described request message is distinguished by the message of the definition in specific sign and session initiation protocol (SIP) agreement.
9. device according to claim 7 is characterized in that, the terminal media in the described request message is distinguished by the message of the definition in definition Content-Disposition:notice-session and the described Session Initiation Protocol.
10. device according to claim 7 is characterized in that, the terminal media that carries in the described request message is the medium of described first user terminal or the terminal media that described application server is revised.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101675605A CN101998325A (en) | 2009-08-25 | 2009-08-25 | Calling method and device for indicating terminal media type |
| PCT/CN2010/075291 WO2011023041A1 (en) | 2009-08-25 | 2010-07-20 | Calling method and system for indicating terminal media types |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101675605A CN101998325A (en) | 2009-08-25 | 2009-08-25 | Calling method and device for indicating terminal media type |
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| Publication Number | Publication Date |
|---|---|
| CN101998325A true CN101998325A (en) | 2011-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101675605A Pending CN101998325A (en) | 2009-08-25 | 2009-08-25 | Calling method and device for indicating terminal media type |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101998325A (en) |
| WO (1) | WO2011023041A1 (en) |
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| CN103475648A (en) * | 2013-08-29 | 2013-12-25 | 上海斐讯数据通信技术有限公司 | Blind call forwarding method based on SIP (System In Package) protocol and blind call forwarding system |
| CN106658752A (en) * | 2015-11-03 | 2017-05-10 | 中国移动通信集团公司 | Communication resource confirmation method, device and system |
| CN107371140A (en) * | 2016-05-11 | 2017-11-21 | 中国移动通信有限公司研究院 | The processing method and equipment of a kind of Call Forwarding |
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| CN1893427A (en) * | 2005-07-07 | 2007-01-10 | 华为技术有限公司 | Method for conducting business support ability consultation |
| CN101448222A (en) * | 2008-04-01 | 2009-06-03 | 中兴通讯股份有限公司 | Method for realizing IMS centralized service call switching |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2011023041A1 (en) | 2011-03-03 |
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