CN102088518B

CN102088518B - Method for nesting of video phone services, and system thereof

Info

Publication number: CN102088518B
Application number: CN 200910242222
Authority: CN
Inventors: 解焱陆; 郑健平
Original assignee: China Mobile Communications Group Co Ltd
Current assignee: China Mobile Communications Group Co Ltd
Priority date: 2009-12-04
Filing date: 2009-12-04
Publication date: 2013-07-17
Anticipated expiration: 2029-12-04
Also published as: CN102088518A

Abstract

The present invention discloses a method for nesting of video phone services and a system thereof. The method comprises the steps as follows: a calling UE (User Terminal) initiates a video phone call; a calling MSC-S (Mobile Switch Center Server) receives the video phone call; if the calling MSC-S discovers that a fallback occurs to a called UE, the calling MSC-S routes the video phone call to a VP+AS (Video Phone Enhanced Application Server); and the VP+AS establishes a video phone session with the calling UE, and establishes a voice phone session with the called UE. Or the method comprises the steps as follows: the calling UE initiates a video phone call; the calling MSC-S receives the video phone call; if the calling MSC-S discovers that the called UE supports a multimedia ring back tone service, the calling MSC-S routes the video phone call to a MRBT (Multimedia Ring Back Tone) platform; the MRBT platform establishes the video phone session with the calling UE, and plays the multimedia ring back tone customized by the called UE to the calling UE; and after the called UE responses, if the MRBT platform discovers that the called UE supports a VP+ video substitution service, the MRBT platform establishes the video phone session with the VP+AS. The method as well as the system in the present invention realizes nesting of the video phone services.

Description

Visual telephone service nesting method and system

Technical field

The present invention relates to the video telephone technical field, be specifically related to visual telephone service nesting method and system.

Background technology

The Multimedia Ring Back Tone service of video telephone be one at time-division (TD, Time Division) in the circuit domain video telephone business, customized by the called subscriber, dial when called in the video telephone mode when caller, system substitutes the business of common ring-back tone for the calling subscriber provides one section gorgeous, melodious multimedia video in called terminal ringing.User applies is opened after the Multimedia Ring Back Tone service, and the multimedia audible ringing tone content can be set voluntarily, is used for when the user makes called terminal ringing, for customized multimedia video is play in caller.

Video telephone strengthens (VP+) professional falling at video telephone to be improved, and guarantees that as far as possible the calling subscriber can experience visual telephone service.When falling is because callee side (comprising network and terminal) when reason causes, Calling Side is still connected with video telephone, and callee side is then used the voice closing of the circuit, thereby makes the calling subscriber can experience visual telephone service.At this moment, caller is seen is the video that network transmits, and can hear called voice simultaneously, and called what then experience is common audio call, can carry out normal voice call with caller.In addition, when normal talking, use this professional 3G subscription when carrying out video calling, to transmit a video clipping that sets in advance and to give the other side of conversation to substitute the video image of itself.The user can select the video clipping of different expressions to be shown to the other side according to current mood.

Prior art can only be supported a kind of video traffic in the video telephone.Visual telephone video value-added service at present is a lot, and the prior art scheme can not support nested between the video traffic and call, cause the user to open a class video traffic after, can't open other video traffic again.For example: behind the customized Multimedia Ring Back Tone service of called subscriber, customized VP+ business more just, like this, when callee side produces when falling phenomenon after rise, the calling and called both sides can only carry out voice call; Simultaneously, the called subscriber also can't show substitution video to the calling subscriber.

Summary of the invention

The invention provides visual telephone service nesting method and system, to realize the nested of visual telephone service.

Technical scheme of the present invention is achieved in that

A kind of visual telephone service nesting method, this method comprises:

Call subscriber terminal UE initiates video phone call, calling mobile exchanging center server MSC-S receives this video phone call, find that called UE falls phenomenon after rise, then this video phone call is routed to video telephone and strengthens application server VP+AS, VP+AS and calling UE are set up videophone session, set up voice telephone conversation with called UE.

Described caller MSC-S finds that called UE falls phenomenon after rise and comprises:

Caller MSC-S receives the video phone call from calling UE, ask called route to called attaching position register HLR, called HLR is found the called Multimedia Ring Back Tone service of having contracted, then notify caller MSC-S, caller MSC-S is routed to multimedia color ring back tone MRBT platform with video phone call, and the MRBT platform is routed to called MS C-S with video phone call, and called MS C-S detects called state, find the called phenomenon that falls after rise, then by MRBT platform notice caller MSC-S.

Described called MS C-S detects called state, finds that the called phenomenon that falls after rise comprises:

Called MS C-S finds the signatory Multimedia Ring Back Tone service of called subscriber and is sitting in the 3G net, but current terminal called is not supported visual telephone service;

Perhaps, called MS C-S find the signatory Multimedia Ring Back Tone service of called subscriber and be sitting in the 3G net, current terminal called also supports visual telephone service, but the wireless signal of terminal called position does not cover visual telephone service;

Perhaps, the signatory Multimedia Ring Back Tone service of called subscriber and be sitting in the 3G net and current terminal called is also supported visual telephone service, but the called subscriber selects to answer with speech form.

Described VP+AS and calling UE are set up videophone session, set up voice telephone conversation with called UE and comprise:

VP+AS initiates audio call to GMSC (gateway mobile switching center) GMSC, GMSC is to the called route of called HLR request, and according to request to called route audio call is routed to called UE by called MS C-S, after the called UE ring, called MS C-S initiates audio call to VP+AS, VP+AS initiates video phone call to calling UE, sets up videophone session with calling UE.

A kind of visual telephone service nesting method, this method comprises:

Calling UE is initiated video phone call, caller MSC-S receives this video phone call, find called support Multimedia Ring Back Tone service, then video phone call is routed to the MRBT platform, the MRBT platform receives this video phone call and set up videophone session with calling UE behind called terminal ringing, plays the customized multimedia color ring back tone of called UE to calling UE;

Behind the called party answer, the MRBT platform is found called support VP+ video substitution service, sets up videophone session with VP+AS, and VP+AS sends to calling UE by the MRBT platform with called subscriber's substitution video.

Described caller MSC-S finds that called support Multimedia Ring Back Tone service comprises:

Caller MSC-S is to the called route of called HLR request, and called HLR is found called signatory Multimedia Ring Back Tone service, then notifies caller MSC-S.

Described MRBT platform and VP+AS set up and further comprise after the videophone session: MRBT platform and called UE are set up videophone session, and calling subscriber's video is sent to called UE.

The nested system of a kind of visual telephone service, this system comprises:

Caller MSC-S receives the video phone call that calling UE is initiated, and finds that called UE falls phenomenon after rise, then video phone call is routed to VP+AS;

VP+AS receives the video phone call that caller MSC-S sends, and sets up videophone session with calling UE, sets up voice telephone conversation with called UE.

Described caller MSC-S further comprises: be used for when the video phone call that receives from calling UE, send the routing iinformation that carries the called UE number to called HLR and send message, the called route of returning according to called HLR and the information of called support Multimedia Ring Back Tone service route the call to the module of MRBT platform;

And described system further comprises called HLR, is used for receiving the routing iinformation transmission message that caller MSC-S sends, if find the called Multimedia Ring Back Tone service of having contracted, then the information with called route and called support Multimedia Ring Back Tone service returns to caller MSC-S;

And described system further comprises the MRBT platform, is used for receiving the video phone call that caller MSC-S sends, and video phone call is routed to called MS C-S;

And described system further comprises called MS C-S, is used for receiving the video phone call that the MRBT platform is sent, and detects the called UE state, if find that called UE falls phenomenon after rise, then by MRBT platform notice caller MSC-S.

Described system further comprises: GMSC,

And described VP+AS further comprises: be used for initiating audio call to GMSC after receiving the video phone call that caller MSC-S sends, after receiving the audio call that called MS C-S sends, initiate the module of video phone call to calling UE;

And described GMSC is used for, and receives the audio call that VP+AS sends, to the called route of called HLR request, and according to request to called route audio call is routed to called UE by called MS C-S;

And described called MS C-S further comprises: be used for initiating the module of audio call to VP+AS after the called UE ring.

The nested system of a kind of visual telephone service, this system comprises:

Caller MSC-S receives the video phone call that calling UE is initiated, and finds called support Multimedia Ring Back Tone service, then video phone call is routed to the MRBT platform;

The MRBT platform receives the video phone call that caller MSC-S sends, and sets up videophone session with calling UE behind called terminal ringing, plays the customized multimedia color ring back tone of called UE to calling UE; Behind the called party answer, find called support VP+ video substitution service, set up videophone session with VP+AS;

VP+AS sends to calling UE by the MRBT platform with called subscriber's substitution video.

Described caller MSC-S further comprises: be used for sending the module that the routing iinformation that carries the called UE number sends message to called HLR after receiving the video phone call that caller MSC-S sends;

Called HLR receives the routing iinformation transmission message that caller MSC-S sends, the Multimedia Ring Back Tone service if the discovery called UE has been contracted, and then the information with called route and called support Multimedia Ring Back Tone service returns to caller MSC-S.

Described MRBT platform further comprises: be used for setting up videophone session with called UE, calling subscriber's video sent to the module of called UE.

Compared with prior art, among the present invention, when calling UE is initiated video phone call, if caller MSC-S finds that called UE falls phenomenon after rise, then this video phone call is routed to VP+AS, VP+AS and calling UE are set up videophone session, set up voice telephone conversation with called UE; Perhaps, calling UE is initiated video phone call, if caller MSC-S finds called support Multimedia Ring Back Tone service, then video phone call is routed to the MRBT platform, MRBT platform and calling UE are set up videophone session, play the customized multimedia color ring back tone of called UE to calling UE; Behind the called party answer, the MRBT platform is found called support VP+ video substitution service, sets up videophone session with VP+AS.The present invention has realized that visual telephone service is nested, makes that called caller still can be seen called video when falling phenomenon after rise, also makes in a session, and caller both can hear that called customized multimedia color ring back tone also can see called substitution video.

Description of drawings

The nested flow chart of visual telephone service that Fig. 1 provides for the embodiment of the invention one;

The nested flow chart of visual telephone service that Fig. 2 provides for the embodiment of the invention two;

The nested system of the visual telephone service composition diagram that Fig. 3 provides for the embodiment of the invention three.

Embodiment

The present invention is further described in more detail below in conjunction with drawings and the specific embodiments.

The nested flow chart of visual telephone service that Fig. 1 provides for the embodiment of the invention one, present embodiment at be that as shown in Figure 1, its concrete steps are as follows in called VP+ business when falling phenomenon after rise:

Step 101: subscriber equipment (UE, User Equipment) A foundation (set up) message that makes a call, this message is carried calling number: UE A number, called number: UE B number.

Mobile Switching Center Server (the MSC-S at step 102:UE A place, Mobile Switching Center-Server): MSC-S A receives this set up message, determine the attaching position register (HLR of UE B according to called number, Home Location Register): HLR B, send routing iinformation to HLR B and send (SRI, Send Routing Information) message, this SRI message is carried called number.

Step 103:HLR B receives SRI message, and the MSC-S:MSC-S B that belongs to UE B sends (PRN, the Provide Roaming Number) message that Provides Roaming Number, and this message is carried called number.

Step 104:MSC-S B receives PRN message, returns PRN to HLR B and confirms (PRN_ack) message, and this message is carried called number and called mobile station roaming number (MSRN, Mobile StationRoaming Number).

Step 105:HLR B receives PRN_ack message, finds the UE B Multimedia Ring Back Tone service of having contracted according to called number, returns SRI_ack message to MSC-S A, and this message is carried called number, called MS RN and multimedia color ring back tone Supplementary Service Code SS_Code.

Step 106:MSC-S A receives SRI_ack message, returns call treatment (Callproceeding) message to UE A.

Step 106-1:MSC-S A learns the called multimedia color ring back tone user that is according to the SS_Code in the SRI_ack message, then to multimedia color ring back tone (MRBT, Multimedia Ringback Tone) platform sends initial address message (IAM, Initial Address Message), this IAM carries conversation on video telephone (Video) sign, 17254+ called number, called MS RN.

Wherein, 17254 expression IAM message should be routed to the MRBT platform.

Step 106-2:MRBT platform receives IAM, sends IAM to MSC-S B, and this IAM carries Video sign, calling number, called number, called MS RN.

Step 106-3:MSC-S B receives IAM, finds the called phenomenon that falls after rise, determines to fall after rise reason.

Step 106-4:MCS-S B sends to the MRBT platform and discharges (REL) message, and this message is carried and fallen cause value, calling number, called number, called MS RN after rise.

Fall cause value after rise and mainly contain following three kinds of situations:

One, cause value 4: called signatory but current terminal is not supported.At this moment, the signatory Multimedia Ring Back Tone service of called subscriber, and be sitting in the 3G net, but current terminal called is not supported visual telephone service.

Two, cause value 5: called residing radio coverage is not supported.At this moment, the signatory Multimedia Ring Back Tone service of called subscriber and be sitting in the 3G net, current terminal called also supports visual telephone service, but the wireless signal of terminal called position does not cover visual telephone service.

Three, cause value 6: called selection is answered with speech form.At this moment, the signatory Multimedia Ring Back Tone service of called subscriber and be sitting in the 3G net and current terminal called is also supported visual telephone service, but the called subscriber selects for example to answer with speech form: owing to not wanting to be seen or reason such as rate causes.

Step 106-5:MRBT platform receives REL message, and this REL message is transmitted to MSC-S A.

Step 107～108:MSC-S A receives REL message, to GMSC (gateway mobile switching center) (GMSC, Gateway Mobile Switching Center) sends IAM, this message is carried the video sign, is fallen cause value, calling number, 17254+ called number, called MS RN after rise, GMSC is transmitted to VP+ application server (AS, Application Server) with IAM.

Step 109:VP+AS receives IAM, according to falling cause value after rise, determines and should set up the voice call conversation with called that return IAM to GMSC, this message is carried voice call conversation (voice) sign, calling number, called number.

Step 110:GMSC receives IAM, sends SRI message to HLR B, and this message is carried called number.

Step 111:HLR B receives SRI message, sends PRN message to MSC-S B, and this message is carried called number.

Step 112:MSC-S B receives PRN message, returns PRN_ack message to HLR B, and this message is carried called number, called MS RN.

Step 113:HLR B receives PRN_ack message, sends SRI_ack message to GMSC, and this message is carried called number, called MS RN.

Step 114:GMSC receives SRI_ack message, sends IAM to MSC-S B, and this message is carried voice sign, called number, called MS RN.

Step 115～116:MSC-S B receives IAM, sends paging (Paging) message to UE B, and UE B receives Paging message, returns paging to MSC-S B and confirms (Paging_ack) message.

Step 117～118:MSC-S B receives Paging_ack message, sends Set up message to UE B, and this message is carried the voice sign, and UE B receives Set up message, returns to call out to MSC-S B and confirms (Call Confirmed).

Step 119: called terminal ringing, UE B sends ring (Alerting) message to MCS-S B.

Step 120～121:MCS-S B receives Alerting message, sends address complete message (ACM, Address Complete Message) by GMSC to VP+AS, and this ACM carries voice sign, called number.

Step 122～123:VP+AS receives ACM, sends ACM by GMSC to MSC-S A, and this ACM carries video sign, calling number.

Step 124: called party answer, UE B send to MSC-S B and connect (Connect) message.

Step 125～127:MSC-S B receives Connect message, returns to connect to UE B and confirms (Connect_ack) message, simultaneously, sends response message (ANM, Answer Message) by GMSC to VP+AS, and this ANM carries voice sign, called number.

Step 128～129:VP+AS receives ANM, sends ANM by GMSC to MSC-S A, and this ANM carries video sign, calling number.

Step 130～131:MSC-S A receives ANM, sends Connect message to UE A, and UE A receives Connect message, returns Connect_ack message to MSC-S A.

Step 132:UE A and VP+AS set up H.245 videophone session.

Calling course of video telephone is carried out in step 133:VP+AS and caller, and called video is sent to UE A; Simultaneously, VP+AS and the called voice call communication process that carries out send to UE B with the voice of caller.

Step 134: Called Onhook, UE B send to disconnect to MSC-S B and connect (Disconnect) message.

Step 135:MSC-S B receives Disconnect message, returns REL message to UE B.

Step 136～138:UE B receives REL message, returns to discharge to MSC-S B and finishes (RLC, Release Complete) message, and MSC-S B receives RLC message, sends REL message by GMSC to VP+AS.

Step 139～140:VP+AS receives REL message, returns RLC message by GMSC to MSC-B.

H.245 videophone session between step 141:VP+AS dismounting and the UE A.

Step 142～144:H.245 videophone session is removed and is finished, and VP+AS sends REL message by GMSC to MSC-S A, and MSC-S A receives REL message, sends Disconnect message to UE A.

Step 145:UE A receives Disconnect message, returns REL message to MSC-S A.

Step 146～148:MSC-S A receives REL message, returns RLC message to UE A, returns RLC message by GMSC to VP+AS simultaneously.

The nested flow chart of visual telephone service that Fig. 2 provides for the embodiment of the invention two, present embodiment at be VP+ video substitution service, as shown in Figure 2, its concrete steps are as follows:

Step 201:UE A initiates set up message, and this message is carried calling number: UE A number, called number: UE B number.

The MSC-S A at step 202:UE A place receives this set up message, determines the HLR:HLR B of UE B according to called number, sends SRI message to HLR B, and this SRI message is carried called number.

Step 203:HLR B receives SRI message, and to the MSC-S:MSC-S B transmission PRN message of UE B ownership, this message is carried called number.

Step 204:MSC-S B receives PRN message, returns PRN_ack message to HLR B, and this message is carried called number and called MS RN.

Step 205:HLR B receives PRN_ack message, find called Multimedia Ring Back Tone service and the VP+ video substitution service of having contracted according to called number, return SRI_ack message to MSC-S A, this message is carried called number, called MS RN and multimedia color ring back tone Supplementary Service Code, the VP+ video substitutes Supplementary Service Code.

Step 206:MSC-S A receives SRI_ack message, returns Call proceeding message to UE A.

Step 207:MSC-S A learns the called multimedia color ring back tone user that is according to the multimedia color ring back tone Supplementary Service Code in the SRI_ack message, then sends IAM to the MRBT platform, and this IAM carries calling number, called number, called MS RN.

Step 208:MRBT platform receives IAM, sends IAM to MSC-S B, and this message is carried calling number, called number, called MS RN.

Step 209～210:MSC-S B receives IAM message, sends Paging message to UE B, and UE B receives Paging message, returns Paging_ack message to MSC-S B.

Step 211～212:MSC-S B receives Paging_ack message, sends Set up message to UE B, and UE B receives Set up message, returns Call Confirmed message to MSC-S B.

Step 213: called terminal ringing, UE B sends Alerting message to MCS-S B.

Step 214～215:MCS-S B receives Alerting message, sends ACM message to the MRBT platform, and this message is carried called number; The MRBT platform receives ACM message, and this message is transmitted to MCS-S A.

Step 216～217:MCS-S A receives ACM message, sends Alerting message to UE A, sends Connect message to UE A simultaneously, and UE A receives Alerting message, and terminal shows timing.

Step 218:UE A receives Connect message, returns Connect_ACK message to MSC-S A.

Step 219:UE A and MRBT platform are set up H.245 videophone session.

Step 220～221:H.245 videophone session is set up and is finished, and the MRBT platform sends DTMF (CC) message to UE A, and indicating terminal is not-time, and beginning is play called customized multimedia color ring back tone to UE A.

Step 222: called party answer, UE B send to MSC-S B and connect (Connect) message.

Step 223:MSC-S B receives Connect message, sends ANM to the MRBT platform, and this message is carried called number.

Step 224:MRBT platform receives ANM, according to called number, finds the called VP+ video substitution service of having contracted, and then sends IAM by GMSC to VP+AS, and this IAM carries video sign, 17256+ called number.

17256 are used to indicate IAM should be routed to VP+AS.

Called meeting is in advance to the signatory VP+ video substitution service of MRBT platform.

Step 225:VP+AS receives IAM, sets up the video telephone signaling with the MRBT platform and calls out.

Main and the mutual signalling system No.7 of MRBT platform of this step VP+AS.

Step 226:VP+AS and MRBT platform are set up H.245 videophone session.

Step 227:MSC-S B returns Connect_ack message according to the Connect message that receives to UE B.

Step 228～229:MRBT platform sends ANM according to the ANM that receives to MSC-S A, and MSC-S A sends DTMF (CD) message to UE A, and the indication calling terminal picks up counting.

Step 230:MRBT platform and UE A set up H.245 videophone session.

Step 231:UE A and UE B carry out calling course of video telephone, and VP+AS sends to UE A with the substitution video of UE B, and the video of UE A is sent to UE B.

VP+AS has preserved the substitution video of UE B.

Step 232～234: Called Onhook, UE B and MRBT platform enter H.245 videophone session demolishing process; Simultaneously, the H.245 videophone session between the dismounting of MRBT platform and the VP+AS, the H.245 videophone session between dismounting and the UE A.

Step 235～236:H.245 videophone session is removed and is finished, and UE B sends Disconnect message to MSC-S B.

Step 236～237:MSC-S B receives Disconnect message, sends REL message to the MRBT platform, returns REL message to UE B simultaneously.

Step 238:UE B receives REL message, returns RLC message to MSC-S B.

Step 239:MRBT platform receives REL message, sends REL message to MSC-A.

Step 240:MSC-A receives REL message, sends Disconnect message to UE A.

Step 241:MRBT platform returns RLC message to MSC-S B.

Step 242:MSC-S A returns RLC message to the MRBT platform.

Step 243:UE A receives Disconnect message, sends REL message to MSC-S A.

Step 244:MSC-S A receives REL message, returns RLC message to UE A.

The nested system of the visual telephone service composition diagram that Fig. 3 provides for the embodiment of the invention one, present embodiment at be in called VP+ business when falling phenomenon after rise, as shown in Figure 3, it mainly comprises: calling UE 31, caller MSC-S 32, called HLR 33, MRBT platform 34, GMSC 35, VP+AS 36, called MS C-S 37 and called UE 38, wherein:

Calling UE 31: initiate set up message.

Caller MSC-S 32: receive the set up message that calling UE 31 is initiated, send the SRI message of carrying called number to called HLR 33, receive the SRI_ack message of carrying called MS RN that called HLR 33 is returned, find that this SRI_ack message carries multimedia color ring back tone Supplementary Service Code SS_Code, then send IAM message to MRBT platform 34, this IAM message is carried Video sign and called MS RN; Receive the REL message of carrying the falling cause value that MRBT platform 34 is sent, send the IAM message of carrying the video sign by GMSC 35 to VP+AS 36; Receive VP+AS 36 and transmit the next ACM message of carrying the video sign by GMSC 35; Receive VP+AS 36 and transmit the next ANM that carries the video sign by GMSC 35, send the Connect message to calling UE 31.

Called HLR 33: receive the SRI message that caller MSC-S 32 sends, if find the called Multimedia Ring Back Tone service of having contracted, then return the SRI_ack message of carrying called MS RN and multimedia color ring back tone Supplementary Service Code SS_Code to caller MSC-S 32.

MRBT platform 34: receive the IAM message that caller MSC-S 32 sends, this message is transmitted to called MS C-S 37; Receive the REL message that called MS C-S 37 sends, find that this message carries the falling cause value, this REL message is transmitted to caller MSC-S 32;

GMSC 35: receive the IAM message of carrying the voice sign that VP+AS 36 sends, send the IAM message of carrying the voice sign to called MS C-S 37; The ACM message of carrying the voice sign that called MS C-S 37 is sent is transmitted to VP+AS 36.

VP+AS 36: receive the IAM message of carrying the video sign that caller MSC-S 32 sends, send the IAM message of carrying the voice sign to GMSC 35; Receive called MS C-S 37 and transmit the next ACM message of carrying the voice sign by GMSC 35, send the ACM message of carrying the video sign by GMSC 35 to caller MSC-S 32; Receive the ANM that carries the voice sign that called MS C-S 37 sends by GMSC 35, send the ANM that carries the video sign by GMSC 35 to caller MSC-S 32, set up H.245 videophone session with calling UE 31, the voice of caller are sent to called UE 38, called video is sent to calling UE 31.

Called MS C-S 37: receive the IAM message that MRBT platform 34 is sent, detect called state, if find the called phenomenon that falls after rise, then return REL message to MRBT platform 34, this REL message is carried the falling cause value; Receive the IAM message of carrying the voice sign that GMSC 35 sends, send the set up message of carrying the voice sign to called UE 38, behind called terminal ringing, return the ACM message of carrying the voice sign to VP+AS 36 by GMSC 35; Find called party answer, send the ANM that carries the voice sign by GMSC 35 to VP+AS 36.

Called UE 38: receive the set up message of carrying the voice sign that called MS C-S 37 sends, return Call Confirmed message to called MS C-S 37.

Below provide the nested system of visual telephone service that the embodiment of the invention two provides, present embodiment at be VP+ video substitution service, this system mainly comprises: calling UE, caller MSC-S, called HLR, MRBT platform, GMSC, VP+AS, called MS C-S and called UE, wherein:

Calling UE: initiate set up message, receive Alerting message and Connect message that caller MSC-S sends, set up H.245 videophone session with the MRBT platform.

Caller MSC-S: receive the set up message that calling UE is initiated, send the SRI message of carrying called number to called HLR, receive the SRI_ack message of carrying called MS RN that called HLR is returned, find that this SRI_ack message carries the multimedia color ring back tone Supplementary Service Code, then send IAM message to the MRBT platform; Receive the ACM message that the MRBT platform is sent, send Alerting message and Connect message to calling UE; Receive the ANM that the MRBT platform is sent.

Called HLR: receive the SRI message that caller MSC-S sends, if find called Multimedia Ring Back Tone service and the VP+ video substitution service of having contracted, then return to caller MSC-S and carry the SRI_ack message that called MS RN and multimedia color ring back tone Supplementary Service Code, VP+ video substitute Supplementary Service Code.

MRBT platform: receive the IAM message that caller MSC-S sends, this message is transmitted to called MS C-S; Receive the ACM message that called MS C-S sends, this message is transmitted to caller MSC-S; After setting up H.245 videophone session with calling UE, play called customized multimedia color ring back tone to calling UE; Receive the ANM that called MS C-S sends, find the called VP+ video substitution service of having contracted, send the IAM message of carrying the video sign to VP+AS by GMSC, carrying out the video telephone signaling with VP+AS consults, set up H.245 videophone session with VP+AS, set up H.245 videophone session with called UE.

GMSC: the IAM message of carrying the video sign that the MRBT platform is sent is transmitted to VP+AS.

VP+AS: receive the MRBT platform and transmit the next IAM message of carrying the video sign by GMSC, carrying out the video telephone signaling with the MRBT platform consults, set up H.245 videophone session with the MRBT platform, called substitution video is sent to calling UE by the MRBT platform, the video of caller is sent to called UE by the MRBT platform.

Called MS C-S: receive the IAM message that the MRBT platform is sent, to called transmission set up message, find called terminal ringing, send ACM message to the MRBT platform; Find called party answer, send ANM to the MRBT platform.

Called UE: receive the set up message that called MS C-S sends, return CallConfirmed message to called MS C-S.

The nested solution of visual telephone service provided by the invention can be applied in the 3G net.

The above only is process of the present invention and method embodiment, not in order to limiting the present invention, all any modifications of making within the spirit and principles in the present invention, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims

1. a visual telephone service nesting method is characterized in that, this method comprises:

Call subscriber terminal UE initiates video phone call, calling mobile exchanging center server MSC-S receives this video phone call, ask called route to called attaching position register HLR, called HLR is found the called Multimedia Ring Back Tone service of having contracted, then notify caller MSC-S, caller MSC-S is routed to multimedia color ring back tone MRBT platform with video phone call, the MRBT platform is routed to called MS C-S with video phone call, called MS C-S detects called state, find the called phenomenon that falls after rise, then by MRBT platform notice caller MSC-S, caller MSC-S is routed to video telephone with this video phone call and strengthens application server VP+AS, VP+AS and calling UE are set up videophone session, set up voice telephone conversation with called UE.

2. the method for claim 1 is characterized in that, described called MS C-S detects called state, finds that the called phenomenon that falls after rise comprises:

3. the method for claim 1 is characterized in that, described VP+AS and calling UE are set up videophone session, sets up voice telephone conversation with called UE and comprises:

4. a visual telephone service nesting method is characterized in that, this method comprises:

5. method as claimed in claim 4 is characterized in that, described caller MSC-S finds that called support Multimedia Ring Back Tone service comprises:

6. method as claimed in claim 4 is characterized in that, described MRBT platform and VP+AS set up and further comprise after the videophone session: MRBT platform and called UE are set up videophone session, and calling subscriber's video is sent to called UE.

7. nested system of visual telephone service is characterized in that this system comprises:

VP+AS receives the video phone call that caller MSC-S sends, and sets up videophone session with calling UE, sets up voice telephone conversation with called UE;

Called HLR receives the routing iinformation transmission message that caller MSC-S sends, if find the called Multimedia Ring Back Tone service of having contracted, then the information with called route and called support Multimedia Ring Back Tone service returns to caller MSC-S;

The MRBT platform receives the video phone call that caller MSC-S sends, and video phone call is routed to called MS C-S;

Called MS C-S receives the video phone call that the MRBT platform is sent, and detects the called UE state, if find that called UE falls phenomenon after rise, then by MRBT platform notice caller MSC-S.

8. system as claimed in claim 7 is characterized in that, described system further comprises: GMSC,

9. nested system of visual telephone service is characterized in that this system comprises:

10. system as claimed in claim 9 is characterized in that,

11., it is characterized in that described MRBT platform further comprises as claim 9 or 10 described systems: be used for setting up videophone session with called UE, calling subscriber's video sent to the module of called UE.