Summary of the invention
First purpose of the present invention is at being connected across the deficiency that exists between calling terminal switch and the terminal called switch because of the video frequency color ring platform in the prior art, a kind of method of telecasting video frequency color ring is provided, and this method can be avoided when beginning to set up the calling connection through the video frequency color ring platform.Second purpose of the present invention is after stopping telecasting video frequency color ring, and speech channel still connects through the video frequency color ring platform, and minimizing causes the situation of alternative channel and reduces the high performance requirement of video frequency color ring platform.
For realizing above-mentioned first purpose, the invention provides the method that a kind of video frequency color ring is play.This method comprises:
Step 1: calling terminal makes a call the terminal called request to the terminal called switch by the calling terminal switch;
Step 2: described terminal called switch is sent to described calling terminal switch with the state information of described terminal called; The calling terminal switch returns the ring signaling to calling terminal simultaneously, the expression terminal called free time;
Step 3: described calling terminal switch is initiated the request of telecasting video frequency color ring to the video frequency color ring platform;
Step 4: described video frequency color ring platform according to the CAMEL-Subscription-Information of described terminal called to described calling terminal telecasting video frequency color ring.
For realizing above-mentioned second purpose, set up after calling with the calling terminal user links when terminal called user off-hook, after above-mentioned steps 3, also comprise following operation:
Step 5: network side judges whether calling terminal and terminal called have set up call link, and as setting up, then execution in step 6; As not setting up execution in step 4;
Step 6: video frequency color ring platform and calling terminal disconnect and being connected, and set up video telephone speech channel between calling terminal and the terminal called by caller switch and called switch.
By such scheme as can be known, the invention provides that to set up between a kind of calling terminal and the terminal called during the video telephone be that the video frequency color ring platform is to calling terminal displaying video information; After call link was set up, the video telephone path was set up by caller switch and called switch.Therefore, the present invention has the following advantages: when the calling subscriber makes a call connection request, do not need to set up through the video frequency color ring platform, simultaneously in the process of calling and called user's communication, do not need to take the speech channel of video frequency color ring platform, save the relay resource between net, network configuration is reasonable, can insert more video frequency color ring user and guarantee high traffic; Color ring platform is relatively independent, even go wrong, just has influence on the broadcast of video frequency color ring, can not have influence on conversation and reduce the performance requirement very high to the video frequency color ring platform.
Below in conjunction with drawings and Examples, technical scheme of the present invention is described in further detail.
Embodiment
Be implemented in the 3G circuit domain video telephone business, by the terminal called customization, when the calling terminal user dials terminal called in the video telephone mode, system in dialed terminal bell for the calling terminal user provide one section gorgeous, melodious multimedia video for example literal, picture or media content substitute common ring-back tone business referring to Fig. 2 and Fig. 3, a kind of new connected system is provided: the video frequency color ring platform is to be connected on the calling terminal switch.In the scheme that the video frequency color ring that stating in realization provides terminal called to customize to calling terminal is play, requirement to equipment is: extending video CRBT sign in switch SRI ACK and BICC IAM signaling comprises that at least service bearer type, video frequency color ring supplementary service code, identification services type comprise: TS11 indicates voice CRBT field and BS30 indicates the video frequency color ring field.Critical point switching center (GMSC Server) identification video CRBT sign is initiated the video phone call to the video frequency color ring platform when receiving the ACM signaling of terminal called transmission; When GMSC Server receives the ANM signaling of MSC (TMSC Server) at terminal called place, initiate the disconnect circuit signaling to the video frequency color ring platform.And in attaching position register (HLR), increase user video Ring Back Tone service field.
Embodiment 1
The player method of the video frequency color ring of realizing based on said system be the operational flowchart ofembodiment 1 referring to Fig. 4, and terminal called provides the concrete steps of video frequency color ring as follows to calling terminal during being implemented in wait terminal called off-hook and setting up conversation on video telephone:
Step 401: calling terminal is initiated the request of video phone call terminal called to the terminal called switch by the calling terminal switch;
Step 402: whether the terminal called switch has customized video color ring service, as has customized business to the CAMEL-Subscription-Information of network side attaching position register (HLR) inquiry terminal called, and then execution instep 403; As the un-customized business, then finish;
Step 403: the terminal called switch is sent to the calling terminal switch with the CAMEL-Subscription-Information and the state information of terminal called; The calling terminal switch returns the ring signaling to calling terminal simultaneously, the expression terminal called free time;
Step 404: the request message of the CAMEL-Subscription-Information of terminal called to video frequency color ring platform initiation telecasting video frequency color ring carries in the critical point switching center in the calling terminal switch;
Step 405: the video frequency color ring platform provides video frequency color ring to play by the calling terminal switch to calling terminal according to signatory message;
Step 406: network side judges whether calling terminal and terminal called have set up call link, and as setting up, then execution instep 407; As not setting up execution instep 405;
Step 407: video frequency color ring platform and calling terminal disconnect and being connected, and set up video telephone speech channel between calling terminal and the terminal called by calling terminal switch and terminal called switch.
Realize the signaling process figure of embodiments of theinvention 1 referring to Fig. 5, know the business customizing situation of terminal called by requester network side HLR, calling terminal and terminal called call setup flow process concrete steps are as follows:
Step 501: calling terminal makes a call to terminal called, and the MSC at calling terminal place initiates SRI inquiring position information to HLR;
Step 502:HLR sends out PRN to the MSC at terminal called place, seeks Mobile Station Roaming Number (MSRN);
Step 503: the MSC at terminal called place distributes MSRN, returns the PRN_ACK signaling to HLR;
Step 504:HLR sends out SRI_ACK to the MSC at calling terminal place, and sends MSRN and video frequency color ring sign;
Step 505: the MSC at calling terminal place utilizes MSRN to seek the MSC route at terminal called place;
Step 506: the MSC at terminal called place handles called paging (Paging), sends beep-page message;
Step 507: the MSC at terminal called place sends address information (ACM) to the MSC at calling terminal place;
Step 508: the MSC at calling terminal place returns the alerting signaling to calling terminal, the expression terminal called free time;
Step 509: the critical point switching center at calling terminal place initiates IAM to the video frequency color ring platform, and has the video frequency color ring sign;
Step 510: the video frequency color ring platform is to the MSC at calling terminal place echo reply message (ANM);
Step 511: set up H.245 channel between calling terminal and the video frequency color ring platform;
Step 512: the user of calling terminal watches video frequency color ring;
Step 513: the MSC of terminal called by the place replys to the MSC at the calling terminal place link that makes a call;
Step 514: the critical point switching center at calling terminal place initiates link to the video frequency color ring platform and discharges request (release);
Step 515: remove H.245 channel between calling terminal and the video frequency color ring platform, the video frequency color ring platform returns to the MSC at calling terminal place and removes success message (RELEASE COMPLATE);
Step 516: set up H.245 channel between calling terminal and the terminal called, realize setting up 3G circuit domain video telephone communication process between calling terminal and the terminal called.
Embodiment 2
In the present embodiment, user's CAMEL-Subscription-Information is kept in the video frequency color ring platform local data base, when terminal called is in idle condition, the terminal called off-hook is set up terminal called during the conversation on video telephone provides process from video frequency color ring to calling terminal, specifically, be the concrete operations flow chart of the embodiment of the invention 2 referring to Fig. 6:
Step 601: calling terminal is initiated the request of video phone call terminal called to the terminal called switch by the calling terminal switch;
Step 602: the terminal called switch is sent to the calling terminal switch with the state information of terminal called; The calling terminal switch returns the ring signaling to calling terminal simultaneously, the expression terminal called free time;
Step 603: the calling terminal switch is initiated the request message of telecasting video frequency color ring to the video frequency color ring platform;
Step 604: the user who deposits in the video frequency color ring platform searching platform database message of contracting, whether customize video color ring service, as customized business, then execution instep 605; As the un-customized business, then finish;
Step 605: the video frequency color ring platform provides video frequency color ring to play by the calling terminal switch to calling terminal;
Step 605: network side judges whether calling terminal and terminal called have set up call link, and as setting up, then execution instep 606; As not setting up execution instep 604;
Step 606: video frequency color ring platform and calling terminal disconnect and being connected, and set up video telephone speech channel between calling terminal and the terminal called by calling terminal switch and terminal called switch.
Realize the signaling process figure of the embodiment of the invention 2 referring to Fig. 7, know the business customizing situation of terminal called by inquiry video frequency color ring platform; Calling terminal and terminal called call setup flow process concrete steps are as follows:
Step 701: calling terminal makes a call to terminal called, and the MSC at calling terminal place initiates SRI inquiring position information to HLR;
Step 702:HLR sends out PRN to the MSC at terminal called place, seeks Mobile Station Roaming Number (MSRN);
Step 703: the MSC at terminal called place distributes MSRN, returns PRN_ACK to HLR;
Step 704:HLR sends out SRI_ACK to the MSC at calling terminal place, and sends MSRN;
Step 705: the MSC at calling terminal place utilizes MSRN to seek the MSC route at terminal called place;
Step 706: the MSC at terminal called place handles called paging (Paging), sends beep-page message;
Step 707: the MSC at terminal called place sends address information (ACM) to the MSC at calling terminal place;
Step 708: the MSC at calling terminal place returns the alerting signaling to calling terminal, the expression terminal called free time;
Step 709: the MSC at calling terminal place initiates IAM to the video frequency color ring platform;
Step 710: the video frequency color ring platform identifies to the MSC at calling terminal place echo reply message (ANM) according to the user video CRBT CAMEL-Subscription-Information of database storage;
Step 711: set up H.245 channel between calling terminal and the video frequency color ring platform;
Step 712: the user of calling terminal watches video frequency color ring;
Step 713: the MSC of terminal called by the place replys to the MSC at the calling terminal place link that makes a call;
Step 714: the critical point switching center at calling terminal place initiates link to the video frequency color ring platform and discharges request (release);
Step 715: remove H.245 channel between calling terminal and the video frequency color ring platform, the video frequency color ring platform returns to the MSC at calling terminal place and removes success message (RELEASE COMPLATE);
Step 716: set up H.245 channel between calling terminal and the terminal called, realize setting up 3G circuit domain video telephone communication process between calling terminal and the terminal called.
Should be noted that at last: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit; Although with reference to preferred embodiment the present invention is had been described in detail, those of ordinary skill in the field are to be understood that: still can make amendment or the part technical characterictic is equal to replacement the specific embodiment of the present invention; And not breaking away from the spirit of technical solution of the present invention, it all should be encompassed in the middle of the technical scheme scope that the present invention asks for protection.