CN101459970B - Method, system and apparatus for media type changing - Google Patents
Method, system and apparatus for media type changing Download PDFInfo
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- CN101459970B CN101459970B CN200710199578.4A CN200710199578A CN101459970B CN 101459970 B CN101459970 B CN 101459970B CN 200710199578 A CN200710199578 A CN 200710199578A CN 101459970 B CN101459970 B CN 101459970B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/10—Architectures or entities
- H04L65/1016—IP multimedia subsystem [IMS]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/10—Architectures or entities
- H04L65/102—Gateways
- H04L65/1033—Signalling gateways
- H04L65/104—Signalling gateways in the network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/1066—Session management
- H04L65/1069—Session establishment or de-establishment
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/1066—Session management
- H04L65/1083—In-session procedures
- H04L65/1095—Inter-network session transfer or sharing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/24—Negotiation of communication capabilities
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Abstract
The embodiment of the invention discloses a method for changing media types, which is used to change the media types in the process that a circuit switching CS network and an internet protocol multimedia subsystem IMS network build intercommunication calls. The method comprises: sending a call building request to a called party, receiving feedback information of the called party, carrying accepted media types of the called party in the feedback information, generating notification massage according to contents of the feedback information, sending the notification massage to a calling party, and building call connection corresponding to the notification massage. The method informs the calling party of the accepted media types of the called party to build the call connection, thereby realizing changes of the media types in the process that the CS network and the IMS network build the intercommunication calls, and fetching up the defect that the prior art does not support the changes of the media types in the process of building calls.
Description
Technical field
The present invention relates to communication technical field, particularly a kind of mthods, systems and devices of media type changing.
Background technology
At present, mobile communications network is main with CS network (Circuit Switched, circuit switching), comprises GSM (the Global System for Mobile communication, Global Link), CDMA (Code Division Multiple Access, code division multiple access) etc.Each operator has set up fairly perfect and abundant business platform based on the CS network, wherein, be responsible for to call out route and service logic is carried out by MSC (Mobile Switching Center, mobile switching centre), as forward-shifting service etc.But the business of CS network provides the support that needs roaming place MSC, and is therefore unfavorable for the introducing of new business.
IMS (IP Multimedia Subsystem, IP Multimedia System) is the effective scheme of the many network integrations in the present communications field.In the evolution process of IMS network, need to guarantee that the user is in different access waies, for example: CS network insertion or PS (Packet Switched, packet switching) business experience under the network insertion can reach consistent, make the user need not the concrete access way of perception, as receive/send the configuration of calling, supplementary service data and call etc.Therefore, 3GPP (The 3rd GenerationPartnership Project, third generation partner program) ICS (IMS CentralizedService has been proposed, the control of IMS centralized traffic), require to realize that UE is by CS network carrying voice or VP (Visual Phone, video telephone) medium are set up the IMS calling, by the AS among the IMS (ApplicationServer, application server) call business are provided support.The importance that ICS uses is that traditional C UE inserts the IMS network, as shown in Figure 1, insert the schematic diagram of IMS network for prior art CS UE, MSC Server among Fig. 1 is the enhancing to existing CS network MSC server, MSC server after the enhancing can translate into the signaling in CS territory SIP (Session Initial Protocol, session initiation protocol) signaling, and the SIP signaling sent in the IMS network, thereby reach the purpose that makes CS UE enjoy the IMS business.MGW (Media Gate-Way, media gateway) under the control of MSC Server, carry out the conversion between CS access bearer and RTP (Real-time Streaming Protocol, RTP) carrying, MSC server may control one or more MGW.
As shown in Figure 2, the flow chart for prior art CS UE initiatively initiates audio call specifically may further comprise the steps:
Step S201, CS user initiates voice call request by Setup message to MSC Server.
Step S202, MSC Server carries out protocol conversion, the setup message conversion in CS territory is become SIP Invite message, and this SIP Invite message is sent to UE-B by S-CSCF.
Step S203, UE-B return SIP Temporary Response message, for example: 183 or 182 Temporary Response message.
Step S204, MSC Server sends call treatment message to UE-A, is used to notify the UE-A medium type that this UE-B accepts.
Illustrate: step S203 and step S204 do not have precedence relationship, can carry out simultaneously.
Step S205, MSC Server receives 183 Temporary Response message by SIP PRACK message authentication.
Step S206, UE-B is by 200 OK message authentication PRACK message.
Step S207, UE-B return off-hook and reply 200 OK message.
Step S208, MSC Server carries out protocol conversion, and 200 OK message conversion are become connect message.
But, existing MSC Server can only support the signaling conversion between 3GPP TS 24.008 and Session Initiation Protocol, be that MSC Server can only support voice call out, can not support video call, can not be supported in simultaneously in the process of call setup and change medium type, for example: medium type is changed to audio call by video call.
The inventor is in realizing process of the present invention, find that there is following deficiency in prior art: MSC Server is not supported in the process of call setup and changes medium type, thereby make CS UE in the time can not successfully setting up video call, can not set up audio call, cause call interruption.
Summary of the invention
The embodiment of the invention provides a kind of mthods, systems and devices of media type changing, to change medium type in the call establishment that is implemented in CS network and IMS network interworking.
For achieving the above object, the embodiment of the invention provides a kind of method of media type changing on the one hand, be used for changing medium type, comprise: send setup requests to the callee at the call establishment of circuit switching (CS) network and internet protocol multimedia subsystem IMS network interworking; Receive described callee's feedback message, described feedback message carries the medium type that described callee accepts, content according to described feedback message generates notification message, and described notification message is sent to the calling party, connects to set up the calling corresponding with described notification message; When described callee is the CS terminal, when described setup requests was the video call request, described feedback message was a release message, and described feedback message carries described CS terminal and do not accept described video call information requested; Described content according to feedback message generates notification message and specifically comprises: generating the medium type that carries described CS terminal acceptance according to described release message is the SIP Temporary Response message of the information of audio call; The described foundation calling corresponding with notification message connects and comprises: initiate voice call request to described CS terminal, connect to set up to call out.
On the other hand, the embodiment of the invention also provides a kind of system of media type changing, is used for changing medium type at the call establishment of CS network and IMS network interworking, and comprising: the calling party is used to send setup requests; The callee is used for receipt of call and sets up request, and sends feedback message, and described feedback message carries the medium type that described callee accepts; CS inserts the IMS network equipment, be used for the setup requests that described calling party sends is sent to described callee, receive the feedback message that described callee sends, content according to described feedback message generates notification message, and described notification message sent to described calling party, to set up the calling connection corresponding with described notification message; Described callee comprises: the feedback sending module is used for inserting the IMS network equipment to described CS and sends feedback message; Described feedback sending module comprises: discharge the feedback submodule, be used for working as the callee and be the CS terminal, when setup requests is the video call request, feed back described CS terminal by release message not accept described video call information requested; Described CS inserts the IMS network equipment and comprises: request sending module is used for the setup requests that described calling party sends is sent to described callee; The message sink module is used to receive the feedback message that described callee sends; Message generating module is used for the content generation notification message according to the feedback message of described message sink module reception; Message transmission module is used for the notification message that described message generating module generates is sent to described calling party, connects to set up the calling corresponding with described notification message; The request initiation module is used for initiating voice call request to described CS terminal after described message sink module receives the release message of callee's feedback; Described message generating module comprises: response generates submodule, and being used to generate the medium type that carries described callee's acceptance is the SIP Temporary Response message of the information of audio call.
Again on the one hand, the embodiment of the invention also provides a kind of CS to insert the IMS network equipment, comprising: request sending module is used for the setup requests that the calling party sends is sent to the callee; The message sink module is used to receive the feedback message that described callee sends; Message generating module is used for the content generation notification message according to the feedback message of described message sink module reception; Message transmission module is used for the notification message that described message generating module generates is sent to described calling party, connects to set up the calling corresponding with described notification message; The request initiation module is used for initiating voice call request to described callee after described message sink module receives the release message of callee's feedback; Described message generating module comprises: response generates submodule, and being used to generate the medium type that carries described callee's acceptance is the SIP Temporary Response message of the information of audio call.
Compared with prior art, the embodiment of the invention has the following advantages: the embodiment of the invention receives the feedback message that the callee sends, the medium type of accepting according to callee in this feedback message generates notification message, the medium type that the callee accepts is informed the calling party, connect to set up to call out, thereby realized in the call establishment of CS network and IMS network interworking, changing medium type.
Description of drawings
Fig. 1 is that prior art CS UE inserts the IMS network diagram;
Fig. 2 initiatively initiates the flow chart of audio call for prior art CS UE;
Fig. 3 is the flow chart of the method for embodiment of the invention media type changing;
Fig. 4 is the flow chart of the embodiment of the invention one;
Fig. 5 is the flow chart of the embodiment of the invention two;
Fig. 6 is the flow chart of the embodiment of the invention three;
Fig. 7 is the structure chart of the system of embodiment of the invention media type changing;
Fig. 8 inserts the structure chart of IMS network equipment for embodiment of the invention CS.
Embodiment
The embodiment of the invention provides a kind of method of media type changing, the medium type of accepting according to the callee generates notification message, and this notification message sent to the calling party, with the medium type caller notification that the callee is accepted, thereby realized in the call establishment of CS network and IMS network interworking, changing medium type.The method that the embodiment of the invention provides is not only applicable in the call establishment of CS network and IMS network interworking medium type be changed to audio call by video call, also be applicable to medium type is changed to video call by audio call, but the embodiment of the invention is that example describes in the call establishment of CS network and IMS network interworking medium type is changed to audio call by video call.In embodiments of the present invention, CS insert the IMS network equipment be used for calling with the CS network be linked into the IMS network or, the calling of IMS network is linked into the CS network, can be for MSC Server etc., the embodiment of the invention is that example describes with MSC Server.
As shown in Figure 3, the flow chart for the method for embodiment of the invention media type changing specifically may further comprise the steps:
Step S301 sends setup requests to the callee.This setup requests can be the video call request, also can be voice call request, but the embodiment of the invention is that the video call request is that example describes with this setup requests.After the setup requests that receives calling party's transmission, CS inserts the IMS network equipment this setup requests is sent to the callee.
Step S302 receives callee's feedback message, and this feedback message carries the medium type that the callee accepts, and generates notification message according to the content of feedback message, and this notification message is sent to the calling party, connects to set up to call out.After the setup requests that receives the transmission of CS access IMS network equipment, the callee inserts the IMS network equipment to CS and sends feedback message, return the medium type that the callee accepts, CS inserts the content generation notification message of IMS network equipment according to this feedback message then, the medium type that the callee accepts is informed the calling party, connect to set up to call out.
The method of above-mentioned media type changing, receive the feedback message that the callee sends, content according to this feedback message generates notification message, the medium type that the callee accepts is informed the calling party, connect to set up to call out, thereby realized in the call establishment of CS network and IMS network interworking, changing medium type.
As shown in Figure 4, flow chart for the embodiment of the invention one, in embodiment one, the calling party is the CS terminal, and this CS terminal and MSC Server all support SCUDIF (during Service Change andUDI/RDI Fallback (business change and UDI/RDI rollback) characteristic, wherein RDI (RestrictedDigital Information) is restricted digital information, and the CS terminal is initiated the flow process of setting up of video call.SCUDIF is a kind of traffic performance of CS network, make the CS terminal can calling carry out or call establishment in, medium type is changed between audio call and video call, and can interrupt call.
Specifically may further comprise the steps:
Step S401, CS terminal UE-A initiates the video call request by Setup message to MSC Server, comprise RI (Repeat Indicator in this Setup message request, repeat indication) parameter, and BC-IE (the Bearer Capability-Information Element that supports, the bearer capability information element), the BC-IE of support call is respectively the bearer capability information element of video call and the bearer capability information element of audio call in the present embodiment, and wherein video call is the preferential medium type of selecting.
Because UE-A supports the SCUDIF characteristic, so comprises the RI parameter in this Setup message, this parameter is used to notify MSC Server UE-A to support the SCUDIF characteristic; If UE-A does not support the SCUDIF characteristic, then Setup message does not comprise the RI parameter.
Step S402, MSC Server generate SIP Invite message according to the Setup message of receiving, this SIPInvite message is used for initiating a video call to the callee invites, and this SIP Invite message sends to UE-B through S-CSCF.
Step S403, UE-B is by SIP Temporary Response message, for example: 183 message, or 182 message, or 180 message return the medium type of its acceptance, and this message finally arrives MSC Server, in the present embodiment, the callee refuses video request, only accepts voice call request.
Step S404, MSC Server know that according to the content of SIP Temporary Response message among the step S403 callee only accepts audio call; And generating call treatment (CallProceeding) message according to the content of this SIP Temporary Response message, MSC Server is an audio call by the medium type that call treatment message informing UE-A callee accepts.
Step S405, MSC Server receives SIP Temporary Response message by SIP PRACK message authentication.
Step S406, UE-B receives SIP PRACK message by the 200OK message authentication.
Step S407, UE-B return off-hook and reply 200 OK message.
Step S408, MSC Server carries out protocol conversion, and 200 OK message conversion are become Connect (connection) message, sends to UE-A, connects to set up to call out.
The method of above-mentioned media type changing, MSC Server is according to the medium type of content aware callee's acceptance of the SIP Temporary Response message of receiving, and generate call treatment message according to the content of this SIP Temporary Response message, the medium type that the callee accepts is informed the calling party, thereby realized in call establishment, type of call being changed to audio call by video call.
As shown in Figure 5, be the flow chart of the embodiment of the invention two, in embodiment two, the callee is the CS terminal, and this CS terminal and MSC Server all support the SCUDIF characteristic, and the calling party initiates the flow process of setting up of video call.
Specifically may further comprise the steps:
Step S501, calling party UE-B initiates the video call request by SIP Invite message to CS terminal UE-A.
Step S502, MSC Server carries out protocol conversion, SIP Invite message conversion is become the Setup message of circuit domain, comprise the RI parameter in the Setup message, and the BC-IE that supports, the BC-IE of support call is respectively the bearer capability information element of video call and the bearer capability information element of audio call in the present embodiment, and wherein visual telephone is the preferential type of call of selecting.
Because MSC Server supports the SCUDIF characteristic, so comprises the RI parameter in this Setup message, this parameter is used to notify its support of UE-A SCUDIF characteristic; If MSC Server does not support the SCUDIF characteristic, then this Setup message does not comprise the RI parameter.
Step S503, UE-A is by calling out acknowledge message (Call Confirmed) echo reply message.The medium type that carries UE-A acceptance in this calling acknowledge message is the information of audio call.
Step S504, MSC Server be according to the content of the calling acknowledge message among the step S503, knows that this end subscriber only accepts audio call; MSC Server generates SIP Temporary Response message according to the content of calling out acknowledge message, and for example: 183 message, or 182 message, or 180 message, the medium type of accepting with caller notification UE-B callee UE-A is an audio call.
Step S505, UE-B receives SIP Temporary Response message by SIP PRACK message authentication.
Step S506, MSC Server receives SIP PRACK message by 200 OK message authentications.
Step S507, UE-A return the Connect connection message.
Step S508, MSC Server carries out protocol conversion, and the Connect message conversion is become 200 OK message, sends to UE-B by S-CSCF, connects to set up to call out.
The method of above-mentioned media type changing, MSC Server is according to the content of the calling acknowledge message of receiving, know the medium type that the callee accepts, and generate SIP Temporary Response message according to this content of calling out acknowledge message, the medium type that the callee accepts is informed the calling party, thereby realized in call establishment, type of call being changed to audio call by video call.
As shown in Figure 6, be the flow chart of the embodiment of the invention three, in embodiment three, the callee is the CS terminal, and this CS terminal or MSC Server do not support the SCUDIF characteristic, and the calling party initiates the flow process of setting up of video call.
Specifically may further comprise the steps:
Step S601, calling party UE-B initiates the video call request by SIP Invite message to CS terminal UE-A.
Step S602, MSC Server carries out protocol conversion, and SIP Invite message conversion is become the Setup message of circuit domain, and the medium type in the Setup message is a video call.
Because MSC Server does not support the SCUDIF characteristic, so does not comprise the RI parameter in this Setup message.
Step S603, UE-A refuses this video call request by release complete (release) message.This release message explanation UE-A does not accept the video call request.
Step S604, MSC Server judge that according to the content of release message among the step S603 UE-A does not accept video call, initiate voice call request once more to UE-A.
Step S605, MSC Server sends SIP Temporary Response message to calling party UE-B, and for example: 183 message, or 182 message, or 180 message, the medium type that caller notification UE-B callee UE-A accepts is an audio call.
Wherein, step S604 and step S605 can carry out simultaneously, also can not carry out simultaneously.
Step S606, UE-B receives SIP Temporary Response message by SIP PRACK message authentication.
Step S607, MSC Server receives SIP RACK message by 200 OK message authentications.
Step S608, UE-A return the Connect connection message.
Step S609, MSC Server carries out protocol conversion, and the Connect message conversion is become 200 OK message, sends to UE-B by S-CSCF, connects to set up to call out.
The method of above-mentioned media type changing, the release message that MSC Server sends according to the callee, know that the callee refuses video call, MSC Server initiates voice call request to the callee once more, simultaneously send SIP Temporary Response message to the calling party, with the medium type of notifying the callee to accept to the calling party is audio call, thereby has realized in call establishment type of call being changed to audio call by video call.
As shown in Figure 7, be the structure chart of the system of embodiment of the invention media type changing, comprising: the calling party 71, are used to send setup requests; The callee 72, are used for receipt of call and set up request, and send feedback message, and this feedback message carries the medium type that callee 72 accepts; CS inserts IMS network equipment 73, the setup requests that is used for calling party 71 is sent sends to callee 72, receive the feedback message that callee 72 sends, content according to this feedback message generates notification message, and notification message sent to calling party 71, to set up the calling connection corresponding with this notification message.
Wherein, callee 72 comprises: feedback sending module 721 is used for inserting IMS network equipment 73 to CS and sends feedback message.
Wherein, CS inserts IMS network equipment 73 and comprises: request sending module 731, and the setup requests that is used for calling party 71 is sent sends to callee 72;
In the system of the media type changing of another embodiment of the present invention, feedback sending module 721 further comprises: Temporary Response feedback submodule 7211, be used for when calling party 71 is the CS terminal, by the medium type of SIP Temporary Response message feedback callee 72 acceptance.
In the system of the media type changing of another embodiment of the present invention, feedback sending module 721 further comprises: call out and confirm feedback submodule 7212, be used for when callee 72 is the CS terminal, by calling out the medium type that confirmation feedback callee 72 accepts.
In the system of the media type changing of another embodiment of the present invention, feedback sending module 721 further comprises: discharge feedback submodule 7213, be used for being the CS terminal as callee 72, when setup requests is the video call request, do not accept this video call information requested by release message feedback CS terminal.
CS inserts IMS network equipment 73 and further comprises: request initiation module 735, be used for after message sink module 732 receives the release message of callee's 72 feedbacks, and initiate voice call request to callee 72.
The system of above-mentioned media type changing, CS inserts the content generation notification message of IMS network equipment 73 according to the feedback message of callee's 72 transmissions, with the medium type caller notification 71 of callee's 72 acceptance, thereby realized in the call establishment of CS network and IMS network interworking, changing medium type.
As shown in Figure 8, the structure chart for embodiment of the invention CS inserts the IMS network equipment comprises: request sending module 81 is used for the setup requests that the calling party sends is sent to the callee; Message sink module 82 is used to receive the feedback message that the callee sends;
CS in another embodiment of the present invention inserts in the IMS network equipment, and message generating module 83 further comprises: call treatment generates submodule 831, and the medium type that is used for accepting according to the callee generates call treatment message.
CS in another embodiment of the present invention inserts in the IMS network equipment, and message generating module 83 further comprises: Temporary Response generates submodule 832, and the medium type that is used for accepting according to the callee generates SIP Temporary Response message.
CS in another embodiment of the present invention inserts in the IMS network equipment, and message generating module 83 further comprises: response generates submodule 833, and being used to generate the medium type that carries callee's acceptance is the SIP Temporary Response message of the information of audio call;
This CS inserts the IMS network equipment and further comprises: request initiation module 85 is used for initiating voice call request to the callee after message sink module 82 receives the release message of callee's feedback.
Above-mentioned CS inserts the IMS network equipment, message sink module 82 receives the feedback message that the callee sends, message generating module 83 generates notification message according to the content of this feedback message, with the medium type caller notification of callee's acceptance, thereby realized in the call establishment of CS network and IMS network interworking, changing medium type.
Through the above description of the embodiments, those skilled in the art can be well understood to the present invention and can realize by the mode that software adds essential general hardware platform, can certainly pass through hardware, but the former is better execution mode under a lot of situation.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words can embody with the form of software product, this computer software product is stored in the storage medium, comprise that some instructions are with so that a computer equipment (can be a personal computer, server, the perhaps network equipment etc.) carry out the described method of each embodiment of the present invention.
More than disclosed only be several specific embodiment of the present invention, still, the present invention is not limited thereto, any those skilled in the art can think variation all should fall into protection scope of the present invention.
Claims (15)
1. the method for a media type changing is used for changing medium type at the call establishment of circuit switching (CS) network and internet protocol multimedia subsystem IMS network interworking, it is characterized in that, comprising:
Send setup requests to the callee;
Receive described callee's feedback message, described feedback message carries the medium type that described callee accepts, content according to described feedback message generates notification message, and described notification message is sent to the calling party, connects to set up the calling corresponding with described notification message;
When described callee is the CS terminal, when described setup requests was the video call request, described feedback message was a release message, and described feedback message carries described CS terminal and do not accept described video call information requested; Described content according to feedback message generates notification message and specifically comprises: generating the medium type that carries described CS terminal acceptance according to described release message is the SIP Temporary Response message of the information of audio call; The described foundation calling corresponding with notification message connects and comprises: initiate voice call request to described CS terminal, connect to set up to call out.
2. the method for media type changing according to claim 1 is characterized in that, described notification message carries the medium type that described callee accepts.
3. the method for media type changing according to claim 1 is characterized in that when described calling party was the CS terminal, described feedback message was a Session initiation protocol SIP Temporary Response message.
4. as the method for media type changing as described in the claim 3, it is characterized in that described content according to feedback message generates notification message and specifically comprises: the medium type of accepting according to callee in the described SIP Temporary Response message generates call treatment message.
5. the method for media type changing according to claim 1 is characterized in that, when described callee was the CS terminal, described feedback message was for calling out confirmation.
6. as the method for media type changing as described in the claim 5, it is characterized in that described content according to feedback message generates notification message and specifically comprises: the medium type of accepting according to callee in the described calling confirmation generates SIP Temporary Response message.
7. as the method for media type changing as described in the claim 1,3 or 6, it is characterized in that described SIP Temporary Response message comprises 183 message, or 182 message, or 180 message.
8. the system of a media type changing is used for changing medium type at the call establishment of CS network and IMS network interworking, it is characterized in that, comprising:
The calling party is used to send setup requests;
The callee is used for receipt of call and sets up request, and sends feedback message, and described feedback message carries the medium type that described callee accepts;
CS inserts the IMS network equipment, be used for the setup requests that described calling party sends is sent to described callee, receive the feedback message that described callee sends, content according to described feedback message generates notification message, and described notification message sent to described calling party, to set up the calling connection corresponding with described notification message;
Described callee comprises: the feedback sending module is used for inserting the IMS network equipment to described CS and sends feedback message;
Described feedback sending module comprises: discharge the feedback submodule, be used for working as the callee and be the CS terminal, when setup requests is the video call request, feed back described CS terminal by release message not accept described video call information requested;
Described CS inserts the IMS network equipment and comprises:
Request sending module is used for the setup requests that described calling party sends is sent to described callee;
The message sink module is used to receive the feedback message that described callee sends;
Message generating module is used for the content generation notification message according to the feedback message of described message sink module reception;
Message transmission module is used for the notification message that described message generating module generates is sent to described calling party, connects to set up the calling corresponding with described notification message;
The request initiation module is used for initiating voice call request to described CS terminal after described message sink module receives the release message of callee's feedback;
Described message generating module comprises: response generates submodule, and being used to generate the medium type that carries described callee's acceptance is the SIP Temporary Response message of the information of audio call.
9. as the system of media type changing as described in the claim 8, it is characterized in that, described feedback sending module also comprises: Temporary Response feedback submodule is used for when the calling party is the CS terminal, by the medium type of the described callee's acceptance of SIP Temporary Response message feedback.
10. as the system of media type changing as described in the claim 9, it is characterized in that described message generating module also comprises: call treatment generates submodule, and the medium type that is used for accepting according to described callee generates call treatment message.
11. system as media type changing as described in the claim 8, it is characterized in that, described feedback sending module also comprises: call out and confirm the feedback submodule, be used for when the callee is the CS terminal, feed back the medium type that described callee accepts by calling out confirmation.
12. the system as media type changing as described in the claim 11 is characterized in that described message generating module also comprises: Temporary Response generates submodule, and the medium type that is used for accepting according to described callee generates SIP Temporary Response message.
13. a CS inserts the IMS network equipment, it is characterized in that, comprising:
Request sending module is used for the setup requests that the calling party sends is sent to the callee;
The message sink module is used to receive the feedback message that described callee sends;
Message generating module is used for the content generation notification message according to the feedback message of described message sink module reception;
Message transmission module is used for the notification message that described message generating module generates is sent to described calling party, connects to set up the calling corresponding with described notification message;
The request initiation module is used for initiating voice call request to described callee after described message sink module receives the release message of callee's feedback;
Described message generating module comprises: response generates submodule, and being used to generate the medium type that carries described callee's acceptance is the SIP Temporary Response message of the information of audio call.
14. insert the IMS network equipment as CS as described in the claim 13, it is characterized in that described message generating module also comprises: call treatment generates submodule, and the medium type that is used for accepting according to described callee generates call treatment message.
15. insert the IMS network equipment as CS as described in the claim 13, it is characterized in that described message generating module also comprises: Temporary Response generates submodule, and the medium type that is used for accepting according to described callee generates SIP Temporary Response message.
Priority Applications (2)
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| CN200710199578.4A CN101459970B (en) | 2007-12-14 | 2007-12-14 | Method, system and apparatus for media type changing |
| PCT/CN2008/073443 WO2009089711A1 (en) | 2007-12-14 | 2008-12-10 | Method, system and device for alternating media type |
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| CN200710199578.4A CN101459970B (en) | 2007-12-14 | 2007-12-14 | Method, system and apparatus for media type changing |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101997697B (en) | 2009-08-12 | 2012-06-20 | 华为终端有限公司 | Service control method and device for interface I1 |
| CN101646055B (en) * | 2009-09-03 | 2013-10-16 | 中兴通讯股份有限公司 | Video media server for realizing video interworking gateway function and video interworking method |
| CN102714828A (en) * | 2010-12-31 | 2012-10-03 | 华为技术有限公司 | Service transfer method, device and system |
| CN103139743A (en) * | 2011-11-30 | 2013-06-05 | 中兴通讯股份有限公司 | Method, system, network side and terminal for non-voice emergent service media selection |
| CN107371140B (en) * | 2016-05-11 | 2021-01-12 | 中国移动通信有限公司研究院 | Method and device for processing call forwarding |
| CN110971420B (en) * | 2018-09-28 | 2021-08-20 | 展讯通信（上海）有限公司 | Method and device for updating media access type of conference call |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1756242A (en) * | 2004-09-30 | 2006-04-05 | 华为技术有限公司 | System and method for carrying service using circuit switching in IP multimedia subsystem |
| CN1893427A (en) * | 2005-07-07 | 2007-01-10 | 华为技术有限公司 | Method for conducting business support ability consultation |
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| CN100484141C (en) * | 2005-03-28 | 2009-04-29 | 华为技术有限公司 | Method for realizing terminal ability interaction and route control in IMS and CS service concurrence |
| KR100909542B1 (en) * | 2005-08-01 | 2009-07-27 | 삼성전자주식회사 | Method and apparatus for interworking voice and multimedia service between a CSI terminal and an IMS terminal |
| MY154891A (en) * | 2006-01-31 | 2015-08-14 | Interdigital Tech Corp | Method and apparatus for supporting circuit switched interworking |
| US7706779B2 (en) * | 2006-03-16 | 2010-04-27 | Research In Motion Limited | System and method for controlling VCC functionality in a network environment including IMS |
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| CN1756242A (en) * | 2004-09-30 | 2006-04-05 | 华为技术有限公司 | System and method for carrying service using circuit switching in IP multimedia subsystem |
| CN1893427A (en) * | 2005-07-07 | 2007-01-10 | 华为技术有限公司 | Method for conducting business support ability consultation |
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| WO2009089711A1 (en) | 2009-07-23 |
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