WO2011057531A1

WO2011057531A1 - Implementation method and device for resuming play of color images after answer

Info

Publication number: WO2011057531A1
Application number: PCT/CN2010/078011
Authority: WO
Inventors: 谢振华; 郝振武
Original assignee: 中兴通讯股份有限公司
Priority date: 2009-11-10
Filing date: 2010-10-22
Publication date: 2011-05-19
Also published as: CN102055739A

Abstract

The present invention discloses an implementation method and device for resuming play of color images after an answer, wherein the method includes: in the process of session establishment, after receiving a Session Initiation Protocol (SIP) request message, a color image Application Server (AS) forwards the SIP request message and the forwarded SIP request message carries a Session Description Protocol (SDP) request which includes the media resource information of a media server; and after receiving the answer message of the session, the color image AS indicates the media server to play the color image media data to the callee. The present invention can effectively shorten the establishment time of a normal call and improve the user experience.

Description

Method and device for implementing continuous playback of color image after response

TECHNICAL FIELD The present invention relates to the field of communications, and in particular, to an implementation method and apparatus for continuing to play a color image after a response.

Background technique

Internet Protocol (IP) Multimedia Subsystem (IMS) is an IP-based network architecture proposed by the 3rd Generation Partnership Project (3GPP). IMS builds an open and flexible business environment that supports multimedia applications and provides users with rich multimedia services. In the IMS service system, the control layer and the service layer are separated. The control layer does not provide specific services, and only provides necessary triggering, routing, and accounting functions to the service layer. The service triggering and control functions in the control layer are implemented by the Call Session Control Function (CSCF). The CSCF is divided into a proxy CSCF (Proxy-Proxy, referred to as P-CSCF) and a query CSCF (Interrogatmg-CSCF, referred to as I). -CSCF) and the service CSCF (Servmg-CSCF, S-CSCF for short) are three types, of which the main responsibility is Serving-CSCF, and the Interrogating-CSCF type is optional. The business layer is composed of a series of Application Servers (ASs) that can provide specific business services. The S-CSCF in the control layer controls the service trigger according to the subscription information of the user, invokes the service on the AS, and implements the service function. AS and S-CSCF can be collectively referred to as Server Equipment (SE). The end-to-end device in the session is called User Equipment (UE) and is responsible for interaction with the user. These functional entities use the Session Initiation Protocol (SIP) communication. In the service that needs to play multimedia information, the participation of the multimedia resource function (MRF), which is also called the media server, is divided into the control part MRF (M FC ) and the media processing part MRF ( MRFP ). The control part MRF is responsible for translating and interpreting the SIP signaling of the SE as an instruction to the MRFP, or vice versa, interpreting and interpreting the response of the MRFP as SIP signaling sent to the SE, and the processing part MRF is responsible for transmitting the media stream and receive. The ultimate goal of the session is to implement the media connection. Therefore, the media resource information needs to be negotiated in the session. The protocol used to negotiate the media resource information in the IMS system is the Session Description Protocol (SDP). The protocol interaction method is the request. In response mode, an SDP request must have an SDP response. The content of the SDP request and response is media resource information, and the media resource information includes media owner information (including address information), media connection address, media type, and media port and codec information related to the media type. In the content of the SDP response, the number, type, and order of media must be exactly the same as the number, type, and order of media in the SDP request. The content of the SDP protocol is carried by the message body of the SIP message. The interaction process is independent of the SIP request response mode. That is, the SIP request or response message can carry the SDP request, and can also carry the SDP response or not. . There are two types of media connections, one is a normal media connection and the other is an early media connection. A normal media connection is a media connection in which a user can transmit media data after responding to a SIP call request. The early media connection is a media connection that can transmit media data before the user has answered the SIP call request. The content of the SDP request and response for negotiating the normal media connection is called the normal media SDP, and the content of the SDP request and response for negotiating the early media connection is called the early media SDP. The color image service is a service that plays network multimedia data to the called user. It plays before the response, and can continue to play after the response. The media played before the response belongs to the early media.

Figure 1 shows the flow chart of continuing to play the color image after the existing response. For the description, the color image AS and CSCF are drawn as an entity, and the interaction between them is a standard process. Figure 1 depicts the process in which the calling party is called, the ring back tone server plays the ring back tone to the calling party during the call, and continues to play to the called party after the response. The description is as follows: Step 101 102: UE-A initiates to UE-B The call request, the SDP request 1 required to carry the call service, such as an INVITE message, carries the SDP request 1 in the message body, and the message arrives at the UE-B through the CSCF and the color image AS; 103-104. The called UE-B receives the call message and sends a response message to the calling party, for example, sends a "183 Session Progress" message, and carries the SDP of the UE-B's call service in the message body in the session type. Response 2, the response message arrives via CSCF and color image AS UE-A; Step 105: The UE-A receives the response message, completes the negotiation of the call media according to the SDP response 2 of the UE-B, and sends a pre-confirmation request message, for example, sends a pre-acknowledgement (PRACK) message, and the message passes through the CSCF. Reaching the color image AS; Step 106, the color image AS receives the pre-confirmation request message, and adds the early media SDP request 3 of the color image, for example, the early media carrying the early morning video resource information in the early-session type The SDP requests 3, and then forwards it to the called UE-B, and the message finally arrives at the UE-B via the CSCF. Step 107: The UE-B receives the pre-acknowledgment and sends a response message, for example, sends a "200 OK" message, carrying the UE- The early media SDP response B of B, for example, carries the early media SDP response 4 of the UE-B in the early-session type, and the message passes through the CSCF to reach the color image AS; Step 108, the color image AS receives the response message, according to the UE-B The early media SDP response 4 completes the negotiation of the color image early media, and after deleting the early media SDP response 4, forwards the response message to the UE-A, and the message arrives at the UE-A via the CSCF; Step 101 108 plays the existing response. The standard technology of color image, at this point, the early color image After the physical resource negotiation is completed, the color image AS can control the media server to play the color image media information to the UE-B. Step 109: The UE-B answers the call, sends a response message, for example, sends a "200 OK" message, and the message passes through the CSCF to reach the color image. AS; Step 110, the color image AS stops playing the early image information of the color image, and then sends an update request to the UE-B, for example, sending a re-invitation (relNVITE) message, and the message body carries the SDP request 5 of the media resource information of the media server, for example, The session type carries the SDP request 5 of the media resource information of the media server, and the message arrives at the UE-B via the CSCF. Step 111: The UE-B receives the update message and agrees to update, and then sends an agreement update message, such as a "200 OK" message, carrying The SDP response 6 of the UE-B, for example, carries the SDP response 6 of the UE-B in the session type, and the message passes through the CSCF to reach the color image AS; Step 112, the color image AS sends an update request to the UE-A, such as sending an update (UPDATE) message. The SDP request 7 for the message body carrying the media resource information of the media server, for example, the SDP request 7 carrying the media resource information of the media server in the session type, the message path CSCF arrives UE-A; Step 113: The UE-A receives the update message and agrees to the update, and then sends an Agree Update message, such as a "200 OK" message, carrying the SDP response 8 of the UE-A, such as the SDP carrying the UE-A in the session type. In response to the message 8, the message passes through the CSCF to reach the color image AS; Step 114, the color image AS forwards the response message to the UE-A, and the message arrives at the UE-A via the CSCF. So far, UE-A and UE-B establish a media connection through the media server to start a call, and the media server continues to play the game to UE-B by mixing the color image media data into the media data sent to UE-B. Like media data. However, it can be seen from the above process that after the user answers, there are still many auxiliary processes to establish a call, and the user experience is not good.

SUMMARY OF THE INVENTION The technical problem to be solved by the present invention is to provide an implementation method and apparatus for continuing to play a color image after answering, simplifying the flow of the prior art, and shortening the establishment of the talk time. In order to solve the above technical problem, the present invention provides an implementation method for continuing to play a color image after the response, including: in the process of session establishment, after the color image application server (AS) receives the session initiation protocol (SIP) request message, forwarding The SIP request message, the forwarded SIP request message carries a session description protocol (SDP) request, the SDP request includes media resource information of the media server; and the color image AS receives the response message of the session, and indicates the media The server plays the color image media data to the called party. The SIP request message is a call request message. The SIP request message is a pre-acknowledgment request message or an update request message. The SDP request also includes media resource information of the calling party. The step of instructing the media server to play the color image media data to the called party includes: the color image AS instructing the media server to forward the media data between the calling party and the called party, and The color image media data is mixed into the media data sent by the called party.

After the step of instructing the media server to play the color image media data to the called party, the method further includes: the called party mixes the received color image media data with the normal call data.

In order to solve the above technical problem, the present invention provides an implementation method for continuing to play a color image after the response, including: in the process of session establishment, after the color image application server (AS) receives the session initiation protocol (SIP) request message, forwarding The SIP request message; the color image AS receives the response message of the SIP request message, and determines whether the response message of the SIP request message carries an indication supporting early media, and forwards the response message, when the response message carries When the indication of the early media is supported, the response message carries a session description protocol (SDP) request, the SDP request includes media resource information of the media server; and the color image AS receives the response message of the session, and indicates the media The server plays the color image media data to the called party. The SIP request message is a call request message. The SIP request message is a pre-acknowledgment request message or an update request message. The SDP request also includes media resource information of the calling party.

The step of instructing the media server to play the color image media data to the called party includes: the color image AS instructing the media server to forward the media data between the calling party and the called party, and mixing the color image media data into the called party The media data sent by the party.

After the step of instructing the media server to play the color image media data to the called party, the method further includes: the called party mixing the received color image media data with the normal call data. In order to solve the above technical problem, the present invention further provides an apparatus for implementing continuous playback of a color image after response, which is applied to a color image AS, the apparatus includes a negotiation module and a control module; and the negotiation module is configured to: receive a session of the session After the initial protocol (SIP) request message, the forwarded SIP request message carries a session description protocol (SDP) request, where the SDP request includes media resource information of the media server; or, after receiving the SIP request message of the session, forwarding the a SIP request message, and after receiving the response message of the SIP request message, when the response message carries an indication of supporting the early media, the forwarded response message carries an SDP request, where the SDP request includes the media resource information of the media server; The control module is configured to: after receiving the response message of the session, instruct the media server to play the color image media data to the called party. The SIP request message is a call request message or a pre-acknowledgment request message or an update request message.

The invention can effectively shorten the establishment time of the normal call and improve the user experience.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a flow chart of continuing to play a color image after an existing response;

2 is a flowchart of continuing to play a color image after the response according to the first embodiment of the present invention; FIG. 3 is a flowchart of continuing to play the color image after the response according to the second embodiment of the present invention; FIG. FIG. 5 is a flowchart of continuing to play a color image after responding according to Embodiment 4 of the present invention; FIG. 6 is a schematic diagram of an apparatus for implementing continuous playback of a color image after answering according to an embodiment of the present invention.

Preferred embodiment of the invention

The basic idea of the present invention is: in the process of session establishment, before receiving the response message of the called party, the color image AS and the called party perform media resource negotiation of the media server; after receiving the response message of the called party, the indication The media server plays the color image media data to the called party. Specifically, the present invention includes: in the process of session establishment, after receiving the SIP request message sent by the calling party, the color image AS carries an SDP request in the SIP request message forwarded to the called party, where the SDP request includes the media. The media resource information of the server; after receiving the response message of the session sent by the called party, the color image AS instructs the media server to play the color image media data to the called party. The SIP request message is a call request message, or a pre-acknowledgment request message, or an update request message.

Preferably, the content requested by the SDP is media resource information of the media server, or media resource information of the media server and media resource information of the calling party. Preferably, before the forwarding of the SIP request message, the color image AS determines whether to carry the indication of supporting the early media according to the response message of the call request message returned by the called party, and determines whether to carry in the SIP request message. The SDP request; when carrying the indication of supporting the early media, the SIP request message carries the SDP request, and does not carry the SDP request when the indication for supporting the early media is not carried. After receiving the response message of the session, the color image AS instructs the media server to forward the media data between the calling party and the called party, and mixes the color image media data into the media data sent to the called party. Or, the media server is instructed to play the color image media data to the called party, and the called party mixes the received color image media data with the normal call data.

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. Embodiment 1 FIG. 2 is a flowchart of continuing to play a color image after answering according to Embodiment 1 of the present invention, describing a called party called a call, and the media server plays a color image to the called party during the call, and continues to respond after the response. The process of the called party playing the color image is as follows: Step 201: The UE-A initiates a call request to the UE-B, and carries the SDP request 1 required for the call service, for example, sends an INVITE message, and carries the SDP in the message body in the session type. Request 1, The message passes through the CSCF to reach the color image AS; Step 202, the color image AS receives the call request, decides to continue playing the color image after the response, and then deletes the SDP request 1 in the call request, and changes to the SDP carrying the media resource information of the media server. Request 2, and then forward the call request, the message arrives at the UE-B via the CSCF; Step 203, the called UE-B receives the call message, and sends a response message to the calling party, for example, sends a "183 Session Progress" message, and in the message body The session type carries the SDP response 3 required by the UE-B for the call service, and the response message passes through the CSCF to reach the color image AS; Step 204, the color image AS receives the response message, according to the SDP response of the UE-B 3 Controlling the media server to complete the media negotiation, and then deleting the SDP response 3 in the response message, and then changing to the SDP response 4 of the media resource information of the media server, and then forwarding the response message, and the message arrives at the UE-A via the CSCF; Step 205, UE -A receives the response message, and then completes the negotiation of the call media according to the SDP response 4, and sends a pre-confirmation request message, such as sending a PRACK message, and the message passes through the CSCF. Step 206: The color image AS receives the pre-confirmation request message, and adds an early media SDP request 5 of the color image early media resource information, for example, the early media that carries the color image early media resource information in the early-session type. The SDP requests 5, and then forwards it to the called UE-B, and the message finally arrives at the UE-B via the CSCF. Step 207: The UE-B receives the pre-confirmation request message, and sends a response message, such as sending a "200 OK" message, carrying The early media SDP response 6 of the UE-B, for example, carries the early media SDP response 6 of the UE-B in the early-session type, and the message passes through the CSCF to reach the color image AS; Step 208, the color image AS receives the response message, according to the UE -B's early media SDP response 6 completes the negotiation of the color image early media, and after deleting the early media SDP response 6, forwards the response message to the UE-A, and the message arrives at the UE-A via the CSCF; thus, the early media resources of the color image After the negotiation is completed, the normal media resources of the color image are also negotiated, and the color image AS can control the media server to play the color image early media information to the UE-B. Step 209, the UE-B answers the call, and sends a response message, for example, sending "200 OK". News, The message passes through the CSCF and arrives at the color image AS. Step 210: The color image AS forwards the response message to the UE-A, and the message arrives at the UE-A via the CSCF. So far, UE-A and UE-B realize the call through the forwarding of the media server, and the media server continues to play the color image media data to the UE-B by mixing the color image media data into the media data sent by the UE-B.

Embodiment 2 FIG. 3 is a flowchart of continuing to play a color image after answering according to Embodiment 2 of the present invention, describing a called party called a call, and the media server plays a color image to the called party during the call, and continues to respond after the response. The process of the called party playing the color image is as follows: Step 301: The UE-A initiates a call request to the UE-B, and carries the SDP request 1 required for the call service, for example, sends an INVITE message, and carries the SDP in the message body in the session type. Request 1, the message passes through the CSCF to reach the color image AS; Step 302, the color image AS receives the call request, decides to continue playing the color image after the response, and then deletes the SDP request 1 in the call request, and the media resource information of the media server and The media resource information of the UE-A is merged into an SDP request 2, and the SDP request 2 is carried into the call request, for example, the SDP request 2 is carried in the session type, and then the call request is forwarded, and the message arrives at the UE-B via the CSCF; Step 303; The called UE-B receives the call message and sends a response message to the calling party, such as sending a "183 Session Progress" message and se in the message body. The ssion type carries the SDP response 3 of the UE-B, and the response message passes through the CSCF to reach the color image AS. Since the SDP request 2 has both the media resource information of the UE-A and the media resource information of the media server, the UE-B is prepared. It is good to receive media data from UE-A and media server at the same time.

Step 304: The color image AS receives the response message, controls the media server to complete the media negotiation according to the SDP response 3 of the UE-B, and then deletes the media resource information related to the media server in the SDP response 3 and changes it to SDP. Response 4, then forward the response message, the message passes CSCF to Step 305: UE-A receives the response message, completes the negotiation of the call media according to the SDP response 4, and sends a pre-confirmation request message, for example, sends a PRACK message, and the message passes through the CSCF to reach the color image AS; Step 306 And the color image AS receives the pre-confirmation request message, and adds the early media SDP request 5 of the color image early media resource information, for example, the early media SDP request 5 carrying the color image early media resource information in the early-session type, and then Forwarding to the called UE-B, the message finally arrives at the UE-B via the CSCF; Step 307: The UE-B receives the pre-confirmation request message, and sends a response message, such as sending a "200 OK" message, carrying the early media SDP of the UE-B. Response 6, for example, carrying the early media SDP response 6 of UE-B in the early-session type, the message passes through the CSCF to reach the color image AS; Step 308, the color image AS receives the response message, according to the early media SDP response of the UE-B 6 Complete the negotiation of the color image early media, and after deleting the early media SDP response 6, forward the response message to the UE-A, and the message arrives at the UE-A via the CSCF; At this point, the early media resource negotiation of the color image is completed, and the color image is normal. Media resources are also negotiated The color image AS can control the media server to play the color image media information to the UE-B; Step 309, the UE-B answers the call, sends a response message, for example, sends a "200 OK" message, and the message passes through the CSCF to reach the color image AS; 310. The color image AS forwards a response message to the UE-A, and the message arrives at the UE-A via the CSCF. So far, UE-A and UE-B can directly talk, and the media server also sends the color image media data to UE-B, and UE-B mixes the media data of UE-A and the color image media data.

Embodiment 3 FIG. 4 is a flowchart of continuing to play a color image after answering according to Embodiment 3 of the present invention, describing a called party called a call, and the media server plays a color image to the called party during the call, and continues to respond after the response. The process in which the called party plays the color image is described as follows: Step 401: The UE-A initiates a call request to the UE-B, and carries the SDP request 1 required by the call service, for example, sends an INVITE message, carries the SDP request 1 in the message body in the session type, and the message passes through the CSCF to reach the color image AS; Step 402 The color image AS receives the call request, forwards the call request, and the message passes the CSCF to the UE-B. Step 403: The called UE-B receives the call message and sends a response message to the calling party, for example, sending "183 Session Progress" The message carries the SDP response required by the UE-B for the call service in the message body. The message may carry an indication supporting the early media. For example, the Support header field contains an early-session value, and the response message arrives through the CSCF. Color image AS; Step 404: The color image AS receives the response message, and decides to continue playing the color image after the response (may be determined according to whether the early media indication is carried in step 403), and then deletes the SDP response 2 in the response message, and changes to Carrying the SDP response 3 of the media resource information of the media server, and then forwarding the response message, the message arrives at the UE-A via the CSCF; Step 405, the UE-A receives the response message, and the SDP is recorded according to the SDP. The response 3 completes the negotiation of the call media, and sends a pre-confirmation request message, for example, sends a PRACK message, and the message passes through the CSCF to reach the color image AS. Step 406: The color image AS receives the pre-confirmation request message, and adds the color image early media resource information. The early media SDP request 4, for example, the SDP request 5 carrying the early media SDP request 4 in the early-session type and carrying the media resource information of the media server, for example, carrying the SDP request 5 in the session type, and then forwarding the pre-confirmation request message, the message Step 407: The UE-B receives the pre-confirmation request message, completes the media negotiation of the normal call according to the SDP request 5 therein, and negotiates the early media according to the early media SDP request 4, and then sends the response message. For example, sending a "200 OK" message carrying the early media SDP response 6 of the UE-B, for example, carrying the early media SDP response 6 of the UE-B in the early-session type, and carrying the SDP used by the UE-B for the call service. In response to the message 7, the message passes through the CSCF to reach the color image AS; Step 408, the color image AS receives the response message, and completes the color image early media negotiation according to the UE-B early media SDP response 6 According to one of the SDP and the UE-B responded 7, control the media server completes media negotiation, and delete early media SDP and SDP response after response 6 7, the UE-A Forwarding the response message, the message arrives at the UE-A via the CSCF; At this point, the early media resource negotiation of the color image is completed, and the normal media resource of the color image is also negotiated, and the color image AS can control the media server to play the color image media information to the UE-B; Step 409: UE-B answers the call, sends a response message, for example, sends a "200 OK" message, and the message passes through the CSCF to reach the color image AS. Step 410: The color image AS forwards the response message to the UE-A, and the message arrives at the UE via the CSCF. A. So far, UE-A and UE-B realize the call through the forwarding of the media server, and the media server continues to play the color image media data to the UE-B by mixing the color image media data into the media data sent by the UE-B.

Embodiment 4 FIG. 5 is a flowchart of continuing to play a color image after answering according to Embodiment 4 of the present invention, describing a called party called a call, and the media server plays a color image to the called party during the call, and continues to respond after the response. The process of playing the color image by the called party is as follows: Step 501 503 is the same as step 401 403 of the third embodiment; Step 504, the color image AS receives the response message, and decides to continue playing the color image after the response (according to If the step 503 carries the early media indication decision;), and forwards the response message, the message arrives at the UE-A via the CSCF; Step 505: The UE-A receives the response message, and then completes the negotiation of the call media according to the SDP response 2 therein. And sending a pre-acknowledgment request message or an update message with a new SDP request 3 (in some cases, the pre-confirmation request message will carry an SDP request, when it is not relevant to the present invention), such as sending a PRACK message or an UPDATE message, The message passes through the CSCF to reach the color image AS; Step 506: The color image AS receives the pre-acknowledgment or update message, and adds the early media SDP request 4 of the color image early media resource information, for example, to the early-session type. With the early media SDP request 4, the color image AS combines the media resource information of the media server and the media resource information of the SDP request 3 into one SDP request 5, and carries the SDP request 5 into the forwarded pre-acknowledgment or update message. For example, carrying the SDP request 5 in the session type, and then forwarding the pre-acknowledgment or update message, the message Step 507: The UE-B receives the pre-acknowledgment or update message, completes the media negotiation of the normal call according to the SDP request 5 therein, and negotiates the early media according to the early media SDP request 4, and then sends the response. The message, for example, sends a "200 OK" message, carries the early media SDP response 6 of the UE-B, for example, carries the early media SDP response 6 of the UE-B in the early-session type, and carries the UE-B for the call service needs. SDP response 7 , the message passes through the CSCF to reach the color image AS; since the SDP request 5 has both the media resource information of the UE-A and the media resource information of the media server, the UE-B is ready to receive the UE-A and the media simultaneously. The media data of the server. Step 508: The color image AS receives the response message, completes the negotiation of the color image early media according to the early media SDP response 6 of the UE-B, and controls the media server to complete the media negotiation according to the SDP response 7 of the UE-B. Then, the early media SDP response 6 is deleted, the media resource information related to the media server in the SDP response 7 is deleted, and then the SDP response is changed to 8 and the response message carrying the SDP response 8 is forwarded to the UE-A, and the message arrives at the UE via the CSCF. -A; At this point, the early media resource negotiation of the color image is completed, the normal media resource of the color image is also negotiated, and the color image AS can control the media server to play the color image media information to the UE-B; Step 509, the UE-B answers the call, Sending a response message, for example, sending a "200 OK" message, the message passing through the CSCF, reaching the color image AS; Step 510, the color image AS forwards the response message to the UE-A, and the message arrives at the UE-A via the CSCF. So far, UE-A and UE-B can directly talk, and the media server also sends the color image media data to UE-B, and UE-B mixes the media data of UE-A and the color image media data.

As shown in FIG. 6, the apparatus for implementing the color image playback after the response is applied to the color image AS includes a negotiation module and a control module. The negotiation module is configured to: after receiving the SIP request message of the session, The SDP request is carried in the forwarded SIP request message, where the SDP request includes the media resource information of the media server to complete the negotiation of the media resource of the media server; or, after receiving the SIP request message of the session, Forwarding the SIP request message, and after receiving the response message of the SIP request message, when the response message carries an indication of supporting the early media, the forwarded response message carries an SDP request, where the SDP request includes the media of the media server. The resource information control module is configured to: after receiving the response message of the session, instruct the media server to play the color image media data to the called party. The SIP request message is a call request message or a pre-acknowledgment request message or an update request message.

One of ordinary skill in the art will appreciate that all or a portion of the steps above may be accomplished by a program to instruct the associated hardware, such as a read-only memory, a magnetic disk, or an optical disk. Alternatively, all or part of the steps of the above embodiments may also be implemented using one or more integrated circuits. Correspondingly, each module/unit in the above embodiment may be implemented in the form of hardware or in the form of a software function module. The invention is not limited to any specific form of combination of hardware and software.

It is a matter of course that the invention may be embodied in various other forms and modifications without departing from the spirit and scope of the invention.

Industrial Applicability The present invention can effectively shorten the setup time of a normal call and improve the user experience.

Claims

Claim

A method for continuing to play a color image after the response, the method comprising: during a session establishment process, after the color image application server (AS) receives the session initiation protocol (SIP) message, forwarding the SIP request a message, the forwarded SIP request message carries a session description protocol (SDP) request, the SDP request includes media resource information of the media server; and the color image AS receives the response message of the session, and instructs the media server to call the called The party plays the color image media data.

2. The method of claim 1, wherein the SIP request message is a call request message.

3. The method according to claim 1, wherein the SIP request message is a pre-acknowledgment request message or an update request message.

4. The method according to claim 1, wherein the SDP request further includes media resource information of the calling party.

5. The method according to claim 1 or 3, wherein the step of instructing the media server to play the color image media data to the called party comprises: the color image AS instructing the media server to forward between the calling party and the called party The media data, and the color image media data is mixed into the media data sent by the called party.

The method according to claim 1 or 4, wherein after the step of instructing the media server to play the color image media data to the called party, the method further comprises: the called party to receive the received color image media data and normal The call data is mixed.

7. An implementation method for continuing to play a color image after the response, comprising: After the session establishment process, the color image application server (AS) receives the session initiation protocol (SIP) request message, and forwards the SIP request message; the color image AS receives the response message of the SIP request message, and determines Whether the response message of the SIP request message carries an indication of supporting early media, and forwards the response message, and when the response message carries an indication supporting early media, the response message carries a Session Description Protocol (SDP) request, the SDP Requesting media resource information including the media server; and after receiving the response message of the session, the color image AS instructs the media server to play the color image media data to the called party.

8. The method of claim 7, wherein the SIP request message is a call request message.

9. The method according to claim 7, wherein the SIP request message is a pre-acknowledgment request message or an update request message.

10. The method according to claim 7, wherein the SDP request further includes media resource information of the calling party.

The method according to claim 7 or 9, wherein the step of instructing the media server to play the color image media data to the called party comprises: the color image AS instructing the media server to forward the between the calling party and the called party The media data, and the color image media data is mixed into the media data sent by the called party.

The method according to claim 7 or 10, wherein after the step of instructing the media server to play the color image media data to the called party, the method further comprises: the called party to receive the received color image media data and normal The call data is mixed.

13. An implementation device for continuing to play a color image after the response, is applied to the color image AS, and the device includes a negotiation module and a control module; The negotiation module is configured to: after receiving the session initiation protocol (SIP) request message of the session, the forwarded SIP request message carries a session description protocol (SDP) request, where the SDP requests the media resource information of the packet server Or, after receiving the SIP request message of the session, forwarding the SIP request message, and after receiving the response message of the SIP request message, when the response message carries the indication of supporting the early media, the SDP is carried in the forwarded response message. The SDP request includes the media resource information of the media server. The control module is configured to: after receiving the response message of the session, instruct the media server to play the color image media data to the called party.

14. The apparatus of claim 13, wherein: the SIP request message is a call request message or a pre-acknowledgment request message or an update request message.