CN102523222A - Processing method for videophone call receding and processing system for same - Google Patents

Processing method for videophone call receding and processing system for same Download PDF

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CN102523222A
CN102523222A CN2011104307250A CN201110430725A CN102523222A CN 102523222 A CN102523222 A CN 102523222A CN 2011104307250 A CN2011104307250 A CN 2011104307250A CN 201110430725 A CN201110430725 A CN 201110430725A CN 102523222 A CN102523222 A CN 102523222A
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audio
message
receiving
mgcf
called
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CN2011104307250A
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CN102523222B (en
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孔力
尹卫兵
张文钺
张智江
朱斌
朱爱华
杨剑键
杨艳松
王明会
符刚
陈国利
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中国联合网络通信集团有限公司
中讯邮电咨询设计院有限公司
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Abstract

The invention provides a processing method for videophone call receding and a processing system for the same. The method includes the steps of after a called terminal of a CS (circuit switched) domain receives a video call request initiated by a calling terminal of an IMS (IP multimedia subsystem) domain and selects audio answering, sending release information to a VIG (video interworking gateway), wherein the release information carries reason codes to indicate that the called terminal selects audio answering; sending error messages to an AS (application server) on the side of the IMS after the VIG receives the release information; and initiating audio media negotiation and resetting up audio call after the AS on the side of the IMS receives the error messages. The processing method can avoid the charging problem due to videophone call receding.

Description

可视电话回落的处理方法和系统 Videophone drop processing method and system

技术领域 FIELD

[0001] 本发明涉及移动通信技术领域,尤其涉及一种可视电话回落的处理方法和系统。 [0001] The present invention relates to the technical field of mobile communications, and particularly relates to a method and system for processing videophone fall. 背景技术 Background technique

[0002] 现有技术中,IP多媒体子系统(IP Multimedia Subsystem, IMS)域和电路交换(Circuit Switched,⑶)域可以互通。 [0002] In the prior art, IP multimedia subsystem (IP Multimedia Subsystem, IMS) and circuit switched domain (Circuit Switched, ⑶) domain can communicate. IMS域用户可以视频呼叫CS域用户,当CS域用户选择视频接听后,两者可以进行视频呼叫业务。 IMS domain user can video call CS domain user, when the user selects a video to answer the CS domain, both of which may be a video call service. 如果CS域用户不选择视频接听而选择音频接听后,目前协议中可以由IMS域用户重新发起针对音频的二次媒体协商。 If the CS domain user does not choose to answer the video and audio choice answer, the current agreement can be re-initiated by the IMS domain user consultations on secondary media audio. 对于不支持更新(update)的终端,在针对音频的媒体协商时,需要主叫侧应用服务器(Application Server,AS)向主叫终端返回2000K消息,以便主叫终端在接收到2000K消息后重新发起音频的媒体协商。 For the terminal does not support update (update), and when negotiating for audio media, need to calling side application server (Application Server, AS) returns 2000K message to the calling terminal to re-initiate the calling terminal after receiving the message 2000K audio media negotiation. 但是,由于AS为网络侧设备,AS在向终端在发送2000K消息时,该2000K 消息同时会被发送到网络侧的计费网元,例如呼叫会话控制功能(Call Session Control Function, CSCF),并且计费网元在接收到2000K消息后会进行计费,因此现有技术中发送2000K消息后会引发计费问题。 However, since the AS network side device, while sending AS the message 2000K, 2000K the message will also be sent to the network side of the charging network element to the terminal, such as call session control function (Call Session Control Function, CSCF), and charging network element after receiving the billing message 2000K, 2000K message after sending so the prior art will lead to billing issues.

发明内容 SUMMARY

[0003] 本发明提供一种可视电话回落的处理方法和系统,当CS域用户不接听IMS域用户发起的视频业务后,主叫侧AS可以直接发起音频呼叫,IMS用户直接收听音频彩铃,避免不支持Update的终端为收听音频彩铃进行二次协商引起的计费问题。 [0003] The present invention provides a videophone drop processing method and system, when the CS domain user does not answer the IMS domain user initiates a video service, the calling side AS may directly initiate an audio call, the user directly listen to audio CRBT IMS, Update does not support the terminal to avoid billing problems caused by secondary consultation to listen to the audio ring tones.

[0004] 本发明提供了一种可视电话回落的处理方法,包括: [0004] The present invention provides a method for processing video telephone down, comprising:

[0005] CS域被叫终端在接收到IMS域主叫终端发起的视频呼叫请求,并选择音频接听后,向VIG发送释放消息,所述释放消息中携带原因值,以表明被叫选择音频接听; [0005] CS domain called video terminal, after receiving a call request initiated by the calling terminal in the IMS domain, and selects an audio answer, sends a release message to the VIG, the release message carries the cause value in order to indicate that the called audio selection answer ;

[0006] VIG接收到所述释放消息后,向IMS侧的AS发送错误消息; [0006] VIG after receiving the release message, sending an error message to the AS IMS side;

[0007] IMS侧的AS接收到错误消息后,发起音频媒体协商,重新建立音频呼叫。 After AS [0007] IMS side receive an error message, initiate audio media negotiation, re-establish the audio call.

[0008] 本发明提供了一种可视电话回落的处理系统,包括: [0008] The present invention provides a system for processing video phone down, comprising:

[0009] VIG,用于接收CS域的被叫终端发送的释放消息,并根据所述释放消息确定被叫选择音频接听后发送错误消息,所述释放消息为所述被叫终端在接收到IMS域主叫终端发起的视频呼叫请求,并选择音频接听后发送的,所述释放消息中携带原因值,以表明被叫选择音频接听; [0009] VIG, for receiving a release message sent to the CS domain of the called terminal, and determines that the called select send an error message to the audio answering The release message, the release message to the called terminal receiving the IMS domain calling terminal initiates a video call request, and select the audio answer sent after the release message carries the cause value in order to indicate that the called select an audio answer;

[0010] AS,位于IMS域内,用于接收所述VIG发送的所述错误消息,并在接收到所述错误消息后,发起音频媒体协商,重新建立音频呼叫。 [0010] AS, located in the IMS domain, for receiving the error message sent by the VIG, and after receiving the error message, initiates audio media negotiation, re-established audio call.

[0011] 由上述技术方案可知,本发明实施例中被叫选择音频接听后,向VIG发送释放消息,之后VIG向IMS域的AS发送错误消息,使得IMS域的AS接收到错误消息后重新发起音频媒体协商,而不是由主叫终端发起的音频协商,也就不需要IMS域的AS向IMS域的主叫终端发送2000K消息,由于没有发送2000k消息也就可以避免现有技术中主叫终端为收听音频彩铃进行二次协商弓I起的计费问题。 [0011] apparent from the foregoing technical solutions, embodiments of the present invention, after the called embodiments select an audio answer, sends a release message to the VIG, VIG then sends an error message to the AS IMS domain, such domain re-initiate AS IMS after receiving the error message audio media negotiation, instead of the audio negotiation initiated by the calling terminal, it does not need to send the AS of the IMS domain 2000K message to the calling terminal in the IMS domain, 2000k message is not transmitted because it avoids the prior art the calling terminal billing problems secondary consultation bow I was listening to the audio ring tones. 附图说明 BRIEF DESCRIPTION

[0012] 为了更清楚地说明本发明实施例中的技术方案,下面将对实施例描述中所需要使用的附图作一简单地介绍,显而易见地,下面描述中的附图是本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动性的前提下,还可以根据这些附图获得其他的附图。 [0012] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings will be described below as required in the embodiment, a brief introduction Apparently, the drawings in the following description of the present invention, some embodiments, those of ordinary skill in the art is concerned, without any creative effort, and can obtain other drawings based on these drawings.

[0013] 图1为本发明第一实施例的方法流程示意图; [0013] FIG. 1 a first embodiment of a schematic flowchart of a method of the present invention;

[0014] 图2为本发明实施例中IMS域和CS域互通的示意图; [0014] FIG. 2 is a schematic embodiment of the IMS domain and the CS domain interworking embodiment of the present invention;

[0015] 图3为本发明第二实施例的方法流程示意图; [0015] FIG 3 a second embodiment of a schematic flowchart of a method embodiment of the present invention;

[0016] 图4为本发明实施例中视频媒体协商流程示意图; [0016] FIG. 4 is a schematic representation of a video media negotiation process embodiment of the present invention;

[0017] 图5为本发明实施例中音频媒体协商流程示意图; [0017] FIG. 5 is a schematic diagram of the embodiment of audio media negotiation process of the present invention;

[0018] 图6为本发明第三实施例的系统结构示意图; [0018] FIG. 6 is a schematic system configuration of a third embodiment of the present invention;

[0019] 图7为本发明第四实施例的系统结构示意图。 [0019] FIG. 7 is a schematic system configuration of a fourth embodiment of the present invention.

具体实施方式 Detailed ways

[0020] 为使本发明实施例的目的、技术方案和优点更加清楚,下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例是本发明一部分实施例,而不是全部的实施例。 [0020] In order that the invention object, technical solutions, and advantages of the embodiments more clearly, the following the present invention in the accompanying drawings, technical solutions of embodiments of the present invention are clearly and completely described, obviously, the described the embodiment is an embodiment of the present invention is a part, but not all embodiments. 基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。 Based on the embodiments of the present invention, all other embodiments of ordinary skill in the art without any creative effort shall fall within the scope of the present invention.

[0021] 图1为本发明第一实施例的方法流程示意图,包括: The method of flow [0021] FIG. 1 is a first schematic embodiment of the invention, comprising:

[0022] 步骤11 :CS域被叫终端在接收到IMS域主叫终端发起的视频呼叫请求,并选择音频会话后,向VIG发送释放消息,所述释放消息中携带原因值,以表明被叫选择音频接听; [0022] Step 11: CS domain called video terminal, after receiving a call request initiated by the calling terminal in the IMS domain, and selects an audio session, sends a release message to the VIG, the release message carries the cause value in order to indicate that the called select the audio answer;

[0023] 步骤12 =VIG接收到所述释放消息后,向IMS侧的AS发送错误消息; After [0023] Step 12 = VIG receives the release message, sending an error message to the AS IMS side;

[0024] 其中,上述的释放消息和错误消息可以采用现有技术实现,并且释放消息中的原因值可以携带在释放消息的reason字段,该原因值的具体值可以根据需要预先定义。 [0024] wherein said release message and error message can be implemented using the prior art, and the release cause value in the message may be carried in the reason field release message, the reason the particular value can be predefined as desired.

[0025] 步骤13 :IMS侧的AS接收到错误消息后,发起音频媒体协商,重新建立音频呼叫。 [0025] Step 13: The AS IMS side receives the error message, initiates audio media negotiation, re-established audio call.

[0026] 其中,本实施例中被叫在选择音频接听后,向IMS侧的AS发送错误消息,IMS侧的AS根据该错误消息可以重新发起针对音频的语音呼叫请求。 [0026] wherein the called embodiments of the present embodiment, after selecting the audio answer, send an error message to the AS IMS side, AS IMS side may re-initiate a call request for a voice audio message based on the error. 由于不是主叫终端为收听音频彩铃进行二次协商请求,因此,可以避免音频二次协商时引起的计费问题。 Because not calling terminal secondary negotiation request to listen to the audio ring tones, therefore, cause billing problems can be avoided when the secondary audio negotiation.

[0027] 本实施例中被叫选择音频接听后,向VIG发送释放消息,之后VIG向IMS域的AS 发送错误消息,使得IMS域的AS接收到错误消息后重新发起音频媒体协商,而不是由主叫终端发起的音频协商,也就不需要IMS域的AS向IMS域的主叫终端发送2000K消息,由于没有发送2000k消息也就可以避免现有技术中主叫终端为收听音频彩铃进行二次协商引起的计费问题。 [0027] In the present embodiment, after the called party to select the audio answer, sends a release message to the VIG, VIG then sends an error message to the AS IMS domain, such domain re-initiate AS IMS after receiving the error message audio media negotiation, and not by the calling terminal initiates audio negotiation, there is no need to send aS IMS domain 2000K message to the calling terminal in the IMS domain, since it does not send a message 2000k prior art can be avoided calling terminal secondary to listen to audio ring tones consult billing problems caused.

[0028] 图2为本发明实施例中IMS域和CS域互通的示意图,参见图2,包括媒体网关控制功能(Media Gateway Control Function,MGCF)、IP 多媒体网关(IP Multimedia Media Gateway, IM-MGW)、服务网关(Serving Gateway, SGW)、呼叫会话控制功能(Call Session Control Function, CSCF)和出口网关控制功能(Breakout Gateway Control Function, BGCF)。 [0028] FIG. 2 is a schematic diagram of the IMS domain and the CS domain interworking embodiment of the invention, referring to FIG. 2, comprises a media gateway control function (Media Gateway Control Function, MGCF), IP multimedia gateway (IP Multimedia Media Gateway, IM-MGW ), serving gateway (serving gateway, SGW), call session control function (call session control function, CSCF) and Breakout gateway control function (Breakout gateway control function, BGCF). 各网元之间的连线为实线表明是用户面,为虚线表明为控制面。 The connection between the network element is a solid line indicates that a user plane, a control plane for the dashed line indicates.

5[0029] 其中,MGCF用于完成协议转换功能,包括会话建立协议(Session Initiation Protocol,SIP)和综合业务数字网用户部分Gntegrated Service Digital Network User Part, ISUP)协议之间的转换,也就是用于IMS网络和公共交换电话网(Public Switched Telephone Network, PSTN)、2G网络之间;也用于SIP协议和与承载无关的呼叫控制协议(Bearer Independent Call Control protocol,BICC)之间的转换,也就是用于IMS 网络和3G电路域之间;同时还应支持SIP协议和非电路相关No. 7信令消息之间的互通,并通过信令网关实现和CS域之间的互通。 5 [0029] where, MGCF to complete the protocol conversion functions, including the establishment of a session protocol (Session Initiation Protocol, SIP) and Integrated Services Digital Network User Part Gntegrated Service Digital Network User Part, ISUP) protocol conversion between, it is to use in the IMS network and between public switched telephone network (public switched telephone network, PSTN), 2G network; and also for the SIP call control protocol conversion between the bearer independent (bearer independent call control protocol, BICC), also It is used between the IMS network and the 3G circuit domain; should also support interworking between SIP protocol and No. 7 non-circuit related signaling messages, and interworking between the CS domain and is achieved by signaling gateway. MGCF通过协议转换功能实现了IMS域与CS域在控制平面(Control Plane)的互通。 MGCF of the IMS domain implement interworking with the CS domain control plane (Control Plane) by a protocol conversion function.

[0030] MGCF还用于对媒体网关进行控制,如控制媒体网关上相关资源的分配、修改和释放,以及控制媒体网关执行相关编解码转换等。 [0030] MGCF is further configured to control the media gateway control allocation of resources in the media gateway, modification and release, and performs control related to the media gateway codec conversion. MGCF对媒体网关的控制通过Mn接口的H. 248来实现。 MGCF Media Gateway Control of the Mn by the H. 248 to implement the interface.

[0031 ] MGCF还用于和CSCF中的服务会话控制设备(S-CSCF)以及CSCF中的查询会话控制设备(I-CSCF)进行交互,当收到来自PSTN网络、3G/2G电路域的呼叫请求时,将请求消息路由到相应设备。 [0031] MGCF is further configured and serving session control apparatus (S-CSCF) CSCF in the CSCF queries the session and a control device (I-CSCF) interacts, when the received 3G / 2G call from the PSTN network, a circuit domain request, the request message is routed to the appropriate device.

[0032] IM-MGW媒体网关位于IMS核心网和CS域之间,完成用户平面^serPlane)间的互通,以便实现这些网络之间承载层的互通,媒体网关接收媒体网关控制设备的控制,主要提供编解码转换等相关功能。 [0032] IM-MGW Media Gateway is located between the CS domain and the IMS core network, of the user plane interworking between ^ serPlane), in order to achieve interoperability between the bearer network layer, a media gateway receiving the media gateway control apparatus, the main providing codec conversion and other related functions.

[0033] SGff位于IMS核心网和传统No. 7信令网之间,负责对No. 7信令消息进行转接、翻译或终结处理,主要实现对No. 7信令消息的底层适配,以便在IP网和No. 7信令网之间传送No. 7信令消息。 [0033] SGff positioned between the IMS core network and a conventional No. 7 signaling network, responsible for No. 7 signaling message transfer, or terminate the translation process, the main achievement of the underlying adaptation No. 7 signaling message, No. 7 signaling messages for transmission between the IP network and the No. 7 signaling network. 信令网关可独立设置也可与MGCF或IM-MGW合设。 Signaling gateway may also be provided independently or IM-MGW and MGCF Joint.

[0034] BGCF是具有路由功能的实体,完成在IMS到CS域呼叫时的路由选择,决定呼叫信令向哪个网络(下一个BGCF)或者哪个互通单元(MGCF)传送。 [0034] BGCF entity routing function is complete when the routing to the CS domain call in the IMS, the decision to which the call signaling network (next BGCF) or which interworking unit (the MGCF) transmission.

[0035] 上述的BGCF、CSCF属于IMS域的实体,另外,IMS域还包括IMS域的AS。 [0035] The above-described BGCF, CSCF entities belonging to the IMS domain, in addition, the IMS domain further comprising the AS of the IMS domain. 对于CS域, 具体可以包括网关移动交换中心(Gateway Mobile Switching Center,GMSC)、归属位置寄存器(Home Location Register,HLR)、彩铃平台和移动交换中心服务器(MSC Server)。 For CS domain, specifically may include a gateway mobile switching center (Gateway Mobile Switching Center, GMSC), a home location register (Home Location Register, HLR), ring back tone platform and the Mobile Switching Center Server (MSC Server).

[0036] 图3为本发明第二实施例的方法流程示意图,包括: The method of flow [0036] FIG. 3 is a second schematic embodiment of the invention, comprising:

[0037] 步骤301 =IMS域的主叫终端发起视频呼叫的媒体协商。 [0037] Step 301 = IMS domain calling terminal initiates a video call media negotiation.

[0038] 视频呼叫的媒体协商流程可以参见图4,包括: [0038] Media video call negotiation process may be found in FIG. 4, comprising:

[0039] 步骤401 =IMS域的主叫终端向IMS域的AS发送请求(Invite)消息,Invite消息中包含SDP type字段,对于视频呼叫,其中的SDP type表明为视频呼叫。 Calling terminal [0039] Step 401 = IMS AS IMS domain to the domain of the transmission request (the Invite) message, the Invite message includes SDP type field, for a video call, which indicates that the SDP type of video call.

[0040] 步骤402 =IMS域的AS向S-CSCF转发该invite消息。 [0040] Step 402 = IMS domain AS forwards the invite message to the S-CSCF.

[0041] 步骤403 =S-CSCF根据该hvite消息中的SDP type确定为视频呼叫,则向视频互通网关(Video Interworking Gateway, VIG)转发Invite 消息。 [0041] Step 403 = S-CSCF based on the SDP type hvite message is determined to be a video call, forwards the Invite message to the interworking gateway video (Video Interworking Gateway, VIG).

[0042]步骤 404 :VIG 向GMSC 发送初始地址消息(Initial Address Message, IAM)。 [0042] Step 404: VIG sends an initial address message (Initial Address Message, IAM) to the GMSC. 其中,该IAM中可以携带SS-code字段,且SS-code字段表明为视频呼叫。 Wherein, the IAM may carry SS-code field, and SS-code field indicates the video call.

[0043] 步骤405 :GMSC按照默认流程处理呼叫,例如,向HLR查询被叫用户的用户信息,其中HLR返回的查询结果中包括彩铃标志码,当返回彩铃标志码后,GMSC可以获知被叫用户签约了彩铃业务,之后可以指示彩铃平台发送彩铃。 [0043] Step 405: GMSC call processing according to the default process, e.g., the called user's query to the HLR subscriber information, wherein the query results returned by the HLR includes CRBT identification code, when the return flag code CRBT, the called user may know the GMSC signed CRBT service, then you can send ring tones indicating RBT platform.

[0044] 步骤406 =GMSC根据查询结果,按照跨接方案处理,即,查询结果中包括彩铃标志码后,GMSC可以与彩铃平台进行跨接方案处理,例如将IAM路由至CS域的彩铃平台,并由彩铃平台将IAM下发到CS域的端局MSCServer ; [0044] Step 406 = GMSC according to the query result, according bridging program processing, i.e., the query result includes a rear CRBT identification code, the GMSC may be connected across the program processing CRBT platform, for example, the IAM is routed to the CS domain CRBT platform, IAM by the CRBT platform issued to the MSC of the CS domain the MSCServer;

[0045] 步骤407 =MSC Server寻呼到CS域的被叫终端,被叫终端向MSC Server返回地址全消息(Address Complete Message, ACM),该ACM消息也可以称为振铃消息,MSC Server 向彩铃平台转发ACM,并由彩铃平台向GMSC转发ACM,并由GMSC向VIG转发ACM ;另外,彩铃平台还可以根据IAM中的SS-code字段确定呼叫类型,本实施例中,此时的呼叫类型表明为视频呼叫。 [0045] Step 407 = MSC Server paging to the called terminal, the called terminal returns an address complete the CS domain message (Address Complete Message, ACM) to the MSC Server, the ACM message may also be referred alerting message, MSC Server to RBT platform ACM forwarding, by the CRBT platform to the GMSC forwards the ACM, ACM forwarded by the GMSC to the VIG; further, the CRBT platform may also be determined in accordance with the IAM call type SS-code field, in this embodiment, when the call type It shows a video call.

[0046] 步骤408 =VIG收到ACM消息后转成183消息,并将183消息经由S-CSCF和AS发送给IMS域的主叫终端,并和主叫终端进行协商,同时VIG和彩铃平台进行H. 245协商,协商成功后开始播放视频彩铃。 [0046] Step 408 = VIG receives the ACM message 183 to forward the message, and the message sent to the calling terminal 183 in the IMS domain via the S-CSCF and the AS, and the calling terminal and consultations, and at the same time CRBT platform VIG H. 245 negotiation, start playing the video RBT after the negotiation succeeds.

[0047] 步骤302 =CS域的被叫终端是否选择视频接听,若是,执行步骤303,否则执行步骤304。 [0047] Step 302 = CS domain of the called terminal to answer whether to select a video, and if so, step 303 is performed, otherwise step 304 is performed.

[0048] 步骤303 :被叫摘机,通话建立成功。 [0048] Step 303: the called party goes off-hook, the call is successfully established.

[0049] 步骤304 :被叫终端向VIG发送释放(release,rel)消息,并携带原因值,以便VIG 接收到该rel消息后,确定被叫选择了音频接听。 [0049] Step 304: the called terminal to the VIG sends a release (Release, rel) message, and carries the reason value to the VIG rel message is received, the called party is determined to answer the selected audio.

[0050] 其中,被叫终端内可以进行设置,例如设置成只进行音频接听,那么寻呼到被叫终端后,被叫终端在用户摘机前可以自动回复re 1消息。 [0050] wherein, the called terminal may be set, for example, arranged to receive audio only, the paging to the called terminal, the called terminal may automatically re 1 reply message before the user goes off-hook.

[0051] 步骤305 :VIG接收到携带上述原因值的rel消息后,向IMS侧的AS发送错误消息(500Server internal error)0 [0051] Step 305: After receiving the VIG rel message carries a cause value of the above, sends an error message (500Server internal error) 0 to AS IMS side

[0052] 步骤306 : IMS侧的AS发起音频媒体协商。 [0052] Step 306: AS IMS side initiates audio media negotiation.

[0053] 现有技术中,如果被叫终端选择音频接听,并且主叫终端不支持Update且需要二次媒体协商时,IMS域的AS还会向主叫终端发送2000K消息,之后主叫终端再向IMS域的AS重新发送Reinvite消息,重新发起针对音频的媒体协商。 [0053] In the prior art, if the called terminal to answer the selected audio, and when the calling terminal does not support the need for secondary Update and media negotiation, AS IMS domain also sends 2000K message to the calling terminal, the calling terminal again after Reinvite resend the message to the AS IMS domain, and re-initiate negotiations for audio media. 但是,2000K消息是会引起计费问题的。 However, 2000K news is cause billing problems. 而本实施例中,并不需要主叫终端重新发起协商,而是由AS重新发起协商,也就不需要AS向主叫终端发送2000K消息。 In the present embodiment, the calling terminal does not need to re-initiate negotiation, but the negotiation initiated by the AS again, there is no need 2000K AS sends a message to the calling terminal.

[0054] 音频媒体协商过程可以如图5所示,参见图5,包括: [0054] Audio media negotiation process can be shown in Figure 5, see Figure 5, comprising:

[0055] 步骤501 =IMS侧的AS接收到错误消息后,向S-CSCF发送invite消息,其中携带的SDP type表明为音频呼叫。 After 501 = AS IMS side [0055] the step of receiving the error message, sending invite message to S-CSCF, which carries the SDP type indicates that an audio call.

[0056] 步骤502 =S-CSCF收到hvite消息后,根据携带的SDP type为音频,向MGCF发送Invite 消息; [0056] Step 502 = S-CSCF after receiving the message hvite, audio, and sends an Invite message to the MGCF according to the included SDP type;

[0057] 步骤503 =MGCF将hvite消息转换为IAM发送到GMSC,GMSC按照默认流程处理, 例如,将IAM路由至CS域彩铃平台,并由彩铃平台将IAM消息下发到端局MSC Server ;其中,该IAM中可以携带SS-code字段,且SS-code字段表明为音频呼叫。 [0057] Step 503 = MGCF converts the message sent to hvite IAM to the GMSC, GMSC according to the default processing flow, e.g., the IAM is routed to the CS domain CRBT platform, the CRBT platform by the IAM message is sent to the end office MSC Server; wherein the IAM may carry SS-code field, and SS-code field indicates the audio call.

[0058] 步骤504 =MSC Server寻呼到被叫用户,被叫用户返回ACM消息,MSC^erver向彩铃平台发送ACM消息,彩铃平台根据IAM中的SS-code字段确定发送音频彩铃,并且彩铃平台向GMSC转发ACM,并由GMSC向MGCF转发ACM。 [0058] Step 504 = MSC Server paging to the called user, the called user returns an ACM message, MSC ^ erver transmits an ACM message to the ring back tone platform, the CRBT platform determines that the audio transmission of the IAM CRBT according to SS-code field, and the ring back tone platform ACM forwarded to the GMSC, GMSC forwards by ACM to the MGCF.

[0059] 步骤505 :MGCF收到ACM后转换成183消息,在被叫摘机接听之前,彩铃平台直接为主叫终端播放音频彩铃,而不需要MGCF与主叫终端为听音频彩铃进行二次协商; [0059] Step 505: MGCF 183 converts the received message into the ACM, before the called party goes off-hook to answer, the calling terminal directly to ring back tone platform to play audio CRBT without MGCF with the calling terminal to hear a CRBT secondary audio consultation;

[0060] 步骤506 :主叫终端接收到彩铃后,不对实时传输协议源(Real-time TransferProtocol source, RTP source)进行检查。 [0060] Step 506: After receiving the calling terminal CRBT, not real-time transport protocol source (Real-time TransferProtocol source, RTP source) to be checked.

[0061] 由于主叫终端在开始时请求的是视频,而最后收到的是音频,如果进行RTP source检查,则主叫终端会发现出现了错误,那么很可能就会中断通话。 [0061] Since the calling terminal is requested at the beginning of the video, audio and last received, if the RTP source inspection, the calling terminal will find that an error has occurred, then it might interrupt the call. 为了避免通话中断,本实施例中主叫终端不检查RTP source。 In order to avoid dropped calls, the calling terminal according to the present embodiment does not check RTP source.

[0062] 步骤507 :被叫摘机,MGCF收到应答消息(Answer Message, AW)后向主叫侧S-CSCF发送2000K消息,S-CSCF将2000K消息发给IMS域的AS ; [0062] Step 507: the called party picks, MGCF receiving the response message (Answer Message, AW) transmits 2000K message to the calling side S-CSCF, S-CSCF the 2000K message to the AS IMS domain;

[0063] 步骤508 :IMS域的AS向MGCF重新发送hvite消息进行会话媒体协商; [0063] Step 508: AS IMS domain hvite resend message to the MGCF for session media negotiation;

[0064] 步骤509 =IMS域的AS接收MGCF的应答消息,并携带表明音频通话的SDP向主叫用户发送hvite消息进行媒体协商; [0064] Step 509 = IMS domain AS receives the reply message the MGCF, and carries information indicating that the audio calling SDP message sent to the calling user hvite media negotiation;

[0065] 步骤510 :媒体协商成功,媒体通道建立,主被叫开始语音通话。 [0065] Step 510: the media negotiation is successful, the media channel is established, the calling and called voice call begins.

[0066] 通过步骤508-509可以建立主叫侧的媒体通道,由于步骤501-506可以建立被叫侧的媒体通道,因此,主被叫可以通话,当然,现在是进行音频的通话,而不是视频通话。 [0066] The media channel may be established by the calling side, steps 508-509, steps 501-506 may be established since the media channel called side, therefore, can be called the main call, of course, is now an audio call, rather than video call.

[0067] 图6为本发明第三实施例的系统结构示意图,包括VIG 61和AS 62,VIG位于IMS 域和CS域之间,AS位于IMS域内。 [0067] FIG. 6 is a schematic system configuration of a third embodiment of the present invention, including VIG 61 and AS 62, VIG is located between the IMS domain and the CS domain, the AS located in the IMS domain. VIG 61用于接收CS域的被叫终端发送的释放消息,并根据所述释放消息确定被叫选择音频接听后发送错误消息,所述释放消息为所述被叫终端在接收到IMS域主叫终端发起的视频呼叫请求,并选择音频接听后发送的,所述释放消息中携带原因值,以表明被叫选择音频接听;AS 62用于接收所述VIG发送的所述错误消息, 并在接收到所述错误消息后,发起音频媒体协商,重新建立音频呼叫。 VIG 61 for receiving a release message sent to the CS domain of the called terminal, and determines that the called select send an error message to the audio answering The release message, the release message is received at the called terminal to the IMS domain calling the terminal initiates a video call request sent by the selected audio and answer the release message carries a cause value, to indicate that the called party to answer an audio selection; the error message AS 62 VIG is configured to receive the transmitted, received and after the error message, initiate audio media negotiation, re-establish the audio call.

[0068] 可选的,AS具体用于:在接收到错误消息后,在被叫用户摘机前,与被叫终端进行音频媒体协商,建立MGCF与被叫终端的音频媒体通道;在被叫用户摘机后,与主叫终端进行音频媒体协商,建立MGCF与主叫终端的音频媒体通道。 [0068] Alternatively, the AS is configured to: after receiving the error message before the called party picks up the phone, audio media negotiation with the called terminal, establishing a media channel audio MGCF and the called terminal; the called after the user lifts the handset, audio media negotiation with the calling terminal to establish the media channel audio MGCF with the calling terminal.

[0069] 可选的,参见图7,本实施例还可以包括S-CSCF 63, MGCF 64、GMSC65、MSC服务器66和彩铃平台67。 [0069] Optionally, referring to FIG. 7, the present embodiment may further include a S-CSCF 63, MGCF 64, GMSC65, MSC server 66 and the ring back tone platform 67. 此时,具体地,AS通过S-CSCF与VIG通信。 In this case, in particular, AS S-CSCF communicates with the VIG through. 另外,S-CSCF 63位于IMS 域内,用于接收所述AS发送的请求消息,所述请求消息为所述AS在接收到错误消息后发送的,所述请求消息表明为音频呼叫;MGCF 64位于CS域和IMS域之间,用于接收所述S-CSCF 转发的所述请求消息,并将所述请求消息转换为IAM,所述IAM表明为音频呼叫;GMSC 65位于CS域内,用于接收所述MGCF发送的所述IAM ;MSC服务器66位于CS域内,用于接收所述MGCF经过GMSC和彩铃平台发送的所述IAM,并在寻呼到被叫用户后,接收被叫终端发送端ACM,以及转发所述ACM给彩铃平台;彩铃平台67位于CS域内,用于接收所述GMSC转发的所述IAM并发送给MSC服务器,以及接收MSC服务器转发的所述ACM并经由GMSC发送给MGCF,并在接收到ACM后根据IAM向主叫终端发送音频彩铃;所述MGCF 64还用于在接收到所述ACM后不与主叫终端进行协商,以及,所述主叫终端在接收到彩铃后不对RTP源 Additionally, S-CSCF 63 located in the IMS domain, for receiving the request message sent by the AS, the AS sends the request message after receiving the error message, the request message indicates that an audio call; MGCF 64 is located between the CS domain and the IMS domain, for receiving the S-CSCF forwards the request message and the request message into an IAM, the IAM indicates that an audio call; GMSC 65 is located in CS domain, for receiving the the IAM sent by the MGCF; the MSC server 66 is located in CS domain, the MGCF receives the IAM to the GMSC via a CRBT platform and transmitted, and the paging to the called user, the called terminal sends the receiving end ACM , and forwards the ACM to the ring back tone platform; IAM CRBT platform 67 is located in the CS domain, for receiving the forwarding GMSC sends the MSC server, the MSC server receives and forwards the ACM and transmitted to the MGCF via the GMSC, upon receiving the ACM and IAM sent to the calling terminal according to the audio CRBT; the MGCF 64 for further receiving the ACM does not consult with the calling terminal and the calling terminal after receiving the RBT RTP does not source 行检查。 Check the line.

[0070] 可选的,所述MGCF 64还用于接收被叫用户摘机后,被叫终端发送的ANM,并发送2000K消息;所述S-CSCF 63还用于将所述2000K消息转发给AS ;所述AS 62还用于在接收到2000K消息后,重新向MGCF发送请求消息,请求建立音频媒体通道;所述MGCF 64还用于向所述AS返回与所述请求消息对应的应答消息;所述AS 62还用于在接收到所述应答消息后,向主叫终端发送请求消息,建立主叫终端与MGCF间的音频媒体通道。 [0070] Alternatively, the MGCF 64 further configured to receive a called subscriber goes off-hook, the called terminal sends the ANM and sends a 2000K message; the S-CSCF 63 is also configured to forward the message to 2000K AS; the AS 62 is further configured to, after receiving the 2000K message to the MGCF sends re-request message requesting the establishment of a media channel audio; for a further 64 MGCF returns a response message corresponding to the request message to the AS ; the AS 62 further configured to, after receiving the response message, sends a request message to the calling terminal, to establish an audio channel between the calling terminal media and MGCF.

[0071] 本实施例中被叫选择音频接听后,向VIG发送释放消息,之后VIG向IMS域的AS [0071] In the present embodiment, after the called party to select the audio answer, sends a release message to the VIG, after the domain to the IMS AS VIG

8发送错误消息,使得IMS域的AS接收到错误消息后重新发起音频媒体协商,而不是由主叫终端发起的音频协商,也就不需要IMS域的AS向IMS域的主叫终端发送2000K消息,由于没有发送2000k消息也就可以避免现有技术中主叫终端为收听音频彩铃进行二次协商引起的计费问题。 8 sends an error message, such that the AS in the IMS domain audio media negotiation reinitiate after receiving the error message, instead of audio negotiation initiated by the calling terminal, it does not need to send the AS of the IMS domain 2000K message to the calling terminal in the IMS domain Since it does not send a message 2000k prior art can be avoided calling terminal billing problems caused by secondary consultation to listen to the audio ring tones.

[0072] 本领域普通技术人员可以理解:实现上述方法实施例的全部或部分步骤可以通过程序指令相关的硬件来完成,前述的程序可以存储于计算机可读取存储介质中,该程序在执行时,执行包括上述方法实施例的步骤;而前述的存储介质包括:R0M、RAM、磁碟或者光盘等各种可以存储程序代码的介质。 [0072] Those of ordinary skill in the art can be appreciated: realize all or part of the steps of the method described above may be implemented by a program instructing relevant hardware to complete, the program may be stored in a computer readable storage medium, when the program execution , comprising the step of performing the above-described embodiment of the method; and the storage medium comprising: R0M, RAM, magnetic disk, optical disk or other media capable of storing program code.

[0073] 最后应说明的是:以上实施例仅用以说明本发明的技术方案,而非对其限制;尽管参照前述实施例对本发明进行了详细的说明,本领域的普通技术人员应当理解:其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分技术特征进行等同替换;而这些修改或者替换,并不使相应技术方案的本质脱离本发明各实施例技术方案的范围。 [0073] Finally, it should be noted that: the above embodiments are intended to illustrate the present invention, rather than limiting;. Although the present invention has been described in detail embodiments, those of ordinary skill in the art should be understood: may still be made to the technical solutions described in each embodiment of the modified or part of the technical features equivalents; as such modifications or replacements do not cause the essence of corresponding technical solutions to depart from the scope of the technical solutions of the embodiments of the present invention .

Claims (8)

1. 一种可视电话回落的处理方法,其特征在于,包括:CS域被叫终端在接收到IMS域主叫终端发起的视频呼叫请求,并选择音频接听后,向VIG发送释放消息,所述释放消息中携带原因值,以表明被叫选择音频接听; VIG接收到所述释放消息后,向IMS侧的AS发送错误消息; IMS侧的AS接收到错误消息后,发起音频媒体协商,重新建立音频呼叫。 1. A method of processing video phone down, characterized in that, comprising: CS domain called video terminal, after receiving a call request initiated by the calling terminal in the IMS domain, and selects an audio answer, sends a release message to the VIG, the said release message carries a cause value, to indicate that the called party to answer selected audio; VIG after receiving the release message, sending an error message to the AS IMS side; AS IMS side after receiving the error message, initiates audio media negotiation, re establish an audio call.
2.根据权利要求1所述的方法,其特征在于,所述IMS侧的AS接收到错误消息后,发起音频媒体协商,重新建立音频呼叫,包括:所述AS接收到错误消息后,在被叫用户摘机前,与被叫终端进行音频媒体协商,建立MGCF与被叫终端的音频媒体通道;所述AS在被叫用户摘机后,与主叫终端进行音频媒体协商,建立MGCF与主叫终端的音频媒体通道。 2. The method according to claim 1, characterized in that, after the IMS AS side receives the error message, initiates audio media negotiation, re-establish an audio call, comprising: the AS after receiving the error message, being before the called user goes off-hook, the called terminal with the audio media negotiation, establishing a media channel audio MGCF and the called terminal; AS after the called user goes off-hook, audio media negotiation with the calling terminal, and establishing the main MGCF audio media channel called terminal.
3.根据权利要求2所述的方法,其特征在于,所述AS接收到错误消息后,在被叫用户摘机前,与被叫终端进行音频媒体协商,建立MGCF与被叫终端的音频媒体通道,包括:所述AS接收到错误消息后,向S-CSCF发送请求消息,所述请求消息表明为音频呼叫; S-CSCF收到所述表明为音频呼叫的请求消息后,向MGCF发送所述请求消息; MGCF将所述请求消息转换为IAM后发送到GMSC,并经由GMSC发送给彩铃平台以及由彩铃平台发送给MSC服务器,所述IAM表明为音频呼叫;MSC服务器寻呼到被叫用户后,接收被叫终端发送的ACM,并将所述ACM经由彩铃平台和GMSC发送给MGCF,其中,MGCF接收到ACM后不与主叫终端进行媒体协商;彩铃平台接收到ACM后,根据IAM确定为音频呼叫后向主叫终端发送音频彩铃,其中, 主叫终端接收到彩铃后不对RTP源进行检查。 3. The method according to claim 2, wherein the AS after receiving the error message before the called party picks up the phone, audio media negotiation with the called terminal, the called-up audio media terminal MGCF channel, comprising: the aS after receiving the error message, sends a request message to the S-CSCF, the request message indicates that an audio call; S-CSCF receives the request message indicates that after an audio call, transmits to the MGCF said request message; the MGCF converts the request message transmitted after IAM to the GMSC, and sends to the GMSC via a CRBT platform and the CRBT platform is sent by the MSC server, the IAM indicates that an audio call; MSC paging server to the called user after receiving the called terminal sends the ACM, ACM and transmitted via the GMSC to the ring back tone platform and MGCF, wherein no media negotiation with the calling terminal after the MGCF receives the ACM; CRBT platform after receiving the ACM, determined according to the IAM after transmission of audio ring back tone to the calling terminal after an audio call, wherein the calling terminal receives the RTP source CRBT not be checked.
4.根据权利要求2所述的方法,其特征在于,所述AS在被叫用户摘机后,与主叫终端进行音频媒体协商,建立MGCF与主叫终端的音频媒体通道,包括:MGCF接收被叫用户摘机后,被叫终端发送的ANM,并经由S-CSCF向AS发送2000K消息;AS在接收到2000K消息后,重新向MGCF发送请求消息,请求建立音频媒体通道; AS在接收到MGCF的应答消息后,向主叫终端发送请求消息,建立主叫终端与MGCF间的音频媒体通道。 4. The method according to claim 2, wherein the AS after the called user goes off-hook, audio media negotiation with the calling terminal to establish the media channel audio MGCF with the calling terminal, comprising: receiving MGCF after the called party goes off-hook, the called terminal sends the ANM, and transmits the 2000K message to the AS via S-CSCF; AS after receiving the 2000K message to the MGCF sends re-request message, requesting the establishment of a media channel audio; AS receiving after the response message the MGCF sends a request message to the calling terminal, to establish an audio channel between the calling terminal media and MGCF.
5. 一种可视电话回落的处理系统,其特征在于,包括:VIG,用于接收CS域的被叫终端发送的释放消息,并根据所述释放消息确定被叫选择音频接听后发送错误消息,所述释放消息为所述被叫终端在接收到IMS域主叫终端发起的视频呼叫请求,并选择音频接听后发送的,所述释放消息中携带原因值,以表明被叫选择音频接听;AS,位于IMS域内,用于接收所述VIG发送的所述错误消息,并在接收到所述错误消息后,发起音频媒体协商,重新建立音频呼叫。 A drop of the videophone processing system comprising: VIG, for receiving a release message sent to the CS domain of the called terminal, and determines the called party sends an error message after selecting an audio message to answer the release in accordance with the release message to the called terminal receives a video call request initiated by the calling terminal in the IMS domain, and transmit selected audio answer after the release message carries a cause value, to indicate that the called party to answer an audio selection; the AS, located in the IMS domain, for receiving the error message sent by the VIG, and after receiving the error message, initiates audio media negotiation, re-established audio call.
6.根据权利要求5所述的系统,其特征在于,所述AS具体用于:在接收到错误消息后,在被叫用户摘机前,与被叫终端进行音频媒体协商,建立MGCF 与被叫终端的音频媒体通道;在被叫用户摘机后,与主叫终端进行音频媒体协商,建立MGCF与主叫终端的音频媒体通道。 6. The system as claimed in claim 5, wherein the AS is configured to: after receiving the error message before the called party picks up the phone, audio media negotiation with the called terminal, and establishing the MGCF audio media channels called terminal; when the called user goes off-hook, audio media negotiation with the calling terminal to establish the media channel audio MGCF with the calling terminal.
7.根据权利要求6所述的系统,其特征在于,还包括:S-CSCF,位于IMS域内,用于接收所述AS发送的请求消息,所述请求消息为所述AS在接收到错误消息后发送的,所述请求消息表明为音频呼叫;MGCF,用于接收所述S-CSCF转发的所述请求消息,并将所述请求消息转换为IAM,所述IAM表明为音频呼叫;GMSC,位于CS域内,用于接收所述MGCF发送的所述IAM ;MSC服务器,位于CS域内,用于接收所述MGCF经过GMSC和彩铃平台发送的所述IAM, 并在寻呼到被叫用户后,接收被叫终端发送端ACM,以及转发所述ACM给彩铃平台;彩铃平台,位于CS域内,用于接收所述GMSC转发的所述IAM并发送给MSC服务器,以及接收MSC服务器转发的所述ACM并经由GMSC发送给MGCF,并在接收到ACM后根据IAM向主叫终端发送音频彩铃;所述MGCF还用于在接收到所述ACM后不与主叫终端进行协商,以及,所述主叫终端在 7. The system according to claim 6, characterized in that, further comprising: S-CSCF, is located in the IMS domain, for receiving a request message sent by the AS, the AS in the request message is an error message received after transmission of the request message indicates that an audio call; the MGCF, for receiving the S-CSCF forwards the request message and the request message into an IAM, the IAM indicates that an audio call; the GMSC, located CS domain, for receiving the IAM sent by the MGCF; the MSC server, located in CS domain, the MGCF receives the IAM to the GMSC via a CRBT platform and transmitted, and paging the called subscriber, the ACM receives the called terminal sends a terminal, and forwarding the ACM to the ring back tone platform; CRBT platform, located in CS domain, the ACM to the GMSC receives the IAM is sent to the forwarding MSC server, and receiving the forwarding MSC server and sent via the GMSC to the MGCF, and after receiving the ACM sent audio CRBT to the calling terminal according to the IAM; for the MGCF without further consultation with the calling terminal after receiving the ACM, and the calling terminal 收到彩铃后不对RTP源进行检查。 After receiving ring tones right RTP source to be checked.
8.根据权利要求7所述的系统,其特征在于:所述MGCF还用于接收被叫用户摘机后, 被叫终端发送的ANM,并发送2000K消息;所述S-CSCF还用于将所述2000K消息转发给AS ;所述AS还用于在接收到2000K消息后,重新向MGCF发送请求消息,请求建立音频媒体通道;所述MGCF还用于向所述AS返回与所述请求消息对应的应答消息;所述AS还用于在接收到所述应答消息后,向主叫终端发送请求消息,建立主叫终端与MGCF间的音频媒体通道。 8. The system according to claim 7, wherein: the MGCF after receiving the ANM for further called user goes off-hook, the called terminal sends and transmits the 2000K message; the S-CSCF is further configured to 2000K message to the AS; the AS is further configured to, after receiving the 2000K message to the MGCF sends re-request message requesting the establishment of a media channel audio; the MGCF further configured to return the request message to the AS corresponding response message; the AS is further configured to, after receiving the response message, it sends a request message to the calling terminal, to establish an audio channel between the calling terminal media and MGCF.
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