CN101123645B - A method and system for multiple-in-one phone co-ring service - Google Patents

A method and system for multiple-in-one phone co-ring service Download PDF

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Publication number
CN101123645B
CN101123645B CN 200710145974 CN200710145974A CN101123645B CN 101123645 B CN101123645 B CN 101123645B CN 200710145974 CN200710145974 CN 200710145974 CN 200710145974 A CN200710145974 A CN 200710145974A CN 101123645 B CN101123645 B CN 101123645B
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China
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media
terminal
called terminal
description information
called
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CN 200710145974
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Chinese (zh)
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CN101123645A (en
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杨勇
甘洪波
韩银俊
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中兴通讯股份有限公司
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements or protocols for real-time communications
    • H04L65/10Signalling, control or architecture
    • H04L65/1013Network architectures, gateways, control or user entities
    • H04L65/1063Application servers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements or protocols for real-time communications
    • H04L65/10Signalling, control or architecture
    • H04L65/1066Session control
    • H04L65/1096Features, e.g. call-forwarding or call hold
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M3/00Automatic or semi-automatic exchanges
    • H04M3/42Systems providing special services or facilities to subscribers
    • H04M3/46Arrangements for calling a number of substations in a predetermined sequence until an answer is obtained
    • H04M3/465Arrangements for simultaneously calling a number of substations until an answer is obtained
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements or protocols for real-time communications
    • H04L65/10Signalling, control or architecture
    • H04L65/1066Session control
    • H04L65/1069Setup
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M7/00Interconnection arrangements between switching centres
    • H04M7/006Networks other than PSTN/ISDN providing telephone service, e.g. Voice over Internet Protocol (VoIP), including next generation networks with a packet-switched transport layer

Abstract

The present invention provides a method and a system for a plurality of phones just one number co-ringing service, and the method includes the following: a call request is received by AS from a calling terminal, then the call request is retransmitted to each called terminal with media description information of a common conversation from the calling terminal and a signal of supporting an early-media conversation; the media description information of the common conversation from the own terminal and media description information of the early-media conversation is transmitted to AS after each called terminal receiving the call request; the media description information of the early-media conversation from the called terminal is modified by AS, and the modified media description information is fed back to the corresponding called terminal, a ringing message is transmitted to the calling terminal; a called terminal is learned by AS after hanging on a call, then other called terminals are advised to hang up, and the media description information of the common conversation from the called terminal after hanging up is transmitted to the calling terminal, so the calling and the called cancommunicate. The present invention simplifies and standardizes the realization of a plurality of phones just one number co-ringing service, and effectively solves the matter of media packet loss caused by media switch in existing services.

Description

一种用于一号多机同振业务的方法及系统 One method for multi-machine system with vibration and business

技术领域 FIELD

[0001] 本发明涉及NGN网络中实现一号多机同振业务的方法及系统。 [0001] The present invention relates to the NGN network method and system for multi-tone service with the No. 1 crane. 背景技术 Background technique

[0002] 一号多机是NGN网络(下一代网络)中一个非常具有特色的业务,这种业务的业务特征在于,将多个物理终端与一个号码捆绑在一起,当主叫用户拨打该号码时,应用服务器同时去呼叫与该号码相关联的多个终端或者按照一定的顺序依次呼叫多个终端,也就是通常所说的同振业务或顺振业务。 [0002] One more machine is NGN Network (Next Generation Network) is a very distinctive service, this service is that the service features, to bundle a number of physical terminals and, when the calling user dials the number when the application server to simultaneously call a plurality of terminals associated with that number in a certain order or sequentially calling a plurality of terminals, which is commonly referred to with sequential ringing tone service or business. 目前,在NGN网络中开展的典型的特色业务包括一号通和一号双机业务,二者的业务逻辑完全一致。 Currently, the typical characteristics of business development in the NGN network, including One-on and one-number service, both business logic exactly the same. 二者的区别在于:在一号通业务中,与一号通号码相关联的终端数目可以有多个;而一号双机业务是把用户的固定电话和小灵通终端同时关联到一个号码上,所以终端数目只有两个。 The difference is that: in the telecommunication service, and the number of terminals Link Number may be associated with a plurality; one-number service and the user is fixed phones and PHS terminals simultaneously on a number associated with , the number of terminals is only two.

[0003] 对于一号多机类的业务,业务逻辑包括同振和顺振两种业务,业务逻辑的实现完全相同。 [0003] One machine for multiple service classes, service logic comprising cis vibrator vibrating with two services, exactly the same business logic. 特别地,对于同振业务,当用户代理客户端(UAC=UserAgent Client)将呼叫请求发送至用户代理服务端(UAS=User Agent Server)时,作为应用服务器的UAS需要同时去呼叫多个终端,出现了“分叉(fork)”这种比较典型的呼叫模型。 In particular, for a same tone service, when the user agent client (UAC = UserAgent Client) transmits the call request to the user agent server (UAS = User Agent Server), as UAS application server need to call to a plurality of terminals, a "bifurcation (fork)" this typical call model. 对于这种呼叫模型的处理,不同的应用服务器处理模式各不相同,而且更为重要的是,应用服务器必须有发起一次媒体切换的操作,才能保证一个终端摘机之后,主叫和该终端之间正常通话。 For the processing of this call model, different application servers different processing mode, but, more importantly, must have the application server initiates a media switching operation, in order to ensure that after a terminal hook, the calling terminal and the inter call normal. 而这个媒体切换操作通常会造成被叫的语音片的丢失,影响通话质量。 And this usually results in media switching operation called voice piece is lost, affecting call quality.

[0004] 图1所示为现有技术中实现一号双机同振业务的信令处理流程图。 [0004] Figure 1 is a process flow diagram with one-signaling tone service implemented in the prior art. 流程说明如下: Procedure is shown below:

[0005] 步骤101 :主叫UE-a发起呼叫,AS(应用服务器,Application Server)接收到INVITE (呼叫请求),其中携带主叫SDP-a(媒体描述信息),; [0005] Step 101: the calling UE-a originates a call, the AS (Application Server, Application Server) receiving the INVITE (call request), which carries the calling SDP-a (media description information) ,;

[0006] 步骤102 =AS向UE-a发送100TRYING (代表收到hvite等消息并准备处理); [0006] Step 102 = AS 100TRYING to send UE-a (hvite Representative received message and other preparation processing);

[0007] 步骤103 =AS改写SDP-a,将媒体连接地址改为0. 0. 0. 0,形成SDP_a',然后向被叫UE-b及被叫UE-c发送INVITE,其中携带SDP_a,; [0007] Step 103 = AS rewrite SDP-a, media connection address to 0. 0. 0. 0. formed SDP_a ', and then sends the INVITE to the called UE-b and the called UE-c, which carries SDP_A, ;

[0008] 步骤104 =AS接收到UE-b及被叫UE_c发来的100TRYING ; [0008] Step 104 = AS and UE-b receives the called UE_c sent to a 100 Trying;

[0009] 步骤105 =AS收到UE-b的180消息(振铃消息),向UE_b回PRACK (确认收到180 消息)之后收到UE-b发来的2000K (应答响应),完成可靠180的应答; [0009] Step 105 = AS receives the 180 message to UE-b (alerting message) received UE-b is sent to 2000K (acknowledgment response) after the PRACK to UE_b back (acknowledgment 180 message is received), complete and reliable 180 response;

[0010] AS收到UE-C的180消息,向UE_c回PRACK之后收到UE_c发来的2000K,完成可靠180的应答; [0010] AS receives the 180 message the UE-C, received the 2000K UE_c sent back after the PRACK UE_c, reliable and complete response 180;

[0011] 步骤106 =AS向主叫UE-a发送180消息,收到UE_a发来的PRACK之后向其发送2000K,完成可靠180的应答; After send 2000K [0011] Step 106 = AS 180 transmits a message to the calling UE-a, receives UE_a sent PRACK, reliable and complete response 180;

[0012] 步骤107 :假定被叫UE-c先摘机,AS收到UE-c发来的2000K消息(应答消息), 此时携带有SDP-c ; [0012] Step 107: the called UE-c is assumed that the first hook, the AS receives UE-c sent by the 2000K message (response message), then carrying the SDP-c;

[0013] 步骤108 =AS向UE-C发送ACK (确认消息); [0013] Step 108 = AS sends an ACK to the UE-C (acknowledgment message);

[0014] 步骤109〜112 :将UE-b挂机,AS向UE_b发送CANCEL,并依次完成相关事件的应 [0014] Step 109~112: The UE-b-hook, AS transmits to the CANCEL UE_b, and sequentially related events to be completed

4答; 4 A;

[0015]步骤 113 =AS 向UE-c 发送RE-INVITE,携带SDP-a ; [0015] Step 113 = AS RE-INVITE sent to the UE-c, carrying the SDP-a;

[0016]步骤 114 =AS 收到UE-c 发来的100TRYING ; [0016] Step 114 = AS received UE-c is sent by a 100 Trying;

[0017] 步骤115 :AS收到UE-c发来的2000K应答,其中携带SDP-c ; [0017] Step 115: AS receipt sent by the UE-c 2000K response carrying SDP-c;

[0018]步骤 116 =AS 向UE-c 发送ACK ; [0018] Step 116 = AS sends an ACK to the UE-c;

[0019] 步骤117 =AS向主叫UE-a回2000K,其中携带SDP-c ; [0019] Step 117 = AS 2000K back to the calling UE-a, which carries the SDP-c;

[0020] 步骤118 =AS收到UE-a发来的ACK ; [0020] Step 118 = AS received UE-a sent by the ACK;

[0021] 此后,主被叫进入通话状态。 [0021] Thereafter, the calling and called into the call.

[0022] 发明内容 [0022] SUMMARY OF THE INVENTION

[0023] 本发明要解决的技术问题是提供一种用于一号多机同振业务的方法及系统,能简便地实现一号多机同振业务,并能解决现有技术中因为媒体切换而造成的媒体包丢失。 [0023] The present invention is to solve the technical problem of providing a method and a system with multi-tone service for the No. 1 crane can easily No. 1 crane with multi-tone service, and can solve the prior art because the media switch the resulting media packet loss.

[0024] 为了解决上述问题,本发明提供了一种用于一号多机同振业务的方法,包括: [0024] In order to solve the above problems, the present invention provides a method for multi-machine with the 1st tone service, comprising:

[0025] a当应用服务器收到主叫终端发来的呼叫请求后将所述呼叫请求转发给各被叫终端,携带所述主叫终端的普通会话的媒体描述信息及支持早媒体会话的标志; [0025] a calling terminal when the application server receives the call request sent by the call request will be forwarded to each of the called terminal, the calling terminal carries media session description information, and general support early media session flag ;

[0026] b各被叫终端收到所述呼叫请求后向应用服务器发送本终端的普通会话的媒体描述信息及早媒体会话的媒体描述信息; [0026] b each called terminal receives the transmission medium common session of the terminal after the call request to the application server early media description information of a media session description information;

[0027] c应用服务器修改各被叫终端发来的早媒体会话的媒体描述信息,并将修改后的早媒体会话的媒体描述信息分别反馈给相应被叫终端;同时向主叫终端发送振铃消息; [0027] c media application server to modify each called terminal sent by the early media session description information, and media modified early media session description information fed back to the corresponding called terminal; simultaneously transmitting ringing to the calling terminal news;

[0028] d应用服务器得知一被叫终端摘机后通知其它被叫终端挂机,并将所述摘机的被叫终端的普通会话的媒体描述信息发送给主叫终端,主被叫进行通话。 [0028] d application server informed that the called terminal a hook another hook called terminal and the called terminal session media ordinary hook the description information to the calling terminal, the calling and called a call .

[0029] 进一步地,所述步骤b中各被叫终端收到应用服务器发来的呼叫请求后向其发送振铃消息,其中携带所述被叫终端的普通会话的媒体描述信息及早媒体会话的媒体描述信肩、ο [0029] Further, the step (b) send each of the called terminal receives the ringing message sent by the application server a call request, which carries the media common session description information of the called terminal early media session media described the letter shoulder, ο

[0030] 进一步地,所述步骤c中应用服务器修改被叫终端发来的早媒体会话的媒体描述信息是指:应用服务器将早媒体会话的媒体描述信息的媒体连接地址清零或删除媒体连接地址。 Media [0030] Further, the step (c) to modify the application server sent by the called terminal early media session description information is: the media application server early media session description information of the media connection address is cleared or deleted media connections address.

[0031] 进一步地,所述步骤d中应用服务器收到一被叫终端摘机的消息后通知其它被叫终端挂机,并向主叫终端发送应答消息,其中携带所述摘机的被叫的普通会话的媒体描述信息,主叫终端向应用服务器发送确认消息,此后主被叫进行通话。 [0031] Further, the step (d) notify the other application server receives a message of the called terminal after the called terminal goes off-hook on-hook and sends a response message to the calling terminal, wherein the carrying hook of the called Common media session description information, the calling terminal sends an acknowledgment message to the application server, thereafter called primary call.

[0032] 本发明还提供了一种用于一号多机同振业务的系统,包括一主叫终端、应用服务器及多个被叫终端,所述主叫终端用于发起呼叫请求,所述应用服务器用于将收到的主叫终端发来的呼叫请求转发给各被叫终端,其特征在于: [0032] The present invention also provides a system for a multi-tone service with the No. 1 crane, comprising a calling terminal, the called terminal and a plurality of application servers, the calling terminal initiates a call request for the the application server for forwarding the calling terminal receives the call request sent to each of the called terminal, wherein:

[0033] 所述应用服务器向各被叫终端转发呼叫时携带所述主叫终端的普通会话的媒体描述信息及支持早媒体会话的标志; [0033] The application server each medium carrying the calling terminal calls the called terminal forwarding the session description information and general signs support early media session;

[0034] 所述应用服务器还用于收到各被叫终端发来的普通会话的媒体描述信息及早媒体会话的媒体描述信息后修改所述早媒体会话的媒体描述信息,并将修改后的早媒体会话的媒体描述信息分别反馈给相应被叫终端;同时向主叫终端发送振铃消息;还用于得知一被叫终端摘机后将所述摘机的终端的普通会话的媒体描述信息发送给主叫终端,并通知其他被叫终端挂机;[0035] 所述各被叫终端收到应用服务器发来的呼叫请求后向其发送本终端的普通会话的媒体描述信息及早媒体会话的媒体描述信息。 Early after [0034] the application server is further configured to each of the called terminal sent by the media of ordinary conversations received early media session description information of the media changes the medium after early media session description information description information, and the modified media media session description information fed back to the corresponding called terminal; simultaneously transmits alerting message to the calling terminal; media session is also common for a terminal that the called terminal goes off-hook after the hook description information sent to the calling terminal and the called terminal notifies the other hook; [0035] the early media session media information of each called terminal after the application server receives the call request sent by the session description of its general media terminal transmitting this Description.

[0036] 进一步地,所述各被叫终端收到应用服务器发来的呼叫请求后向其发送振铃消息,其中携带所述被叫终端的普通会话的媒体描述信息及早媒体会话的媒体描述信息。 [0036] Further, each of the received called terminal to send a ringing message to the application server sends the call request, wherein the media session general description of the called terminal carries media information of the media session description information early .

[0037] 进一步地,所述应用服务器修改被叫终端发来的早媒体会话的媒体描述信息是指:应用服务器将早媒体会话的媒体描述信息的媒体连接地址清零或删除媒体连接地址。 [0037] Further, the application server modifies the called terminal sent by the media early media session description information is: the media application server early media session description information of the media connection address is cleared or remove the media connection address.

[0038] 进一步地,所述被叫终端还用于收到应用服务器反馈的经修改的早媒体会话的媒体描述信息后向其发送响应消息。 Media [0038] Furthermore, the called terminal is further configured to receive the feedback of the modified application server early media session description information to send the response message.

[0039] 进一步地,所述应用服务器收到所述摘机的消息后通知其它被叫终端挂机,并向主叫终端发送应答消息,其中携带所述摘机的被叫终端的普通会话的媒体描述信息。 [0039] Further, the application server receives a notification message to the other called terminal after the off-hook on-hook and sends a response message to the calling terminal, wherein the media carrying the hook of the called terminal common session Description.

[0040] 综上所述,本发明提供了一种用于一号多机同振业务的方法及系统,简化并规范了一号多机同振业务的实现,同时也有效地解决了现有业务中因为媒体切换而造成的媒体包丢失。 [0040] In summary, the present invention provides a method and system for a multi-tone service with the No. 1 crane, simplify and standardize the machine to achieve the same vibration One more services, but also effectively solves business because the media switching and packet loss caused by the media.

附图说明 BRIEF DESCRIPTION

[0041] 图1是现有技术中一号多机同振业务的信令流程图; [0041] FIG. 1 is a prior art signaling tone service with Call Appearance flowchart;

[0042] 图2是本发明用于一号多机同振业务的总体流程图; [0042] FIG 2 is a general flowchart Call Appearance with the present invention for vibration service;

[0043] 图3是本发明具体实施用于一号多机同振业务的信令流程图。 [0043] FIG 3 is a signaling flow chart of a Call Appearance tone service with a specific embodiment of the present invention.

具体实施方式 Detailed ways

[0044] 本发明引入早媒体会话处理模式,图2为本发明用于一号多机同振业务的总体流程图,应用服务器在呼叫多个被叫终端时,已经将主叫终端的会话的媒体描述信息用普通会话的媒体描述信息的方式带给各被叫终端,无需在被叫终端摘机之后发起媒体更新的操作以将主叫的媒体描述信息带给被叫终端,各被叫终端在收到呼叫请求后将本终端的普通会话媒体描述信息及早媒体会话媒体描述信息发送给应用服务器。 [0044] The present invention introduces early media session processing mode, FIG 2 is a general flowchart of the 1st tone service with multiple machine for the invention, a plurality of application servers in the call the called terminal, the calling terminal has the session media description information describes information for the media session ordinary manner to bring each of the called terminal, without initiating operation to update the media after the called terminal goes off-hook in order to bring the calling media description information of the called terminal, the called terminal each normal session media present at the terminal upon receipt of a call request early media session description information of the media description information to the application server.

[0045] 本实施例涉及一种用于一号多机同振业务的系统,包括一主叫终端、应用服务器及多个被叫终端;该系统适用于各被叫终端支持请求注解协议RFC3959的情况, [0045] The present embodiment relates to implement a Call Appearance same tone service system comprising a calling terminal, the called terminal and a plurality of application servers; which applies to each of the called UE supports the Request for Comments RFC3959 protocol Happening,

[0046] 所述主叫终端用于发起呼叫请求,其中携带主叫终端的普通会话媒体描述信息; [0046] for the calling terminal initiates a call request, the calling terminal carries media description information of ordinary conversations;

[0047] 所述应用服务器用于将收到的主叫终端发来的呼叫请求转发给各被叫终端,其中携带主叫终端的普通会话媒体描述信息及Supported :earlay-session (支持早媒体会话) 的标志;还用于收到各被叫终端发来的振铃消息后修改其中的早媒体会话的媒体描述信息,修改早媒体会话的媒体描述信息指:将早媒体会话的媒体描述信息的媒体连接地址清零或删除媒体连接地址,并将修改后的早媒体会话的媒体描述信息分别反馈给相应被叫终端;同时向主叫终端发送振铃消息;还用于收到一被叫终端摘机的消息后向主叫终端发送应答消息,携带该摘机的终端的普通会话的媒体描述信息,并通知其他被叫终端挂机; [0047] The application server is configured to forward the received calling terminal sent by the call request to each called terminal, the calling terminal carries the media description information and session ordinary Supported: earlay-session (session supports the early media ) flag; the called terminal is further configured to receive each message sent by the ringing modified media wherein the early media session description information, modifying the media early media session description information means: early media description information of the media session media connection address is cleared or deleted media connection address, media and the modified early media session description information fed back to the corresponding called terminal; simultaneously transmits alerting message to the calling terminal; further configured to receive a called terminal sends a response message to the calling terminal after picking up the message machine, ordinary media session of the portable terminal is off hook description information, and the called terminal notifies the other hook;

[0048] 所述被叫终端用于收到应用服务器发来的呼叫请求后向其发送振铃消息,携带本终端的普通会话媒体描述信息及早会话媒体描述信息;还用于收到应用服务器反馈的经修改的早会话的媒体描述信息后向其发送响应消息。 [0048] After the called terminal to the application server receives the call request sent by the sending of the ring thereto ordinary session media message carrying the description information of the terminal early session media description information; application server is further configured to receive feedback early media modified session description information to send the response message.

[0049] 本实施例还涉及一种用于一号多机同振业务的方法,其中各被叫终端均支持支持RFC3959协议,以一号双机为例进行描述,如图3所示,其具体处理流程如下: [0049] The present embodiment further relates to a method for the No. 1 crane with a multi-tone service, wherein each called terminal support supports the RFC3959 protocol, to one-described example, as shown in FIG. 3, specific process is as follows:

[0050] 步骤201 :主叫UE-a发起呼叫,AS接收到UE_a发来的INVITE,其中携带主叫SDP-a(即主叫a的媒体描述信息); [0050] Step 201: the calling UE-a initiates a call, AS received UE_a sent INVITE, which carries the calling SDP-a (i.e., a media description information of the calling party);

[0051]步骤 202 =AS 向UE-a 发送100TRYING ; [0051] Step 202 = AS 100TRYING to send UE-a;

[0052]步骤 203 =AS 向被叫UE_b 发送INVITE,其中携带SDP_a 及Supported : earlay-session的标志,即支持早媒体会话的标志; [0052] Step 203 = AS sends an INVITE to the called UE_B, and carrying SDP_a Supported: earlay-session flag, i.e. flag support early media session;

[0053] AS 向被叫UE-c 发送INVITE,其中携带SDP_a 及Supported :earlay_session 的标志; [0053] AS sends an INVITE to the called UE-c, and carrying SDP_a Supported: earlay_session flag;

[0054]步骤 204 =AS 收到UE_b 发来的100TRYING ; [0054] Step 204 = AS receives a 100 Trying UE_b sent;

[0055] AS 收到UE-c 发来的100TRYING ; [0055] AS received UE-c is sent by a 100 Trying;

[0056] 步骤205 :AS收到UE-b发来的180消息(振铃消息),其中携带普通会话SDP_b (即被叫b的媒体描述信息)和早媒体会话SDP_eb(即被叫b的早媒体会话媒体描述信息); AS 保存SDP-b ; [0056] Step 205: AS sent by UE-b receives the message 180 (Ringing message), which carries the session SDP_B normal (i.e., media description information of the called party b) and early media session SDP_eb (i.e. b earlier called media session media description information); save the AS SDP-b;

[0057] AS收到UE-c发来的180消息,其中携带普通会话SDP_c和早媒体会话SDP_ec (即被叫c的早媒体会话媒体描述信息);AS保存SDP-c ; [0057] AS received UE-c 180 sent by the message carrying the session SDP_c common and early media session SDP_ec (c, i.e. called early media session media description information); save the AS SDP-c;

[0058] 步骤206 =AS将SDP_eb的媒体连接地址改为0. 0.0.0(即清零)或删除媒体连接地址,形成SDP-eb,,向UE-b发送PRACK消息,其中携带SDP_eb,; [0058] Step 206 = AS SDP_eb the media connection address to 0. 0.0.0 (i.e., clear) or remove the media connection address, is formed SDP-eb ,, PRACK message sent to the UE-b, which carries SDP_eb ,;

[0059] AS将SDP-ec的媒体连接地址改为0. 0. 0.0(即清零)或删除媒体连接地址,形成SDP-ec,,向UE-c 发送PRACK 消息,携带SDP-ec,; [0059] AS the SDP-ec media connection address to 0. 0. 0.0 (i.e., clear) or remove the media connection address, is formed SDP-ec ,, PRACK message sent to the UE-c, carrying the SDP-ec ,;

[0060] 步骤207 =AS向主叫UE-a发送180消息,接收到UE_a发来的PRACK消息后向其发送2000K,完成可靠180的应答; 2000K send the [0060] Step 207 = AS 180 transmits a message to the calling UE-a, UE_a receiving the PRACK message sent, a response 180 to complete and reliable;

[0061 ] 步骤208 =AS收到UE-b对PRACK消息的2000K响应; [0061] Step 208 = AS received UE-b 2000K response to the PRACK message;

[0062] AS收到UE-c对PRACK消息的2000K响应; [0062] AS receives a response to the UE-c 2000K PRACK message;

[0063] 步骤207与步骤208的执行不分先后; [0063] Step 207 and step 208 is performed in no particular order;

[0064] 步骤209 =AS收到UE_c摘机的2000K响应; [0064] Step 209 = AS receives 2000K response UE_c-hook;

[0065] 步骤210〜213 =AS向UE_b发送CANCEL,并依次完成相关事件的应答;从而将UE-b挂机; [0065] Step 210~213 = AS sends UE_b CANCEL, and sequentially completion response related events; UE-b so as to hang up;

[0066] 步骤214 =AS向主叫UE_a发送2000K,其中携带SDP-c ; [0066] Step 214 = AS transmits to the calling 2000K UE_a, which carries the SDP-c;

[0067] 步骤215 :AS收到UE_a发来的ACK ; [0067] Step 215: AS receives the ACK sent by UE_a;

[0068] 此后,主被叫进入通话状态。 [0068] Thereafter, the calling and called into the call.

7 7

Claims (9)

1. 一种用于一号多机同振业务的方法,包括:a当应用服务器收到主叫终端发来的呼叫请求后将所述呼叫请求转发给各被叫终端, 所述呼叫请求中携带所述主叫终端的普通会话的媒体描述信息及支持早媒体会话的标志;b各被叫终端收到所述呼叫请求后向应用服务器发送本终端的普通会话的媒体描述信息及早媒体会话的媒体描述信息;c应用服务器修改各被叫终端发来的早媒体会话的媒体描述信息,并将修改后的早媒体会话的媒体描述信息分别反馈给相应被叫终端;同时向主叫终端发送振铃消息;d应用服务器得知一被叫终端摘机后通知其它被叫终端挂机,并将所述摘机的被叫终端的普通会话的媒体描述信息发送给主叫终端,主被叫进行通话。 1. A method for the No. 1 crane with a multi-tone service, comprising: a calling terminal when the application server receives the call request sent by the call request will be forwarded to each called terminal, the call request Common carries media session description information of the calling terminal and sign support early media session; b. each called terminal receives this transmission medium common terminal session to the application server after the call request early media session description information media description information; C for each media application server modifies the called terminal sent by the early media session description information of the media and the modified early media session description information fed back to the corresponding called terminal; simultaneously transmit vibration to the calling terminal bell message; D application server notifies the called terminal that a hook another hook called terminal and the called terminal session media ordinary hook description information to the calling terminal, the calling and called a call .
2.如权利要求1所述的方法,其特征在于,所述步骤b中各被叫终端收到应用服务器发来的呼叫请求后向其发送振铃消息,其中携带所述被叫终端的普通会话的媒体描述信息及早媒体会话的媒体描述信息。 Common 2. A method according to claim 1, wherein said step (b) send each of the called terminal receives the ringing message sent by the application server the call request that carries the called terminal media session description information early media session media description.
3.如权利要求1所述的方法,其特征在于,所述步骤c中应用服务器修改被叫终端发来的早媒体会话的媒体描述信息是指:应用服务器将早媒体会话的媒体描述信息的媒体连接地址清零或删除媒体连接地址。 3. The method according to claim 1, wherein said step (c) to modify the application server of the called terminal sent by the media early media session description information is: the media application server early media session description information media connection address is cleared or deleted media connection address.
4.如权利要求1所述的方法,其特征在于,所述步骤d中应用服务器收到一被叫终端摘机的消息后通知其它被叫终端挂机,并向主叫终端发送应答消息,其中携带所述摘机的被叫的普通会话的媒体描述信息,主叫终端向应用服务器发送确认消息,此后主被叫进行通话。 4. The method according to claim 1, wherein said step d further application server receives a notification of the called terminal after the called terminal a hook-hook message, and sends a response message to the calling terminal, wherein medium carrying the hook ordinary session description information of the called party, the calling terminal sends an acknowledgment message to the application server, thereafter called primary call.
5. 一种用于一号多机同振业务的系统,包括一主叫终端、应用服务器及多个被叫终端, 所述主叫终端用于发起呼叫请求,所述应用服务器用于将收到的主叫终端发来的呼叫请求转发给各被叫终端,其特征在于:所述应用服务器向各被叫终端转发呼叫请求时,所述呼叫请求中携带所述主叫终端的普通会话的媒体描述信息及支持早媒体会话的标志;所述应用服务器还用于收到各被叫终端发来的普通会话的媒体描述信息及早媒体会话的媒体描述信息后修改所述早媒体会话的媒体描述信息,并将修改后的早媒体会话的媒体描述信息分别反馈给相应被叫终端;同时向主叫终端发送振铃消息;还用于得知一被叫终端摘机后将所述摘机的终端的普通会话的媒体描述信息发送给主叫终端,并通知其他被叫终端挂机;所述各被叫终端收到应用服务器发来的呼叫请求后 A system with a multi-tone service for the No. 1 crane, comprising a calling terminal, the called terminal and a plurality of application servers, the calling terminal initiates a call request to the application server for receiving forwarded to the calling terminal to the call request sent by each of the called terminal, wherein: said application server to each of the called terminal forwarding ordinary session call request, the call request carries the calling terminal media description information and session flag support early media; the media application server is further configured to each called terminal sent by the ordinary session media information received early media session description media description modifying the early media session description information after information and media modified early media session description corresponding to the called terminal information fed back; simultaneously transmits alerting message to the calling terminal; also known for a called terminal after the hook of the hook after the application of each called terminal receives the call request sent by the server; normal media session description information of the terminal to the calling terminal and the called terminal notifies the other hook 向其发送本终端的普通会话的媒体描述信息及早媒体会话的媒体描述信息。 Common media session to which the terminal itself transmits early media session description information of the media description information.
6.如权利要求5所述的系统,其特征在于,所述各被叫终端收到应用服务器发来的呼叫请求后向其发送振铃消息,其中携带所述被叫终端的普通会话的媒体描述信息及早媒体会话的媒体描述信息。 6. The system of claim 5 wherein said common media session carries the called terminal, characterized in that each of the received called terminal to send a ringing message to the application server sends the call request, the media description information early media session description.
7.如权利要求5所述的系统,其特征在于,所述应用服务器修改被叫终端发来的早媒体会话的媒体描述信息是指:应用服务器将早媒体会话的媒体描述信息的媒体连接地址清零或删除媒体连接地址。 7. The system according to claim 5, wherein the application server modifies the called terminal sent by the media early media session description information is: the media application server early media session description information of the media connection address clear or delete a media connection address.
8.如权利要求5所述的系统,其特征在于,所述被叫终端还用于收到应用服务器反馈的经修改的早媒体会话的媒体描述信息后向其发送响应消息。 8. The system according to claim 5, characterized in that, further to the called terminal after receiving the media application server feeds a modified early media session description information to send a response message.
9.如权利要求5所述的系统,其特征在于,所述应用服务器收到一被叫终端摘机的消息后通知其它被叫终端挂机,并向主叫终端发送应答消息,其中携带所述摘机的被叫终端的普通会话的媒体描述信息。 9. The system according to claim 5, wherein said application server receives a notification other called terminal after the called terminal a hook-hook message, and sends a response message to the calling terminal, wherein the carrying Common media session called terminal hook description.
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