CN1421083A - 互联网协议电话话音/视频消息存放和检索 - Google Patents

互联网协议电话话音/视频消息存放和检索 Download PDF

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CN1421083A
CN1421083A CN00818237A CN00818237A CN1421083A CN 1421083 A CN1421083 A CN 1421083A CN 00818237 A CN00818237 A CN 00818237A CN 00818237 A CN00818237 A CN 00818237A CN 1421083 A CN1421083 A CN 1421083A
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message
sip
ims
calling
retrieval
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S·R·多诺万
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Verizon Business Global LLC
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MCI Worldcom Inc
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/10—Architectures or entities
    • H04L65/102—Gateways
    • H04L65/1023—Media gateways
    • H04L65/103—Media gateways in the network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L51/00—User-to-user messaging in packet-switching networks, transmitted according to store-and-forward or real-time protocols, e.g. e-mail
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L51/00—User-to-user messaging in packet-switching networks, transmitted according to store-and-forward or real-time protocols, e.g. e-mail
    • H04L51/07—User-to-user messaging in packet-switching networks, transmitted according to store-and-forward or real-time protocols, e.g. e-mail characterised by the inclusion of specific contents
    • H04L51/10—Multimedia information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L51/00—User-to-user messaging in packet-switching networks, transmitted according to store-and-forward or real-time protocols, e.g. e-mail
    • H04L51/56—Unified messaging, e.g. interactions between e-mail, instant messaging or converged IP messaging [CPM]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/10—Architectures or entities
    • H04L65/102—Gateways
    • H04L65/1033—Signalling gateways
    • H04L65/104—Signalling gateways in the network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066—Session management
    • H04L65/1096—Supplementary features, e.g. call forwarding or call holding
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066—Session management
    • H04L65/1101—Session protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066—Session management
    • H04L65/1101—Session protocols
    • H04L65/1104—Session initiation protocol [SIP]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/40—Network security protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers
    • H04M3/50—Centralised arrangements for answering calls; Centralised arrangements for recording messages for absent or busy subscribers ; Centralised arrangements for recording messages
    • H04M3/53—Centralised arrangements for recording incoming messages, i.e. mailbox systems
    • H04M3/5307—Centralised arrangements for recording incoming messages, i.e. mailbox systems for recording messages comprising any combination of audio and non-audio components
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers
    • H04M3/50—Centralised arrangements for answering calls; Centralised arrangements for recording messages for absent or busy subscribers ; Centralised arrangements for recording messages
    • H04M3/53—Centralised arrangements for recording incoming messages, i.e. mailbox systems
    • H04M3/533—Voice mail systems
    • H04M3/53308—Message originator indirectly connected to the message centre, e.g. after detection of busy or absent state of a called party
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M7/00—Arrangements for interconnection between switching centres
    • H04M7/006—Networks other than PSTN/ISDN providing telephone service, e.g. Voice over Internet Protocol (VoIP), including next generation networks with a packet-switched transport layer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S370/00—Multiplex communications
    • Y10S370/912—Packet communications
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S379/00—Telephonic communications
    • Y10S379/90—Internet, e.g. Internet phone, webphone, internet-based telephony

Abstract

一种用于为基于互联网协议(IP)的网络上的综合消息传送系统(IMS)发信号以存放一个消息的方法，包括步骤：发送一个指示消息存放动作的会话启动协议(SIP)INVITE请求到IMS；从IMS接收一个同意参加消息存放动作的相应的SIP消息；以及发送一个确认接收到相应的SIP消息的SIP确认消息到IMS；以及将消息存放在目的信箱中。一种为基于互联网协议(IP)的网络上的综合消息传送系统(IMS)发信号以检索被存放的消息的方法，包括步骤：发送一个指示消息检索动作的会话启动协议(SIP)INVITE请求到IMS；从IMS接收一个同意参加消息检索动作的相应的SIP消息；以及发送一个确认接收到相应的SIP消息的SIP确认消息到IMS；以及从对应于已知帐户信息的信箱中检索被存放的消息。

Description

互联网协议电话话音/视频消息存放和检索
技术领域
本发明涉及互联网协议电话，更具体而言涉及用于处理涉及在基于互联网协议的网络中存储和转发话音和视频消息的信令的方法。
背景技术
互联网(IP)电话是在通过使用互联网协议的网络的两方或者多方之间的话音和其它多媒体数据的实时分发。互联网电话随着PC到PC互联网电话而出现于20世纪90年代中期，其需要双方都有配备有专用硬件和软件的个人计算机，以允许话音信号在互联网上传输。最近，建议一种使用与诸如互联网的IP网络集成的现有公共交换电话网(PSTN)结构的IP电话系统。
互联网技术基于会话，而不是基于连接的。诸如会话启动协议(SIP)的互联网协议通常用于建立会话并且协商用于会话的能力。一旦会话建立，实际的媒体就被使用诸如实时传输协议(RTP)的不同协议传送通过IP网络。IP电话自其引入以来得到了快速进步。
IP电话有优越于PSTN的优点，为用户和承载者节约了费用，同时允许传送多种媒体类型，如话音和视频，这与PSTN中只是传送话音不同。尽管IP电话某一天可能会取代PSTN，但是它也有一些缺点，因为它目前缺乏已经为PSTN开发的特征。一个这样的特征是呼叫消息存放和检索。
SIP协议是目前用于建立IP电话会话的最主要的协议。不过，目前在SIP协议中还没有处理用于与消息传送系统正确接口以存放和检索消息的呼叫转移逻辑和信令需求的定义。当被叫方忙或者没有应答呼叫时，通常进行有条件的呼叫转移，以存放在消息传送系统中。被叫方还希望主叫方无条件地将消息存放在消息传送系统中。在任何情况中，消息传送系统接口必须提供信令能力来存储消息，无论是有条件地还是无条件地，并且还用于被叫方后来检索所存储的消息。信令能力必须还包括关于存放消息的主叫方的信息。当被叫方检索所存放的消息时，必须验证该被叫方的身份。
因此，需要一种方法，用于处理在基于IP的网络中使用SIP协议的IP电话话音和视频消息存放和检索所需要的信令，从而允许IP网络与综合消息传送系统(IMS)的集成。
发明内容
本发明的一个目的是提供一种在基于互联网协议的网络中处理SIP信令需求的方法，该需求与将呼叫路由到IMS相关，以允许主叫方有条件地将一个消息存放在被叫方的消息信箱中。
本发明的另一个目的是提供一种在基于互联网协议的网络中处理SIP信令需求的方法，该需求与将呼叫路由到IMS相关，以允许主叫方无条件地将一个消息存放在被叫方的消息信箱中。
本发明的再一个目的是提供一种在基于互联网协议的网络中处理SIP信令需求的方法，该需求与将呼叫路由到IMS相关，以允许主叫方检索被叫方消息传送信箱中存放的消息。
本发明的另一个目的是提供一种在基于互联网协议的网络中处理SIP信令需求的方法，该需求与通知被叫方一个新的消息已经被存放在被叫方的消息信箱中相关。
为了达到上述目的，根据本发明的一个方法被提供用于给基于IP的网络中的一个IMS发信号以存放一个消息，该方法包括步骤：将一个指示消息存放动作的SIP INVITE请求发送到IMS；从IMS接收一个相应的同意参与消息存放动作的SIP消息；并且将确认接收到相应的SIP消息的SIP确认消息发送到IMS；并且将消息存放在目的信箱中。
还提供了一种方法，用于给基于IP的网络中的一个IMS发信号以检索一个被存放的消息，该方法包括步骤：发送一个指示消息检索动作的SIP INVITE请求到IMS；从IMS接收一个同意参与消息检索动作的相应的SIP消息；发送一个确认接收到相应的SIP消息的SIP确认消息到IMS；以及从信箱中检索对应于已知帐户信息的被存放的消息。
附图说明
根据连同附图对于本发明示范实施例的详细描述可以显而易见本发明的上述以及其它目的、特征和优点，其中：
图1是说明支持本发明方法的系统的框图；以及
图2是说明根据本发明的一个实施例存放消息的方法的流程图；
图3是说明根据本发明的一个实施例检索消息的方法的流程图。
具体实施方式
现在讨论附图，其中相同的参考编号表示各图中相同或相似的元件，图1是说明提供使用传统电话13和互联网电话15的用户之间的电话业务的系统的框图。用于通话的信令和媒体被在互联网17上传送。
传统电话13通过诸如PBX和IP电话网关21的传统电话交换设备连接到互联网17。IP电话网关21中的每一个包括一个信令网关(未示出)和一个媒体网关(未示出)。信令网关提供PSTN电话信令和诸如SIP的IP电话信令消息之间的双向传输。IP电话15可以通过局域网或者由一个调制解调器连接通过互联网业务提供者直接连接到互联网。
通常，呼叫信令和媒体在始发IP电话网关21a和目的IP电话网关21b之间通过互联网17传送。典型地，路由信息由诸如网络服务器(NS)23的代理服务器支持。NS23还提供呼叫控制和呼叫转移控制。也就是，NS23包括一个用作服务器和客户的中间应用程序，用于代表其它客户或者下文通称为的主叫方来进行请求。在SIP协议中，INVITE请求被从始发IP电话网关21a发送到NS 23处的被叫方的地址。如本领域公知的，IP呼叫建立信令消息被在IP电话网关21和NS23之间来回传送，直到使用SIP协议建立呼叫为止。
所述系统还包括一个位置管理者31，其为NS 23提供网关选择和移动性管理服务。位置管理者31用作SIP改发服务器。改发服务器是接受SIP请求、将地址映射为零个或者多个新地址并将这些地址返回给发送方(例如NS 23)的服务器。与诸如NS 23的SIP代理服务器不同，改发服务器不启动其本身的SIP请求或接受呼叫。这样，如果NS23不能发送一个会话启动请求到IP电话网关21，则NS 23发送一个会话启动请求到位置管理者31处的被叫方。位置管理者31或者查询其本身的数据库或者访问传统业务控制实体29，以获得被叫方的新地址。然后，位置管理者31将新地址返回给NS 23。
在无法到达被叫方，即电话忙或者未应答的情况下，呼叫被转移到综合消息传送系统(IMS)25。为了正确转移、存放和检索IMS 25中的消息，NS 23必须使用SIP协议与IMS 25通信。目前，还没有用于使用SIP协议来处理条件呼叫转移逻辑和与信令消息传送系统正确接口的所需信令需求的定义。本发明确定了用于与IMS 25接口的SIP信令需求。
NS 23发送一个或多个SIP请求到IMS 25并且从IMS 25接收一个或多个请求。一个请求(及其发送)与该请求所触发的响应一起组成一个SIP事务。对于一个请求的所有响应含有Call-ID、CSeq、To和From中的相同值，如下面的例子所示。这允许响应与请求匹配。由这些参数所提供的功能是本领域公知的。
一个成功的SIP邀请包括两个请求，INVITE之后是ACK请求。INVITE之后的ACK请求不是事务的一部分，这是因为它可能通过一组不同的主机。INVITE请求要求被叫方参加一个特定的会议或者建立一个双方对话。在被叫方通过以例如200 OK消息响应来同意参加通话之后，主叫通过发送一个ACK请求来确认它已经接收到该响应。如果主叫不再希望参加通话，则它发送一个BYE请求来代替ACK。INVITE请求通常包含一个为被叫方提供参加会话的足够信息的会话描述。该会话描述列举了主机希望使用的媒体类型和格式以及它希望媒体数据被发送的地点。如果被叫方希望接受通话，则它通过返回一个列出它希望使用的媒体的类似描述而对邀请做出响应。
本发明的SIP INVITE请求包括一个由NS 23添加的额外的头。所添加的头使用SIP Require头协议扩展机制。所述Require头被用于告知IMS 25关于必须被支持的选项。建议用于该头的格式包括一个合适的标记，如：
Requierd：org.ietf.messaging
以及下列参数：
messaging-param＝“action”(“deposit”|“retrieval”)
deposit-type＝“dtype＝”(“cfu”|“cfb”|“cfna”)
其中，action参数标识是否在执行存放或检索操作，而dtype参数确定呼叫转移条件。只对于存放动作所需要的dtype参数包括值：对于无条件呼叫转移的cfu；对于忙呼叫转移的cfb；以及对于无应答呼叫转移的cfna。
NS23为由NS23转发到IMS 25的SIP INVITE请求添加Require头和相关参数。NS 23必须首先确定作为IMS帐户用户的被叫方是否选择令所有呼叫都无条件地转发到其在IMS 25中的消息信箱中。当被叫方激活被叫方电话或其它通信设备上的无条件呼叫转移特征时，该信息由NS 23经由一个由被叫方到NS 23的呼叫而从被叫方获得。响应于在初始呼叫建立过程中从NS 23到被叫方的INVITE请求，NS 23确定被叫方是否作为接收到诸如“486这里忙”的一个忙响应的结果而忙。响应于在初始呼叫建立过程中从NS 23到被叫方的INVITE请求，NS 23确定被叫方是否作为接收到一个请求超时的结果而未应答。
用于在使用SIP协议的主叫方和被叫方之间的一般IP呼叫建立的呼叫流是本领域众所周知的，因此这里不再详述，以免不必要地影响本发明。本发明的重点集中在NS 23和IMS 25之间所需要的通信的方法，更具体的是Require头及其相关参数的添加。
参见图2，如步骤200所示，将一个消息存放到IMS 25中的方法开始于呼叫建立以及上述的路由到被叫方。在步骤205，NS 23确定被叫方是否先前被激活无条件呼叫转移特征。如果无条件呼叫转移特征已经被被叫方激活，则在步骤206，NS 23发送一个SIP INVITE请求到IMS 25，该请求包括具有参数action＝deposit和dtype＝cfu的额外Require头，其指示一个无条件呼叫转移消息存放。不过，如果无条件呼叫转移特征还没有被被叫方激活，则在步骤210，NS 23确定是否响应于在初始呼叫建立过程中从NS 23到被叫方的INVITE请求而接收到诸如486这里忙的忙响应。如果接收到一个忙响应，则在步骤211，NS 23发送一个SIP INVITE请求到IMS 25，该请求包括具有参数action＝deposit和dtype＝cfb的额外Require头，其指示一个条件忙呼叫转移消息存放。不过，如果忙响应未被NS 23接收到，则在步骤215，NS 23确定被叫方是否没有应答，或更具体地，判定是否响应于在初始呼叫建立过程中从NS 23到被叫方的INVITE请求而由NS 23接收到一个请求超时。如果一个请求超时被接收到，则在步骤216，NS 23发送SIP INVITE请求到IMS 25，该请求包括具有参数action＝deposit和dtype＝cfna的额外Require头，其指示一个条件无应答呼叫转移消息存放。不过，如果请求超时没有被NS23接收到，则NS 23在步骤245确定NS 23是否接收到一个连接信号，并且在步骤250完成到被叫方的呼叫建立。
在步骤206、211或216，从NS23发送到IMS 25的包括额外SIPRequire头的典型的SIP INVITE请求呼叫流示出如下：INVITE sip：IMS-mailbox-id@ims.wcom.com SIP/2.0VIA：SIP/2.0/UDP calling-host.comVIA：SIP/2.0/UDP ns.wcom.comRecord-Route：<sip：ns.wcom.com>From：Calling User<sip：calling-user@calling-host.com>To：Called User<sip：called-user@sip.wcom.com>Callid：123456@calling-host.comCSeq：1 INVITEContact：<sip：calling-user@calling-host.com>Required：org.ietf.messagingaction＝depositdtype＝cfbContent-Type：application/sdpContent-Length：…v＝0o＝UserA 2890844526 2890844526 IN IP4 client.here.comt＝0 0t＝0 0c＝IN IP4 100.101.102.103m＝audio 49170 RTP/AVP 0a＝rtpmap：0 PCMU/8000
在上述例子中，所选择的dtype参数含有值cfb，其指示条件忙呼叫转移存放操作，如步骤210所示。该参数对于步骤205和245的SIPINVITE请求是不同的，其分别是cfu和cfna。
在任何情况下，在步骤225，IMS 25通过发送一个200 OK消息到NS 23来响应SIP INVITE请求，其指示所述请求成功并且IMS 25同意参加与NS 23的通话。一个典型的响应如下所示：SIP/2.0 200 OKVLA：SIP/2.0/UDP calling-host.comVIA：SIP/2.0/UDP ns.wcom.comRecord-Route：<sip：ns.wcom.com>From：Calling User<sip：calling-uscr@calling-host.com>To：Called User<sip：called-uscr@sip.wcom.com>Callid：123456@calling-host.comCSeq：1 INVITEContact：<sip：IMS-mailbax-id@ims.wcom.host.com>Content-Type：application/sdpContent-Length：…v＝0o＝UserB 2890844527 2890844527 IN IP4 client.there.comt＝0 0t＝0 0c＝IN IP4 110.111.112.113m＝audio 3456 RTP/AVP 0a＝rtpmap：0 PCMU/8000
然后，NS23在步骤230通过发送一个ACK消息到IMS 25来确认它已经接收到对于SIP INVITE请求的一个最终响应，典型地如下所示：ACK sip：IMS-mailbox-id@ims.wcom.com SIP/2.0VIA：SIP/2.0/UDP calling-host.comVIA：SIP/2.0/UDP ns.wcom.comRoute：<sip：calling-user@calling-host.com>From：Calling User<sip：calling-user@calling-host.com>To：Called User<sip：called-user@sip.wcom.com>Callid：123456@calling-host.comCSeq：1 ACKContent-Length：0
然后，在步骤235，作为视频或话音内容的消息被IMS 25存放到被叫方的信箱地址中，被叫方是IMS帐户用户。然后，在步骤240经由标准的SIP BYE处理来终止通信。
根据本发明检索一个被存放消息的方法如图3所示。参见图3，在步骤300，经由一个由IMS 25发起的激活用户电话上的消息提示特性的呼叫而通知一个IMS帐户用户一个消息已经被存放在用户的信箱中。在步骤300，用户的随后检索被存放消息的呼叫被NS 23建立并路由到IMS 25。SIP INVITE请求的内容根据如在步骤305和340中所确定的三种可能的情况而变化。不过，在任何情况下，SIP INVITE请求都包括只具有action＝retrieval参数的额外Require头。
在步骤305，如果IMS帐户用户的帐户信息已经被NS 23验证，则NS 23与IMS 25之间的呼叫流将例如如下，从其中NS 23发送SIPINVITE请求的步骤310开始。INVITE sip：IMS-account-id@ims.wcom.com SIP/2.0VIA：SIP/2.0/UDP calling-host.comVIA：SIP/2.0/UDP ns.wcom.comRecord-Route：<sip：ns.wcom.com>From：Calling User<sip：calling-user@calling-host.com>To：voicemail<sip：voicemail@sip.wcom.com>Callid：123456@calling-host.comCScq：1 INVITEContact：<sip：calling-user@calling-host.com>Required：org.ietf.messagingaction＝retrievalContent-Type：application/sdpContent-Length：…v＝0o＝UserA 2890844526 2890844526 IN IP4 client.here.comt＝0 0t＝0 0c＝IN IP4 100.101.102.103m＝audio 49170 RTP/AVP 0a＝rtpmap：0 PCMU/8000
在步骤315，IMS 25通过发送一个200 OK消息到NS 23来响应SIP INVITE请求，该消息指示请求是成功的并且IMS 25已经同意参加与NS23的通话。一个典型的响应如下所示：SIP/2.0 200 OKVIA：SIP/2.0/UDP calling-host.comVIA：SIP/2.0/UDP ns.wcom.comRecord-Route：<sip：ns.wcom.com>From：Calling User<sip：calling-user@calling-bost.com>To：voicemail<sip：voicemail@sip.wcom.com>Callid：123456@calling-host.comCSeq：1 INVITEContact：<sip：IMS-mailbox-id@ims.wcom.host.com>Content-Type：application/sdpContent-Length：…v＝0o＝UserB 2890844527 2890844527 IN IP4 client.there.comt＝0 0t＝0 0c＝IN IP4 110.111.112.113m＝audio 3456 RTP/AVP 0a＝rtpmap：0 PCMU/8000
然后，在步骤320，NS 23通过发送一个ACK消息到IMS 25来确认它已经接收到对于SIP INVITE请求的最终响应，典型地如下所示：ACK sip：IMS-mailbox-id@ims.wcom.corn SIP/2.0VIA：SIP/2.0/UDP calling-host.comVIA：SIP/2.0/UDP ns.wcom.comRoute：<sip：calling-user@ca1ling-host.com>From：Calling User<sip：calling-user@caliing-host.com>To：voicemail<sip.voicemail@sip.wcom.com>Callid：123456@calling-host.comCSeq：1 ACKContent-Length：0
在上述情况中，不需要提示，这是因为IMS帐户用户信息被验证并且在步骤325中，IMS 25使用在INVITE请求统一资源定位符(URL)中所指示的帐户信息。之后，在步骤410，主叫用户被授权访问信箱，并且在步骤415检索消息，之后是步骤420中的标准SIP BYE处理以结束通话。
另一方面，在步骤305如果IMS帐户用户不能被验证，并且在步骤340，用户正在从具有与其相关的一个缺省IMS帐户的设备访问IMS25，则过程改为继续到步骤345，提供从NS 23到IMS 25的例如如下所示的SIP INVITE请求：INVITE sip：IMS-accound-id：？？？？@ims.wcom.com SIP/2.0VIA：SIP/2.0/UDP calling-host.comVIA：SIP/2.0/UDP ns.wcom.comRecord-Route：<sip：ns.wcom.com>From：Calling User<sip：calling-user@calling-host.com>To：voicemail<sip：voicemai1@sip.wcom.com>Callid：123456@calling-host.comCSeq：1 INVITEContact：<sip：calling-user@calling-host.com>Required：org.ietf.messagingaction＝retrievalContent-Type：application/sdpContent-Length：…v＝0o＝UserA 2890844526 2890844526 IN IP4 client.here.comt＝0 0t＝0 0c＝IN IP4 100.101.102.103m＝audio 49170 RTP/AVP 0a＝rtpmap：0 PCMU/8000
在步骤350，IMS 25通过发送一个200 OK消息到NS23来响应SIP INVITE请求，该消息指示所述请求是成功的并且IMS 25已经同意参加与NS 23的通话。一个典型的响应如下所示：SIP/2.0 200 OKVIA：SIP/2.0/UDP calling-host.comVIA：SIP/2.0/UDP ns.wcom.comRecord-Route：<sip：ns.wcom.com>From：Calling User<sip：calling-user@calling-host.com>To：voicemail<sip：voicemail@sip.wcom.com>Callid：123456@calling-host.comCSeq：1 INVITEContact：<sip：IMS-mailbox-id@ims.wcom.host.com>Content-Type：application/sdpContent-Length：…v＝0o＝UserB 2890844527 2890844527 IN IP4 client.there.comt＝0 0t＝0 0c＝IN IP4 110.111.112.113m＝audio 3456 RTP/AVP 0a＝rtpmap：0 PCMU/8000
然后，在步骤355，NS23通过发送一个ACK消息到IMS 25来确认它已经接收到对于SIP INVITE请求的一个最终响应，通常如下所示：ACK sip：IMS-mailbox-id@ims.wcom.com SIP/2.0VIA：SIP/2.0/UDP calling-host.comVIA：SIP/2.0/UDP ns.wcom.comRoute：<sip：calling-user@calling-host.com>From：Calling User<sip：calling-user@calling-host.com>To：voicemail<sip：voicemail@sip.wcom.com>Callid：123456@calling-host.comCSeq：1 ACKContent-Length：0
上述SIP INVITE请求含有帐户信息，而没有口令验证。在该点，在步骤360中，IMS 25提示主叫IMS帐户用户一个口令来验证INVITE请求URL中所包含的帐户。如果帐户被验证，则该过程如上所述继续到步骤410-420。不过，如果所输入的口令不正确，或者用户指示其正在从一个具有分配给它的对应于另一个用户的帐户的缺省帐户的设备呼叫，则如下所述在步骤395，IMS 25提示用户一个用户名和口令并且继续到步骤400。
不过，如果在步骤340，IMS帐户用户没有从不具有分配给它的一个缺省IMS帐户的网关或者其它设备访问IMS 25，则如下所示，在步骤380，NS23发送一个帐户未知SIP INVITE请求到IMS 25：INVITE sip：UNKNOWN@ims.wcom.com SIP/2.0VIA：SIP/2.0/UDP calling-host.comVLA：SIP/2.0/UDP ns.wcom.comRecord-Route：<sip：ns.wcom.com>From：Calling User<sip：calling-user@calling-host.com>To：voicemail<sip：voicemail@sip.wcom.com>Callid：123456@calling-host.comCSeq：1 INVITEContact：<sip：calling-user@calling-host.com>Required：org.ietf.messagingaction＝retrievalContent-Type：application/sdpContent-Length：...v＝0o＝UserA 2890844526 2890844526 IN TP4 client.here.comt＝0 0t＝0 0c＝IN IP4 100.101.102.103m＝audio 49170 RTP/AVP 0a＝rtpmap：0 PCMU/8000
在步骤385，通过发送一个200 OK消息到NS 23而对SIP INVITE请求做出响应，该消息指示所述请求是成功的并且IMS 25已经同意参加与NS 23的通话。一个典型的响应如下所示：SIP/2.0 200 OKVIA：SIP/2.0/UDP calling-host.comVIA：SIP/2.0/UDP ns.wcom.comRecord-Route：<sip：ns.wcom.com>From：Calling User<sip：calling-user@calling.host.com>To：voicemail<sip：voicemail@sip.wcom.com>Callid：123456@caliing-host.comCSeq：1 INVITEContact：<sip：IMS-mailbox-id@ims.wcom.host.com>Content-Type：application/sdpContent-Length：…v＝0o＝UserB 2890844527 2890844527 IN IP4 client.there.comt＝0 0t＝0 0c＝IN IP4 110.111.112.113m＝audio 3456 RTP/AVP 0a＝rtpmap：0 PCMU/8000
然后，在步骤390，通过发送一个ACK消息到IMS 25，NS 23确认它已经接收到一个对于SIP INVITE的最终响应，其典型地如下所示：ACK sip：IMS-mailbox-id@ims.wcom.com SIP/2.0VIA：SIP/2.0/UDP calling-host.comVIA：SIP/2.0/UDP ns.wcom.comRoute：<sip：calling-user@calling-host.com>From：Calling User<sip：calling-user@calling-host.com>To：voicemail<sip：voicemail@sip.wcom.com>Callid：123456@calling-host.comCSeq：1 ACKContent-Length：0
在这种情况下，SIP INVITE请求不含有帐户或者验证信息，而只含有在INVITE请求URL中的标识符UNKNOWN。因此，在步骤395中，主叫方被提示用户名和口令。如果在步骤400，帐户被验证，则过程如上所述继续到步骤410-420。不过，如果用户名和口令被错误输入，则在操作被终止之前，在步骤405，用户被允许预定数量的重新登记尝试，在步骤406结束通话。
尽管上面参考优选实施例描述了本发明，但是它们只是示范应用。因此，在不偏离所附权利要求定义的本发明精神和范围的条件下，对于本领域的普通技术人员可以理解许多变化。

Claims (20)

1.一种为基于互联网协议(IP)的网络上的综合消息传送系统(IMS)发信号以存放一个消息的方法，包括步骤：
发送一个指示消息存放动作的会话启动协议(SIP)INVITE请求到IMS；
从IMS接收一个同意参加消息存放动作的相应的SIP消息；以及
发送一个确认接收到相应的SIP消息的SIP确认消息到IMS。
2.如权利要求1所述的方法，还包括将消息存放在目的信箱中的步骤。
3.如权利要求2所述的方法，其中所存放的消息包括话音数据。
4.如权利要求2所述的方法，其中所存放的消息包括视频数据。
5.如权利要求1所述的方法，其中SIP INVITE请求包括跟随着SIP Require头协议扩展机制的Require头。
6.如权利要求5所述的方法，其中Require头包括至少一个第一和第二参数，其中第一参数指示对IMS的消息存放动作并且第二参数是一个呼叫转移参数。
7.如权利要求6所述的方法，其中呼叫转移参数根据被叫方的忙信号条件或者被叫方的无应答条件来识别消息是无条件还是有条件地被存放。
8.一种为基于互联网协议(IP)的网络上的综合消息传送系统(IMS)发信号以检索被存放的消息的方法，包括步骤：
发送一个指示消息检索动作的会话启动协议(SIP)INVITE请求到IMS；
从IMS接收一个同意参加消息检索动作的相应的SIP消息；以及
发送一个确认接收到相应的SIP消息的SIP确认消息到IMS。
9.如权利要求8所述的方法，其中IMS发送消息到安全网络服务器(NS)并从该服务器接收消息。
10.如权利要求8所述的方法，还包括从对应于已知帐户信息的信箱中检索被存放的消息的步骤。
11.如权利要求10所述的方法，其中已知帐户信息包括已经被验证的帐户标识。
12.如权利要求10所述的方法，其中已知帐户信息包括未被验证的帐户标识，并且其中所述方法还包括提示用户一个口令的步骤。
13.如权利要求10所述的方法，其中已知的帐户信息不包括帐户标识，并且其中所述方法还包括提示用户一个用户名和口令的步骤。
14.如权利要求12所述的方法，还包括步骤：当为所提示的口令输入一个不正确的口令时，询问用户一个用户名和一个新口令。
15.如权利要求10所述的方法，其中被检索的消息包括话音数据。
16.如权利要求10所述的方法，其中被检索的消息包括视频。
17.如权利要求8所述的方法，其中SIP INVITE请求包括跟随着SIP Require头协议扩展机制的一个Require头。
18.如权利要求17所述的方法，其中Require头包括至少一个第一参数，其中第一参数指示对IMS的消息检索动作。
19.如权利要求8所述的方法，其中当被存放的消息准备好用于检索时，通知IMS帐户用户。
20.一种为基于互联网协议(IP)的网络上的综合消息传送系统(IMS)发信号以存放一个消息并且检索被存放的消息的方法，包括步骤：
发送一个指示消息存放动作的会话启动协议(SIP)INVITE请求到IMS；
从IMS接收一个同意参加消息存放动作的相应的SIP消息；
发送一个确认接收到相应的SIP消息的SIP确认消息到IMS；
将消息存放在一个目的信箱中；
发送一个指示消息检索动作的会话启动协议(SIP)INVITE请求到IMS；
从IMS接收一个同意参加消息检索动作的相应SIP消息；
发送一个确认接收到相应的SIP消息的SIP确认消息到IMS；以及
从目的信箱检索被存放的消息，其中目的信箱对应于已知帐户信息。
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US8923276B2 (en) 2014-12-30
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US7773585B2 (en) 2010-08-10
US6434143B1 (en) 2002-08-13
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US20070121591A1 (en) 2007-05-31
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US20090238177A1 (en) 2009-09-24
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US20090219925A1 (en) 2009-09-03
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US7167468B2 (en) 2007-01-23
WO2001039441A1 (en) 2001-05-31
AU773805B2 (en) 2004-06-10
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