WO2011050620A1 - 一种实现ip化语音信箱外呼的系统及方法 - Google Patents

一种实现ip化语音信箱外呼的系统及方法 Download PDF

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Publication number
WO2011050620A1
WO2011050620A1 PCT/CN2010/074460 CN2010074460W WO2011050620A1 WO 2011050620 A1 WO2011050620 A1 WO 2011050620A1 CN 2010074460 W CN2010074460 W CN 2010074460W WO 2011050620 A1 WO2011050620 A1 WO 2011050620A1
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Prior art keywords
media
server
user
called user
voice
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PCT/CN2010/074460
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English (en)
French (fr)
Inventor
葛昊
卢涛
陈杰
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中兴通讯股份有限公司
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Publication of WO2011050620A1 publication Critical patent/WO2011050620A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M7/00Arrangements for interconnection 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
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M3/00Automatic or semi-automatic exchanges
    • H04M3/42Systems providing special services or facilities to subscribers
    • H04M3/50Centralised arrangements for answering calls; Centralised arrangements for recording messages for absent or busy subscribers ; Centralised arrangements for recording messages
    • H04M3/53Centralised arrangements for recording incoming messages, i.e. mailbox systems
    • H04M3/533Voice mail systems
    • H04M3/53333Message receiving aspects
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/16Communication-related supplementary services, e.g. call-transfer or call-hold

Definitions

  • the present invention relates to the field of telecom value-added services, and in particular, to a system and method for implementing an Internet Protocol (IP) voice call outbound call.
  • IP Internet Protocol
  • BICC Bearer Independent Call Control
  • the Bearer Independent Call Control (BICC) protocol is a bearer-independent call control protocol developed by the International Telecommunications Union-Technical Specification Group (ITU-TSG) 11 group.
  • the main feature of the BICC protocol is that the Call Service Function (CSF) and the Bearer Control Function (BCF) are separated, so that call control signaling can be uploaded on various networks, including the Message Transport Protocol. MTP), Signaling System 7, SS7 network, Asynchronous Transfer Mode (ATM) network, IP network.
  • MTP Call Service Function
  • MTP Signaling System 7
  • ATM Asynchronous Transfer Mode
  • IP network IP network.
  • the BICC protocol evolved from the Integr anted Services Digital Network (ISDN) User Part (ISUP) protocol and is an important supporting tool for the evolution of traditional telecommunication networks to integrated
  • the call service function of BICC defines the following four types: Call Service Node Function (CSF-N), which mainly includes interface with the narrowband service and peer peer in the Interface Serving Node (ISN). Call Service Function (CSF); Call Service Transfer Function (CSF-T), which mainly includes the Transit Serving Node (TSN) to establish and maintain the bone network call.
  • CSF-N Call Service Node Function
  • ISN Interface Serving Node
  • CSF-T Call Service Transfer Function
  • TSN Transit Serving Node
  • BCF-T 7-bearer control transfer function
  • CSF-G Call Control Gateway Function
  • BCF-G Call Control Gateway Function
  • BCF-G Call Control Gateway Function
  • BCF-G Call Control Gateway Function
  • All Control Coordination Function CSF-C
  • BCF-J Bearer Control Joint Function
  • BCF-J Bearer Control Joint Function
  • Bearer Control Node Function (BCF-N) which provides control and communication capabilities for its associated call service functions, and establishes and releases to peer-to-peer (BCF-N) Bonelinks Required signaling capability
  • Bearer Control Relay Function BCF-R
  • BCF-R Bearer Control Relay Function
  • An object of the present invention is to provide a system for implementing an IP-based voicemail out-of-call. When a call is used, the system can actively call a subscriber and play a recorded voice message when there is a voice message. Another object of the present invention is to provide a method for implementing an IP-based voicemail out-of-call.
  • Step A When the calling user terminal calls the voice mailbox of the called user through the BICC signaling, the core network and the voice mail service where the calling user is located After the media server of the system successfully establishes the media channel, the media server stores the voice message recorded by the calling user according to the prompt for the called user.
  • Step B The voice mail service server of the voice mail service system pages the called party by using BICC signaling. The user controls the media server to play a voice message for the called user when the called user answers.
  • Step ⁇ when the calling user terminal calls the voice mailbox of the called user through the BICC signaling, the core network where the calling user is located establishes a media channel with the media server of the voice mail service system, and the following steps are included:
  • Step A1 The calling user sends the media information of the calling user to the voice mail service server through the BICC signaling.
  • Step 2 The voice mail service server sends the media information of the calling user to the media server, after media negotiation, the media The server returns the media information of the media server.
  • Step A3 The voicemail service server sends the media information of the media server to the calling user through the BICC signaling.
  • the voice mail service server of the voice mail service system is
  • the core network where the called party is located performs media negotiation with the voice mail service server after determining that the called user is idle.
  • the performing the media negotiation between the core network of the called party and the voice mail service server includes the following steps: Step B1: The voice mail service server obtains media information of the media server; Step B2: the voice mail service server media information of the media server It is sent to the core network where the called user is located. After media negotiation, the core network where the called user is located returns the media information of the called user.
  • Step B3 The voice mail service server updates the called media information on the media server side. Further, the media information includes an IP address and a port played and received by the media, and encoding type information used.
  • the system for implementing an IP-based voicemail out-of-call comprising a voice mail service server and a media server, wherein the media server is configured to: when the calling user calls the voice mailbox of the called user through the BICC signaling, and the calling user
  • the core network is located to establish a media channel; and is used for storing the voice message recorded by the calling user according to the prompt for the called user, and playing the voice message for the called user under the control of the voice mail service server; the voice mail service server, It is used to page the called user with BICC signaling, and when the called user answers, control the media server to play the voice message for the called user.
  • the voice mail service server is configured to receive media information of the calling user sent by the calling user through the BICC signaling, and send the media information of the calling user to the media server; and pass the media information of the media server to the BICC letter.
  • the message is sent to the calling user;
  • the media server is configured to receive the media information of the calling user sent by the voice mail service server, and send the media information to the voice mail service server after media negotiation.
  • the voice mail service server is further configured to: when paging the called user by using BICC signaling, after determining that the called user is idle after the core network where the called user is located, performing the same with the media gateway of the core network where the called user is located. Media consultation.
  • the voice mail service server may be further configured to obtain media information of the media server, and send the media information of the media server to the called core network. After media negotiation, the core network where the called user is located returns the media information of the called user. ; and update the media information of the called user on the media server side. Further, the media information includes an IP address and port for media playback and reception, and encoding type information used.
  • the utility model has the beneficial effects that the device and the method for realizing the IP-based voice mailbox out-call according to the present invention store the voice message recorded by the calling user according to the prompt to the called user through the media server, and the voice mail service server uses the BICC letter.
  • the paging user can be called to control the media server to play a voice message for the called user when the called user answers the call, so that when the call uses the BICC protocol, the system can actively call the signing user when there is a voice message. Play the recorded voice message.
  • FIG. 1 is a schematic diagram of a voice mail service subsystem according to an embodiment of the present invention
  • FIG. 2 is a flowchart of a method for implementing an IP voice call outbound according to an embodiment of the present invention
  • FIG. 3 is another embodiment of the present invention.
  • the voice mail service subsystem of the embodiment of the present invention includes a voice mail service server and a media server.
  • the media server is configured to establish a media channel with the core network where the calling user is located when the calling user calls the voice mailbox of the called user through the BICC signaling; and is configured to prompt the calling user to be called
  • the voice message recorded by the user is stored, and the voice message is played for the called user under the control of the voice mail service server.
  • the voice mail service server is configured to page the called user with the BICC signaling, and control the media server to play the voice message for the called user when the called user answers.
  • the voicemail service subsystem may further include a voicemail interface machine for managing the recorded voicemail.
  • the voice mail service server performs most of the call service functions, including the service logic control of the voice mail service, the storage and query of the service data, the interface provided with the voice mail interface machine, and the communication between the calling and called BICC signaling devices, especially the mobile exchange. Interaction of the Mobile Switching Center (MSC) server (Server), control of the media server, etc.
  • MSC Mobile Switching Center
  • a media server configured to receive a control command of the voice mail service server, and perform a corresponding operation according to the control instruction, including completing a voice message storage by using a network file system (NFS) provided by the media server;
  • NFS network file system
  • the media gateway (MGW) of the core network where the user is located is negotiated to play the audio file according to the predetermined mode; controlled by the voice mail service server, and interacts with the main called media device, especially the MGW, for example, Record messages, receive numbers, play messages, and more.
  • the method for implementing an IP-based voicemail outbound call includes the following steps: Step 100: A calling user calls a voice mailbox of a called user through BICC signaling; Step 200: A core of the calling user The media gateway of the network and the media server perform media negotiation to establish a media channel.
  • Step 200 includes the following steps: Step 21: The calling user terminal sends the calling media to the voice mail service server by using BICC signaling; Step 22: The voice mail service server sends the calling media to the media server, and after the media negotiation, the media server returns the media of the media server.
  • Step 300 The calling user records the voice message to the called user according to the prompt;
  • Step 400 At a certain time point, the voice mail service server pages the called user by using BICC signaling;
  • Step 500 The called user is located After determining that the called user is idle, the core network performs a media negotiation process with the voice mail service server.
  • Step 600 The called user answers, listens to the recorded voice message, the called user voice message is completely listened, and the called user hangs up, the core network Release the connection to the voicemail service server.
  • Step 500 includes the following steps: Step 51: The voice mail service server obtains the media of the media server; Step 52: The voice mail service server sends the media of the media server to the called core network, and after the media negotiation, the called core network returns The media called MGW; Step 53: The voice mail service server updates the media of the called MGW on the media server side. As shown in FIG.
  • the method for implementing an IP-based voicemail outbound call includes: Step 301: A calling user initiates a call to a called user, and MSC Server A queries that the called user is offline, and queries The called user subscribes to the voicemail service, and sends a BICC protocol Initial Address Message (IAM) to the voicemail service server, which has a codec list supported by the user plane.
  • APIAM BICC protocol Initial Address Message
  • Step 303 The MSC Server A sends a BICC protocol APM message to the voicemail service server, and the message carries the media information sdpA of the MGW, where the media information includes media playing and Received IP address, port, and information such as the type of encoding used.
  • SIP Session Initiation Protocol
  • Step 305 After media negotiation, the media server replies to the SIP protocol 200 OK message to the voicemail service server, where the message carries the media information sdpC, where the media information includes information such as the IP address, port, and encoding type used for media playback and reception.
  • Step 306 The voice mail service server sends a SIP protocol acknowledgement (ACK) message to the media server, indicating that a 200 OK message is received.
  • Step 307 The voice mail service server sends a BICC signaling APM message to the MSC.
  • ACK SIP protocol acknowledgement
  • Step 308 The MGW A sends a Lu User Plane (IuUP) protocol initialization (Initailization) message to the media server according to the previous media negotiation result, where the media stream coding mode and rate information are specified in the message.
  • Step 309 The media server replies to the IuUP protocol ACK message to the MGW_A, indicating that the message is received and accepts the coding mode and rate.
  • Step 310 The MSC Server_A sends a BICC protocol continuity (COT) message to the voicemail service server, indicating that the user plane bearer is established.
  • COT BICC protocol continuity
  • Step 311 The voice mail service server sends a BICC protocol address complete message (ACM) to the MSC Server A, indicating that the voice is ready to play.
  • Step 312 The voice mail service server sends a BICC protocol response (answer, ANM) message to the MSC Server A, indicating that the voice mail service server responds as the called party.
  • Step 313 The voice mail service server sends a SIP protocol information (Info) message to the media server, and indicates that the prompt tone is played, and the user is prompted to record the voice message.
  • Step 314 The media server replies to the SIP protocol 200 OK message to the voicemail service server, and the calling user begins to record the voice message.
  • Step 315 After the user finishes recording the voice message, the voice mail service server sends the SIP protocol.
  • the Info message is sent to the media server, indicating that the prompt tone is played, and the user is prompted to record the voice message successfully.
  • Step 321 At a certain point in time, the voice mail service server calls the user to send a BICC protocol IAM message to the MSC Server B, and the message has a codec list supported by the user plane.
  • Step 322 The MSC Server B replies to the BICC protocol APM message to the voice mail service server, and the message carries the codec type of the selected user plane to notify the voice mail service server to transmit the voice code.
  • Step 324 After media negotiation, the media server replies to the SIP protocol 200 OK message to the voice mail service server, and the message carries the media information sdpD.
  • Step 325 The voice mail service server sends a SIP protocol ACK message to the media server, indicating that a 200 OK message is received.
  • Step 326 The voice mail service server sends a BICC signaling APM message to the MSC Server B, where the message carries the media information sdpD of the media server.
  • Step 327 After media negotiation, the MSC Server B sends a BICC signaling APM message to the voice mail service server, where the message carries the media information sdpB of the MGW_B.
  • Step 328 The voice mail service server sends a SIP protocol Update message to the media server, where the message carries the media information sdpB of the MGW_B for updating the media.
  • Step 329 The media server sends a SIP protocol 200 OK message to the voice mail service server, where the message carries the updated media information sdpD, the information content and the sdpD.
  • Step 330 The media server sends an IuUP protocol initialization according to the result of the previous media negotiation.
  • Step 331 The MGW B replies to the IuUP protocol ACK protocol to the media server, indicating that the message is received and accepts the coding mode and rate.
  • Step 332 The voice mail service server sends a BICC protocol COT message to the MSC.
  • Step 333 The MSC Server B sends a BICC protocol ACM message to the voicemail service server.
  • Step 334 The called party answers, and the MSC Server B sends a BICC protocol ANM message to the voice mail service server.
  • Step 335 The voice mail service server sends a SIP protocol Info message to the media server, instructing the user to play the prompt tone, and prompting the user to listen to the voice message.
  • Step 336 The media server returns a SIP protocol 200 OK message to the voice mail service server, and plays a prompt tone. The user operates according to the prompts and listens to the voice message.
  • Step 337 The called party hangs up, and the MSC Server B sends a BICC protocol REL message to the voice mail service server.
  • Step 338 The voice mail service server sends a SIP protocol BYE message to the media server, requesting to stop playing and releasing resources.
  • Step 339 The media server releases the resource and replies to the SIP protocol 200 OK message to the voicemail service server.
  • Step 340 The voice mail service server replies to the BICC protocol RLC message to the MSC Server B, indicating that the call has been released. The voice outbound call service ends.
  • the system and method for implementing an IP voice call outbound call according to the present invention can use the BICC protocol when calling, and in the case of a voice message, the system can actively call the signing user to play the recorded voice message.

Description

一种实现 IP化语音信箱外呼的系统及方法 技术领域 本发明涉及电信增值业务领域, 特别涉及一种实现互联网协议 ( Internet Protocol, IP )化语音信箱外呼的系统及方法。 背景技术 载无关呼叫控制( Bearer Independent Call Control, BICC )协议是国际 电信联盟技术特另 l]小组 ( International Telecommunications Union-Technical Specification Group, ITU-TSG ) 11小组制订的与承载无关的呼叫控制协议。 BICC协议的主要特点是呼叫业务功能( Call Service Function, CSF )和承载 控制功能 (Bearer Control Function, BCF ) 分离, 使呼叫控制信令可在各种 网络上 载, 包括消息传递部分 ( Message Transport Protocol, MTP )、 7号 信令系统 (Signaling System 7, SS7 ) 网络、 异步传输模式 (Asynchronous Transfer Mode, 简称为 ATM ) 网络、 IP网络。 BICC协议由综合业务数字网 ( Integr anted Services Digital Network, ISDN )用户部分 ( Integr anted Services Digital Network User Part, ISUP ) 协议演变而来, 是传统电信网络向综合多 业务网络演进的重要支撑工具。
BICC 的呼叫业务功能定义了以下四种类型: 呼叫业务节点功能 (Call Service Node Function, CSF-N ), 主要包括接口月艮务节点 ( Interface Serving Node, ISN )中与窄带业务和同层对等的呼叫业务功能( Call Service Function, CSF ); 呼叫业务转接功能 (Call Service Transfer Function, CSF-T ), 主要包 括转接业务节点 (Transit Serving Node, TSN ) 中为建立、 维持骨千网呼叫 和其它 CSF对等层之间信令中继有关的承载业务转接功能,以及调用在骨千 网中传送窄带 载业务所需的 7 载控制转接功能 ( Bearer Control Transfer Function, BCF-T ); 呼叫业务关口功能 ( Call Control Gateway Function, CSF-G ), 主要包括 GSN中为建立、 维持骨千网呼叫和在它 CSF对等层之间 信令中继有关的承载业务转接功能, 以及调用在骨千网中传送窄带承载业务 所需的 载控制关口功能 ( Bearer Control Gateway Function, BCF-G ); 呼叫 业务协调功能 (Call Control Coordination Function, CSF-C ), 包括提供呼叫 协调和在 CSF 对等层之间信令中继有关建立、 维持骨千网呼叫有关协调功 能。 BICC的承载控制功能定义了以下五种类型: 承载控制接合功能( Bearer Control Joint Function, BCF-J ), 提供两个相关呼叫业务功能的承载交换功能 的控制、 通信能力, 以及建立和释放骨千网连接所需的信令能力; 承载控制 网关功能, 提供它的相关呼叫业务功能 (CSF-G ) 的承载交换功能的控制、 通信能力, 以及建立和释放骨千网连接所需的信令能力; 承载控制节点功能 ( Bearer Control Node Function, BCF-N ), 提供它的相关呼叫业务功能的 载交换功能的控制、 通信能力, 以及建立和释放到对等 (BCF-N ) 骨千网连 接所需的信令能力; 载控制中继功能 (Bearer Control Relay Function, BCF-R ), 为完成边缘到边缘骨千网连接, 提供承载交换功能的控制并中继承 载控制信令请求到下一个 BCF; 承载控制转接功能, 提供它的相关呼叫业务 功能 (CSF-T ) 的承载交换功能的控制、 通信能力, 以及建立和释放骨千网 连接所需的信令能力。 现阶段, 国内以及海外的核心网正在进行一轮以 BICC协议为主体的 IP 化改造, 因此, 需要找到一种方法, 能够实现语音信箱的 IP化改造, 能够在 呼叫使用 BICC协议时, 在有语音留言的情况下, 可以主动呼叫签约用户, 播放录制的语音留言。 发明内容 本发明的目的在于, 提供一种实现 IP化语音信箱外呼的系统, 能够在呼 叫使用 BICC协议时, 在有语音留言的情况下, 系统可以主动呼叫签约用户, 播放录制的语音留言。 本发明的另一目的在于, 提供一种实现 IP化语音信箱外呼的方法, 能够 在呼叫使用 BICC协议时, 在有语音留言的情况下, 可以主动呼叫签约用户, 播放录制的语音留言。 本发明的实现 IP化语音信箱外呼的方法, 包括下列步骤: 步骤 A: 在主叫用户终端通过 BICC信令呼叫被叫用户的语音信箱时, 在主叫用户所在的核心网与语音信箱业务系统的媒体服务器成功建立媒体通 道后,媒体服务器将主叫用户根据提示为被叫用户录制的语音留言进行存储; 步骤 B: 语音信箱业务系统的语音信箱业务服务器以 BICC信令寻呼该 被叫用户, 在被叫用户接听时, 控制媒体服务器为被叫用户播放语音留言。 其中, 在所述步骤 Α中, 在主叫用户终端通过 BICC信令呼叫被叫用户 的语音信箱时, 主叫用户所在的核心网与语音信箱业务系统的媒体服务器建 立媒体通道, 包括下列步骤: 步骤 A1:主叫用户通过 BICC信令将主叫用户的媒体信息发送给语音信 箱业务服务器; 步骤 Α2:所述语音信箱业务服务器将主叫用户的媒体信息发送给媒体服 务器, 经过媒体协商, 媒体服务器返回媒体服务器的媒体信息; 步骤 A3 : 所述语音信箱业务服务器将媒体服务器的媒体信息通过 BICC 信令发送给主叫用户。 其中, 在所述步骤 B 中, 语音信箱业务系统的语音信箱业务服务器以
BICC 信令寻呼该被叫用户时, 包括下列步骤: 被叫所在核心网在判断被叫 用户空闲后, 与语音信箱业务服务器执行媒体协商。 其中, 被叫所在核心网与语音信箱业务服务器执行媒体协商包括下列步 骤: 步骤 B1 : 所述语音信箱业务服务器获取媒体服务器的媒体信息; 步骤 B2:所述语音信箱业务服务器将媒体服务器的媒体信息发给被叫用 户所在的核心网, 经过媒体协商, 被叫用户所在的核心网返回被叫用户的媒 体信息; 步骤 B3: 语音信箱业务服务器在媒体服务器侧更新被叫的媒体信息。 进一步地, 所述媒体信息包括媒体播放和接收的 IP地址、 端口以及使用 的编码类型信息。 本发明的实现 IP化语音信箱外呼的系统,包括语音信箱业务服务器和媒 体服务器, 其中, 媒体服务器, 用于在主叫用户通过 BICC信令呼叫被叫用 户的语音信箱时, 与主叫用户所在的核心网建立媒体通道; 以及用于将主叫 用户根据提示为被叫用户录制的语音留言进行存储, 并在语音信箱业务服务 器的控制下为被叫用户播放语音留言; 语音信箱业务服务器, 用于以 BICC 信令寻呼被叫用户, 在被叫用户接听时, 控制媒体服务器为被叫用户播放语 音留言。 其中, 语音信箱业务服务器, 用于接收主叫用户通过 BICC信令发来的 主叫用户的媒体信息, 并将主叫用户的媒体信息发送给媒体服务器; 以及将 媒体服务器的媒体信息通过 BICC信令发送给主叫用户; 媒体服务器, 用于 接收语音信箱业务服务器发来的主叫用户的媒体信息, 经过媒体协商, 将自 身的媒体信息发送至语音信箱业务服务器。 其中, 语音信箱业务服务器, 进一步用于在以 BICC信令寻呼该被叫用 户时, 在被叫用户所在的核心网判断被叫用户空闲后, 与被叫用户所在的核 心网的媒体网关进行媒体协商。 另外, 语音信箱业务服务器, 可以进一步用于获取媒体服务器的媒体信 息, 并将媒体服务器的媒体信息发给被叫核心网, 经过媒体协商, 被叫用户 所在的核心网返回被叫用户的媒体信息; 以及在媒体服务器侧更新被叫用户 的媒体信息。 进一步地,媒体信息包括媒体播放和接收的 IP地址、 端口以及使用的编 码类型信息。 本发明的有益效果是:依照本发明的实现 IP化语音信箱外呼的装置及方 法, 通过媒体服务器将主叫用户根据提示为被叫用户录制的语音留言进行存 储, 语音信箱业务服务器以 BICC信令寻呼该被叫用户, 在被叫用户接听时, 控制媒体服务器为被叫用户播放语音留言, 能够实现在呼叫使用 BICC协议 时, 在有语音留言的情况下, 系统可以主动呼叫签约用户, 播放录制的语音 留言。 附图说明 图 1为本发明实施例的语音信箱业务子系统示意图; 图 2为本发明实施例的一种实现 IP化语音信箱外呼的方法流程图; 图 3为本发明实施例的另一种实现 IP化语音信箱外呼的方法流程图。 具体实施方式 以下,参考附图 1〜3详细描述本发明实施例的实现 IP化语音信箱外呼的 系统及方法。 如图 1所示, 本发明实施例的语音信箱业务子系统包括语音信箱业务服 务器和媒体服务器。 其中, 媒体服务器, 用于在主叫用户通过 BICC信令呼叫被叫用户的语 音信箱时, 与主叫用户所在的核心网建立媒体通道; 以及用于将主叫用户才艮 据提示为被叫用户录制的语音留言进行存储, 并在语音信箱业务服务器的控 制下为被叫用户播放语音留言。 语音信箱业务服务器, 用于以 BICC信令寻呼被叫用户, 在被叫用户接 听时, 控制媒体服务器为被叫用户播放语音留言。 另外, 该语音信箱业务子系统还可以包括语音信箱接口机, 该语音信箱 接口机用于管理录制的语音留言。 其中, 语音信箱业务服务器完成大部分呼叫业务功能, 包括语音信箱业 务的业务逻辑控制、业务数据的保存和查询、提供与语音信箱接口机的接口、 与主被叫 BICC 信令设备尤其是移动交换中心 (Mobile Switching Center, MSC )服务器 (Server ) 的交互、 对媒体服务器的控制等。 媒体服务器, 用于接收语音信箱业务服务器的控制指令, 并根据该控制 指令执行相应的操作, 包括通过媒体服务器带有的网络文件系统 (Network File System, NFS ) 完成语音留言的存储; 与主被叫用户所在核心网的媒体 网关 ( Media Gateway, MGW ) 进行协商, 按照预定模式对音频文件进行播 放; 受语音信箱业务服务器的控制, 和主被叫媒体设备尤其是 MGW进行媒 体面的交互, 比如录制留言、 收号、 播放留言等。 如图 2所示,本发明实施例的实现 IP化语音信箱外呼的方法包括下列步 骤: 步骤 100: 主叫用户通过 BICC信令呼叫被叫用户的语音信箱; 步骤 200: 主叫用户所在核心网的媒体网关和媒体服务器进行媒体协商, 建立媒体通道; 其中, 步骤 200包括下列步骤: 步骤 21: 主叫用户终端以 BICC信令, 将主叫媒体发送给语音信箱业务 服务器; 步骤 22: 语音信箱业务服务器将主叫媒体发送给媒体服务器, 经过媒体 协商, 媒体服务器返回媒体服务器的媒体; 步骤 23: 语音信箱业务服务器将媒体服务器的媒体通过 BICC信令发送 给主叫用户终端。 步骤 300: 主叫用户根据提示, 录制了给被叫用户的语音留言; 步骤 400: 到达某个时间点, 语音信箱业务服务器以 BICC信令寻呼该 被叫用户; 步骤 500: 被叫用户所在的核心网在判断被叫用户空闲后, 与语音信箱 业务服务器执行媒体协商流程; 步骤 600: 被叫用户接听, 收听录制的语音留言, 被叫用户语音留言收 听完毕, 被叫用户挂机, 核心网释放与语音信箱业务服务器的连接。 其中, 步骤 500包括下列步骤: 步骤 51 : 语音信箱业务服务器获取媒体服务器的媒体; 步骤 52: 语音信箱业务服务器将媒体服务器的媒体发给被叫核心网, 经 过媒体协商, 被叫核心网返回被叫 MGW的媒体; 步骤 53 : 语音信箱业务服务器在媒体服务器侧更新被叫 MGW的媒体。 如图 3所示, 本发明实施例的实现 IP化语音信箱外呼的方法流程包括: 步骤 301 : 主叫用户发起对被叫用户的呼叫, MSC Server A查询到被叫 用户不在线, 并查询到被叫用户签约了语音信箱服务, 发送 BICC协议初始 地址消息 (Initiation Address Message, IAM ) 给语音信箱业务月艮务器, 该消 息中带有用户面支持的编解码列表。 步骤 302:语音信箱业务服务器回复 BICC协议应用传送机制消息( APM ) 给 MSC Server_A,该消息中带有选用的用户面的编解码类型, 以通知主叫侧 核心网传送语音釆用这种编解码。 步骤 303: MSC Server A发送 BICC协议 APM消息给语音信箱业务服 务器, 消息带有 MGW的媒体信息 sdpA, 其中, 该媒体信息包括媒体播放和 接收的 IP地址、 端口以及使用编码类型等信息。 步骤 304: 语音信箱业务服务器触发语音留言录制业务, 发送会话启动 协议 ( Session Initiation Protocol, SIP )协议邀请 ( Invite )消息给媒体月艮务器, 消息中带有媒体信息 sdpA , 以建立与媒体服务器的连接。 步骤 305 : 经过媒体协商, 媒体服务器回复 SIP协议 200 OK消息给语音 信箱业务服务器, 消息中带有媒体信息 sdpC, 其中, 该媒体信息包括媒体播 放和接收的 IP地址、 端口以及使用编码类型等信息。 步骤 306: 语音信箱业务服务器发送 SIP协议确认(ACK ) 消息给媒体 月艮务器, 表示收到了 200 OK消息。 步骤 307 : 语音信箱业务服务器发送 BICC 信令 APM 消息给 MSC
Server A, 消息中带有媒体服务器的媒体信息 sdpC。 步骤 308: MGW A才艮据之前媒体协商结果,发送 lu接口用户面( lu User Plane, 简称为 IuUP ) 协议初始化 ( Initailization ) 消息给媒体服务器, 该消 息中指定了媒体流编码方式以及速率等信息。 步骤 309: 媒体服务器回复 IuUP协议 ACK消息给 MGW_A, 表示收到 消息并接受釆用的编码方式以及速率。 步骤 310: MSC Server_A发送 BICC协议导通 (continuity, COT ) 消息 给语音信箱业务服务器, 表示用户面承载建立完毕。 步骤 311 : 语音信箱业务服务器发送 BICC 协议地址全消息 (Address Complete Message, ACM ) 给 MSC Server A, 表示准备放音。 步骤 312: 语音信箱业务服务器发送 BICC协议应答( answer, ANM ) 消息给 MSC Server A, 表示语音信箱业务服务器作为被叫应答。 步骤 313 : 语音信箱业务服务器发送 SIP协议信息( Info )消息给媒体服 务器, 指示播放提示音, 提示用户可以录制语音留言。 步骤 314:媒体服务器回复 SIP协议 200 OK消息给语音信箱业务服务器, 主叫用户开始录制语音留言。 步骤 315: 用户录制完成语音留言后, 语音信箱业务服务器发送 SIP协 议 Info消息给媒体服务器, 指示播放提示音, 提示用户语音留言录制成功。 步骤 316:媒体服务器回复 SIP协议 200 OK消息给语音信箱业务服务器, 播放提示音, 提示用户语音留言录制成功。 步骤 317:主叫挂机, MSC Server A发送 BICC协议释放( release, REL ) 消息给语音信箱业务服务器。 步骤 318: 语音信箱业务服务器发送 SIP协议 BYE消息给媒体服务器, 要求停止放音并释放资源。 步骤 319: 媒体服务器释放资源, 回复 SIP协议 200 OK消息给语音信箱 业务服务器。 步骤 320:语音信箱业务服务器回复 BICC协议无线链路控制( Radio Link
Control, 简称为 RLC ) 消息给 MSC Server_A, 表示呼叫已经释放。 步骤 321 : 到某个时间点, 语音信箱业务服务器外呼用户, 发送 BICC 协议 IAM消息给 MSC Server B , 消息中带有用户面支持的编解码列表。 步骤 322: MSC Server B回复 BICC协议 APM消息给语音信箱业务月艮 务器, 消息中带有选用的用户面的编解码类型, 以通知语音信箱业务服务器 传送语音釆用这种编解码。 步骤 323: 语音信箱业务服务器发送 SIP协议 Invite消息给媒体服务器, 消息中带有假媒体信息 sdpFake , 建立与媒体服务器的连接。 步骤 324: 经过媒体协商, 媒体服务器回复 SIP协议 200 OK消息给语音 信箱业务服务器, 消息中带有媒体信息 sdpD。 步骤 325: 语音信箱业务服务器发送 SIP协议 ACK消息给媒体服务器, 表示收到了 200 OK消息。 步骤 326 : 语音信箱业务服务器发送 BICC 信令 APM 消息给 MSC Server B, 消息中带有媒体服务器的媒体信息 sdpD。 步骤 327: 经过媒体协商, MSC Server B发送 BICC信令 APM消息给 语音信箱业务服务器, 消息中带有 MGW_B的媒体信息 sdpB。 步骤 328:语音信箱业务服务器发送 SIP协议 Update消息给媒体服务器, 消息中带有 MGW_B的媒体信息 sdpB , 用于更新媒体。 步骤 329:媒体服务器发送 SIP协议 200 OK消息给语音信箱业务服务器, 消息中带有更新过的媒体信息 sdpD,, 信息内容和 sdpD—致。 步骤 330: 媒体艮务器 艮据之前媒体协商结果, 发送 IuUP 协议初始化
( Initailization ) 消息给 MGW_B , 消息中指定了媒体流编码方式以及速率等 信息。 步骤 331: MGW B回复 IuUP协议 ACK协议给媒体服务器, 表示收到 消息并接受釆用的编码方式以及速率。 步骤 332 : 语音信箱业务服务器发送 BICC 协议 COT 消息给 MSC
Server B, 表示用户面 载建立完毕。 步骤 333 : MSC Server B发送 BICC协议 ACM消息给语音信箱业务服 务器。 步骤 334: 被叫应答, MSC Server B发送 BICC协议 ANM消息给语音 信箱业务服务器。 步骤 335: 语音信箱业务服务器发送 SIP协议 Info消息给媒体服务器, 指示播放提示音, 提示用户收听语音留言。 步骤 336:媒体艮务器回复 SIP协议 200 OK消息给语音信箱业务艮务器, 并播放提示音。 用户根据提示进行操作, 收听语音留言。 步骤 337: 被叫挂机, MSC Server B发送 BICC协议 REL消息给语音信 箱业务服务器。 步骤 338: 语音信箱业务服务器发送 SIP协议 BYE消息给媒体服务器, 要求停止放音并释放资源。 步骤 339: 媒体服务器释放资源, 回复 SIP协议 200 OK消息给语音信箱 业务服务器。 步骤 340 : 语音信箱业务月艮务器回复 BICC 协议 RLC 消息给 MSC Server B, 表示呼叫已经释放。 语音信箱外呼业务结束。 综上所述,依照本发明的实现 IP化语音信箱外呼的系统及方法, 能够在 呼叫使用 BICC协议时, 在有语音留言的情况下, 系统可以主动呼叫签约用 户, 播放录制的语音留言。 以上是为了使本领域普通技术人员理解本发明, 而对本发明所进行的详 细描述, 但可以想到, 在不脱离本发明的权利要求所涵盖的范围内还可以做 出其它的变化和 4爹改, 这些变化和 4爹改均在本发明的保护范围内。

Claims

权 利 要 求 书
1. 一种实现互联网协议 IP化语音信箱外呼的方法, 其特征在于, 包括下 列步骤:
步骤 A: 在主叫用户通过承载无关呼叫控制 BICC信令呼叫被叫 用户的语音信箱时, 在所述主叫用户所在的核心网与语音信箱业务系 统的媒体服务器建立媒体通道后, 所述媒体服务器存储所述主叫用户 根据提示为所述被叫用户录制的语音留言;
步骤 B: 所述语音信箱业务系统的语音信箱业务服务器以 BICC 信令寻呼所述被叫用户, 在所述被叫用户接听时, 控制所述媒体月艮务 器为所述被叫用户播放所述语音留言。
2. 如权利要求 1所述的实现 IP化语音信箱外呼的方法, 其特征在于, 在 所述步骤 A中, 在所述主叫用户通过 BICC信令呼叫所述被叫用户的 语音信箱时, 所述主叫用户所在的核心网与所述语音信箱业务系统的 媒体服务器建立媒体通道包括下列步骤:
步骤 A1: 所述主叫用户通过 BICC信令将所述主叫用户的媒体信 息发送给语音信箱业务服务器;
步骤 A2: 所述语音信箱业务服务器将所述主叫用户的媒体信息发 送给所述媒体服务器, 经过媒体协商, 所述媒体服务器返回所述媒体 服务器的媒体信息;
步骤 A3 : 所述语音信箱业务服务器将所述媒体服务器的媒体信息 通过 BICC信令发送给所述主叫用户。
3. 如权利要求 1所述的实现 IP化语音信箱外呼的方法, 其特征在于, 在 所述步骤 B中 ,所述语音信箱业务系统的语音信箱业务服务器以 BICC 信令寻呼所述被叫用户时, 包括下列步骤:
所述被叫用户所在的核心网在判断所述被叫用户空闲后, 与所述 语音信箱业务服务器执行媒体协商。
4. 如权利要求 3所述的实现 IP化语音信箱外呼的方法, 其特征在于, 所 述被叫用户所在的核心网与所述语音信箱业务服务器执行媒体协商包 括下列步 4聚: 步骤 Bl : 所述语音信箱业务服务器获取所述媒体服务器的媒体信 息;
步骤 B2: 所述语音信箱业务服务器将所述媒体服务器的媒体信息 发给所述被叫用户所在的核心网, 经过媒体协商, 所述被叫用户所在 的核心网返回所述被叫用户的媒体信息;
步骤 B3 : 所述语音信箱业务服务器在所述媒体服务器侧更新所述 被叫用户的媒体信息。 如权利要求 1至 4中任一项所述的实现 IP化语音信箱外呼的方法, 其 特征在于, 所述媒体信息包括媒体播放和接收的 IP地址、 端口以及使 用的编码类型信息。 一种实现 IP化语音信箱外呼的系统, 其特征在于, 包括语音信箱业务 服务器和媒体服务器, 其中,
所述媒体月艮务器, 用于在主叫用户通过 BICC信令呼叫被叫用户 的语音信箱时, 与所述主叫用户所在的核心网建立媒体通道; 以及用 于存储所述主叫用户根据提示为所述被叫用户录制的语音留言, 并在 所述语音信箱业务服务器的控制下为所述被叫用户播放所述语音留 所述语音信箱业务服务器, 用于以 BICC信令寻呼所述被叫用户 , 在所述被叫用户接听时, 控制所述媒体服务器为所述被叫用户播放所 述语音留言。 如权利要求 6所述的实现 IP化语音信箱外呼的系统, 其特征在于, 所述语音信箱业务服务器, 用于接收所述主叫用户通过 BICC信 令发来的所述主叫用户的媒体信息, 并将所述主叫用户的媒体信息发 送给所述媒体服务器; 以及将所述媒体服务器的媒体信息通过 BICC 信令发送给所述主机用户;
所述媒体服务器, 用于接收所述语音信箱业务服务器发来的所述 主叫用户的媒体信息, 经过媒体协商, 将自身的媒体信息发送至所述 语音信箱业务服务器。 如权利要求 6所述的实现 IP化语音信箱外呼的系统, 其特征在于, 所述语音信箱业务服务器, 进一步用于在以 BICC信令寻呼所述 被叫用户时,在所述被叫用户所在的核心网判断所述被叫用户空闲后, 与所述被叫用户所在的核心网的媒体网关进行媒体协商。
9. 如权利要求 8所述的实现 IP化语音信箱外呼的系统, 其特征在于, 所述语音信箱业务服务器, 进一步用于获取所述媒体服务器的媒 体信息, 并将所述媒体服务器的媒体信息发给所述被叫用户所在的核 心网, 经过媒体协商, 所述被叫用户所在的核心网返回所述被叫用户 的媒体信息; 以及在所述媒体月艮务器侧更新所述被叫用户的媒体信息。 如权利要求 6至 9中任一项所述的实现 IP化语音信箱外呼的系统, 其 特征在于, 所述媒体信息包括媒体播放和接收的 IP地址、 端口以及使 用的编码类型信息。
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