WO2008086688A1 - Procédé et dispositif pour service de transfert aveugle - Google Patents

Procédé et dispositif pour service de transfert aveugle Download PDF

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Publication number
WO2008086688A1
WO2008086688A1 PCT/CN2007/003537 CN2007003537W WO2008086688A1 WO 2008086688 A1 WO2008086688 A1 WO 2008086688A1 CN 2007003537 W CN2007003537 W CN 2007003537W WO 2008086688 A1 WO2008086688 A1 WO 2008086688A1
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WIPO (PCT)
Prior art keywords
user
call
application server
media
parameter information
Prior art date
Application number
PCT/CN2007/003537
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English (en)
French (fr)
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WO2008086688A8 (fr
Inventor
Min Shen
Zhisong Wang
Chengnian Shen
Wenjie Ling
Lu Zhang
Original Assignee
Zte Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by Zte Corporation filed Critical Zte Corporation
Priority to EP07845893.2A priority Critical patent/EP2117220B1/en
Priority to US12/522,115 priority patent/US20100046733A1/en
Publication of WO2008086688A1 publication Critical patent/WO2008086688A1/zh
Publication of WO2008086688A8 publication Critical patent/WO2008086688A8/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M3/00Automatic or semi-automatic exchanges
    • H04M3/42Systems providing special services or facilities to subscribers
    • H04M3/58Arrangements for transferring received calls from one subscriber to another; Arrangements affording interim conversations between either the calling or the called party and a third party
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/10Architectures or entities
    • H04L65/1016IP multimedia subsystem [IMS]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/10Architectures or entities
    • H04L65/1063Application servers providing network services
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066Session management
    • H04L65/1083In-session procedures
    • H04L65/1093In-session procedures by adding participants; by removing participants
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066Session management
    • H04L65/1096Supplementary features, e.g. call forwarding or call holding
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M2203/00Aspects of automatic or semi-automatic exchanges
    • H04M2203/20Aspects of automatic or semi-automatic exchanges related to features of supplementary services
    • H04M2203/2022Path replacement

Definitions

  • BACKGROUND OF THE INVENTION 1.
  • the present invention relates to the field of communications, and more particularly to a method and apparatus for implementing a blind transfer service in, for example, a Next Generation Network (NGN).
  • NTN Next Generation Network
  • BACKGROUND OF THE INVENTION Call Transfer is a supplementary service in a communication system: When two users (User A and User B) establish a call in the communication system, one of the users (using User B as an example) can request Transfer the current call to the third party (User C), that is, establish a call between User A and User C, and disconnect the call channel between User A and User B.
  • a common application scenario for this service is: The general manager secretary (user B) first answers all incoming calls (user A), asks the other party to come, and calls the general manager for the call that needs the general manager to answer the call.
  • User C There are two types of call forwarding services: One is to ask for a transfer, that is, user B establishes a call with user C before calling (inquiring user C to agree to talk with user A), and then initiates a transfer request to make the user A establishes a call with user C, and disconnects two call sessions between user B and user A, user B, and user C, respectively.
  • the other is a blind transfer, that is, user B does not establish a call with user C first, but directly initiates a transfer request, so that user A establishes a call with user C.
  • NTN Next Generation Network
  • IMS IP Multimedia Subsystem
  • the call forwarding service can be completed by the user's intelligent terminal, or by the intelligent terminal and the application server (AS) in the network.
  • AS application server
  • S-CSCF service-call session control function
  • the inter-service messages (identified by dashed lines) flow through their respective application servers, which can implement rich services through various processing of service messages.
  • the user terminal A and the user terminal B exchange and negotiate the media parameters supported by the two parties, and establish a media stream connection (identified by a solid line) between the two, and the media stream is used for transmitting data such as a voice packet.
  • Figure 2 is a call transfer (blind transfer) process in the existing 3rd Generation Partnership Project (3GPP) technical specification.
  • user terminal #1 (user A) establishes a call with user terminal #2 (user B) first (step 1); then user terminal #2 sends a transfer request to user terminal #1, after The network side device (proxy-call session control function, service-call session control function, etc.) is delivered to the user terminal #1 (steps 2 to 8); after receiving the transfer request, the user terminal #1 first goes to the user terminal #3 (User C) sends an invitation request, establishes a call connection between the user terminal #1 and the user terminal #F (steps m.
  • the network side device proxy-call session control function, service-call session control function, etc.
  • Figure 3 is a blind transfer process in the existing Advanced Network Telecommunications Internet Convergence Service and Protocol Organization (TISPAN) technical specification. For the sake of simplicity, network devices such as the proxy-call session control function and the service-call session control function are omitted in this figure.
  • TISPAN Advanced Network Telecommunications Internet Convergence Service and Protocol Organization
  • user terminal-A (user A) is in the process of talking with user terminal-B (user B), application server of application terminal-A (application server-A) and application server of user terminal-B (Application Server-B) participates in this call process, providing supplementary services for the respective service objects; then, the user terminal-B sets the user terminal-A to the call hold state (that is, the service messages can communicate, but the media stream is temporarily interrupted. Then, the user terminal-B sends a transfer request to the user terminal-A (steps 1 to 3), and after the user terminal-A indicates accepting the request (steps 4 to 6), the user terminal-B sends the user terminal-A to the user terminal-A.
  • the user terminal-A sends an invitation request to the user terminal -C (user C), at the user terminal-A and the user terminal-C Establishing a call (steps 19 to 30); in the above process, the user terminal-A will use the notification message to notify the relevant situation before preparing to send the invitation request to the user terminal-C and when the user terminal-C is connected. Notify the user terminal-B (minute Do not correspond to steps 13 ⁇ 18, steps 31 ⁇ 36).
  • a common feature of the above two processes is that the call transfer request initiated by the user B is transmitted by the network to the user A, and the user A is responsible for initiating the call to the third-party user C, and the call is transferred by the user A in the process.
  • the progress is reported to User B who initiated the call transfer.
  • User terminal A must support the processing of the call transfer request, and need to be able to correctly initiate a call invitation request to the third party user C (including setting various related parameters correctly), and need to correctly notify the user B of the call transfer.
  • the progress. Call forwarding is the service of user B, and the requirement for user terminal A is too high.
  • a blind transfer service method including the following steps: User A and User B first establish a call, and User B initiates a call transfer request, requesting a call with User A.
  • User B initiates call hold before initiating a call transfer request, and temporarily interrupts the media stream between user A and user B.
  • the method further includes the following steps: After the user B establishes a media stream connection with the user A, the user B connects to the user B, and the user A and the user C are successfully established. call.
  • the step of intercepting the request by the application server of the user B and returning the response to the user B further includes the following steps: The application server of the user B determines whether the user B is determined according to the service registration information of the user B. With permission to initiate call transfer, if user B does not have permission, the application server returns a rejection response to user B.
  • the method further includes the following steps: after the user C establishes a media stream connection with the user A, the application server of the user B instructs the user B to hang up, and terminates the original call established by the user A and the user B. .
  • a blind transfer service device including: a module for user A and user B to establish a call first, and then user B initiates a call transfer request, requesting it to be associated with the user
  • the call of A is transferred to the user C;
  • the second module is configured to enable the application server of the user B to intercept the request, and return the response to the user B;
  • the third module is configured to enable the application of the user B
  • the device first initiates a call invitation to the user C to obtain the media parameter information of the user C.
  • the fourth module is configured to enable the application server of the user B to initiate a re-call invitation to the user A, and provide the media parameter information of the user C to indicate the user.
  • A performs media switching, and obtains media parameter information of user A; and a fifth module, configured to enable user B's application server to provide user A's media parameter information to user C, instructing user C to establish user A's Media stream connection between.
  • the solution of the present invention is utilized to implement the blind transfer service by using the application server, and the application server controls the third-party user, informs the user of the progress of the transfer, and releases the original call, without being transferred.
  • the user terminal supports the call transfer request, thereby greatly reducing the dependence of the service on the user terminal, and fully satisfying the operator's control requirements for the call transfer service.
  • FIG. 1 is a typical service implementation architecture diagram in a next generation network
  • FIG. 2 is a flow chart of call forwarding (blind transition) in the existing 3GPP technical specification
  • FIG. 3 is a conventional TISPAN technical specification.
  • FIG. 4 is a flow chart of a method for interrogating a transfer service according to an embodiment of the present invention
  • Figure 5 is a flow diagram of a blind turn in accordance with a preferred embodiment of the present invention.
  • BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail with reference to the accompanying drawings in conjunction with the embodiments.
  • 4 is a flowchart of a method for querying a transfer service according to an embodiment of the present invention, including the following steps: Step S10, user A and user B first establish a call; step S20, user B initiates a call transfer request, requesting transfer Step S30, the application server of the user B intercepts the request, and returns an acceptance response to the user B.
  • Step S40 the application server of the user B first initiates a call invitation to the user C, and obtains the media parameter information of the user C.
  • the application server of the user B initiates a re-call invitation to the user A, provides the media parameter information of the user C, instructs the user A to perform media switching, and obtains the media parameter information of the user A.
  • Step S60 the application server of the user B goes to the user C. The media parameter information of the user A is provided, and the user C is instructed to establish a media stream connection with the user A.
  • Step S70 After the user C establishes a media stream connection with the user A, the application server of the user B instructs the user B to hang up, and terminates the original call established by the user A and the user B. Further, the foregoing method may further include the following steps: User B initiates call hold before initiating a call transfer request, and temporarily interrupts the media stream between user A and user B. Further, the foregoing method may further include the following steps: after the application server of the user B establishes a media stream connection with the user A, the user B has successfully established a call with the user B and the user C. .
  • the above method may further include the following steps: User B's application server notifies user B that the call forwarding is in progress before initiating a call invitation to user C. Further, the foregoing method may further have the following features: In step S30, the application server of the user may determine, according to the service registration information of the user, whether the user has the right to initiate call transfer, and if the user does not have permission, The application server then returns a rejection response to the user.
  • the network device such as the proxy-call session control function, the service-call session control function, etc.
  • the user terminal- ⁇ call transfer request sent to the user terminal- ⁇ is intercepted by the application server- ⁇ (application server providing the service for the user), and the application server- ⁇ confirms to accept the transfer request to the user terminal- ⁇ Then, the application server sends an invitation request to the user terminal-C. After the user terminal-C answers, the application server- ⁇ sends a re-invitation request to the user terminal- ⁇ to modify the media stream parameter information of the user terminal- ⁇ .
  • the application server- ⁇ application server providing the service for the user
  • the application server- ⁇ confirms to accept the transfer request to the user terminal- ⁇
  • the application server sends an invitation request to the user terminal-C.
  • the application server- ⁇ sends a re-invitation request to the user terminal- ⁇ to modify the media stream parameter information of the user terminal- ⁇ .
  • the media switching is performed so that the user terminal- ⁇ establishes a call with the user terminal-C; finally, the AS sends an on-hook request to the user terminal-B, and disconnects the call between the user terminal-A and the user terminal-B.
  • This embodiment includes the following steps:
  • User B causes the user terminal -B to issue a call forwarding request to the application server -B through some operation, and requests the call to be transferred to the user C.
  • the application server -B judges that the user has the right to use the call transfer service, and sends a call transfer acceptance response to the user B, indicating that the request has been accepted.
  • the application server -B sends a transfer notification message to the user B indicating that the call to the user C is ready to be initiated. 4) User B returns a confirmation response to the application server -B.
  • Application server -B initiates an invitation request to user C.
  • the user terminal -C returns a success response response, carrying the media parameter information it supports.
  • the application server-B sends a re-invitation request to the user terminal-A, and provides the media parameter information of the user terminal-C to the user terminal-A for the user terminal-A to switch the media stream.
  • User terminal -A returns a successful response response, carrying the media parameter information it supports.
  • Application Server -B confirms the response of user terminal -A.
  • the application server-B confirms the response of the user terminal-C, and the user terminal-A
  • the media parameter information is provided to the user terminal-C, and the user terminal-C and the user terminal-A successfully establish a media stream connection, and the user A and the user C can normally talk.
  • the application server -B sends a transfer notification message to the user B, indicating that the call between the user A and the user C has been established.
  • Application Server -B sends an on-hook request to User B.
  • the present invention also provides a blind transfer service device, comprising: a first module, configured to first establish a call between user A and user B, and at this time, user B initiates a call transfer request, and requests to transfer the call with user A
  • the second module is configured to enable the application server of the user B to intercept the request, and return the response to the user B.
  • the third module is configured to enable the application server of the user B to initiate a call invitation to the user C to obtain the user.
  • the media parameter information of C; the fourth module is configured to enable the application server of user B to initiate a re-call invitation to user A, provide media parameter information of user C, instruct user A to perform media switching, and obtain media parameter information of user A; And a fifth module, configured to enable the application server of the user B to provide the user C with the media parameter information of the user A, and instruct the user C to establish a media stream connection with the user A.
  • a sixth module may be further included, after the user C establishes a media stream connection with the user A, the application server of the user B instructs the user B to hang up, and terminates the user A and the user. B originally established call.
  • the seventh module may be further configured to enable the user B to initiate call hold before temporarily initiating the call transfer request, and temporarily interrupt the media flow between the user A and the user B.
  • the device may further include a block for the user B to notify the user B that the user A and the user C have been established after the user C establishes a media stream connection with the user A. Successfully established a call.
  • the ninth module may be further configured to enable the application server of the user B to notify the user B that the call transfer is in progress before initiating a call invitation to the user C.
  • the second module can also be used to enable the application of the user B.
  • the application server is used to implement the blind transfer service, and the application server controls the third-party user to notify the user of the progress of the transfer and the timing of the original call, and does not need to be supported by the transferred user terminal.
  • the call forwarding is singularly requested, thereby greatly reducing the dependence of the service on the user terminal, and fully satisfying the operator's control requirements for the call forwarding service.
  • modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be executed by the computing device in the storage device, or they may be separately fabricated into individual integrated circuit modules, or they may be Multiple modules or steps in the fabrication are implemented as a single integrated circuit module.
  • the invention is not limited to any specific combination of hardware and software. It is to be understood that changes in these specific embodiments will be apparent to those skilled in the art without departing from the scope of the invention.

Description

盲转业务方法和装置 技术领域 本发明涉及通信领域, 更具体地, 涉及例如下一代网络(NGN ) 中盲 转业务的实现方法和装置。 背景技术 呼叫转接 ( Call Transfer )是通信系统中的一种补充业务: 当两个用户 (用户 A和用户 B )在通信系统中建立通话后, 其中一个用户 (以用户 B为 例) 可以请求将当前通话转给第三方(用户 C ), 即在用户 A与用户 C之间 建立通话, 而断开用户 A与用户 B之间的通话话路。此业务的一种常见应用 场景是: 总经理秘书 (用户 B )先接听所有来电 (用户 A ), 问清对方来意, 对于需要总经理亲自接听的电话, 利用呼叫转接业务转给总经理 (用户 C )。 呼叫转接业务有两种类型: 一种是询问转接, 即用户 B在转接前先与 用户 C建立通话 (询问用户 C是否同意与用户 A通话 ), 然后再发起转接请 求, 使用户 A与用户 C建立通话, 同时分别断开用户 B与用户 A、 用户 B 与用户 C之间的两条通话话路。 另一种是盲转, 即用户 B不先与用户 C建 立通话, 而是直接发起转接请求, 使用户 A与用户 C建立通话。 在以 IP多媒体子系统 ( IMS ) 为核心的下一代网络 ( NGN ) 中, 呼叫 转接业务可由用户的智能终端自行完成, 或者由智能终端与网络中的应用服 务器 (AS ) 配合完成。 图 1是下一代网络中的一种典型业务实现架构,其中,应用服务器(AS ) 通过接口与用户归属网络的服务 _呼叫会话控制功能 ( S-CSCF )相连, 用户 终端 A与用户终端 B之间的业务消息(用虚线标识 )会流经各自的应用服务 器, 应用服务器可通过对业务消息的各种处理以实现丰富的业务。 用户终端 A与用户终端 B利用业务消息交换并协商双方所支持的媒体参数, 在两者之 间建立媒体流连接 (用实线标识), 媒体流用于传送通话话音包等数据。 图 2是现有第三代伙伴计划 (3GPP )技术规范中的呼叫转接(盲转) 流程。 在此流程中, 用户终端 #1 (用户 A ) 与用户终端 #2 (用户 B )先建立 了通话(步驟 1 ); 然后用户终端 #2 向用户终端 #1发送一条转接请求, 经过 网络侧设备 (代理-呼叫会话控制功能、 服务-呼叫会话控制功能等)传递给 用户终端 #1 (步骤 2 ~ 8 ); 用户终端 #1在收到转接请求后, 先向用户终端 #3 (用户 C )发送邀请请求,在用户终端 #1和用户终端 #F之间建立通话连接(步 m. 9 - 21 ); 然后用户终端 #1 发送转接确认响应, 将转接成功的结果通知给 用户终端 #2 (步驟 22 ~ 26 ); 最后用户终端 #2向用户终端 #1发送挂机请求, 断开用户终端 #2与用户终端 #1之间的通话话路 (步驟 27 ~ 36 )。 图 3是现有高级网络电信因特网融合业务与协议组织 (TISPAN )技术 规范中的盲转流程。 为筒化起见, 此图中省略了代理-呼叫会话控制功能、 服 务-呼叫会话控制功能等网络设备。 在此流程起始处, 用户终端 -A (用户 A ) 与用户终端 -B (用户 B )处于通话过程中, 用户终端 -A的应用服务器(应用 服务器 -A )和用户终端 -B的应用服务器(应用服务器 -B )均参与此通话过程, 为各自的 良务对象提供补充业务; 然后由用户终端 -B将用户终端 -A置为呼 叫保持状态 (即业务消息可以互通, 但媒体流暂时中断); 然后用户终端 -B 向用户终端 -A发送一条转接请求(步骤 1 ~ 3 ),在用户终端 -A表示接受此请 求 (步骤 4 ~ 6 )后, 用户终端 -B向用户终端 -A发送挂机请求, 断开两者之 间的通话话路(步骤 7 ~ 12 ); 然后用户终端 -A向用户终端 -C (用户 C )发送 邀请请求, 在用户终端 -A和用户终端 -C之间建立通话(步骤 19 ~ 30 ); 在上 述过程中, 用户终端 -A在准备向用户终端 -C发送邀请请求前以及在接通用 户终端 -C的话路时, 均会利用通知消息将相关情况通知给用户终端 -B (分别 对应步骤 13 ~ 18、 步 31 ~ 36 )。 以上两个流程的一个共同特点是, 用户 B发起的呼叫转接请求由网络 传递给用户 A, 由用户 A负责发起到第三方用户 C的通话, 并在此过程中由 用户 A将呼叫转接进果情况通报给发起呼叫转接的用户 B。这存在以下问题:
1 )用户终端 A必须支持对呼叫转接请求的处理, 需要能正确地发起到 第三方用户 C的通话邀请请求(包括正确设置各项相关参数), 需要能正确 地向用户 B通报呼叫转接进展情况。 呼叫转接是用户 B的业务,对用户终端 A的要求过高是不太合理的。
2 )在现有流程中, 用户 A邀请用户 C的时机、 用户 A向用户 B通4艮 呼叫转接进展的时机、 用户 B释放原有通话的时机均完全由用户终端自行掌 握, 这使得呼叫转接业务过于依赖终端。 如果各终端遵循的规范不一致(例 如, 图 2流程和图 3流程中用户 B挂机时机是不同的), 会导致在同一网络 内用户对同一业务的用户体验是不一致的,影响用户对网络运营商的满意度。 更为严重的是, 如果各用户终端之间未配合好, 会导致该业务失败, 例如, 用户终端 A没有向用户终端 B通报转接成功, 用户终端 B就不释放原有的 通话。 总之,现有技术中呼叫转接业务的实现过于依赖用户终端,存在很大的 局限与隐患。 因此, 运营商希望加强对呼叫转接业务的控制。 针对呼叫转接业务中的盲转业务,本发明提出了一种由应用服务器控制 的业务实现方案, 可以解决上述问题, 减少对智能终端的依赖, 满足运营商 的需求。 发明内容 本发明的目的在于提供一种由应用服务器控制的盲转业务的实现方法 和装置, 用以解决现有技术的业务流程中过于依赖用户终端造成的问题, 满 足运营商对呼叫转接业务的控制需求。 才艮据本发明的另一方面, 提供了一种盲转业务方法, 包括以下步骤: 用 户 A与用户 B首先建立通话, 此时用户 B发起呼叫转接请求, 要求将其与 用户 A的通话转接至用户 C; 用户 B的应用服务器拦截此请求, 向用户 B 返回接受响应; 用户 B的应用服务器首先向用户 C发起呼叫邀请, 获取用户 C的媒体参数信息; 用户 B的应用服务器向用户 A发起重新呼叫邀请, 提供 用户 C的媒体参数信息, 指示用户 A进行媒体切换, 并获取用户 A的媒体 参数信息; 以及用户 B的应用 良务器向用户 C提供用户 A的媒体参数信息, 指示用户 C建立起与用户 A之间的媒体流连接。 在上述的盲转业务方法中, 还可包括以下步骤: 用户 B在发起呼叫转 接请求前, 先发起呼叫保持, 暂时中断用户 A与用户 B之间的媒体流。 在上述的盲转业务方法中, 还包括以下步骤: 用户 B 的应用 务器在 用户 C建立起与用户 A之间的媒体流连接后 , 向用户 B通 4艮用户 A与用户 C已成功建立通话。 在上述的盲转业务方法中, 在用户 B 的应用服务器拦截此请求, 向用 户 B返回接受响应的步骤还包括以下步骤: 用户 B的应用 艮务器根据用户 B 的业务注册信息判断用户 B是否具有发起呼叫转接的权限,若用户 B没有权 限, 则应用服务器向用户 B返回拒绝响应。 在上述的盲转业务方法中,还包括以下步骤:在用户 C建立起与用户 A 之间的媒体流连接后, 用户 B的应用服务器指示用户 B挂机, 终止用户 A 与用户 B原先建立的通话。 根据本发明的另一方面, 提供了一种盲转业务装置, 包括: 笫一模块, 用于用户 A与用户 B首先建立通话, 此时使用户 B发起呼叫转接请求, 要 求将其与用户 A的通话转接至用户 C; 第二模块, 用于使用户 B的应用月良务 器拉截此请求, 向用户 B返回接受响应; 第三模块, 用于使用户 B的应用月良 务器首先向用户 C发起呼叫邀请, 获取用户 C的媒体参数信息; 第四模块, 用于使用户 B的应用^^务器向用户 A发起重新呼叫邀请, 提供用户 C的媒 体参数信息, 指示用户 A进行媒体切换, 并获取用户 A的媒体参数信息; 以 及第五模块, 用于使用户 B的应用月良务器向用户 C提供用户 A的媒体参数 信息 , 指示用户 C建立起与用户 A之间的媒体流连接。 综上所述, 采用本发明方案, 利用应用月良务器实现盲转业务, 由应用月 务器控制邀请第三方用户、 向用户通报转接进展、 释放原有通话的时机, 且 无需被转接用户终端支持呼叫转接请求, 从而大大减少了本业务对用户终端 的依赖, 可充分满足运营商对呼叫转接业务的控制需求。 本发明的其它特征和优点将在随后的说明书中阐述, 并且,部分地从说 明书中变得显而易见, 或者通过实施本发明而了解。 本发明的目的和其他优 点可通过在所写的说明书、 权利要求书、 以及附图中所特别指出的结构来实 现和获得。 附图说明 此处所说明的附图用来提供对本发明的进一步理解,构成本申请的一部 分, 本发明的示意性实施例及其说明用于解释本发明, 并不构成对本发明的 不当限定。 在附图中: 图 1是下一代网络中的一种典型业务实现架构图; 图 2是现有 3GPP技术规范中呼叫转接(盲转) 的流程图; 图 3是现有 TISPAN技术规范中的盲转流程图; 图 4是才艮据本发明实施例的询问转接业务方法的流程图; 以及 图 5是冲艮据本发明一个优选实施例的盲转流程图。 具体实施方式 下面将参考附图并结合实施例, 来详细说明本发明。 图 4是才艮据本发明实施例的询问转接业务方法的流程图, 包括以下步 驟: 步骤 S10, 用户 A与用户 B首先建立通话; 步骤 S20, 用户 B发起呼叫转接请求, 要求转接至用户 C; 步骤 S30, 用户 B的应用服务器拦截此请求, 向用户 B返回接受响应; 步-骤 S40, 用户 B的应用服务器首先向用户 C发起呼叫邀请, 获取用 户 C的媒体参数信息; 步骤 S50, 用户 B的应用服务器向用户 A发起重新呼叫邀请, 提供用 户 C的媒体参数信息, 指示用户 A进行媒体切换, 并获取用户 A的媒体参 数信息; 步驟 S60, 用户 B的应用服务器向用户 C提供用户 A的媒体参数信息, 指示用户 C建立起与用户 A之间的媒体流连接。 另外, 还可包括以下步 : 步骤 S70, 在用户 C建立起与用户 A之间的媒体流连接后, 用户 B的 应用服务器指示用户 B挂机, 终止用户 A与用户 B原先建立的通话。 进一步地, 上述方法还可包括以下步驟: 用户 B在发起呼叫转接请求 前, 先发起呼叫保持, 暂时中断用户 A与用户 B之间的媒体流。 进一步地, 上述方法还可包括以下步骤:用户 B的应用月良务器在用户 C 建立起与用户 A之间的媒体流连接后 , 会向用户 B ΐϋ艮用户 Α与用户 C已 成功建立通话。 进一步地, 上述方法还可包括以下步-骤: 用户 B 的应用月艮务器在向用 户 C发起呼叫邀请前, 会向用户 B通报呼叫转接正在进行中。 进一步地, 上述方法还可具有以下特点: 步骤 S30 中用户 Β的应用月良 务器可以根据用户 Β的业务注册信息判断用户 Β是否具有发起呼叫转接的权 Ρ艮, 若用户 Β没有权限, 则应用服务器向用户 Β返回拒绝响应。 下面结合图 5所示的优选实施例对本发明作进一步详细的说明。 图 5是本发明改进的盲转流程图 (为简化起见 , 此图中省略了代理-呼 叫会话控制功能、 服务-呼叫会话控制功能等网络设备), 与图 3相比, 其主 要改进之处在于: 用户终端 -Β 向用户终端 -Α发送的呼叫转接请求被应用服 务器 -Β (为用户 Β提供业务的应用服务器)截获, 由应用服务器 -Β向用户终 端 -Β确认接受此转接请求; 然后由应用服务器 -Β向用户终端 -C发送邀请请 求, 在用户终端 -C应答后, 应用服务器 -Β再向用户终端 -Α发送重新邀请请 求, 修改用户终端 -Α 的媒体流参数信息, 进行媒体切换, 使得用户终端 -Α 与用户终端 -C建立通话; 最后, 由 AS向用户终端 -B发送挂机请求, 断开用 户终端 -A与用户终端 -B之间的通话连接。 本实施例包括以下步骤:
1 ) 用户 B通过某种操作, 使用户终端 -B向应用服务器 -B发出呼叫转 接请求, 要求将呼叫转接给用户 C。
2 )应用服务器 -B判断用户具有使用呼叫转接业务的权限, 向用户 B发 送呼叫转接接受响应, 表示请求已被接受。
3 )应用服务器 -B向用户 B发送转接通知消息, 表示准备发起到用户 C 的呼叫。 4 ) 用户 B向应用月良务器 -B返回确认响应。
5-6 )应用月艮务器 -B向用户 C发起邀请请求。
7-8 ) 用户终端 -C返回成功应答响应, 携带其所支持的媒体参数信息。
9-10 )应用月良务器 -B向用户终端 -A发送重新邀请请求, 将用户终端 -C 的媒体参数信息提供给用户终端 -A, 供用户终端 -A进行媒体流的切换。 11-12 )用户终端 -A返回成功应答响应,携带其所支持的媒体参数信息。
13-14 )应用 Λ艮务器 -B对用户终端 -A的应答进行确认。
15-16 )应用月艮务器 -B对用户终端 -C的应答进行确认, 并将用户终端 -A 的媒体参数信息提供给用户终端 -C, 供用户终端 -C与用户终端 -A成功建立 媒体流连接, 用户 A与用户 C即可正常通话。
17 )应用服务器 -B向用户 B发送转接通知消息, 表示已建立用户 A与 用户 C的通话。
18 )用户 B向应用服务器 -B返回确认响应。
19 )应用服务器 -B向用户 B发送挂机请求。
18 )用户 B向应用服务器 -B返回确认响应, 释放原来与用户 A之间的 通话。 ' 本发明还提供了一种盲转业务装置, 包括: 第一模块, 用于用户 A与 用户 B首先建立通话, 此时使用户 B发起呼叫转接请求,要求将其与用户 A 的通话转接至用户 C; 第二模块, 用于使用户 B的应用服务器拦截此请求 , 向用户 B返回接受响应; 第三模块, 用于使用户 B的应用服务器首先向用户 C发起呼叫邀请, 获取用户 C的媒体参数信息; 第四模块, 用于使用户 B的 应用服务器向用户 A发起重新呼叫邀请,提供用户 C的媒体参数信息,指示 用户 A进行媒体切换, 并获取用户 A的媒体参数信息; 以及第五模块, 用于 使用户 B的应用服务器向用户 C提供用户 A的媒体参数信息, 指示用户 C 建立起与用户 A之间的媒体流连接。 在上述的盲转业务装置中, 还可包括第六模块, 用于在用户 C 建立起 与用户 A之间的媒体流连接后, 使用户 B的应用服务器指示用户 B挂机, 终止用户 A与用户 B原先建立的通话。 在上述的盲转业务装置中, 还可包括第七模块, 用于使用户 B 在发起 呼叫转接请求前,先发起呼叫保持,暂时中断用户 A与用户 B之间的媒体流。 在上述的盲转业务装置中, 还可包括第^ 块, 用于使用户 B 的应用 服务器在用户 C建立起与用户 A之间的媒体流连接后,向用户 B通报用户 A 与用户 C已成功建立通话。 在上述的盲转业务装置中, 还可包括第九模块, 用于使用户 B 的应用 月 务器在向用户 C发起呼叫邀请前, 向用户 B通报呼叫转接正在进行中。 在上述的盲转业务装置中, 第二模块还可用于使用户 B 的应用^ ^务器 根据用户 B的业务注册信息判断用户 B是否具有发起呼叫转接的权限,若用 户 B没有权限, 则应用月良务器向用户 B返回 巨绝响应。 综上所述, 采用本发明方案, 利用应用服务器实现盲转业务, 由应用服 务器控制邀请第三方用户、 向用户通报转接进展、 译放原有通话的时机, 且 无需被转接用户终端支持呼叫转接奇求, 从而大大减少了本业务对用户终端 的依赖, 可充分满足运营商对呼叫转接业务的控制需求。 显然, 本领域的技术人员应该明白, 上述的本发明的各模块或各步驟可 以用通用的计算装置来实现, 它们可以集中在单个的计算装置上, 或者分布 在多个计算装置所组成的网络上, 可选地, 它们可以用计算装置可执行的程 序代码来实现, 从而, 可以将它们存者在存储装置中由计算装置来执行, 或 者将它们分别制作成各个集成电路模块, 或者将它们中的多个模块或步骤制 作成单个集成电路模块来实现。 这样, 本发明不限制于任何特定的硬件和软 件结合。 应该明白, 这些具体实施中的变化对于本领域的技术人员来说是显 而易见的, 不脱离本发明的精神保护范围。 以上所述仅为本发明的优选实施例而已, 并不用于限制本发明, 对于本 领域的技术人员来说, 本发明可以有各种更改和变化。 凡在本发明的精神和 原则之内, 所作的任何修改、 等同替换、 改进等, 均应包含在本发明的保护 范围之内。

Claims

权 利 要 求 书
1. 一种盲转业务方法, 其特征在于, 包括以下步骤:
用户 A与用户 B首先建立通话, jt匕时用户 B发起呼叫转接请求, 要求将其与用户 A的通话转接至用户 C;
用户 B的应用 务器拦截此请求, 向用户 B返回接受响应; 用户 B的应用服务器首先向用户 C发起呼叫邀请, 获取用户 C 的媒体参数信息;
用户 B的应用服务器向用户 A发起重新呼叫邀请, 提供用户 C 的媒体参数信息, 指示用户 A进行媒体切换, 并获取用户 A的媒体参 数信息; 以及
' 用户 B的应用服务器向用户 C提供用户 A的媒体参数信息, 指 示用户 C建立起与用户 A之间的媒体流连接。
2. 根据权利要求 1所述的盲转业务方法, 其特征在于, 还包括以下步糠: 用户 B在发起呼叫转接请求前, 先发起呼叫保持, 暂时中断用户 A与用户 B之间的媒体流。
3. 根据权利要求 1所述的盲转业务方法, 其特征在于, 还包括以下步骤: 用户 B的应用服务器在用户 C建立起与用户 A之间的媒体流连 接后, 向用户 B通 4艮用户 A与用户 C已成功建立通话。
4. 根据权利要求 1所述的盲转业务方法, 其特征在于, 在用户 B的应用 月良务器拦截此请求, 向用户 B返回接受响应的步骤还包括以下步骤: 用户 B的应用服务器根据用户 B的业务注册信息判断用户 B是 否具有发起呼叫转接的权限, 若用户 B没有权限, 则应用服务器向用 户 B返回 4巨色响应。
5. 根据权利要求 1所述的盲转业务方法, 其特征在于, 还包括以下步骤: 在用户 C建立起与用户 Α之间的媒体流连接后, 用户 B的应用 月良务器指示用户 B挂机, 终止用户 A与用户 B原先建立的通话。
9
替换页(细则第 26条)
6. 一种盲转业务装置, 其特征在于, 包括:
第一模块, 用于用户 A与用户 B首先建立通话, 此时使用户 B 发起呼叫转接请求, 要求将其与用户 A的通话转接至用户 C;
第二模块, 用于使用户 B 的应用服务器拦截此请求, 向用户 B 返回接受响应;
第三模块, 用于使用户 B的应用服务器首先向用户 C发起呼叫 邀请, 获取用户 C的媒体参数信息;
第四模块, 用于使用户 B的应用服务器向用户 A发起重新呼叫 邀请, 提供用户 C的媒体参数信息, 指示用户 A进行媒体切换, 并获 取用户 A的媒体参数信息; 以及
第五模块, 用于使用户 B的应用服务器向用户 C提供用户 A的 媒体参数信息, 指示用户 C建立起与用户 A之间的媒体流连接。
7. 根据权利要求 6所述的盲转业务装置, 其特征在于, 还包括: 第七模 块, 用于使用户 B在发起呼叫转接请求前, 先发起呼叫保持, 暂时中 断用户 A与用户 B之间的媒体流。
8. 根据权利要求 6所述的盲转业务装置, 其特征在于, 还包括: 第八模 块,用于使用户 B的应用服务器在用户 C建立起与用户 A之间的媒体 流连接后, 向用户 B通^艮用户 A与用户 C已成功建立通话。
9. 根据权利要求 6所述的盲转业务装置, 其特征在于, 所述第二模块还 用于使用户 B的应用服务器根据用户 B的业务注册信息判断用户 B是 否具有发起呼叫转接的权限, 若用户 B没有权限, 则应用服务器向用 户 B返回 4巨色响应。
10. 根据权利要求 6所述的盲转业务装置, 其特征在于, 还包括:
第六模块, 用于在用户 C建立起与用户 A之间的媒体流连接后, 使用户 B的应用服务器指示用户 B挂机, 终止用户 A与用户 B原先 建立的通话。
10
替换页(细则第 26条)
PCT/CN2007/003537 2007-01-05 2007-12-11 Procédé et dispositif pour service de transfert aveugle WO2008086688A1 (fr)

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