WO2010045812A1 - 一种通话切换的方法、装置和系统 - Google Patents

一种通话切换的方法、装置和系统 Download PDF

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Publication number
WO2010045812A1
WO2010045812A1 PCT/CN2009/073063 CN2009073063W WO2010045812A1 WO 2010045812 A1 WO2010045812 A1 WO 2010045812A1 CN 2009073063 W CN2009073063 W CN 2009073063W WO 2010045812 A1 WO2010045812 A1 WO 2010045812A1
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Prior art keywords
terminal
call
switching
bound
service data
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PCT/CN2009/073063
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English (en)
French (fr)
Inventor
李华
孙明
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to EP09821533A priority Critical patent/EP2352331A4/en
Publication of WO2010045812A1 publication Critical patent/WO2010045812A1/zh
Anticipated expiration legal-status Critical
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    • 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
    • H04MTELEPHONIC COMMUNICATION
    • H04M3/00Automatic or semi-automatic exchanges
    • H04M3/38Graded-service arrangements, i.e. some subscribers prevented from establishing certain connections
    • H04M3/382Graded-service arrangements, i.e. some subscribers prevented from establishing certain connections using authorisation codes or passwords
    • 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 embodiments of the present invention relate to the field of communications, and in particular, to a method, device, and system for call handover. Background technique
  • the call switching service is a service in which one of the users switches the call to the third party during the conversation between the two users, and the third party continues the call with the other party.
  • the call switching is performed by using an explicit call transfer (Expressive Call Transfer, hereinafter referred to as ECT).
  • ECT Expressive Call Transfer
  • the specific process is that during the conversation between two users, one user taps the fork, triggers the call transfer service, and holds the other user. The other party listens to the call to hold the tone, and then calls the third party number. After the third party rings or picks up the phone, the service trigger party exits the call, and the third party communicates with the other party user, that is, the call switching process is completed.
  • terminal A During the call between terminal A and terminal B, terminal A slaps the fork, holds terminal B, terminal B listens to the hold tone, terminal A calls terminal C, and after terminal C rings or picks up the phone, terminal A quits the call and implements the terminal. C and terminal B's call.
  • a method for call switching the method comprising:
  • a device for call switching comprising:
  • a receiving module configured to receive dialing information sent by a terminal that has subscribed to the call switching service, where the dialing information includes an access code, and the terminal is in a call with another terminal;
  • the call switching module is configured to switch the call of the terminal to the terminal corresponding to the dialing information according to the access code received by the receiving module.
  • a system for call switching comprising: a device for switching between a terminal and a call;
  • the terminal is configured to send dialing information to the device for switching the call, where the dialing information includes an access code, and the terminal is in a call with another terminal;
  • the call switching device is configured to switch the call of the terminal to the terminal corresponding to the dialing information according to the access code.
  • the call By receiving the dialing information, the call is switched to the terminal corresponding to the dialing information, so that the call switching is completed without interrupting the call, and the user's calling experience is good.
  • FIG. 1 is a flowchart of a method for call handover provided by a first embodiment of the present invention
  • FIG. 2 is a schematic diagram of a network architecture for implementing call handover based on IMS according to the first embodiment of the present invention
  • FIG. 3 is an interaction diagram of a method for call handover according to the first embodiment of the present invention
  • FIG. 4 is a schematic structural diagram of a device for call switching according to a second embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of a system for call switching according to a third embodiment of the present invention. detailed description
  • FIG. 1 is a flowchart of a method for call handover according to a first embodiment of the present invention. Referring to FIG. 1, this embodiment provides a method for call switching, including:
  • the terminal that has subscribed to the call handover service directly dials the access code in the process of talking with another terminal, that is, sends the dialing information including the access code, and implements another terminal and the third party.
  • the call of the terminal therefore, the call switching can be completed without interrupting the call, so that the user's call experience is good.
  • the method for call handover provided by this embodiment may be specifically applied to an Internet Protocol Multimedia Subsystem (IMS), a Public Switched Telephone Network (PSTN) or a public land mobile system.
  • IMS Internet Protocol Multimedia Subsystem
  • PSTN Public Switched Telephone Network
  • PLMN Public Land Mobile Network
  • IMS Internet Protocol Multimedia Subsystem
  • PLMN Public Land Mobile Network
  • FIG. 2 is a schematic diagram of a network architecture for implementing call handover based on IMS according to the first embodiment of the present invention.
  • GsmSCF Global System for Mobile Communications Service Control Function
  • Anchor AS Anchor Application Server
  • GSM Global System for Mobile Communications
  • CAMEL Customized Application for Mobile Network Enhanced Logic
  • the Anchor AS is connected to the Call Session Control Function (CSCF) through the Internet Service Control (ISC) interface. among them,
  • the CSCF is the core network element in the IMS and is responsible for the service triggering of the call handover service.
  • the CSCF is connected to the Voice over Broad Band (VOBB) and the soft terminal through the Session Border Controller (SBC).
  • VOBB Voice over Broad Band
  • SBC Session Border Controller
  • IAD access device
  • POTS Plain Old Telephone Service
  • the media gateway control function (Media Gateway Control Function, hereinafter referred to as MGCF) is also the core network element of the IMS. It is responsible for interworking with the existing network devices.
  • the mobile network users and the existing network fixed users are connected to the IMS through the CSCF and fixed.
  • the network is connected to terminals such as POTS to provide call switching services for existing network users.
  • the current network includes GSM, Universal Mobile Telecommunications System (UMTS), Code-Division Multiple Access (CDMA) or Time Division Code Multiple Access (Time Division Code- Division Multiple Access, hereinafter referred to as: TDCDMA).
  • the call management application server (Application Server, hereinafter referred to as AS) is the core control network element on the network side, which is used to implement functions such as registration, authentication, call control, service triggering, and accounting.
  • AS Application Server
  • the call handover AS is mainly used to implement the call handover service provided by the embodiment of the present invention.
  • the data center is used to store the user data and the service data of the call handover. Specifically, it may be a Home Subscriber Service (hereinafter referred to as HSS) in the IMS, or may be a database built into the call handover AS.
  • HSS Home Subscriber Service
  • the object of the call handover service in this embodiment may be a mobile subscriber of the existing network, a fixed subscriber of the existing network, and an IMS subscriber.
  • the terminal involved in the call handover service may be a mobile phone, a fixed line, and a soft terminal. terminal.
  • the call handover service data is sent to the call handover AS;
  • the user can subscribe to the call switching service of the operator through the operator's portal or short message; then, the operator's business operation support system (BOSS) uses the service issuing gateway to user
  • BOSS business operation support system
  • the subscribed call handover service data is registered to the call handover AS, and the call handover AS ⁇ "call handover service data, and the call can also switch the service data to the data center.
  • the call handover service data includes: an identifier of the terminal, such as an Internet Protocol Multimedia Public User Identity (MPU); and the service data set by the user may include: One or more of the history of ", "two-way binding", "whether three-party” and “three-party duration", for example: the call switching service data can be the number of the binding terminal of the terminal; or Whether to enter the three parties; or whether the number of the bound terminal of the terminal is bound in both directions; or whether i is the duration of the three-party and three-party; or the number of the terminal bound to the terminal and whether it is 3 ⁇ 4 or three parties; or the binding terminal of the terminal Whether the number, whether it is bidirectionally bound, and whether it enters the three parties; or the number of the terminal bound to the terminal, whether it is 3 ⁇ 4 and the duration of the three parties; or the number of the terminal bound to the terminal, whether it is bound in both directions, whether it enters the three-way and three-way Duration; the markup form of the parameter is not limited, for example
  • BMPU, BOTH, 3PTY and 3PTYT are marked; the name and meaning of each history is accompanied by J3 ⁇ 4 1.
  • the operator's own IMPU supports SIP URI and TEL URI. This field is mandatory.
  • Bind the user number you can bind multiple user numbers, or you can not enter, lack of binding
  • the BIMPU province is empty. It should be noted that the bound user may not be an IMS user, and the user can only bind in one direction.
  • User registration service can choose whether to bind in both directions, if yes, at the same time, whether it is double
  • the three parties hold that the call is successfully switched, and the user is automatically released after entering the three parties.
  • bind user is used to set the number of the bound user, and can bind multiple user numbers. It can also be left unentered. The default is empty, indicating no bound users.
  • the bound user can be not an IMS user, and can only be bound in one direction at this time.
  • Whether to enter the three parties indicates whether the three-party call is entered after the call is successfully switched. The default is to enter the three parties. If the three parties do not enter the network, the network side actively releases the call of the switcher.
  • Three-party duration means that the call is successfully switched, and after entering the three-party automatic release, the time for switching the user (that is, the switcher) is initiated. The default is empty, indicating that it is not dry.
  • FIG. 3 is an interaction diagram of a method for call handover according to the first embodiment of the present invention. Based on the scenario set above, referring to Figure 3, the process of call switching is as follows:
  • Terminal A and terminal B are in a call, and terminal A is ready to initiate a call handover.
  • the user dials directly on the terminal A to perform call switching, and the dialing information passes the in-band dual tone multi-frequency in the original media channel (Dual Tone Multi) -Frequency, hereinafter referred to as: DTMF)
  • DTMF Dual Tone Multi
  • the dialing information may be an access code of the call switching service, or may be an access code of the call switching service and a third party number (ie, a number of the pre-switched terminal); when the call service data signed by the terminal A is bound When the user is in the user, the user can directly dial the access code to initiate a call to the bound user; When there is no binding user in the signed call service data, the access code + third party number can be dialed to initiate a call to the third party number.
  • a third party number ie, a number of the pre-switched terminal
  • the access code is a service code published by the operator for the user who subscribes to the call switching service, that is, when the user dials the access code, the call switching service is triggered, and the access code can be configured, for example, the access code can be set to * 17#.
  • the access network element involved in this step may be an MGCF or a session initiation protocol.
  • SIP Session Initiated Protocol
  • AG Entity gateway
  • the access network element After detecting the inband DTMF signal, the access network element reports the dialing information of the user to the AS. Specifically, the dialing information may be sent by using an INFO message, or may be sent by other means. 203.
  • the AS After receiving the dialing information of the user, the AS analyzes the dialing information of the user. If the dialing information includes the access code of the call switching service, the AS checks whether the user has a subscription call switching service. If not, returns a failure message; otherwise, checks the dialing. Whether there is only an access code in the message. If yes, check whether there is a binding user in the call switching service data subscribed by the user.
  • the bound user or the third party number corresponds to the terminal C in this step, that is, the call is initiated to the terminal C.
  • the AS initiates a call to C by using an INVITE message in the SIP protocol
  • 203b) after receiving the INVITE message the C returns a 180 (ringing) message to the AS, 200 (off-hook) message
  • terminal A when terminal A is bound to terminal C, if two-way binding is selected, terminal A and terminal C can switch to each other, that is, terminal C can switch back to terminal A.
  • the service data of the call signed by the A is switched to the three parties. If not, the network side releases the call of A, and the call between B and C is realized; if yes, the media resource is needed.
  • Function Multimedia Resource Function, MRF for short
  • MRF Multimedia Resource Function
  • the entity applies for conference resources, and adds B, C, and calls to the three-party call.
  • 204a) The AS sends an INVITE message to the MRF, where the message carries a Session Description Protocol (SDP) a, SDPb, SDPc and other parameters, and represents media information of the terminals A, B, and C, respectively;
  • SDP Session Description Protocol
  • the MRF returns a 200 message to the AS, where the message carries parameters such as MRFa, MRFb, MRFc, and the media corresponding to the conference endpoint allocated by the MRF to the terminals A, B, and C respectively;
  • the AS returns a confirmation message to the MRF, and then,
  • the AS sends a relNVITE message to A, B, and C respectively, and the message carries respective MRFa, MRFb, and MRFc parameters;
  • the relNVITE messages are transmitted to the terminals A, B, and C through the respective access network elements; if the terminals A, B, and C are ordinary terminals, such as POTS, The relNVITE message is passed to the respective access network element.
  • A, B, and C respectively return 200 messages to the AS, and the messages carry their respective SDPa, SDPb, and SDPc parameters.
  • the MRF and the media renegotiation between the terminals are completed, and the three-party call flow is completed.
  • the specific media negotiation method is not limited, as long as it can comply with the media negotiation principle of the SIP protocol.
  • A can hang up to implement call switching, or can be set according to the parameters of the three-party duration of the subscription. After the duration is reached, the AS actively releases the call of A to implement call switching, during the entire handover process, and B. The call has not been interrupted.
  • the process of switching to C is completed without interrupting the A and B calls, and the user's call experience is good; and the handover is completed without interrupting the A and B calls, and the solution is resolved.
  • the user of the other party listens to the call to keep the tone, and the user's service experience is better.
  • the pre-switching party terminal C
  • the network side or the terminal itself terminal A releases the call, which ensures that the call is successfully switched, and effectively solves the problem that the call cannot be established due to media negotiation failure when the service party exits in the prior art.
  • FIG. 4 is a schematic structural diagram of an apparatus for call switching according to a second embodiment of the present invention.
  • the embodiment provides a device for switching a call, including:
  • the receiving module 401 is configured to receive dialing information sent by a terminal that has subscribed to the call switching service, where the dialing information includes an access code, and the terminal is in a call with another terminal;
  • the call switching module 402 is configured to switch the call of the terminal to the terminal corresponding to the dialing information according to the access code received by the receiving module 401.
  • the receiving module 401 is further configured to receive call switching service data that is subscribed by the terminal, where the call switching service data includes an identifier of the terminal, such as: an Internet Protocol Multimedia Public User Identity (IPU).
  • IPU Internet Protocol Multimedia Public User Identity
  • the call handover service data received by the receiving module 401 further includes the number of the bound terminal of the terminal; or whether it enters the three parties;
  • the call switching module 402 is specifically configured to switch the call of the terminal to the number according to the access code received by the receiving module 401.
  • the call switching module 402 is specifically configured to switch the call of the terminal to the number according to the access code received by the receiving module 401.
  • the call switching module 402 is specifically configured to: according to the access code received by the receiving module 401, if the two-way binding is performed, the terminal and the binding terminal switch between each other during a call;
  • the call switching service data received by the receiving module 401 includes whether to enter the three parties.
  • the call switching module 402 is specifically configured to be used according to the access code received by the receiving module 401. If the access is entered into the three parties, the terminal corresponding to the dialing information is added to the call between the terminal and the other terminal.
  • the call switching module 402 is specifically configured to: according to the access code received by the receiving module 401, if the three-party duration is reached, the terminal is released, and the terminal corresponding to the dialing information continues to talk with the other terminal.
  • the dialing information received by the receiving module 401 further includes a number of the pre-switching terminal
  • the call switching module 402 is specifically configured to switch the call of the terminal to the pre-switching terminal corresponding to the number.
  • the device for the call switching provided in this embodiment is the same as the call switching application server in the method embodiment.
  • the device for call switching provided by the embodiment can complete the call switching without interrupting the call, and the user has a good call experience, and can also ensure the successful call switching and avoid the problem that the dialing is easy to make mistakes. Moreover, the handover is completed without interrupting the call, and the problem that the counterpart user listens to the call hold tone in the prior art is solved, and the user's service experience is better.
  • FIG. 5 is a schematic structural diagram of a system for call switching according to a third embodiment of the present invention.
  • the embodiment provides a call switching system, including: a terminal 501 and a call switching device 502.
  • the terminal 501 is configured to send dialing information to the call switching device 502, where the dialing information includes accessing. Code, the terminal 501 is in a call with another terminal;
  • the call switching device 502 is configured to switch the call of the terminal 501 to the terminal corresponding to the dialing information according to the access code.
  • the terminal 501 is further configured to send the subscribed call handover service data to the call switching device 502, where the call handover service data includes an identifier of the terminal 501;
  • the call switching device 502 is further configured to receive the call handover service data sent by the terminal 501. Further,
  • the terminal 501 sends the subscribed call handover service data to the call handover device 502, and further includes the number of the bound terminal of the terminal 501;
  • the number of the bound terminal of the terminal 501 whether it is bidirectionally bound and whether it enters the three parties; or the number of the bound terminal of the terminal 501, whether it enters the three-party and three-party duration; or the number of the bound terminal of the terminal 501, Whether it is bound in both directions, whether it enters the three-way and three-party duration.
  • the terminal 501 sends the subscribed call handover service data to the call handover device 502, including the number of the binding terminal of the terminal 501,
  • the call switching device 502 is specifically configured to receive the call switching service data sent by the terminal 501, and switch the call of the terminal 501 to the binding terminal corresponding to the number;
  • the call switching device 502 is specifically configured to receive the call handover service data sent by the terminal 501. If the two-way binding is performed, the terminal 501 and the binding terminal switch between each other during a call;
  • the terminal 501 sends the subscribed call handover service data to the call switching device 502, including whether to enter the three parties,
  • the call switching device 502 is specifically configured to receive the call handover service data sent by the terminal 501, and if the user enters the three parties, the terminal corresponding to the dialing information joins the call between the terminal 501 and the other terminal;
  • the terminal 501 sends the subscribed call handover service data to the call handover device 502, including the three-party duration,
  • the call switching device 502 is specifically configured to receive the call switching service data sent by the terminal 501. If the set three-way duration is reached, the terminal 501 is placed, and the terminal corresponding to the dialing information continues to talk with the other terminal.
  • the dialing information sent by the terminal 501 to the device 502 for switching the call further includes a number of the pre-switched terminal;
  • the call switching device 502 is specifically configured to switch the call of the terminal 501 to the pre-switching terminal corresponding to the number according to the access code.
  • the call switching system provided in this embodiment has the same concept as the terminal A and the call switching application server in the method embodiment, and the specific implementation process is not described in the method embodiment. Narration.
  • the call switching system provided in this embodiment can complete the call switching without interrupting the call, and the user has a good call experience, and can also ensure the successful call switching and avoid the problem that the dialing is easy to make mistakes. Moreover, the handover is completed without interrupting the call, and the problem that the counterpart user listens to the call hold tone in the prior art is solved, and the user's service experience is better.
  • All or part of the technical solutions provided by the above embodiments may be implemented by software programming, and the software program is stored in a readable storage medium such as a hard disk, a optical disk or a floppy disk in a computer.

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Description

一种通话切换的方法、 装置和系统
本申请要求于 2008 年 10 月 24 日提交中国专利局、 申请号为 200810172952.6、 发明名称为"一种通话切换的方法、 装置和系统"的中国专利申 请的优先权, 其全部内容通过引用结合在本申请中。 技术领域
本发明实施例涉及通信领域, 特别涉及一种通话切换的方法、 装置和系统。 背景技术
在固定和移动融合的背景下, 固网运营商、 移动运营商和综合运营商都在 积极探索新的业务模式, 通话切换业务就是其中之一。
通话切换业务, 是在两个用户通话过程中, 其中一方用户将呼叫切换到第 三方, 由第三方与另一方用户继续通话的业务。
现有技术是使用显示呼叫转移 ( Explicit Call Transfer, 以下简称: ECT )完 成通话切换的, 具体过程为在两方用户通话过程中, 一方用户拍叉, 触发呼叫 转移业务, 将另一方用户保持住, 使对方听呼叫保持音, 然后呼叫第三方号码, 第三方振铃或者摘机后, 业务触发方退出通话, 实现第三方与该另一方用户的 通话, 即完成呼叫的切换过程。 例如: 终端 A与终端 B通话过程中, 终端 A拍 叉, 将终端 B保持住, 终端 B听保持音, 终端 A呼叫终端 C, 终端 C振铃或摘 机后, 终端 A退出通话, 实现终端 C与终端 B的通话。
在实现本发明的过程中, 发明人发现现有技术至少存在以下问题: 触发呼叫转移业务后, 通话会中断, 用户体验比较差。 发明内容
为了在不中断通话的前提下完成通话切换, 本发明实施例提供了一种通话 切换的方法、 装置和系统。 所述技术方案如下: 一种通话切换的方法, 所述方法包括:
接收已签约通话切换业务的终端发送的拨号信息, 所述拨号信息包括接入 码, 所述终端与另一终端正在通话中;
根据所述接入码, 将所述终端的通话切换到所述拨号信息对应的终端。 一种通话切换的装置, 所述装置包括:
接收模块, 用于接收已签约通话切换业务的终端发送的拨号信息, 所述拨 号信息包括接入码, 所述终端与另一终端正在通话中;
通话切换模块, 用于根据所述接收模块接收的接入码, 将所述终端的通话 切换到所述拨号信息对应的终端。
一种通话切换的系统, 所述系统包括: 终端和通话切换的装置;
所述终端, 用于向所述通话切换的装置发送拨号信息, 所述拨号信息包括 接入码, 所述终端与另一终端正在通话中;
所述通话切换的装置, 用于才艮据所述接入码, 将所述终端的通话切换到所 述拨号信息对应的终端。
本发明实施例提供的技术方案的有益效果是:
通过接收拨号信息, 将通话切换到拨号信息对应的终端, 实现了在不中断 通话的前提下完成通话切换, 用户通话体验好。 附图说明
图 1是本发明第一实施例提供的通话切换的方法流程图;
图 2是本发明第一实施例提供的基于 IMS实现通话切换的网络架构示意图; 图 3是本发明第一实施例提供的通话切换的方法交互图;
图 4是本发明第二实施例提供的通话切换的装置结构示意图;
图 5是本发明第三实施例提供的通话切换的系统结构示意图。 具体实施方式
为使本发明的目的、 技术方案和优点更加清楚, 下面将结合附图对本发明 实施方式作进一步地详细描述。
第一实施例
图 1是本发明第一实施例提供的通话切换的方法流程图。 参见图 1 , 本实施 例提供了一种通话切换的方法, 包括:
101、 接收已签约通话切换业务的终端发送的拨号信息, 该拨号信息包括接 入码, 该终端与另一终端正在通话中;
102、 根据该接入码, 将该终端的通话切换到该拨号信息对应的终端。
本实施例提供的通话切换的方法, 已签约通话切换业务的终端在与另一终 端通话的过程中, 直接拨打接入码, 即发送包括接入码的拨号信息, 实现另一 终端与第三方终端的通话, 因此, 能够在不中断通话的前提下完成通话切换, 使得用户通话体验好。
本实施例提供的通话切换的方法, 具体可以应用于网际协议多媒体子系统 ( Internet Protocol Multimedia Subsystem, 以下简称: IMS ) , 公共交换电话网 络(Public Switched Telephone Network, 以下简称: PSTN )或公众陆地移动电 话网( Public Land Mobile Network, 以下简称: PLMN )等通信系统。 下面以 IMS 为例, 详细说明通话切换的过程, 其它通信系统与 IMS类似, 这里不再赘述。
图 2是本发明第一实施例提供的基于 IMS实现通话切换的网络架构示意图。 参见图 2 所示, 全球移动通讯系统业务控制功能 (Global System for Mobile Communications Service Control Function , 以下简称: gsmSCF)和苗定 ϋ良务器 ( Anchor Application Server, 以下简称: Anchor AS ) , 用于将现网用户的呼叫 锚定到 IMS系统, 以便于使用 IMS系统提供的通话切换业务。 其中,
gsmSCF 通过移动网络增强逻辑的客户化应用 (Customized Application for Mobile Network Enhanced Logic , 以下简称: CAMEL)接口与全球移动通讯系统 ( Global System for Mobile Communications, 以下简称: GSM )网络相连, GSM 网络为各种移动终端 , 如手机等服务;
Anchor AS通过因特网业务控制 ( Internal Service Control, 以下简称: ISC ) 接口与呼叫会话控制功能 ( Call Session Control Function, 以下简称: CSCF )相 连。 其中,
CSCF是 IMS中的核心网元, 负责通话切换业务的业务触发。 CSCF通过会 话边界控制器( Session Border Controller, 以下筒称: SBC )与宽带语音( Voice over Broad Band, 以下简称: VOBB ) 和软终端相连, SBC通过综合接入设备 ( Integrated Access Device, 以下简称: IAD ) 与普通老式电话服务 ( Plain Old Telephone Service, 以下筒称: POTS )相连。
媒体网关控制功能( Media Gateway Control Function , 以下简称: MGCF ) 也是 IMS的核心网元, 负责与现网设备的互通, 将现网移动用户、 现网固定用 户通过 CSCF接入到 IMS, 并通过固定网与 POTS等终端连接, 以便为现网用户 提供通话切换业务。其中,现网包括 GSM、通用移动通信系统( Universal Mobile Telecommunications System , 以下简称: UMTS ) 、 码分多址 ( Code-Division Multiple Access , 以下简称: CDMA ) 或时分码分多址 ( Time Division Code-Division Multiple Access, 以下简称: TDCDMA ) 等系统。
通话切换应用服务器( Application Server, 以下简称: AS )是网络侧的核心 控制网元, 用于实现注册、 鉴权、 呼叫控制、 业务触发、 计费等功能。 在本实 施例中, 通话切换 AS主要用于实现本发明实施例提供的通话切换业务。
数据中心, 用于存储通话切换的用户数据和业务数据, 具体地, 可以是 IMS 中的网元归属用户服务器 (Home Subscriber Service, 以下简称: HSS ) , 也可 以是通话切换 AS内置的数据库。
由以上网络架构的描述可知, 本实施例的通话切换业务服务的对象可以是 现网移动用户、 现网固定用户和 IMS用户, 相应地, 通话切换业务涉及的终端 可以是手机、 固话和软终端。
基于上述网络架构, 用户需要签约通话切换业务时, 将所持终端签约的通 话切换业务数据发送给通话切换 AS;
具体地,用户可以通过运营商的门户网站或短信等方式,签约运营商的通话切换 业务; 然后, 运营商的业务运营支持系统(Business Operation Support System, 以下 简称: BOSS )通过业务发放网关将用户签约的通话切换业务数据登记到通话切换 AS, 通话切换 AS ^"通话切换业务数据, 也可以将通话切换业务数据 到数据中心。
进一步地, 通话切换业务数据包括: 终端的标识, 如网际协议多某体公共标识 ( Internet Protocol Multimedia Public User Identity, 以下简称: MPU ); 根据用户设置的 业务数据, 可以包括: "绑^]户" 、 "是否双向绑定" 、 "是否fT三方" 和 "三方 持续时长"等^!史中的一种或多种, 例如: 通话切换业务数据可以包 亥终端的绑定终 端的号码; 或者是否进入三方; 或者该终端的绑定终端的号码和是否双向绑定; 或者是 否i 三方和三方持续时长; 或者该终端的绑定终端的号码和是否 ¾ 三方; 或者该终 端的绑定终端的号码、 是否双向绑定和是否进入三方; 或者该终端的绑定终端的号码、 是否 ¾ 三方和三方持续时长; 或者该终端的绑定终端的号码、是否双向绑定、是否进 入三方和三方持续时长; 参数的标记形式不限, 例如对上述参数可分別以 PU、
BMPU、 BOTH, 3PTY和 3PTYT加以标记; 各 史的名称及意义伴 J¾ 1。
表 1
标识 名称 参数描述
业务方自己的 IMPU, 支持 SIP URI和 TEL URI , 该字段为必
IMPU IMPU
选项
绑定用户号码, 可以绑定多个用户号码, 也可以不输入, 缺 绑定用
BIMPU 省为空。 需要说明的是, 绑定用户可以不是 IMS用户, 此时 户 只能单向绑定
用户登记业务是可以选择是否双向绑定, 如果为是, 同时更 是否双
BOTH 新业务方和绑定用户的业务数据, 如果为否, 仅更新业务方 向绑定
数据。 缺省值为否
表示通话切换成功后是否进入三方通话, 缺省为进入三方, 是否进
3PTY 如果不进入三方, 当切换目的方应答后, 切换方 ATS主动释 入三方
三方持 表示通话切换成功, 且进入三方后自动释放发起切换用户的
3PTYT
续时长 时间, 缺省为空, 表示不释放
其 "绑定用户" , 用于设置绑定用户的号码, 可以绑定多个用户号码, 也可以不输入, 缺省为空, 表示无绑定用户。 绑定用户可以不是 IMS用户, 此 时只能单向绑定。
"是否双向绑定" , 如果为是, 同时更新本用户和绑定用户的业务数据; 如 果为否, 仅更新本用户的业务数据。 缺省值为否。 具体地, 若是双向绑定, 将本 用户的 "绑定用户"参数设置为绑定用户的号码, 将 "是否双向绑定"设置为是, 将绑定用户的 "绑定用户" 参数设置为本用户的号码, 同时, 将 "是否双向绑定" 设置为是; 若不是双向绑定, 将本用户的 "绑定用户" 参数设置为绑定用户的号 码(没有绑定用户的话, 此参数为空) , 将 "是否双向绑定" 设置为否。
"是否进入三方" , 表示通话切换成功后是否进入三方通话, 缺省为进入 三方, 如果不进入三方, 当切换目的方应答后, 网络侧主动释放切换方的呼叫。
"三方持续时长" , 表示通话切换成功, 且进入三方后自动#放发起切换 用户 (即切换方) 的时间, 缺省为空, 表示不幹放。
用户签约通话切换业务后, 就可以在通话中进行切换。 下面, 设一用户所 持终端 A签约了通话切换业务, 且该用户以所持终端 A与另一用户所持终端 B 正在通话, 现该用户预将通话从终端 A切换到终端 C, 以该场景为例说明通话 切换业务的实现过程。 其中, 终端 C可以与终端 A属于同一用户, 例如: 同一 用户的手机和固话之间的切换, 终端 C也可以属于与终端 A和终端 B不同的第 三方用户。 图 3 是本发明第一实施例提供的通话切换的方法交互图。 基于上述 设定的场景, 参见图 3, 通话切换的过程如下:
201、 终端 A与终端 B正在通话中 , 终端 A准备发起通话切换, 此时用户 直接在所持终端 A上拨号进行通话切换, 拨号信息在原有媒体通道中通过带内 双音多频 (Dual Tone Multi-Frequency, 以下简称: DTMF ) 方式传送给接入网 元, 此时 A与 B的通话不会中断。
进一步地, 拨号信息可以是通话切换业务的接入码, 还可以是通话切换业 务的接入码和第三方号码 (即预切换终端的号码) ; 当终端 A签约的通话业务 数据中有绑定用户时, 可以直接拨号接入码发起对绑定用户的呼叫; 当用户 A 签约的通话业务数据中没有绑定用户时, 可以拨接入码 +第三方号码, 发起对第 三方号码的呼叫。 另外, 接入码是运营商为签约通话切换业务的用户公布的服 务码, 即用户拨打此接入码时, 就会触发通话切换业务, 接入码可以配置, 如 可以将接入码设置成 * 17#。
进一步地, 本步骤所涉及的接入网元可以是 MGCF 或会话发起协议
(Session Initiated Protocol, 以下简称: SIP)接入网关 (Access Gate, 以下简称: AG ) 等实体。
202、 接入网元检测到带内 DTMF信号后, 将用户的拨号信息上报给 AS。 具体地,可以釆用 INFO消息方式发送拨号信息,也可以釆用其它方式发送。 203、 AS 收到用户的拨号信息后, 分析用户的拨号信息, 如果拨号信息中 包括通话切换业务的接入码, 检查用户是否有签约通话切换业务, 若没有, 返 回失败消息; 否则, 检查拨号信息中是否只有接入码, 若是, 检查用户签约的 通话切换业务数据中是否有绑定用户, 若没有, 返回失败消息, 若有, 对绑定 用户发起呼叫; 否则, 检查拨号信息是否包括接入码和第三方号码, 若是, 对 第三方号码发起呼叫, 否则, 返回失败消息。
具体地, 假设本步骤中绑定用户或第三方号码都对应终端 C, 即向终端 C 发起呼叫。 具体地, 203a ) AS采用 SIP协议中的 INVITE (邀诸) 消息向 C发 起呼叫, 203b ) C接收到 INVITE消息后, 向 AS返回 180 (振铃) 消息、 200 (摘机) 消息, 203c ) AS接收到摘机消息后, 向终端 C返回 ACK (确认) 消 息, 完成呼叫过程。
另外, 终端 A在绑定终端 C时, 若选择了双向绑定, 则终端 A与终端 C可 以相互切换, 即终端 C可以切换回终端 A。
204、终端 C用户摘机应答之后,根据 A签约的通话切换业务数据中的是否 进入三方, 若为否, 网络侧释放 A的呼叫, 实现 B与 C的通话; 若为是, 需要 到媒体资源功能( Multimedia Resource Function , 以下简称: MRF ) 实体申请会 议资源, 将 、 B、 C都加入通话, 进入三方通话, 具体地, 204a ) AS 向 MRF 发送 INVITE 消息, 消息携带会话描述协议 (Session Description Protocol, 以下简称: SDP ) a、 SDPb、 SDPc等参数, 分别表示终端 A、 B、 C的媒体信息;
204b ) MRF向 AS返回 200消息, 消息携带 MRFa、 MRFb、 MRFc等参数, 分别表示 MRF给终端 A、 B、 C分配的会议端点对应的媒体;
204c ) AS向 MRF返回确认消息, 然后,
204d ) AS分别向 A、 B、 C发送 relNVITE消息 , 消息携带各自的 MRFa、 MRFb、 MRFc参数;
进一步地, 若终端 A、 B、 C是 SIP终端, 则将 relNVITE消息通过各自的 接入网元传给终端 A、 B、 C;若终端 A、 B、 C是普通终端 ,如 POTS,则将 relNVITE 消息传给各自的接入网元。
204e ) A、 B、 C分别向 AS返回 200消息, 消息携带各自的 SDPa、 SDPb、 SDPc参数。
这样, 在 AS控制下, 完成了 MRF和各终端间的媒体重新协商, 完成三方 通话流程。 具体的媒体协商方式不限, 只要能符合 SIP 协议的媒体协商原则即 可。
205、 三方通话状态下, A可以挂机实现通话切换, 也可以根据签约时的三 方持续时长的参数设置, 达到时长后, 由 AS主动释放 A的呼叫实现通话切换, 整个切换的过程中, 与 B的通话一直没有中断。
经过步驟 201-205, 在不中断 A与 B通话的前提下, 完成了 A切换到 C的 过程, 用户的通话体验好; 而且在不中断 A与 B通话的前提下, 完成切换, 解 决了现有技术中对方用户听呼叫保持音的问题, 用户的业务体验比较好; 同时, 通过设定绑定用户, 避免了直接拨打第三方号码容易出错的问题; 另外, 预切 换方(终端 C )应答或进入三方通话后, 网络侧或终端自身 (终端 A )才释放呼 叫, 能够确保通话切换成功, 有效解决了现有技术中业务方退出时因媒体协商 失败而导致呼叫无法建立的问题。 第二实施例
图 4是本发明第二实施例提供的通话切换的装置结构示意图。 参见图 4, 本 实施例提供了一种通话切换的装置, 包括:
接收模块 401 , 用于接收已签约通话切换业务的终端发送的拨号信息, 该拨 号信息包括接入码, 该终端与另一终端正在通话中;
通话切换模块 402, 用于根据该接收模块 401接收的接入码, 将该终端的通 话切换到该拨号信息对应的终端。
进一步地,
该接收模块 401, 还用于接收该终端签约的通话切换业务数据, 该通话切换 业务数据包括该终端的标识,如: IMPU ( Internet Protocol Multimedia Public User Identity, 网际协议多媒体公共标识) 。
进一步地,
该接收模块 401接收的通话切换业务数据还包括该终端的绑定终端的号码; 或者是否进入三方;
或者该终端的绑定终端的号码和是否双向绑定;
或者是否进入三方和三方持续时长;
或者该终端的绑定终端的号码和是否进入三方;
或者该终端的绑定终端的号码、 是否双向绑定和是否进入三方;
或者该终端的绑定终端的号码、 是否进入三方和三方持续时长;
或者该终端的绑定终端的号码、 是否双向绑定、 是否进入三方和三方持续 时长。
具体地,
该接收模块 401接收的通话切换业务数据包括该终端的绑定终端的号码时, 该通话切换模块 402, 具体用于根据该接收模块 401接收的接入码, 将该终 端的通话切换到该号码对应的绑定终端;
该接收模块 401接收的通话切换业务数据包括是否双向绑定时, 该通话切换模块 402, 具体用于根据该接收模块 401接收的接入码, 若是双 向绑定, 该终端与该绑定终端在通话中相互切换;
该接收模块 401接收的通话切换业务数据包括是否进入三方时,
该通话切换模块 402, 具体用于根据该接收模块 401接收的接入码, 若是进 入三方, 该拨号信息对应的终端加入到该终端与该另一终端的通话中;
该接收模块 401接收的通话切换业务数据包括三方持续时长时,
该通话切换模块 402, 具体用于根据该接收模块 401接收的接入码, 若到达 设置的三方持续时长, 释放该终端, 该拨号信息对应的终端与该另一终端继续 通话。
进一步地,
该接收模块 401接收的拨号信息还包括预切换终端的号码;
该通话切换模块 402,具体用于将该终端的通话切换到该号码对应的预切换 终端。
本实施例提供的通话切换的装置, 与方法实施例中的通话切换应用服务器 属于同一构思, 其具体的实现过程详见方法实施例, 在此不再赘述。
本实施例提供的通话切换的装置, 能够在不中断通话的前提下完成通话切 换, 用户通话体验好, 同时还能够确保通话切换成功, 避免拨号易出错的问题。 而且在不中断通话的前提下, 完成切换, 解决了现有技术中对方用户听呼叫保 持音的问题, 用户的业务体验比较好。
第三实施例
图 5是本发明第三实施例提供的通话切换的系统结构示意图。 参见图 5 , 本 实施例提供了一种通话切换的系统, 包括: 终端 501和通话切换的装置 502; 该终端 501 , 用于向该通话切换的装置 502发送拨号信息, 该拨号信息包括 接入码, 该终端 501与另一终端正在通话中;
该通话切换的装置 502 , 用于根据该接入码, 将该终端 501的通话切换到该 拨号信息对应的终端。 进一步地,
该终端 501,还用于向该通话切换的装置 502发送签约的通话切换业务数据, 该通话切换业务数据包括该终端 501的标识;
该通话切换的装置 502, 还用于接收该终端 501发送的通话切换业务数据。 进一步地,
该终端 501 向该通话切换的装置 502发送签约的通话切换业务数据还包括 该终端 501的绑定终端的号码;
或者是否进入三方;
或者该终端 501的绑定终端的号码和是否双向绑定;
或者是否进入三方和三方持续时长;
或者该终端 501的绑定终端的号码和是否进入三方;
或者该终端 501的绑定终端的号码、 是否双向绑定和是否进入三方; 或者该终端 501的绑定终端的号码、 是否进入三方和三方持续时长; 或者该终端 501 的绑定终端的号码、 是否双向绑定、 是否进入三方和三方 持续时长。
具体地,
该终端 501 向该通话切换的装置 502发送签约的通话切换业务数据包括该 终端 501的绑定终端的号码时,
该通话切换的装置 502,具体用于接收该终端 501发送的通话切换业务数据, 将该终端 501的通话切换到该号码对应的绑定终端;
该终端 501 向该通话切换的装置 502发送签约的通话切换业务数据包括是 否双向绑定时,
该通话切换的装置 502,具体用于接收该终端 501发送的通话切换业务数据, 若是双向绑定, 该终端 501与该绑定终端在通话中相互切换;
该终端 501 向该通话切换的装置 502发送签约的通话切换业务数据包括是 否进入三方时, 该通话切换的装置 502,具体用于接收该终端 501发送的通话切换业务数据, 若是进入三方, 该拨号信息对应的终端加入到该终端 501 与该另一终端的通话 中;
该终端 501 向该通话切换的装置 502发送签约的通话切换业务数据包括三 方持续时长时,
该通话切换的装置 502,具体用于接收该终端 501发送的通话切换业务数据, 若到达设置的三方持续时长, 鋒放该终端 501 , 该拨号信息对应的终端与该另一 终端继续通话。
进一步地,
该终端 501 向该通话切换的装置 502发送的拨号信息还包括预切换终端的 号码;
该通话切换的装置 502, 具体用于根据该接入码, 将该终端 501的通话切换 到该号码对应的预切换终端。
本实施例提供的通话切换的系统, 其终端和通话切换的装置分别与方法实 施例中的终端 A和通话切换应用服务器属于同一构思, 其具体的实现过程详见 方法实施例, 在此不再赘述。
本实施例提供的通话切换的系统, 能够在不中断通话的前提下完成通话切 换, 用户通话体验好, 同时还能够确保通话切换成功, 避免拨号易出错的问题。 而且在不中断通话的前提下, 完成切换, 解决了现有技术中对方用户听呼叫保 持音的问题, 用户的业务体验比较好。
以上实施例提供的技术方案中的全部或部分内容可以通过软件编程实现, 其软件程序存储在可读取的存储介质中, 存储介质例如: 计算机中的硬盘、 光 盘或软盘。
以上所述仅为本发明的较佳实施例, 并不用以限制本发明, 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
1、 一种通话切换的方法, 其特征在于, 所述方法包括:
接收已签约通话切换业务的终端发送的拨号信息, 所述拨号信息包括接入 码, 所述终端与另一终端正在通话中;
根据所述接入码, 将所述终端的通话切换到所述拨号信息对应的终端。
2、 如权利要求 1所述的通话切换的方法, 其特征在于, 所述接收已签约通 话切换业务的终端发送的拨号信息之前包括:
接收所述终端签约的通话切换业务数据, 所述通话切换业务数据包括所述 终端的标识。
3、 如权利要求 2所述的通话切换的方法, 其特征在于, 所述通话切换业务 数据还包括所述终端的绑定终端的号码;
或者是否进入三方;
或者所述终端的绑定终端的号码和是否双向绑定;
或者是否进入三方和三方持续时长;
或者所述终端的绑定终端的号码和是否进入三方;
或者所述终端的绑定终端的号码、 是否双向绑定和是否进入三方; 或者所述终端的绑定终端的号码、 是否进入三方和三方持续时长; 或者所述终端的绑定终端的号码、 是否双向绑定、 是否进入三方和三方持 续时长。
4、 如权利要求 3所述的通话切换的方法, 其特征在于, 当所述通话切换业 务数据包括所述终端的绑定终端的号码时,
所述将所述终端的通话切换到所述拨号信息对应的终端包括: 将所述终端 的通话切换到所述号码对应的绑定终端;
当所述通话切换业务数据包括是否双向绑定时, 若是双向绑定, 所述终端 与所述绑定终端在通话中相互切换;
当所述通话切换业务数据包括是否进入三方时, 若是进入三方, 所述拨号 信息对应的终端加入到所述终端与所述另一终端的通话中;
当所述通话切换业务数据包括三方持续时长时, 若到达设置的三方持续时 长, 释放所述终端, 所述拨号信息对应的终端与所述另一终端继续通话。
5、 如权利要求 1所述的通话切换的方法, 其特征在于, 所述拨号信息还包 括预切换终端的号码;
所述拨号信息对应的终端是所述号码对应的预切换终端。
6、 一种通话切换的装置, 其特征在于, 所述装置包括:
接收模块, 用于接收已签约通话切换业务的终端发送的拨号信息, 所述拨 号信息包括接入码, 所述终端与另一终端正在通话中;
通话切换模块, 用于根据所述接收模块接收的接入码, 将所述终端的通话 切换到所述拨号信息对应的终端。
7、 如权利要求 6所述的通话切换的装置, 其特征在于, 所述接收模块, 还 用于接收所述终端签约的通话切换业务数据, 所述通话切换业务数据包括所述 终端的标识。
8、 如权利要求 7所述的通话切换的装置, 其特征在于, 所述接收模块接收 的通话切换业务数据还包括所述终端的绑定终端的号码;
或者是否进入三方;
或者所述终端的绑定终端的号码和是否双向绑定;
或者是否进入三方和三方持续时长;
或者所述终端的绑定终端的号码和是否进入三方;
或者所述终端的绑定终端的号码、 是否双向绑定和是否进入三方; 或者所述终端的绑定终端的号码、 是否进入三方和三方持续时长; 或者所述终端的绑定终端的号码、 是否双向绑定、 是否进入三方和三方持 续时长。
9、 如权利要求 8所述的通话切换的装置, 其特征在于, 所述接收模块接收 的通话切换业务数据包括所述终端的绑定终端的号码时, 所述通话切换模块, 具体用于根据所述接收模块接收的接入码, 将所述终 端的通话切换到所述号码对应的绑定终端;
所述接收模块接收的通话切换业务数据包括是否双向绑定时,
所述通话切换模块, 具体用于根据所述接收模块接收的接入码, 若是双向 绑定, 所述终端与所述绑定终端在通话中相互切换;
所述接收模块接收的通话切换业务数据包括是否进入三方时,
所述通话切换模块, 具体用于根据所述接收模块接收的接入码, 若是进入 三方, 所述拨号信息对应的终端加入到所述终端与所述另一终端的通话中; 所述接收模块接收的通话切换业务数据包括三方持续时长时,
所述通话切换模块, 具体用于根据所述接收模块接收的接入码, 若到达设 置的三方持续时长, 释放所述终端, 所述拨号信息对应的终端与所述另一终端 继续通话。
10、 如权利要求 6所述的通话切换的装置, 其特征在于, 所述接收模块接 收的拨号信息还包括预切换终端的号码;
所述通话切换模块, 具体用于将所述终端的通话切换到所述号码对应的预 切换终端。
11、 一种通话切换的系统, 其特征在于, 所述系统包括: 终端和通话切换 的装置;
所述终端, 用于向所述通话切换的装置发送拨号信息, 所述拨号信息包括 接入码, 所述终端与另一终端正在通话中;
所述通话切换的装置, 用于根据所述接入码, 将所述终端的通话切换到所 述拨号信息对应的终端。
12、 如权利要求 11所述的通话切换的系统, 其特征在于, 所述终端, 还用 于向所述通话切换的装置发送签约的通话切换业务数据, 所述通话切换业务数 据包括所述终端的标识;
所述通话切换的装置, 还用于接收所述终端发送的通话切换业务数据。
13、 如权利要求 12所述的通话切换的系统, 其特征在于, 所述终端向所述 通话切换的装置发送签约的通话切换业务数据还包括所述终端的绑定终端的号 码;
或者是否进入三方;
或者所述终端的绑定终端的号码和是否双向绑定;
或者是否进入三方和三方持续时长;
或者所述终端的绑定终端的号码和是否进入三方;
或者所述终端的绑定终端的号码、 是否双向绑定和是否进入三方; 或者所述终端的绑定终端的号码、 是否进入三方和三方持续时长; 或者所述终端的绑定终端的号码、 是否双向绑定、 是否进入三方和三方持 续时长。
14、 如权利要求 13所述的通话切换的系统, 其特征在于, 所述终端向所述 通话切换的装置发送签约的通话切换业务数据包括所述终端的绑定终端的号码 时,
所述通话切换的装置, 具体用于接收所述终端发送的通话切换业务数据, 将所述终端的通话切换到所述号码对应的绑定终端;
所述终端向所述通话切换的装置发送签约的通话切换业务数据包括是否双 向绑定时,
所述通话切换的装置, 具体用于接收所述终端发送的通话切换业务数据, 若是双向绑定, 所述终端与所述绑定终端在通话中相互切换;
所述终端向所述通话切换的装置发送签约的通话切换业务数据包括是否进 入三方时,
所述通话切换的装置, 具体用于接收所述终端发送的通话切换业务数据, 若是进入三方, 所述拨号信息对应的终端加入到所述终端与所述另一终端的通 话中;
所述终端向所述通话切换的装置发送签约的通话切换业务数据包括三方持 续时长时,
所述通话切换的装置, 具体用于接收所述终端发送的通话切换业务数据, 若到达设置的三方持续时长, 释放所述终端, 所述拨号信息对应的终端与所述 另一终端继续通话。
15、 如权利要求 11所述的通话切换的系统, 其特征在于, 所述终端向所述 通话切换的装置发送的拨号信息还包括预切换终端的号码;
所述通话切换的装置, 具体用于才艮据所述接入码, 将所述终端的通话切换 到所述号码对应的预切换终端。
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