WO2008092324A1 - Procédé, système et dispositif pour lire un cercle de couleurs groupées - Google Patents

Procédé, système et dispositif pour lire un cercle de couleurs groupées Download PDF

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Publication number
WO2008092324A1
WO2008092324A1 PCT/CN2007/003023 CN2007003023W WO2008092324A1 WO 2008092324 A1 WO2008092324 A1 WO 2008092324A1 CN 2007003023 W CN2007003023 W CN 2007003023W WO 2008092324 A1 WO2008092324 A1 WO 2008092324A1
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WO
WIPO (PCT)
Prior art keywords
service
entity
connection
destination terminal
terminal
Prior art date
Application number
PCT/CN2007/003023
Other languages
English (en)
French (fr)
Inventor
Guihua Li
Zhihong Sun
Yiqiang Bao
Zhibin Ren
Original Assignee
Huawei Technologies Co., Ltd.
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.)
Filing date
Publication date
Application filed by Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Priority to EP07816636.0A priority Critical patent/EP2109299B1/en
Publication of WO2008092324A1 publication Critical patent/WO2008092324A1/zh
Priority to US12/511,232 priority patent/US8149998B2/en
Priority to US13/301,523 priority patent/US8462916B2/en

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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
    • H04M3/42025Calling or Called party identification service
    • H04M3/42085Called party identification service
    • H04M3/42102Making use of the called party identifier
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M3/00Automatic or semi-automatic exchanges
    • H04M3/42Systems providing special services or facilities to subscribers
    • H04M3/42017Customized ring-back tones
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M3/00Automatic or semi-automatic exchanges
    • H04M3/42Systems providing special services or facilities to subscribers
    • H04M3/42314Systems providing special services or facilities to subscribers in private branch exchanges
    • H04M3/4234Remote access to features of PBX or home telephone systems-teleworking in a PBX

Definitions

  • the present invention relates to data transmission technologies in the field of communications, and in particular, to a method, system and apparatus for playing a group ring tones.
  • automatic transfer means that the calling user directly dials the constant number of the called user, and the system establishes a connection between the calling user and the called user according to the constant number;
  • the voice transfer is the calling user Through the voice system, the other identifiers of the called party, such as the name, are called, and the called number is queried by the system, and the voice connection is established.
  • the caller of the group is called by the group member to call the group outside the group, which can reduce the call of the enterprise employee. cost.
  • the Group's CRBT service is different from the current CRBT service. It can be a ring tone that the Group creates for internal users. It does not affect the use of personal ring tones within the Group. It can be customized by time, department and group.
  • the flow chart of the first method is shown in Figure 1.
  • the calling terminal is the terminal A
  • the called terminal is the terminal B, which is the terminal A.
  • the softswitch entity (SOFTX)/service switching point (SSP) providing the service is denoted as SOFTX/SSP(a)
  • SOFTX/SSP(b) The softswitch entity (SOFTX)/service switching point (SSP) providing the service.
  • Step 101 The terminal A sends a call request to the SOFTX/SSP (a), where the call request includes the phone number information of the terminal B, and the terminal B has applied for the group ring back tone service.
  • IDDP initial message
  • SCP service control point
  • Step 103 The SCP determines, according to the phone number information of the terminal B, that the terminal B has applied for the group ring back tone service, and sends a connection message (CONNECT) to the SOFTX/SSP (a), where the CONNECT includes the phone number information of the terminal B and Corresponding CRBT routing code.
  • CONNECT connection message
  • Step 104 If the SOFTX/SSP (a) receives the CONNECT message and determines that the message also includes the same ring tone ringing call identifier, it indicates that the implementation method of the group ring back tone utilizes the SSP simulating technology, then SOFTX/SSP ( a) Sending a start address message (IAM) to SOFTX/SSP (b), the IAM message including the telephone number information of the terminal B, requesting to establish a connection between the terminals A and B, and requesting to block the ring back tone of the terminal B. , then SOFTX/SSP (b) returns an address full (ACM) message to SOFTX/SSP (a) indicating that the connection was successfully established.
  • IAM start address message
  • ACM address full
  • SOFTX/SSP (a) sends an IAM message to the CRBT Enhanced Intelligent Peripheral (AIP), which contains the aforementioned CRBT routing code, establishes a connection with the CRBT AIP, and then the CRBT AIP returns to SOFTX/SSP (a).
  • ACM message terminal A hears the group ring tones played by ring tones.
  • Step 105 When terminal B picks up the phone and answers, it sends a response message (A Li) to SOFTX/SSP (b).
  • Step 106 After receiving the ANM message, the SOFTX/SSP (b) sends an IDP message to the SCP, and reports the terminal B off-hook event.
  • Step 107 After receiving the IDP message, the SCP sends a release message to SOFTX/SSP (a).
  • the color ring service and the switchboard service are respectively implemented by using different subsystems, so that when the group ring back tone service is started, the corresponding data must be stored in both subsystems, and data redundancy is added, and The method is also only applied in a wired communication network.
  • the existing second method for realizing the group ring tones is as shown in FIG. 2, and the same method is also set in the method.
  • the called terminal is terminal A
  • the called terminal is terminal B
  • the SSP/mobile service interaction center (MSC)/gate mobile switching center (GMSC) serving the terminal A is recorded as GMSC/MSC/SSP (a)
  • the GMSC/MSC/SSP providing the service is denoted as GMSC/MSC/SSP (b)
  • the method mainly comprises the following steps:
  • Step 201 The terminal A sends a call request to the GMSC/MSC/SSP (a), where the call request includes the telephone number of the terminal B, and the terminal B has applied for the group ring back tone service. If the terminal A is a fixed and other mobile network user, the GMSC queries the subscription information (T_CSI) of the terminal B in the home location register (HLR); if the terminal A is the user of the network, the MSC queries the HLR. The T-CSI information is output.
  • T_CSI subscription information
  • Step 202 The GMSC/MSC/SSP (a) sends an IDP message to the SCP to which the terminal B belongs according to the queried T-CSI information, where the IDP message includes the phone number information of the terminals A and B.
  • Step 203 The SCP sends a request to the GMSC/MSC/SSP (a) to configure a basic call state mode event (RRBE), so that the GMSC/MSC/SSP (a) reports the link connection status in real time.
  • a basic call state mode event RRBE
  • Step 204 The SCP sends a CONNECT message to the GMSC/MSC/SSP (a), instructing it to establish a connection to the CRBT AIP.
  • the CONNECT message includes the phone number of the terminal B and the CRBT routing code, if the terminals A and B are different.
  • the terminal in the network also includes the roaming number of the terminal B.
  • Step 205 The GMSC/MSC/SSP (a) routes the call request to the CRBT AIP after receiving the CONNECT message; the CRBT AIP connects the call to the GMSC/MSC/SSP (b); Finally, the GMSC/MSC/SSP (b) ) Connect the call to terminal B again.
  • Step 206 The CRBT AIP plays the CRBT to the terminal A according to the group ringtone customized by the called number, and shields the ringback tone played from the terminal B.
  • the switchboard ringtone AIP monitors the occurrence of the event, stops playing the switchboard CRBT, and terminals A and B can start the call.
  • the GMSC/MSC/SSP (a) and the ring back tone AIP are disconnected.
  • the trunk between the ring back tone AIP and the GMSC/MSC/SSP (a) is still occupied.
  • the embodiment of the invention provides a method, a system and a device for playing a group ring tones, in order to solve the problem in the prior art that when a ring tones are played, the data is backed up, the data is redundant, and a large number of relay channel resources are occupied, the method includes the following steps:
  • the service switching entity receives the call request sent by the source terminal and includes the group switchboard access code, and establishes a connection with the service access entity according to the group switchboard access code;
  • the service access entity receives the destination terminal service identifier sent by the source terminal, and searches for the destination terminal connection identifier corresponding to the destination terminal service identifier according to the correspondence between the destination terminal service identifier and the connection identifier, and sends the destination terminal connection identifier to the destination terminal Business exchange entity;
  • the service switching entity establishes a connection between the source terminal and the destination terminal according to the destination terminal connection identifier, and the service access entity plays the group ring back tone to the source terminal.
  • the embodiment of the present invention further provides a system for playing a group ring back tone, where the system includes a service switching entity and a service access entity, where
  • the service access entity includes:
  • a first receiving unit configured to receive a destination terminal service identifier sent by the source terminal
  • a searching unit configured to search for a connection identifier corresponding to the destination terminal service identifier according to the correspondence between the terminal service identifier and the connection identifier, and send the destination terminal connection identifier to the service switching entity;
  • a playing unit configured to play a group ring back tone to the source terminal
  • the service switching entity includes:
  • a second receiving unit configured to receive a call that is sent by the source terminal and includes a group switchboard access code And requesting, by the service access entity, the destination terminal connection identifier;
  • a first connection unit configured to establish a connection with the service access entity according to the group switchboard access code
  • a second connecting unit configured to establish a connection between the source terminal and the destination terminal according to the destination terminal connection identifier.
  • the embodiment of the present invention further provides a service switching entity, where the service switching entity includes: a receiving unit, configured to receive a call request that includes a group switchboard access code sent by the source terminal, and a destination terminal connection identifier that is sent by the service access entity;
  • a first connection unit configured to establish a connection with the service access entity according to the group switchboard access code
  • a second connecting unit configured to establish a connection between the source terminal and the destination terminal according to the destination terminal connection identifier.
  • the service access entity searches for the destination terminal service identifier according to the saved correspondence between the terminal service identifier and the connection identifier.
  • the group CRBT service is directly deployed on the service access entity side, which simplifies the maintenance operation, reduces the time of the call process, reduces the system load, and enables different network terminals to join the group ring back tone to meet the personalized requirements of the group users.
  • FIG. 1 is a schematic flow chart of a first method step of implementing a group ring back tone in the background art
  • 2 is a schematic flowchart of a second method for implementing a group ring back tone in the background art
  • FIG. 3 is a schematic structural diagram of a system for playing a group ring back tone according to an embodiment of the present invention
  • FIG. 4 is a schematic flowchart of a method for playing a group ring back tone according to an embodiment of the present invention
  • FIG. 5 is a schematic structural diagram of a service switching entity according to an embodiment of the present invention.
  • the embodiment of the present invention is applied to a system including a service switching entity, a service access entity, and at least two terminals.
  • the source terminal sends a call request including a group switchboard access code to the service switching entity, and the service switching entity receives the call according to the group switchboard.
  • the source code establishes a connection with the service access entity, and then the source terminal sends the destination terminal service identifier to the service access entity, and the service access entity searches for the destination terminal service identifier according to the stored correspondence between the terminal service identifier and the connection identifier.
  • the service switching entity may be an entity such as a tandem switch (MS) / MSC / GMSC /, and the service access entity may be an entity such as a switchboard AIP, and may be applied to the embodiment of the present invention.
  • a service control entity which may include an entity such as an SCP.
  • FIG. 3 it is a schematic structural diagram of a system for playing a group ring back tone according to an embodiment of the present invention, where the system includes a service switching entity and a service access entity.
  • the service access entity includes a first receiving unit 11, a searching unit 12, and a playing unit 13, wherein the first receiving unit 11 is configured to receive the destination terminal service identifier sent by the source terminal, and the searching unit 12 is configured to use the terminal service identifier and The connection identifier is used to find the connection identifier corresponding to the destination terminal service identifier, and the destination terminal connection identifier is sent to the service switching entity.
  • the playback unit 13 is configured to play the group ring back tone to the source terminal.
  • the service switching entity includes a second receiving unit 21, a first connecting unit 22, and a second connection list a second receiving unit 21, configured to receive a call request that includes the group switchboard access code sent by the source terminal, and the destination terminal connection identifier that is sent by the service access entity, where the first connection unit 22 uses Establishing a connection with the service access entity according to the group switchboard access code; the second connection unit 23 is configured to establish a connection between the source terminal and the destination terminal according to the destination terminal connection identifier.
  • the system may include a service control entity, and the service control entity includes a first control unit 31, configured to control the service switching entity to disconnect from the service access entity when the destination terminal answers.
  • the service control entity may further include a second control unit 32, configured to control the service switching entity establishment and the service access entity after receiving the call request that includes the group switch access code sent by the service switching entity.
  • the service switching entity may include a sending unit 24 for transmitting the call request to the second control unit 32.
  • the service switching entity may include a disconnecting unit 25, configured to disconnect from the service access entity after receiving the connection identifier of the destination terminal and establishing a connection between the source terminal and the destination terminal. connection.
  • the service switching entity may include a third connecting unit 26, configured to establish and connect the service between the source terminal and the destination terminal, and before the service access entity plays the saved group ring back tone to the source terminal. Access the connection between entities.
  • a service switching entity is an MS/MSC
  • a source terminal is a terminal A
  • a destination terminal is a terminal B.
  • the service switching entity that provides service to the terminal A is the MS/MSC
  • the service switching entity that provides the service to the terminal B is the MS/MSC (b)
  • the service control entity is the SCP
  • the service access entity is the switchboard AIP.
  • Terminal A sends a call request containing the group switchboard access code to the MS/MSC (a), and the MS/MSC (a) establishes a connection with the switchboard AIP according to the group switchboard access code.
  • the terminal A first sends a call request to the MS/MSC (a), where the call request includes the group switchboard access code information.
  • the terminal A can be set to dial the set through the terminal A.
  • the group switchboard access code, and the call is connected to the MS/MSC (a) to implement the process of sending a call request.
  • the MS/MSC (a) determines whether the terminal A is a mobile network device or a fixed network device. If it is a mobile network device, the MS/MSC (a) sends routing information to the HLR.
  • the SRI includes the group switchboard access code, and obtains T-CSI information of the group switchboard access code; if it is a fixed network device, the MS/MSC(a) passes to the smart home location register (SHLR) Send the SRI information containing the group switchboard access code to obtain the T-CSI information of the group switchboard access code.
  • SHLR smart home location register
  • the MS/MSC (a) after receiving the group switchboard access code, the MS/MSC (a) sends a trigger signal to the SCP, and the SCP controls the MS/MSC (a) to establish a connection with the switchboard AIP.
  • the step is: The SSP (a) on the MS/MSC (a) side sends the IDP message as a trigger signal to the SCP, where the IDP message includes the switchboard access code information.
  • the SCP judges that the group switchboard service is to be performed according to the group switchboard access code information in the message, and then sends an RRBE message to the MS/MSC to monitor the link connection in real time. At the same time, the temporary connection is also established.
  • the ETC message contains the routing information of the switchboard AIP, indicating that the MS/MSC (a) establishes a connection with the switchboard AIP. Therefore, the MS/MSC (a) sends an IAM message containing the switchboard AIP routing code information to the switchboard AIP to the switchboard AIP to establish a connection between them.
  • the switchboard AIP After the connection is established, the switchboard AIP sends a secondary request command ARI message to the SCP, and a connection is established between the ARI message and the SCP.
  • the SCP then sends a user interaction script to the switchboard AIP to run the UlScriptrun message, informing the switchboard AIP to start the switchboard business process.
  • Step 402 The terminal A sends the terminal B service identifier to the switchboard AIP, and the switchboard AIP searches for the terminal B connection identifier according to the stored correspondence between the terminal service identifier and the connection identifier, and sends the connection identifier to the MS/MSC (a).
  • the connection identifier is a phone number.
  • the switchboard AIP After the switchboard AIP obtains the phone number information of the terminal B, it needs to be sent to the MS/MSC (a).
  • the switchboard AIP sends a user interaction script event (UIScriptEvent) message to the SCP to "3 ⁇ 4 terminal B". Number information.
  • UScriptEvent user interaction script event
  • the SCP When the SCP obtains the telephone number information of the terminal B, it sends a connection (CONNECT) message to the MS/MSC (a), which includes the telephone number of the terminal B.
  • CONNECT connection
  • the MS/MSC (a) needs to disconnect the connection with the switchboard AIP after obtaining the phone number information of the terminal B.
  • the disconnecting step may be: the SCP receives the phone number of the terminal B reported by the switchboard AIP. After that, it is determined that the terminal B has applied for the group CRBT service, and sends a message to close the user interaction script (UlScriptClose) to the switchboard AIP to release the connection with the switchboard AIP. At the same time, the SCP sends the teardown forward to the MS/MSC (a). A connection (DFC) message telling the MS/MSC (a) to remove the temporary session connection with the switchboard AIP, the MS/MSC (a) sends a REL message to the switchboard AIP, disconnecting them.
  • DFC connection
  • Step 403 The MS/MSC (a) establishes a connection between the terminal A and the terminal B according to the telephone number information of the terminal B, and the switchboard AIP plays the group ring back tone to the terminal A.
  • the MS/MSC (a) After obtaining the telephone number information of the terminal B, the MS/MSC (a) establishes a connection between the terminal A and the terminal B based on the telephone number information. Of course, it may also be that the MS/MSC (a) establishes a connection between the terminal A and the terminal B according to the obtained terminal B telephone number information, and then disconnects the connection with the switchboard AIP.
  • the SCP sends a request to the MS/MSC to configure a basic call state mode event (RRBE) and an application charging (AC) message, instructing the MS/MSC (a) to monitor the terminal's on-hook, no-answer, routing failure, and the like in real time. And report the billing report at the same time.
  • RRBE basic call state mode event
  • AC application charging
  • the CONNECT message sent by the SCP further includes: a CRBT routing identifier, a group switchboard access code, and a CRBT access identifier.
  • the CRBT routing identifier and the group switchboard access code are used to instruct the MS/MSC (a) to connect the session to the switchboard AIP, so that the group ringtone is played by the switchboard AIP to the terminal A; the CRBT access code and the terminal B phone number are used for Tell the HLR that the ringtone has been triggered Service, do not trigger the ring back tone service of terminal B again, avoiding duplication.
  • the MS/MSC (a) After the MS/MSC (a) receives the CONNECT message, the MS/MSC (a) sends an IAM message to the MS/MSC (b), where the message includes the telephone number of the terminal B and the CRBT access code.
  • the MS/MSC (b) sends the CRBT access code to the destination end HLR, instructing the HLR to no longer trigger the CRBT service of the terminal B according to the CRBT access code and return an ACM message to the MS/MSC.
  • Step 404 When the terminal B answers, the SCP controls the MS/MSC (a) to disconnect from the switchboard AIP.
  • terminal B When terminal B picks up the call, it sends an off-hook message to MS/MSC (b), then MS/MSC
  • the embodiment of the present invention further provides a service switching entity, as shown in FIG. 5, applied to a system including a service access entity and at least two terminals, where the service switching entity includes a receiving unit 41, a first connecting unit 42 and a second connecting unit 43, wherein the receiving unit 41 is configured to receive a call request with a group switchboard access code sent by the source terminal and a destination terminal connection identifier sent by the service access entity
  • the first connection unit 42 is configured to establish a connection with the service access entity according to the group switchboard access code
  • the second connection unit 43 is configured to establish between the source terminal and the destination terminal according to the destination terminal connection identifier. Connection.
  • the service switching entity may include a first disconnecting unit 44 for receiving the end of the destination After the connection is continued, and the connection between the source terminal and the destination terminal is established, the connection with the service access entity is disconnected.
  • the service switching entity may include a third connecting unit 45, configured to establish a connection with the service before the service access entity plays the saved group ring back tone to the source terminal after establishing a connection between the source terminal and the destination terminal.
  • the service switching entity may further include a second disconnecting unit 46, configured to disconnect the connection with the service access entity when the destination terminal answers.
  • the wired communication network and the wireless communication network all realize the callless loopback of the group CRBT playback, and the group CRBT can be implemented on the service access entity side, which simplifies the maintenance operation, reduces the system load, and makes the calling user
  • the group ring tone is heard.
  • the individual ring tones of the group members are heard.

Description

一种播放集团彩铃的方法、 系统及装置
技术领域
本发明涉及通信领域的数据传输技术, 尤其涉及一种播放集团彩铃的方 法、 系统及装置。
背景技术
现在越来越多的企业或组织釆用集团总机业务, 这些集团客户只需对外 公布一个总机号码, 则无论是集团内用户还是集团外用户都可以通过集团总 机得到各种服务。 例如, 主叫用户拨打集团总机接入码后, 可以获得人工转 接、 自动转接、 语音转接或总机外呼等服务, 其中, 人工转接即由话务员提 供人工服务, 通过由该话务员查询并转接至被叫用户; 自动转接即主叫用户 直接拨打被叫用户的常号, 由系统根据该常号建立主叫用户和被叫用户之间 的连接; 语音转接即主叫用户通过语音系统说出被叫的其他标识, 如名称等, 由系统查询出被叫号码, 并建立话路连接; 总机外呼即集团成员通过总机呼 叫集团外用户, 可以降低企业员工业务方面的通话费用。
集团彩铃业务区别于目前的彩铃业务, 它可以是集团为内部用户统一制 作的彩铃, 并且不影响集团内部用户个人彩铃的使用, 可以按时段、 部门和 群组定制。
现有的实现集团彩铃的方法主要有两种, 第一种方法的步骤流程示意图 如图 1所示, 在本方法中设定主叫终端为终端 A, 被叫终端为终端 B, 为终端 A提供服务的软交换实体( SOFTX ) /业务交换点( SSP )记为 SOFTX/SSP ( a ), 为被叫提供服务的 SOFTX/SSP记为 SOFTX/SSP ( b ), 该方法主要包括以下 步骤:
步骤 101、 终端 A向 SOFTX/ SSP ( a )发送呼叫请求, 该呼叫请求中包 含了终端 B的电话号码信息, 且终端 B已经申请了集团彩铃业务。 步骤 102、 该 SOFTX/SSP (a)收到该呼叫请求后, 向智能网中的业务控 制点 ( SCP )发送初始消息 ( IDP ), 该 IDP消息中包括终端 A和终端 B的电 话号码信息。
步骤 103、 SCP根据终端 B的电话号码信息判断出终端 B已经申请了集 团彩铃业务,则向 SOFTX/SSP ( a )下发连接消息( CONNECT ),该 CONNECT 中包含了终端 B的电话号码信息和对应的彩铃路由码。
步骤 104、 若当 SOFTX/SSP (a)收到该 CONNECT消息后判断该消息中 还包含了同振彩铃呼叫标识时, 表示本集团彩铃的实现方法利用了 SSP同振 技术, 则 SOFTX/SSP (a)发送起始地址消息 (IAM)至 SOFTX/SSP (b), 该 IAM消息中包括终端 B的电话号码信息,要求建立终端 A、 B之间的连接, 并要求屏蔽终 B的回铃音, 随即 SOFTX/SSP (b)向 SOFTX/SSP (a)返回地 址全(ACM) 消息, 指示连接建立成功。 然后 SOFTX/SSP (a)再向彩铃增 强智能外设(AIP)发送 IAM消息, 该消息中包含前述彩铃路由码, 建立与 彩铃 AIP之间的连接, 随即彩铃 AIP向 SOFTX/SSP ( a )返回 ACM消息, 终 端 A听见彩铃 AIP播放的集团彩铃。
步骤 105、 当终端 B摘机应答时, 即向 SOFTX/SSP (b)发送应答消息 ( A丽)。
步骤 106: SOFTX/SSP (b)收到该 ANM消息后, 向 SCP发送 IDP消息, 上报终端 B摘机事件。
步骤 107: SCP收到该 IDP消息后, 向 SOFTX/SSP (a)发送释放消息
(RED, 指示 SOFTX/SSP (a)拆除到彩铃 AIP的连接, 停止播放集团彩铃, 此时终端 A和 B开始通话。
在图 1 所示的方法中, 实现彩铃业务和总机业务要分别使用不同的子系 统, 导致在集团彩铃业务开展时, 必须在两个子系统都存放相应的数据, 增 加了数据冗余, 并且该方法也只是在有线通信网络中应用。
现有的第二种实现集团彩铃的方法如图 2所示, 在本方法中同样设定主 叫终端为终端 A, 被叫终端为终端 B, 为终端 A提供服务的 SSP/移动业务交 互中心(MSC ) /关口移动交换中心(GMSC )记为 GMSC/MSC/SSP ( a ), 为 被叫提供服务的 GMSC/MSC/SSP记为 GMSC/MSC/SSP ( b ), 该方法主要包 括以下步骤:
步骤 201 : 终端 A向 GMSC/MSC/SSP ( a )发送呼叫请求, 该呼叫请求中 包含了终端 B的电话号码, 该终端 B已经申请了集团彩铃业务。 若终端 A为 固定和其他移动网用户, 则由 GMSC在归属位置寄存器 (HLR ) 中查询出终 端 B的签约信息(T— CSI ); 若终端 A为本网用户, 则由 MSC在 HLR中查询 出该 T— CSI信息。
步骤 202: GMSC/MSC/SSP ( a )根据查询出的 T— CSI信息向终端 B归属 的 SCP发送 IDP消息, 该 IDP消息中包括终端 A和 B的电话号码信息。
步骤 203: SCP向 GMSC/MSC/SSP ( a )下发请求配置基本呼叫状态模式 事件(RRBE ), 让 GMSC/MSC/SSP ( a ) 实时上报链路连接状况。
步骤 204: SCP向 GMSC/MSC/SSP ( a )下发 CONNECT消息, 指示其建 立到彩铃 AIP的连接, 该 CONNECT消息中包含了终端 B的电话号码和彩铃 路由码, 若终端 A和 B为不同网络中的终端, 则还包括终端 B的漫游号码。
步骤 205: GMSC/MSC/SSP ( a )收到该 CONNECT消息后将呼叫请求路 由到彩铃 AIP 中; 彩铃 AIP 再将呼叫接续到 GMSC/MSC/SSP ( b ); 最后 GMSC/MSC/SSP ( b )再将呼叫接续到终端 B。
步骤 206: 彩铃 AIP根据被叫号码定制的集团彩铃向终端 A播放彩铃, 同时屏蔽从终端 B中播放的回铃音。 当终端 B摘机时, 总机彩铃 AIP监控到 该事件的发生, 停止播放总机彩铃, 终端 A和 B可以开始通话, 当通话结束 时, 拆除 GMSC/MSC/SSP ( a )和彩铃 AIP的连接。 在图 2所示的方法中, 由于是通过彩铃 AIP来呼叫终端 B, 当终端 A和 B之 间的话路接通后, 彩铃 AIP与 GMSC/MSC/SSP ( a )之间的中继线仍然被占用, 这种状态一直将会持续到终端 A和 B之间通话结束, 使得实现彩铃业务过程中 存在话路有迂回, 设备中继遭到浪费, 降低了彩铃 AIP并行处理彩铃业务的能 力; 另外, 由于呼叫过程中, 主叫终端直接通过被叫终端的电话号码来接续 被叫, 使得一个集团中的用户必须是同一网络中的才能加入集团彩铃, 这样 对于集团内用户所使用的终端限制较大, 不能满足集团用户个性化的要求。
发明内容
本发明实施例提供一种播放集团彩铃的方法、 系统及装置, 以解决现有 技术中存在播放彩铃时话路迂回、 数据冗余、 占有大量中继通道资源的问题, 该方法包括以下步骤:
业务交换实体接收源终端发送的含有集团总机接入码的呼叫请求, 并根 据所述集团总机接入码建立与业务接入实体之间的连接;
所述业务接入实体接收源终端发送的目的终端业务标识, 根据该目的终 端业务标识和接续标识的对应关系查找出目的终端业务标识对应的目的终端 接续标识, 并将目的终端接续标识发送给所述业务交换实体;
所述业务交换实体根据所述目的终端接续标识建立源终端和目的终端之 间的连接, 并且所述业务接入实体向源终端播放集团彩铃。
本发明实施例还提供一种播放集团彩铃的系统, 该系统包括业务交换实 体和业务接入实体, 其中,
所述业务接入实体包括:
第一接收单元, 用于接收源终端发送的目的终端业务标识;
查找单元, 用于根据终端业务标识和接续标识的对应关系查找出所述目 的终端业务标识对应的接续标识, 将目的终端接续标识发送给所述业务交换 实体;
播放单元, 用于向所述源终端播放集团彩铃;
所述业务交换实体包括:
第二接收单元, 用于接收所述源终端发送的含有集团总机接入码的呼叫 请求和所述业务接入实体发送的所述目的终端接续标识;
第一连接单元, 用于根据所述集团总机接入码建立与所述业务接入实体 之间的连接;
第二连接单元, 用于根据所述目的终端接续标识建立源终端和目的终端 之间的连接。
本发明实施例还提供一种业务交换实体, 该业务交换实体包括: 接收单元, 用于接收源终端发送的含有集团总机接入码的呼叫请求和业 务接入实体发送的目的终端接续标识;
第一连接单元, 用于根据所述集团总机接入码建立与业务接入实体之间 的连接;
第二连接单元, 用于根据所述目的终端接续标识建立源终端和目的终端 之间的连接。 本发明实施例通过首先业务交换实体根据集团总机接入码建立与业务接 入实体之间的连接后, 该业务接入实体根据保存的终端业务标识和接续标识 的对应关系查找出目的终端业务标识对应的接续标识, 并将目的终端接续标 识发送给业务交换实体, 然后业务交换实体根据目的终端接续标识建立源终 端和目的终端之间的连接, 并且业务接入实体向源终端播放集团彩铃, 最后 当目的终端应答时, 业务交换实体断开与业务接入实体之间的连接的方法, 避免了播放集团彩铃时存在话路迂回的问题, 节约了中继通道资源, 减少了 数据冗余, 由于集团彩铃业务直接在业务接入实体侧开展, 简化了维护操作, 减少了呼叫过程的时间, 降低了系统负荷, 并且还能够实现不同网络终端加 入集团彩铃, 满足集团用户个性化的要求。
附图说明
图 1为背景技术中第一种实现集团彩铃的方法步骤流程示意图; 图 2为背景技术中第二种实现集团彩铃的方法步骤流程示意图; 图 3为本发明实施例中播放集团彩铃的系统结构示意图;
图 4为本发明实施例中播放集团彩铃的方法步骤流程示意图; 图 5为本发明实施例业务交换实体结构示意图。
具体实施方式
本发明实施例应用于包含业务交换实体、 业务接入实体和至少两个终端 的系统中, 首先源终端向业务交换实体发送含有集团总机接入码的呼叫请求, 该业务交换实体根据集团总机接入码建立与业务接入实体之间的连接, 然后 源终端向业务接入实体发送目的终端业务标识, 该业务接入实体根据保存的 终端业务标识和接续标识的对应关系查找出目的终端业务标识对应的接续标 识, 并将目的终端接续标识发送给业务交换实体; 接着业务交换实体根据目 的终端接续标识建立源终端和目的终端之间的连接, 并且该业务接入实体向 源终端播放保存的集团彩铃; 最后当目的终端应答时, 所述业务交换实体断 开与业务接入实体之间的连接。 通过上述步骤, 实现了向源终端播放集团彩 铃的过程。在本发明实施例中, 所述业务交换实体可以为汇接局交换机(MS ) /MSC/GMSC/等实体, 业务接入实体可以为总机 AIP等实体, 另外, 本发明实 施例中可以应用到业务控制实体, 该业务控制实体可以包括 SCP等实体。
下面结合说明书附图详细说明本发明方法。
如图 3 所示, 为本发明实施例中播放集团彩铃的系统结构示意图, 该系 统包括业务交换实体和业务接入实体。 其中, 业务接入实体包括第一接收单 元 11、 查找单元 12和播放单元 13 , 其中, 第一接收单元 11用于接收源终端 发送的目的终端业务标识; 查找单元 12用于根据终端业务标识和接续标识的 对应关系查找出所述目的终端业务标识对应的接续标识, 将目的终端接续标 识发送给所述业务交换实体; 播放单元 13用于向所述源终端播放集团彩铃。
所述业务交换实体包括第二接收单元 21、第一连接单元 22和第二连接单 元 23 , 其中, 第二接收单元 21用于接收所述源终端发送的含有集团总机接入 码的呼叫请求和所述业务接入实体发送的所述目的终端接续标识; 第一连接 单元 22用于根据所述集团总机接入码建立与所述业务接入实体之间的连接; 第二连接单元 23用于根据所述目的终端接续标识建立源终端和目的终端之间 的连接。
所述系统可以包括业务控制实体,该业务控制实体包括第一控制单元 31 , 用于当所述目的终端应答时, 控制所述业务交换实体断开与业务接入实体之 间的连接。
所述业务控制实体还可以包括第二控制单元 32, 用于当接收到所述业务 交换实体发送的含有集团总机接入码的呼叫请求之后, 控制所述业务交换实 体建立和业务接入实体之间的连接。 则所述业务交换实体可以包括发送单元 24, 用于向所述第二控制单元 32发送所述呼叫请求。
所述业务交换实体可以包括断开单元 25 , 用于当接收到所述目的终端接 续标识后, 且建立源终端和目的终端之间的连接之前, 断开与所述业务接入 实体之间的连接。 另外, 所述业务交换实体可以包括第三连接单元 26, 用于 当建立源终端和目的终端之间的连接后, 且业务接入实体向源终端播放保存 的集团彩铃之前, 建立与所述业务接入实体之间的连接。
下面结合具体实施例详细说明本发明方法。 如图 4 所示, 为本发明实施 例中播放集团彩铃的方法步骤流程示意图, 在本实施例中, 设定业务交换实 体为 MS/MSC, 源终端为终端 A, 目的终端为终端 B, 为终端 A提供服务的 业务交换实体为 MS/MSC ),为终端 B提供服务的业务交换实体为 MS/MSC ( b ),业务控制实体为 SCP,业务接入实体为总机 AIP,该方法包括以下步骤: 步骤 401 : 终端 A向 MS/MSC ( a )发送含有集团总机接入码的呼叫请求, MS/MSC ( a )根据集团总机接入码建立与总机 AIP之间的连接。
在本步骤中, 终端 A首先向 MS/MSC ( a )发送呼叫请求, 该呼叫请求中 包含集团总机接入码信息, 在本实施例中, 可以设定是通过终端 A拨打该集 团总机接入码, 且该呼叫被接续到 MS/MSC ( a )来实现发送呼叫请求的过程 的。 MS/MSC ( a )收到该呼叫请求后, 判断终端 A为移动网络设备还是固定 网络设备。 若为移动网络设备, 则 MS/MSC ( a )通过向 HLR发送路由信息
( SRI ),该 SRI中包含所述集团总机接入码,并获取集团总机接入码的 T— CSI 信息;若为固定网络设备,则 MS/MSC( a )通过向智能归属位置寄存器( SHLR ) 发送含有集团总机接入码的 SRI信息获取该集团总机接入码的 T— CSI信息。
在本实施例中, MS/MSC ( a )收到该集团总机接入码后是通过向 SCP发 送触发信号, 并由该 SCP控制 MS/MSC ( a )建立和总机 AIP之间的连接, 具体步骤是: MS/MSC ( a )侧的 SSP ( a )将 IDP 消息作为触发信号发送到 SCP中, 该 IDP消息中包括总机接入码信息。 SCP接收到该 IDP消息后, 根 据消息中的集团总机接入码信息判断要进行集团总机业务,则向 MS/MSC ) 下发 RRBE消息, 来实时监测链路连接情况。 同时下发的还有建立临时连接
( ETC )消息,该 ETC消息中包含了总机 AIP的路由信息,指示 MS/MSC ( a ) 与总机 AIP之间建立连接。 因此, MS/MSC ( a ) 向总机 AIP发送包含总机 AIP路由码信息的 IAM消息至总机 AIP处, 建立它们之间的连接。
当该连接建立后, 总机 AIP向 SCP发送辅助请求指令 ARI消息, 通过该 ARI消息与 SCP之间建立连接。随后 SCP向总机 AIP发送用户交互脚本运行 UlScriptrun消息 , 告知总机 AIP开始进行总机业务流程。
步骤 402: 终端 A向总机 AIP发送终端 B业务标识, 总机 AIP根据保存 的终端业务标识和接续标识的对应关系查找出终端 B接续标识, 并将该接续 标识发送给 MS/MSC ( a )。
当 MS/MSC ( a ) 与总机 AIP建立连接后, 即终端 A通过 MS/MSC ( a ) 与总机 AIP建立话路连接, 则向总机 AIP发送终端 B的业务标识。 在本发明 中, 所述业务标识是除接续标识以外的能够表明终端 B身份的标识, 如终端 B的名称标识。 例如, 若总机 AIP向终端 A提供人工服务, 则终端 A说出终 端 B的名称, 即用户的姓名后, 话务员可以通过查询预先保存的终端业务标 识和接续标识的对应关系获得终端 B的接续信息。 在本实施例中, 接续标识 为电话号码。当总机 AIP获得终端 B的电话号码信息后,需要发送给 MS/MSC (a), 在本实施例中, 总机 AIP 通过向 SCP 发送用户交互脚本事件 ( UIScriptEvent ) 消息来上"¾终端 B的电话号码信息。 当 SCP获得终端 B的 电话号码信息后, 向 MS/MSC (a)发送连接 ( CONNECT ) 消息, 该消息中 包括终端 B电话号码。 为了实现在话路转接过程中无迂回, 当 MS/MSC (a) 获得终端 B的电话号码信息后需要断开与总机 AIP之间的连接, 在本实施例 中, 该断开步骤可以为: SCP收到总机 AIP上报的终端 B的电话号码后, 判 断出终端 B已经申请了集团彩铃业务, 同时向总机 AIP发送关闭用户交互脚 本(UlScriptClose)消息,释放与总机 AIP之间的连接。同时, SCP向 MS/MSC (a)发送拆除前向连接(DFC) 消息, 告知 MS/MSC (a)拆除与总机 AIP 之间的临时话路连接, 则 MS/MSC (a) 向总机 AIP发送 REL消息, 断开它 们之间的连接。
步骤 403: MS/MSC ( a )才艮据终端 B的电话号码信息建立终端 A和终端 B之间的连接, 并且该总机 AIP向终端 A播放集团彩铃。
MS/MSC (a)获得终端 B的电话号码信息后, 根据该电话号码信息建立 终端 A与终端 B之间的连接。 当然, 也可以是 MS/MSC (a)根据获得的终 端 B电话号码信息建立终端 A与终端 B之间的连接后再断开与总机 AIP之间 的连接。
接着, SCP向 MS/MSC )下发请求配置基本呼叫状态模式事件(RRBE) 和申请计费 (AC) 消息, 指示 MS/MSC (a) 实时监视终端的挂机、 无应答、 路由选择失败等事件, 并同时上报计费报告。
在上述步骤 402中, SCP发送的 CONNECT消息中还包括: 彩铃路由标 识、 集团总机接入码和彩铃接入标识。 其中, 彩铃路由标识和集团总机接入 码用于指示 MS/MSC ( a )将话路接续到总机 AIP , 以便由总机 AIP向终端 A 播放集团彩铃;彩铃接入码和终端 B电话号码用于告知 HLR已经触发过彩铃 业务了, 不要再次触发终端 B 的彩铃业务, 避免了重复。 具体步骤为: 当 MS/MSC ( a )接收到该 CONNECT消息后, MS/MSC ( a ) 向 MS/MSC ( b ) 发送 IAM消息, 该消息中包含了终端 B的电话号码和彩铃接入码, MS/MSC ( b )再将该彩铃接入码发送至目的端 HLR处, 指示 HLR依据该彩铃接入码 不再触发终端 B的彩铃业务并向 MS/MSC )返回 ACM消息。随即 MS/MSC
( a )根据获得集团总机接入码通过 IAM消息建立与总机 AIP之间的连接, 当总机 AIP中保存一个以上集团彩铃时, MS/MSC ( a )将彩铃路由标识发送 给总机 AIP, 该总机 AIP根据彩铃路由标识与集团彩铃的对应关系查找出所 述彩铃路由标识对应的集团彩铃, 并向 MS/MSC ( a )返回 ACM消息, 同时 触发该集团彩铃播放流程, 将保存的音频数据向终端 A播放。
步骤 404: 当终端 B应答时, SCP控制 MS/MSC ( a )断开与总机 AIP之 间的连接。
当终端 B摘机应答时, 即向 MS/MSC ( b )发送摘机消息, 则 MS/MSC
( b )侧的 SSP ( b ) 向 SCP上报终端 B的摘机消息。 SCP收到该消息后, 向 MS/MSC ( a )发送 REL消息, 控制 MS/MSC ( a ) 断开与总机 AIP之间的连 接。 当 MS/MSC ( a ) 收到该 REL消息时, 向总机 AIP发送 REL消息, 断开 与总机 AIP之间的连接, 则总机停止向终端 A发送集团彩铃, 终端 A和 B之 间开始通话。
通过上述对本发明方法和系统的详细描述, 本发明实施例还提供一种业 务交换实体, 如图 5 所示, 应用于包含业务接入实体和至少两个终端的系统 中, 该业务交换实体包括接收单元 41、 第一连接单元 42和第二连接单元 43 , 其中, 接收单元 41用于接收源终端发送的含有集团总机接入码的呼叫请求和 所述业务接入实体发送的目的终端接续标识; 第一连接单元 42用于根据所述 集团总机接入码建立与所述业务接入实体之间的连接; 第二连接单元 43用于 根据该目的终端接续标识建立源终端和目的终端之间的连接。
所述业务交换实体可以包括第一断开单元 44, 用于当接收到所述目的终 端接续标识后, 且建立源终端和目的终端之间的连接之前, 断开与所述业务 接入实体之间的连接。 所述业务交换实体可以包括第三连接单元 45 , 用于当 建立源终端和目的终端之间的连接后, 且业务接入实体向源终端播放保存的 集团彩铃之前, 建立与所述业务接入实体之间的连接。 所述业务交换实体还可以包括第二断开单元 46 ,用于当目的终端应答时, 断开与所述业务接入实体之间的连接。
通过本发明, 在有线通信网络和无线通信网络都实现了集团彩铃播放的 无话路迂回, 且集团彩铃可以在业务接入实体侧实现, 简化了维护操作, 降 低了系统负荷, 使得主叫用户拨打集团总机接入码转接时, 听到的是集团彩 铃, 当直接拨打集团内被叫用户时, 听到的是集团成员的个人彩铃。
发明的精神和范围。 这样, 倘若本发明的这些修改和变型属于本发明权利要 求及其等同技术的范围之内, 则本发明也意图包含这些改动和变型在内。

Claims

权 利 要 求
1、 一种播放集团彩铃的方法, 其特征在于, 该方法包括以下步骤: 业务交换实体接收源终端发送的含有集团总机接入码的呼叫请求, 并根 据所述集团总机接入码建立与业务接入实体之间的连接;
所述业务接入实体接收源终端发送的目的终端业务标识, 根据该目的终 端业务标识和接续标识的对应关系查找出目的终端业务标识对应的目的终端 接续标识, 并将目的终端接续标识发送给所述业务交换实体;
所述业务交换实体根据所述目的终端接续标识建立源终端和目的终端之 间的连接, 并且所述业务接入实体向源终端播放集团彩铃。
2、 如权利要求 1所述的方法, 其特征在于, 所述方法还包括: 当目的终端应答时, 由业务控制实体控制所述业务交换实体断开与业务 接入实体之间的连接。
3、 如权利要求 1所述的方法, 其特征在于, 所述该业务交换实体根据所 述集团总机接入码建立与所述业务接入实体之间的连接的步骤包括:
该业务交换实体根据所述集团总机接入码向业务控制实体发送触发信 号, 则该业务控制实体控制所述业务交换实体建立和业务接入实体之间的连 接。
4、 如权利要求 3所述的方法, 其特征在于, 所述业务控制实体控制所述 业务交换实体建立与业务接入实体之间的连接的步骤包括:
所述业务控制实体将建立临时连接消息发送给所述业务交换实体, 该消 息中包含所述业务接入实体的路由信息, 则所述业务交换实体根据该路由信 息建立与所述业务接入实体之间的连接。
5、 如权利要求 1所述的方法, 其特征在于,
所述业务接入实体将目的终端接续标识发送给所述业务交换实体之后, 且所述业务交换实体根据所述目的终端接续标识建立源终端和目的终端之间 的连接之前还包括步骤: 该业务交换实体断开与该业务接入实体之间的连接;
所述业务交换实体根据所述目的终端接续标识建立源终端和目的终端之 间的连接后, 且业务接入实体向源终端播放集团彩铃之前还包括步骤:
所述业务交换实体建立与所述业务接入实体之间的连接。
6、 如权利要求 5所述的方法, 其特征在于, 由业务控制实体控制所述业 务交换实体断开与该业务接入实体之间的连接。
7、 如权利要求 5所述的方法, 其特征在于, 由业务控制实体控制所述业 务交换实体建立与所述业务接入实体之间的连接。
8、 如权利要求 6所述的方法, 其特征在于, 所述业务控制实体控制所述 业务交换实体断开与业务接入实体之间的连接的步骤包括:
所述业务控制实体向所述业务交换实体发送拆除前向连接消息后, 该业 务交换实体向业务接入实体发送释放消息, 断开连接。
9、 如权利要求 7所述的方法, 其特征在于, 所述业务控制实体控制所述 业务交换实体建立与业务接入实体之间的连接的步骤包括:
所述业务控制实体将连接消息发送给所述业务交换实体, 该连接消息中 包含集团总机接入码, 该业务交换实体根据该集团总机接入码建立与所述业 务接入实体之间的连接。
10、 如权利要求 9 所述的方法, 其特征在于, 当所述业务接入实体保存 一个以上集团彩铃时, 所述连接消息中还包括彩铃路由标识, 所述业务交换 实体将该彩铃路由标识发送给所述业务接入实体, 该业务接入实体根据彩铃 路由标识与集团彩铃的对应关系查找出所述彩铃路由标识对应的集团彩铃。
11、 如权利要求 9 所述的方法, 其特征在于, 所述连接消息中还包括彩 铃接入标识, 所述业务交换实体将该彩铃接入标识发送给目的终端的归属位 置实体, 用于指示该归属位置实体不触发目的终端彩铃业务。
12、 如权利要求 1 所述的方法, 其特征在于, 所述将目的终端接续标识 发送给所述业务交换实体的步骤包括: 所述业务接入实体将所述目的终端接续标识发送给业务控制实体, 该业 务控制实体将该目的终端接续标识发送给所述业务交换实体。
13、 一种播放集团彩铃的系统, 其特征在于, 该系统包括业务交换实体 和业务接入实体, 其中,
所述业务接入实体包括:
第一接收单元, 用于接收源终端发送的目的终端业务标识;
查找单元, 用于根据终端业务标识和接续标识的对应关系查找出所述目 的终端业务标识对应的接续标识, 将目的终端接续标识发送给所述业务交换 实体;
播放单元, 用于向所述源终端播放集团彩铃;
所述业务交换实体包括:
第二接收单元, 用于接收所述源终端发送的含有集团总机接入码的呼叫 请求和所述业务接入实体发送的所述目的终端接续标识;
第一连接单元, 用于根据所述集团总机接入码建立与所述业务接入实体 之间的连接;
第二连接单元, 用于根据所述目的终端接续标识建立源终端和目的终端 之间的连接。
14、 如权利要求 13所述的系统, 其特征在于, 所述系统包括业务控制实 体, 该业务控制实体包括第一控制单元, 用于当所述目的终端应答时, 控制 所述业务交换实体断开与业务接入实体之间的连接。
15、 如权利要求 14所述的系统, 其特征在于, 所述业务控制实体包括第 二控制单元, 用于当接收到所述业务交换实体发送的含有集团总机接入码的 呼叫请求之后, 控制所述业务交换实体建立和业务接入实体之间的连接; 所述业务交换实体包括: 发送单元, 用于向所述第二控制单元发送所述 呼叫请求。
16、 如权利要求 13所述的系统, 其特征在于, 所述业务交换实体包括: 断开单元, 用于当接收到所述目的终端接续标识后, 且建立源终端和目 的终端之间的连接之前, 断开与所述业务接入实体之间的连接。
17、 如权利要求 13所述的系统, 其特征在于, 所述业务交换实体包括: 第三连接单元, 用于当建立源终端和目的终端之间的连接后, 且所述业 务接入实体向源终端播放集团彩铃之前, 建立与所述业务接入实体之间的连 接。
18、 一种业务交换实体, 该业务交换实体包括:
接收单元, 用于接收源终端发送的含有集团总机接入码的呼叫请求和业 务接入实体发送的目的终端接续标识;
第一连接单元, 用于根据所述集团总机接入码建立与业务接入实体之间 的连接;
第二连接单元, 用于根据所述目的终端接续标识建立源终端和目的终端 之间的连接。
19、 如权利要求 18所述业务交换实体, 其特征在于, 所述业务交换实体 包括:
第一断开单元, 用于当接收到所述目的终端接续标识后, 且建立源终端 和目的终端之间的连接之前, 断开与所述业务接入实体之间的连接。
20、 如权利要求 18所述业务交换实体, 其特征在于, 所述业务交换实体 包括: 第三连接单元, 用于当建立源终端和目的终端之间的连接后, 且业务接 入实体向源终端播放集团彩铃之前, 建立与所述业务接入实体之间的连接。
21、 如权利要求 18所述业务交换实体, 其特征在于, 所述业务交换实体 包括:
第二断开单元, 用于当目的终端应答时, 断开与所述业务接入实体之间 的连接。
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