WO2017219809A1 - 一种呼叫转接的方法和装置 - Google Patents

一种呼叫转接的方法和装置 Download PDF

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Publication number
WO2017219809A1
WO2017219809A1 PCT/CN2017/085185 CN2017085185W WO2017219809A1 WO 2017219809 A1 WO2017219809 A1 WO 2017219809A1 CN 2017085185 W CN2017085185 W CN 2017085185W WO 2017219809 A1 WO2017219809 A1 WO 2017219809A1
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WIPO (PCT)
Prior art keywords
terminal
call
button information
phone number
receiving
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PCT/CN2017/085185
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English (en)
French (fr)
Inventor
屈天喜
钱晨
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中兴通讯股份有限公司
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Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Publication of WO2017219809A1 publication Critical patent/WO2017219809A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers
    • H04M3/428—Arrangements for placing incoming calls on hold

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a method and apparatus for call forwarding.
  • the call forwarding technology is mainly that the terminal sends a specific request to the AS (Application Server) of the second terminal after the two-way call, the specific message includes the session information between the first terminal and the second terminal, and the second The session information between the terminal and the third terminal, and then the AS releases the second terminal to implement the association between the first terminal and the third terminal to implement call forwarding.
  • AS Application Server
  • the call forwarding technology requires the terminal of the second terminal to implement two-way calling, that is, to implement the call between the first terminal and the second terminal, and to use the second terminal and the third terminal; and to support the sending of the specific request. Capabilities, but the general terminal does not support two-way calls and the ability to support the sending of these specific requests. It can be seen that the hardware cost of the call forwarding in the prior art is high.
  • the purpose of the embodiments of the present invention is to provide a method and an apparatus for call forwarding, which solves the problem of high call forwarding cost in the prior art.
  • an embodiment of the present invention provides a method for call forwarding, including:
  • buttons information are consistent with the feature code, playing a call hold tone to the first terminal, and sending a play collection and reception command to the second terminal;
  • An embodiment of the present invention provides a call forwarding apparatus, including:
  • the button receiving module is configured to receive the button information sent by the second terminal when the first terminal talks with the second terminal;
  • a first determining module configured to determine whether the button information is consistent with a preset feature code
  • the operation module is configured to: if the button information is consistent with the feature code, play a call hold tone to the first terminal, and send a play collection and receive command to the second terminal;
  • An acquiring module configured to acquire a phone number received when the second terminal executes the sound collection and receiving command
  • a switching module configured to transfer the first terminal to a third terminal corresponding to the phone number.
  • the embodiment of the present invention further provides a computer storage medium, where the computer storage medium stores one or more programs executable by a computer, and when the one or more programs are executed by the computer, the computer is executed as described above.
  • a method of call forwarding provided.
  • the first terminal plays a call hold tone, and sends a play and receive command to the second terminal to obtain a phone number received by the second terminal when the play release command is executed, and the first The terminal is transferred to the third terminal corresponding to the phone number.
  • the method does not need a terminal supporting the two-way call, and does not need the terminal to support the capability of sending a specific message, where the specific message includes between the first terminal and the second terminal.
  • the session information and the session information between the second terminal and the third terminal achieve the technical effect of saving the hardware cost of the call transfer.
  • FIG. 1 is a flowchart of a method for call forwarding according to an embodiment of the present invention
  • FIG. 2 is a flowchart of another method for call forwarding according to an embodiment of the present invention.
  • FIG. 3 is a schematic diagram of a flow chart of receiving, by an application server, key information sent by the second terminal according to an embodiment of the present disclosure
  • FIG. 4 is a second schematic flowchart of an application server receiving key information sent by the second terminal according to an embodiment of the present disclosure
  • FIG. 5 is a flowchart of still another method for call forwarding provided by an embodiment of the present invention.
  • FIG. 6 is a structural diagram of an apparatus for call forwarding according to an embodiment of the present invention.
  • FIG. 7 is a structural diagram of a button receiving module in a call forwarding device according to an embodiment of the present disclosure.
  • FIG. 8 is a second structural diagram of a button receiving module in a call forwarding device according to an embodiment of the present disclosure.
  • FIG. 9 is a structural diagram of another apparatus for call forwarding according to an embodiment of the present invention.
  • FIG. 10 is a structural diagram of a switching module in a device for call forwarding according to an embodiment of the present invention.
  • an embodiment of the present invention provides a method for call forwarding, including the following steps:
  • Step S101 Receive a button information sent by the second terminal when the first terminal talks with the second terminal.
  • the button information sent by the second terminal is a combination of dial buttons, for example, the button information may be *77, *88, #76, *#66, and the like.
  • the user input button information on the terminal is a DTMF signal.
  • the Core Network (CN) converts the DTMF signal into an Application Server (AS).
  • AS Application Server
  • Step S102 Determine whether the button information is consistent with a preset feature code.
  • Step S103 If the button information is consistent with the feature code, play a call hold tone to the first terminal, and send a play collection and receive command to the second terminal.
  • the call hold tone is played to the first terminal by using a Media Resource Server (MRS) to send a call hold tone to the first terminal, and the call hold tone is pre-recorded audio information.
  • MRS Media Resource Server
  • the implementation process of playing the call hold tone may be that the application server sends a REINVITE request to the first terminal, where the REINVITE request carries the SDP media information of the media server, where the SDP media information includes the IP address, port number, and audio information of the first terminal. Video information, encoding format, and more.
  • the first terminal returns a response 200 OK of the REINVITE to the application server, and the response 200 OK of the REINVITE carries the SDP media information of the first terminal, and then the application server sends an ACK confirmation message to the first terminal, and pre-records the first terminal. Good audio information.
  • the sound collection and reception number may be first playing a specific voice, and then receiving the key information input by the second terminal according to the prompt of the voice, for example, the specific voice is “Please input the voice you want to dial.
  • the mobile phone number and then receives the mobile phone number input by the second terminal, such as 1234567; or the specific voice is "Please enter the service feature code and the dialed mobile phone number", and then receive the second terminal input service feature code and mobile phone number, such as *# 1234567.
  • Step S104 Acquire a phone number received when the second terminal executes the sound collection and collection command.
  • the phone number received when the second terminal executes the sound collection and collection command refers to the information received in step 103.
  • the received information is 1234567
  • the above phone number is 1234567.
  • the received message is *#1234567
  • the digital part of the information is obtained, that is, 1234567.
  • Step S105 Transfer the first terminal to a third terminal corresponding to the phone number.
  • the execution entity of the embodiment may be an application server of the first terminal, or may be an application server of the second terminal, for example, when the input button information is the first terminal, The execution subject is an application server of the first terminal. When the input button information is the second terminal, the execution subject is an application server of the second terminal.
  • the button information sent by the second terminal is received, and it is determined whether the button information is consistent with a preset feature code, if the button information and the feature code are Consistently, playing a call hold tone to the first terminal, and sending a play and receive number command to the second terminal, and acquiring a phone number received by the second terminal when the play release number command is executed, Transferring, by the first terminal, to a third terminal corresponding to the phone number, the method does not need a terminal supporting a two-way call, and does not need the terminal to support the capability of sending a specific message, where the specific message includes the first terminal and the first terminal.
  • the session information between the two terminals and the session information between the second terminal and the third terminal achieve the technical effect of saving the hardware cost of the call transfer.
  • the embodiment of the present invention provides another method for call forwarding, including the following steps:
  • Step S201 Receive a button information sent by the second terminal when the first terminal talks with the second terminal.
  • the button information sent by the second terminal is a combination of dial buttons, for example, the button information may be *77, *88, #76, *#66, and the like.
  • the user input button information on the terminal is a DTMF signal.
  • the core network Core Network, referred to as CN
  • AS Application Server
  • Step S202 Determine whether the button information is consistent with a preset feature code.
  • Step S203 If the button information is consistent with the feature code, play a call hold tone to the first terminal, and send a play collection and receive command to the second terminal.
  • the call hold tone is played to the first terminal by using a Media Resource Server (MRS) to send a call hold tone to the first terminal, and the call hold tone is pre-recorded audio information.
  • MRS Media Resource Server
  • the implementation process of playing the call hold tone may be that the application server sends a REINVITE request to the first terminal, and the REINVITE request carries
  • the SDP media information of the media server is included, and the SDP media information includes an IP address, a port number, an audio information, a video information, an encoding format, and the like of the first terminal.
  • the first terminal returns a response 200 OK of the REINVITE to the application server, and the response 200 OK of the REINVITE carries the SDP media information of the first terminal, and then the application server sends an ACK confirmation message to the first terminal, and pre-records the first terminal. Good audio information.
  • the process of playing the sound collection number may be first playing a specific voice, and then receiving the key information input by the second terminal according to the prompt of the voice, for example, the specific voice is “Please input the The mobile phone number dialed, and then receives the mobile phone number entered by the second terminal, such as 1234567; or the specific voice is "Please enter the service feature code and the dialed mobile phone number", and then receive the second terminal input service feature code and mobile phone number, such as *#1234567.
  • Step S204 Acquire a phone number received when the second terminal executes the sound collection and collection command.
  • the phone number received when the second terminal executes the sound collection and collection command refers to the information received in step 103.
  • the received information is 1234567
  • the above phone number is 1234567.
  • the received message is *#1234567
  • the digital part of the information is obtained, that is, 1234567.
  • Step S205 Determine whether the phone number is a specific service code.
  • the specific service code is a preset operation code, and is set to end the call transfer process, for example, the setting specific code is #33, and if the phone number is #33, the determination is successful if the phone is When the number is #34, the judgment is failed.
  • Step S206 If the phone number is a specific service code, stop playing the call hold tone to the first terminal, associate the first terminal with the second terminal, and enter a call state.
  • the first terminal is associated with the second terminal to resume the call between the first terminal and the second terminal.
  • Step S207 Transfer the first terminal to a third terminal corresponding to the phone number.
  • the recovery is performed.
  • the call between the first terminal and the second terminal can save the hardware cost of the call transfer, and can also interrupt the call transfer.
  • the receiving the button information sent by the second terminal includes:
  • the message carrying the preset feature code may be an INFO message.
  • the application server sends an INFO (*77) message to the core network CN, and when the CN receives the INFO (*77)
  • a 200 OK confirmation command is returned to the application server.
  • the core network receives the button information sent by the second terminal, and the button information is an INFO message that can be recognized by the DTMF signal conversion application server.
  • the CN compares the received key information with the above feature code, and if the received key information is *77, sends INFO (*77) to the application server, and the application server returns a 200 OK confirmation message after receiving the message sent by the CN.
  • the application server matches the preset signature.
  • the receiving the button information sent by the second terminal includes:
  • the button information is sent to the application server for comparison. For example, if the button information is received as *, an INFO (*) is sent to the application server, and if the matching is successful, the application server returns. A 200 OK command is sent to the core network, and then the button information is received as 7, then an INFO (7) is sent to the application server. If the matching is successful, the application server returns a 200 OK command to the core network, and continues to receive the button information as 7, Send an INFO (7) to the application server. If the match is successful, the application server returns a 200 OK command to the core network. After the application server matches the received INFO message, the next step is continued.
  • the transferring the first terminal to the third terminal corresponding to the phone number includes:
  • the first terminal plays the call hold tone, associates the first terminal with the third terminal, and enters a call state, otherwise stops playing the call hold tone to the first terminal, and the first terminal talks with the second terminal. Link, resume the call.
  • the playing back to the second terminal by the media server may be that the application server sends a REINVITE request to the second terminal, the REINVITE request carries the SDP media information of the media server, and then the second terminal returns a REINVITE response 200OK to the application server, where
  • the response 200 OK of the REINVITE carries the SDP media information of the second terminal, and the SDP media information includes an IP address, a port number, audio information, video information, an encoding format, and the like.
  • the application server may send a REINVITE request to the second terminal, the REINVITE Requesting to carry the SDP media information of the third terminal, and then the second terminal returns a response 200 OK of the REINVITE to the application server, the response 200 OK of the REINVITE carrying the SDP media information of the second terminal, and then sending an ACK confirmation to the second terminal and the first terminal respectively
  • the ACK acknowledgement message carries the SDP media information of the second terminal and the third terminal that carries the second terminal, so as to implement association between the second terminal and the third terminal.
  • the return message is whether the user is willing to establish a call with the first terminal, and if the return message is willing to establish a call with the first terminal, the second terminal sends a BYE request message to the application server. Then, the application server returns a response of the BYE 200 OK to the second terminal, and at this time, the second terminal exits the call.
  • the application server associates the first terminal with the third terminal, and the association process refers to the process of associating the second terminal with the third terminal.
  • the third terminal returns a response 200 OK of the REINVITE to the application server, and carries the SDP media information of the third terminal, and the application server sends a REINVITE request to the first terminal, where the REINVITE request carries the SDP media information of the third terminal, and the first terminal sends the information to the application server.
  • the response 200 OK of the REINVITE carrying the SDP media information of the first terminal itself, the application server sending an ACK confirmation message to the third terminal, carrying the SDP media information of the first terminal, and the application server sending an ACK confirmation to the first terminal
  • the message carries the SDP media information of the third terminal. Otherwise, the call holding tone is stopped for the first terminal, and the first terminal is associated with the second terminal to resume the call.
  • the embodiment of the present invention provides a method for call forwarding, and the specific process is as follows:
  • the first terminal is in a call state with the second terminal, and the second terminal may be a calling party or a called party.
  • the second terminal presses the button during the call, and the core network reports the content of the button to the AS through the INFO message, and the AS returns a 200 OK response of the INFO to the second terminal.
  • the AS matches the key content to a preset feature code, such as *77, the AS puts a call hold tone on the first terminal, and plays a tone on the second terminal.
  • the implementation process is that the AS sends a REINVITE request to the first terminal, and carries the SDP media information of the media server MRS, where the SDP media information includes an IP address, a port number, a media capability such as an audio, a video, an encoding format, and the like.
  • the first terminal returns a response 200 OK of the REINVITE to the AS, and the response 200 OK of the REINVITE carries the SDP media information of the first terminal, where the SDP media information includes the IP address, port number, media capability of the first terminal, such as audio, video, and encoding format. Wait. After the AS sends an ACK acknowledgement message to the first terminal, and plays a call hold tone to the first terminal.
  • AS wants to The second terminal plays a sound receiving number, the audio in the playing sound may be a null sound or a pre-recorded audio signal, and the AS sends a REINVITE request to the second terminal, where the REINVITE request carries the SDP media information of the media server MRS.
  • the SDP media information includes an IP address, a port number, and media capabilities such as audio, video, encoding format, and the like.
  • the second terminal returns a response 200 OK of the REINVITE to the AS, and carries the SDP media information of the second terminal, and then the AS sends an ACK acknowledgement message to the second terminal, and the second terminal broadcasts a receive number, and the play content may be a null tone. It can also be pre-recorded audio information.
  • the content of the received number input by the second terminal is a number or a specific service code plus a number, and then the telephone number of the third terminal is obtained from the information input by the second terminal.
  • the AS stops the charging and receiving of the second terminal, and calls the third terminal corresponding to the telephone number.
  • the process may be: sending an INVITE request to the third terminal, and after the third terminal rings, returning the INVITE response 180ring to the AS.
  • the AS wants to put back a ring tone to the second terminal, and sends a REINVITE request to the second terminal, where the REINVITE request carries the SDP media information of the MRS.
  • the second terminal returns a response 200 OK of the REINVITE to the AS, and carries the SDP media information of the second terminal.
  • the AS then sends an ACK acknowledgement message to the second terminal and plays a ringback tone to the second terminal.
  • the third terminal is turned on, and the AS returns the INVITE response 200 OK, and carries the SDP media information of the third terminal.
  • the AS stops playing the ring back tone to the second terminal, and associates the third terminal with the second terminal.
  • the association process may be that the AS sends a REINVITE request to the second terminal, carrying the SDP media information of the third terminal, and the second terminal returns to the AS.
  • the REINVITE response is 200 OK, carrying the SDP media information of the second terminal.
  • the AS sends an ACK acknowledgement message to the second terminal, and the AS sends an ACK acknowledgement message to the third terminal, carrying the SDP media information of the second terminal, and the second terminal and the third terminal complete the media negotiation and enter the call state.
  • the second terminal queries whether the second terminal is willing to talk to the first terminal.
  • the third terminal If the third terminal is willing, the second terminal hangs up, and the second terminal sends a BYE request message to the AS.
  • the AS receives the BYE request message and returns a BYIE response 200 OK to the BYE request message, and the second terminal exits the call.
  • the AS associates the first terminal with the third terminal, and the association process may be that the AS sends a REINVITE request to the third terminal, where the REINVITE request does not carry the SDP media information.
  • the third terminal returns a response 200 OK of the REINVITE to the AS, and carries the third terminal. SDP media information.
  • the AS sends a REINVITE request to the first terminal, and the REINVITE requests the SDP media information carried by the third terminal, and the first terminal returns a REINVITE response 200 OK to the AS, and carries the SDP media information of the first terminal.
  • the AS sends an ACK acknowledgement message to the third terminal, and carries the SDP media information of the first terminal.
  • the AS sends an ACK acknowledgement message to the first terminal, that is, the first terminal associates with the third terminal, and enters a call state. At this time, the second terminal exits, and the first terminal and the third terminal talk, and the inquiry turn function is implemented.
  • the second terminal and the third terminal are in a call by determining the key information of the terminal to perform feature code matching and acquiring the telephone number of the third terminal, and then implementing the first terminal by querying the call between the second terminal and the third terminal.
  • the call connection with the third terminal saves the hardware cost of the call inquiry transfer and provides convenience to the user.
  • an embodiment of the present invention provides a device 600 for call forwarding, including:
  • the button receiving module 601 is configured to receive the button information sent by the second terminal when the first terminal talks with the second terminal.
  • the first determining module 602 is configured to determine whether the button information is consistent with a preset feature code
  • the operation module 606 is configured to: if the button information is consistent with the feature code, play a call hold tone to the first terminal, and send a play release command to the second terminal;
  • the obtaining module 604 is configured to acquire a phone number received when the second terminal executes the sound collection and receiving command;
  • the switching module 605 is configured to transfer the first terminal to a third terminal corresponding to the phone number.
  • the button receiving module 601 in the device 600 includes:
  • the first sending unit 6011 is configured to send a message carrying a preset feature code to the core network CN, where the CN receives the button information sent by the second terminal.
  • the first receiving unit 6012 is configured to receive, by the CN, key information that is successfully matched with the feature code.
  • the button receiving module 601 in the device 600 includes:
  • the second receiving unit 6013 is configured to receive button information sent by the core network CN, where the button information is sent by the second terminal to the button information of the CN.
  • the apparatus 600 further includes:
  • the second determining module 606 is configured to determine whether the phone number is a specific service code
  • the association module 607 is configured to stop playing the call hold tone to the first terminal, and associate the first terminal with the second terminal to enter a call state if the phone number is a specific service code.
  • the switching module 605 in the device 600 includes:
  • a calling unit 6051 configured to call the third terminal by using the telephone number
  • the playing unit 6052 is configured to: when the third terminal rings, play back a ringtone to the second terminal by using a media server;
  • the operating unit 6053 is configured to stop playing back the ringtone to the second terminal when the third terminal is in the answering call, and associate the second terminal with the third terminal;
  • the second sending unit 6054 is configured to send an inquiry message of the second terminal to the third terminal; the inquiry message is whether it is willing to establish a conversation with the first terminal;
  • the third receiving unit 6055 is configured to receive a return message sent by the third terminal
  • the determining unit 6056 is configured to determine whether the return message is a willingness to establish a call with the first terminal;
  • the call association unit 6057 is configured to stop playing the call hold tone to the first terminal, and associate the first terminal with the third terminal to enter, if the return message is that the user is willing to establish a call with the first terminal. In the call state, otherwise, the call holding tone is stopped for the first terminal, and the first terminal is associated with the second terminal to resume the call.
  • the call forwarding device 600 can implement the various processes implemented in the method embodiments of FIG. 1 to FIG. 5. To avoid repetition, details are not described herein again.
  • the call forwarding device 600 can achieve the technical effect of saving the hardware cost of call forwarding.
  • buttons information are consistent with the feature code, playing a call hold tone to the first terminal, and sending a play collection and reception command to the second terminal;
  • the receiving the button information sent by the second terminal includes:
  • the receiving the button information sent by the second terminal includes:
  • the method before the transferring the first terminal to the third terminal corresponding to the phone number, the method further includes:
  • the call holding tone is stopped for the first terminal, and the first terminal is associated with the second terminal to enter a call state.
  • the transferring the first terminal to the third terminal corresponding to the phone number includes:
  • the inquiry message is whether it is willing to establish a conversation with the first terminal;
  • the return message is that the user is willing to establish a call with the first terminal, stop playing the call hold tone to the first terminal, associate the first terminal with the third terminal, and enter a call state, otherwise stop the call.
  • the first terminal plays a call hold tone, associates the first terminal with the second terminal, and resumes the call.
  • the storage medium is, for example, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.
  • the first terminal talks with the second terminal, receives the button information sent by the second terminal, and determines whether the button information is consistent with a preset feature code, if the button And the information is matched with the feature code, and the call hold tone is played to the first terminal, and the play and receive command is sent to the second terminal, and the second terminal is configured to receive when the play and receive command is executed.
  • the method does not need a terminal supporting the two-way call, and does not need the terminal to support the ability to send a specific message, the specific message
  • the session information between the first terminal and the second terminal and the session information between the second terminal and the third terminal are achieved, and the technical effect of saving the hardware cost of the call transfer is achieved.

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Abstract

本发明提供一种呼叫转移方法和装置，包括当第一终端与第二终端通话时，接收所述第二终端发送的按键信息；判断所述按键信息是否与预先设置的特征码一致；若所述按键信息与所述特征码一致，则对所述第一终端播放呼叫保持音，并向所述第二终端发送放音收号命令；获取所述第二终端执行所述放音收号命令时接收到的电话号码；将所述第一终端转接至所述电话号码对应的第三终端，解决了现有技术实现呼叫转接的硬件成本高，达到了节约呼叫转接的硬件成本的技术效果。

Description

一种呼叫转接的方法和装置 技术领域
本发明涉及通信技术领域，特别涉及一种呼叫转接的方法和装置。
背景技术
随着科学技术的发展，呼叫转接技术也得到发展，特别是广泛应用于办公室当中，例如，第一终端与第二终端通话后，第二终端保持第一终端，第二终端呼叫第三终端，第三终端摘机后即实现第一终端和第三终端通话。目前，呼叫转接技术主要是终端处于二路通话后发送特定请求给第二终端的AS(Application Server，应用服务器)，该特定消息包括第一终端与第二终端之间的会话信息以及第二终端与第三终端之间的会话信息，然后AS释放第二终端以实现第一终端与第三终端关联，实现呼叫转接。但是该呼叫转接技术要求第二终端的终端既要实现二路通话，即实现第一终端和第二终端的通话以及用第二终端和第三终端的通话；又要支持发送上述特定请求的能力，但是一般的终端都不支持二路通话和支持发送上述特定请求的能力。可见，现有技术实现呼叫转接的硬件成本高。
发明内容
本发明实施例的目的在于提供一种呼叫转接的方法和装置，解决了现有技术实现呼叫转接成本高的问题。
为了达到上述目的，本发明实施例提供一种呼叫转接的方法，包括：
当第一终端与第二终端通话时，接收所述第二终端发送的按键信息；
判断所述按键信息是否与预先设置的特征码一致；
若所述按键信息与所述特征码一致，则对所述第一终端播放呼叫保持音，并向所述第二终端发送放音收号命令；
获取所述第二终端执行所述放音收号命令时接收到的电话号码；
将所述第一终端转接至所述电话号码对应的第三终端。
本发明实施例提供一种呼叫转接的装置，包括：
按键接收模块，设置为当第一终端与第二终端通话时，接收所述第二终端发送的按键信息；
第一判断模块，设置为判断所述按键信息是否与预先设置的特征码一致；
操作模块，设置为若所述按键信息与所述特征码一致，则对所述第一终端播放呼叫保持音，并向所述第二终端发送放音收号命令；
获取模块，设置为获取所述第二终端执行所述放音收号命令时接收到的电话号码；
转接模块，设置为将所述第一终端转接至所述电话号码对应的第三终端。
本发明实施例还提供一种计算机存储介质，所述计算机存储介质中存储有计算机可执行的一个或多个程序，所述一个或多个程序被所述计算机执行时使所述计算机执行如上述提供的一种呼叫转接的方法。
上述技术方案中的一个技术方案具有如下优点或有益效果：
当第一终端与第二终端通话时，接收所述第二终端发送的按键信息，判断所述按键信息是否与预先设置的特征码一致，若所述按键信息与所述特征码一致，则对所述第一终端播放呼叫保持音，并向所述第二终端发送放音收号命令，获取所述第二终端执行所述放音收号命令时接收到的电话号码，将所述第一终端转接至所述电话号码对应的第三终端，该方法不需要支持二路通话的终端，同时也不需要终端支持发送特定消息的能力，该特定消息包括第一终端与第二终端之间的会话信息以及第二终端与第三终端之间的会话信息，达到了节约呼叫转接的硬件成本的技术效果。
附图说明
图1为本发明实施例提供的一种呼叫转接的方法的流程图；
图2为本发明实施例提供的另一种呼叫转接的方法的流程图；
图3为本发明实施例提供的应用服务器接收所述第二终端发送的按键信息流程示意图之一；
图4为本发明实施例提供的应用服务器接收所述第二终端发送的按键信息流程示意图之二；
图5本发明实施例提供的还一种呼叫转接的方法的流程图；
图6为本发明实施例提供的一种呼叫转接的装置的结构图；
图7为本发明实施例提供的一种呼叫转接的装置中的按键接收模块结构图之一；
图8为本发明实施例提供的一种呼叫转接的装置中的按键接收模块结构图之二；
图9为本发明实施例提供的另一种呼叫转接的装置的结构图；
图10为本发明实施例提供的一种呼叫转接的装置中的转接模块结构图。
具体实施方式
为使本发明要解决的技术问题、技术方案和优点更加清楚，下面将结合附图及具体实施例进行详细描述。
如图1所示，本发明实施例提供一种呼叫转接的方法，包括以下步骤：
步骤S101、当第一终端与第二终端通话时，接收所述第二终端发送的按键信息。
在该步骤中，所述第二终端发送的按键信息为拨号按键的组合，例如，该按键信息可以是*77、*88、#76、*#66等等。终端上用户输入按键信息为DTMF信号，当用户输入按键信息后，核心网(Core Network，简称CN)将上述DTMF信号转化为应用服务器(Application Server，简称AS) 可以识别的INFO消息，该应用服务器从上述INFO消息中识别特征码。
步骤S102、判断所述按键信息是否与预先设置的特征码一致。
步骤S103、若所述按键信息与所述特征码一致，则对所述第一终端播放呼叫保持音，并向所述第二终端发送放音收号命令。
在该步骤中，对所述第一终端播放呼叫保持音是通过媒体服务器(Media Resource Server，简称MRS)向所述第一终端发送呼叫保持音，该呼叫保持音为事先录制好的音频信息。播放呼叫保持音的实现过程可以是应用服务器向第一终端发送一个REINVITE请求，该REINVITE请求携带了媒体服务器的SDP媒体信息，该SDP媒体信息包括第一终端的IP地址、端口号、音频信息、视频信息、编码格式等等。然后第一终端向所述应用服务器返回REINVITE的响应200OK，该REINVITE的响应200OK携带了第一终端的SDP媒体信息，然后应用服务器向第一终端发送一个ACK确认信息，对第一终端播放预先录制好的音频信息。
向所述第二终端发送放音收号命令，该放音收号可以是先播放特定语音，然后根据语音的提示接收第二终端输入的按键信息，例如特定语音为“请输入您要拨打的手机号码”，然后接收第二终端输入的手机号码，如1234567；或者特定语音为“请输入业务特征码和拨打的手机号码”，然后接收第二终端输入业务特征码和手机号码，如*#1234567。
步骤S104、获取所述第二终端执行所述放音收号命令时接收到的电话号码。
在该步骤中，所述第二终端执行所述放音收号命令时接收到的电话号码参见步骤103中接收到的信息，例如，当接收到的信息为1234567时，则上述电话号码为1234567，当接收到的信息为*#1234567，则获取该信息中的数字部分，即1234567。
步骤S105、将所述第一终端转接至所述电话号码对应的第三终端。
需要说明的是，本实施例的执行主体可以是第一终端的应用服务器，也可以是第二终端的应用服务器，例如，当输入按键信息是第一终端时， 执行主体是第一终端的应用服务器，当输入按键信息是第二终端时，执行主体是第二终端的应用服务器。
本实施例，当第一终端与第二终端通话时，接收所述第二终端发送的按键信息，判断所述按键信息是否与预先设置的特征码一致，若所述按键信息与所述特征码一致，则对所述第一终端播放呼叫保持音，并向所述第二终端发送放音收号命令，获取所述第二终端执行所述放音收号命令时接收到的电话号码，将所述第一终端转接至所述电话号码对应的第三终端，该方法不需要支持二路通话的终端，同时也不需要终端支持发送特定消息的能力，该特定消息包括第一终端与第二终端之间的会话信息以及第二终端与第三终端之间的会话信息，达到了节约呼叫转接的硬件成本的技术效果。
如图2所示，本发明实施例提供另一种呼叫转接的方法，包括以下步骤：
步骤S201、当第一终端与第二终端通话时，接收所述第二终端发送的按键信息。
在该步骤中，所述第二终端发送的按键信息为拨号按键的组合，例如，该按键信息可以是*77、*88、#76、*#66等等。终端上用户输入按键信息为DTMF信号，当用户输入按键信息后，核心网(Core Network，简称CN)将上述DTMF信号转化为应用服务器(Application Server，简称AS)可以识别的INFO消息，该应用服务器从上述INFO消息中识别特征码。
步骤S202、判断所述按键信息是否与预先设置的特征码一致。
步骤S203、若所述按键信息与所述特征码一致，则对所述第一终端播放呼叫保持音，并向所述第二终端发送放音收号命令。
在该步骤中，对所述第一终端播放呼叫保持音是通过媒体服务器(Media Resource Server，简称MRS)向所述第一终端发送呼叫保持音，该呼叫保持音为事先录制好的音频信息。播放呼叫保持音的实现过程可以是应用服务器向第一终端发送一个REINVITE请求，该REINVITE请求携 带了媒体服务器的SDP媒体信息，该SDP媒体信息包括第一终端的IP地址、端口号、音频信息、视频信息、编码格式等等。然后第一终端向所述应用服务器返回REINVITE的响应200OK，该REINVITE的响应200OK携带了第一终端的SDP媒体信息，然后应用服务器向第一终端发送一个ACK确认信息，对第一终端播放预先录制好的音频信息。
向所述第二终端发送放音收号命令，该放音收号的过程可以是先播放特定语音，然后根据语音的提示接收第二终端输入的按键信息，例如特定语音为“请输入您要拨打的手机号码”，然后接收第二终端输入的手机号码，如1234567；或者特定语音为“请输入业务特征码和拨打的手机号码”，然后接收第二终端输入业务特征码和手机号码，如*#1234567。
步骤S204、获取所述第二终端执行所述放音收号命令时接收到的电话号码。
在该步骤中，所述第二终端执行所述放音收号命令时接收到的电话号码参见步骤103中接收到的信息，例如，当接收到的信息为1234567时，则上述电话号码为1234567，当接收到的信息为*#1234567，则获取该信息中的数字部分，即1234567。
步骤S205、判断所述电话号码是否为特定业务码。
在该步骤中，特定业务码为预先设置的操作码，设置为结束呼叫转接过程的，例如设置特定码为#33，若所述电话号码为#33时，则判断成功，若所述电话号码为#34时，则判断失败。
步骤S206、若所述电话号码是特定业务码，则停止对所述第一终端播放呼叫保持音，将所述第一终端与所述第二终端通话关联，进入通话状态。
该步骤中，将所述第一终端与所述第二终端通话关联即恢复第一终端与第二终端之间的通话。
步骤S207、将所述第一终端转接至所述电话号码对应的第三终端。
该实施例中，通过设置匹配特定业务码的步骤，当匹配不成功时则恢 复第一终端与第二终端之间的通话，既可以节约呼叫转接的硬件成本，同时也可以方便中断呼叫转接。
可选的，如图3所示，所述接收所述第二终端发送的按键信息包括：
发送携带预先设置的特征码的消息给核心网络CN，所述CN接收所述第二终端发送的按键信息，接收所述CN发送的与所述特征码匹配成功的按键信息。
其中，所述携带预先设置的特征码的消息可以是INFO消息，例如，当特征码为*77时，应用服务器发送INFO(*77)消息给核心网CN，当CN收到INFO(*77)消息时，则返回一个200OK的确认命令给应用服务器。核心网接收所述第二终端发送的按键信息，该按键信息是经过DTMF信号转换应用服务器可以识别的INFO消息。然后CN对接收到的按键信息与上述特征码进行比较，若接收到的按键信息为*77则发送INFO(*77)给应用服务器，应用服务器收到CN发送的消息后返回一个200OK确认消息，应用服务器收到INFO消息后与预先设置的特征码匹配。
可选的，如图4所示，所述接收所述第二终端发送的按键信息包括：
接收核心网络CN发送的按键信息，所述按键信息由所述第二终端发送给所述CN的按键信息。
其中核心网每接收到一个按键信息，就将该按键信息发送给应用服务器进行比较，例如，接收到按键信息为*，则发送一个INFO(*)给应用服务器，若匹配成功，则应用服务器返回一个200OK命令给核心网，然后接收到按键信息为7，则发送一个INFO(7)给应用服务器，若匹配成功，则应用服务器返回一个200OK命令给核心网，继续接收到按键信息为7，则发送一个INFO(7)给应用服务器，若匹配成功，则应用服务器返回一个200OK命令给核心网，应用服务器对接收到的INFO消息都匹配成功后继续下一步操作。
可选的，所述将所述第一终端转接至所述电话号码对应的第三终端包括：
通过所述电话号码呼叫所述第三终端；当所述第三终端振铃时，通过媒体服务器向所述第二终端播放回铃声；当所述第三终端处于接听电话时，停止向所述第二终端播放回铃声，将所述第二终端与第三终端通话关联；发送所述第二终端的询问消息给所述第三终端；所述询问消息为是否愿意与所述第一终端建立通话；接收所述第三终端发送的返回消息；判断所述返回消息为是否愿意与所述第一终端建立通话；若所述返回消息为愿意与所述第一终端建立通话，则停止对所述第一终端播放呼叫保持音，将所述第一终端与第三终端通话关联，进入通话状态，否则停止对所述第一终端播放呼叫保持音，将所述第一终端与第二终端通话关联，恢复通话。
其中，应用服务器停止对第二终端放音收号时呼叫所述号码对应的第三终端，呼叫的操作过程可以是应用服务器发送一个发送INVITE请求给第三终端，当第三终端振铃时，向上述应用服务器返回一个INVITE的响应180ring。通过媒体服务器向所述第二终端播放回铃声可以是应用服务器向第二终端发送一个REINVITE请求，该REINVITE请求携带媒体服务器的SDP媒体信息，然后第二终端向应用服务器返回REINVITE的响应200OK，该REINVITE的响应200OK携带第二终端的SDP媒体信息，上述SDP媒体信息包括IP地址、端口号、音频信息、视频信息、编码格式等等。
所述当所述第三终端处于接听电话时，停止向所述第二终端播放回铃声，将所述第二终端与第三终端通话关联可以是应用服务器向第二终端发送REINVITE请求，该REINVITE请求携带第三终端的SDP媒体信息，然后第二终端向应用服务器返回REINVITE的响应200OK，该REINVITE的响应200OK携带第二终端的SDP媒体信息，接着分别向第二终端和第一终端发送ACK确认消息，该ACK确认消息携带第二终端和第三终端的携带第二终端的SDP媒体信息，以实现第二终端和第三终端的关联。
发送所述第二终端的询问消息给所述第三终端，所述询问消息为是否愿意与所述第一终端建立通话，接收所述第三终端发送的返回消息；判断 所述返回消息为是否愿意与所述第一终端建立通话，若所述返回消息为愿意与所述第一终端建立通话，第二终端向应用服务器发送BYE请求消息。然后应用服务器向第二终端返回BYE的响应200OK，此时，第二终端退出通话。
应用服务器将第一终端和第三终端关联，该关联过程参照第二终端与第三终端关联过程。第三终端向应用服务器返回REINVITE的响应200OK，携带第三终端自身的SDP媒体信息，应用服务器向第一终端发送REINVITE请求，该REINVITE请求携带第三终端的SDP媒体信息，第一终端向应用服务器返回REINVITE的响应200OK，该REINVITE的响应200OK携带第一终端自身的SDP媒体信息，应用服务器向第三终端发送ACK确认消息，携带第一终端的SDP媒体信息，应用服务器向第一终端发送ACK确认消息，携带第三终端的SDP媒体信息。否则停止对所述第一终端播放呼叫保持音，将所述第一终端与第二终端通话关联，恢复通话。
如图5所示，本发明实施例提供还一种呼叫转接的方法，具体过程如下：
第一终端与第二终端处于通话状态，第二终端可以是主叫也可以是被叫。第二终端在通话中按键，核心网将按键内容通过INFO消息上报给AS，AS向第二终端返回INFO的200OK响应。AS匹配到按键内容为预先设置的特征码，如*77，AS对第一终端放呼叫保持提示音，对第二终端放音收号。实现过程为AS向第一终端发送REINVITE请求，携带媒体服务器MRS的SDP媒体信息，该SDP媒体信息包括IP地址、端口号、媒体能力如音频、视频，编码格式等等。
第一终端向AS返回REINVITE的响应200OK，该REINVITE的响应200OK携带第一终端的SDP媒体信息，该SDP媒体信息包括第一终端的IP地址、端口号、媒体能力如音频、视频，编码格式等等。完后AS向第一终端发送ACK确认消息，并对第一终端播放呼叫保持提示音。AS欲对 第二终端放音收号，该放音中的音频可以是空音也可以是预先录制好的音频信号，桀纣AS向第二终端发送REINVITE请求，该REINVITE请求携带媒体服务器MRS的SDP媒体信息，该SDP媒体信息包括IP地址、端口号、媒体能力如音频、视频，编码格式等等。
第二终端向AS返回REINVITE的响应200OK，携带第二终端的SDP媒体信息，然后AS向第二终端发送ACK确认消息，并对第二终端放音收号，该放音内容可为空音，也可以是预先录制好的音频信息。第二终端输入的收号内容为号码或特定业务码加号码，然后从第二终端输入的信息获取第三终端的电话号码。AS停止对第二终端放音收号，并呼叫该电话号码对应的第三终端，过程可以是对第三终端发送INVITE请求，第三终端振铃后，向AS返回INVITE的响应180ring。
AS欲对第二终端放回铃音，并对第二终端发送REINVITE请求，该REINVITE请求携带MRS的SDP媒体信息。第二终端向AS返回REINVITE的响应200OK，携带第二终端的SDP媒体信息。然后AS向第二终端发送ACK确认消息，并对第二终端播放回铃音。第三终端接通，AS返回INVITE的响应200OK，携带第三终端的SDP媒体信息。AS停止对第二终端播放回铃音，并将第三终端与第二终端关联，关联过程可以是AS向第二终端发送REINVITE请求，携带第三终端的SDP媒体信息，第二终端向AS返回REINVITE的响应200OK，携带第二终端的SDP媒体信息。AS向第二终端发送ACK确认消息，AS向第三终端发送ACK确认消息，携带第二终端的SDP媒体信息，第二终端和第三终端完成媒体协商，进入通话状态。第二终端询问第二终端是否愿意与第一终端通话。
若第三终端愿意，则第二终端挂机，第二终端向AS发送BYE请求消息。AS接收到BYE请求消息向BYE请求消息返回BYE的响应200OK，第二终端退出通话。AS将第一终端与第三终端关联，该关联过程可以是AS向第三终端发送REINVITE请求，该REINVITE请求不携带SDP媒体信息。第三终端向AS返回REINVITE的响应200OK，携带第三终端的 SDP媒体信息。AS向第一终端发送REINVITE请求，该REINVITE请求第三终端携带的SDP媒体信息第一终端向AS返回REINVITE的响应200OK，携带第一终端的SDP媒体信息。
AS向第三终端发送ACK确认消息，携带第一终端的SDP媒体信息，AS向第一终端发送ACK确认消息即第一终端和第三终端关联，进入通话状态。此时第二终端退出，第一终端和第三终端通话，实现了询问转功能。
该实施例，通过判断终端的按键信息进行特征码匹配和获取第三终端的电话号码实现第二终端与第三终端的通话，然后通过第二终端与第三终端的询问通话来实现第一终端与第三终端的通话连接，节约了呼叫询问转接的硬件成本，同时给用户提供了方便。
如图6所示，本发明实施例提供一种呼叫转接的装置600，包括：
按键接收模块601，设置为当第一终端与第二终端通话时，接收所述第二终端发送的按键信息。
第一判断模块602，设置为判断所述按键信息是否与预先设置的特征码一致；
操作模块606，设置为若所述按键信息与所述特征码一致，则对所述第一终端播放呼叫保持音，并向所述第二终端发送放音收号命令；
获取模块604，设置为获取所述第二终端执行所述放音收号命令时接收到的电话号码；
转接模块605，设置为将所述第一终端转接至所述电话号码对应的第三终端。
可选的，如图7所示，装置600中的按键接收模块601包括：
第一发送单元6011，设置为发送携带预先设置的特征码的消息给核心网络CN，所述CN接收所述第二终端发送的按键信息。
第一接收单元6012，设置为接收所述CN发送的与所述特征码匹配成功的按键信息。
可选的，如图8所示，装置600中的按键接收模块601包括：
第二接收单元6013，设置为接收核心网络CN发送的按键信息，所述按键信息由所述第二终端发送给所述CN的按键信息。
可选的，如图9所示，装置600还包括：
第二判断模块606，设置为判断所述电话号码是否为特定业务码；
关联模块607，设置为若所述电话号码是特定业务码，则停止对所述第一终端播放呼叫保持音，将所述第一终端与所述第二终端通话关联，进入通话状态。
可选的，如图10所述，装置600中的转接模块605包括：
呼叫单元6051，设置为通过所述电话号码呼叫所述第三终端；
播放单元6052，设置为当所述第三终端振铃时，通过媒体服务器向所述第二终端播放回铃声；
操作单元6053，设置为当所述第三终端处于接听电话时，停止向所述第二终端播放回铃声，将所述第二终端与第三终端通话关联；
第二发送单元6054，设置为发送所述第二终端的询问消息给所述第三终端；所述询问消息为是否愿意与所述第一终端建立通话；
第三接收单元6055，设置为接收所述第三终端发送的返回消息；
判断单元6056，设置为判断所述返回消息为是否愿意与所述第一终端建立通话；
通话关联单元6057，设置为若所述返回消息为愿意与所述第一终端建立通话，则停止对所述第一终端播放呼叫保持音，将所述第一终端与第三终端通话关联，进入通话状态，否则停止对所述第一终端播放呼叫保持音，将所述第一终端与第二终端通话关联，恢复通话。
呼叫转移装置600能够实现图1至图5的方法实施例中实现的各个过程，为避免重复，这里不再赘述。呼叫转移装置600可以达到了节约呼叫转接的硬件成本的技术效果。
本领域普通技术人员可以理解实现上述实施例方法的全部或者部分步骤是可以通过程序指令相关的硬件来完成，所述的程序可以存储于一计 算机可读取介质中，该程序在执行时，包括以下步骤：
当第一终端与第二终端通话时，接收所述第二终端发送的按键信息；
判断所述按键信息是否与预先设置的特征码一致；
若所述按键信息与所述特征码一致，则对所述第一终端播放呼叫保持音，并向所述第二终端发送放音收号命令；
获取所述第二终端执行所述放音收号命令时接收到的电话号码；
将所述第一终端转接至所述电话号码对应的第三终端。
可选的，所述接收所述第二终端发送的按键信息包括：
发送携带预先设置的特征码的消息给核心网络CN，所述CN接收所述第二终端发送的按键信息；
接收所述CN发送的与所述特征码匹配成功的按键信息。
可选的，所述接收所述第二终端发送的按键信息包括：
接收核心网络CN发送的按键信息，所述按键信息由所述第二终端发送给所述CN的按键信息。
可选的，所述将所述第一终端转接至所述电话号码对应的第三终端之前还包括：
判断所述电话号码是否为特定业务码；
若所述电话号码是特定业务码，则停止对所述第一终端播放呼叫保持音，将所述第一终端与所述第二终端通话关联，进入通话状态。
可选的，所述将所述第一终端转接至所述电话号码对应的第三终端包括：
通过所述电话号码呼叫所述第三终端；
当所述第三终端振铃时，通过媒体服务器向所述第二终端播放回铃声；
当所述第三终端处于接听电话时，停止向所述第二终端播放回铃声，将所述第二终端与第三终端通话关联；
发送所述第二终端的询问消息给所述第三终端；所述询问消息为是否愿意与所述第一终端建立通话；
接收所述第三终端发送的返回消息；
判断所述返回消息为是否愿意与所述第一终端建立通话；
若所述返回消息为愿意与所述第一终端建立通话，则停止对所述第一终端播放呼叫保持音，将所述第一终端与第三终端通话关联，进入通话状态，否则停止对所述第一终端播放呼叫保持音，将所述第一终端与第二终端通话关联，恢复通话。
所述的存储介质，如只读存储器(Read-Only Memory，简称ROM)、随机存取存储器(Random Access Memory，简称RAM)、磁碟或者光盘等。
以上所述是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明所述原理的前提下，还可以作出若干改进和润饰，这些改进和润饰也应视为本发明的保护范围。
工业实用性
本发明实施例提供的上述技术方案，当第一终端与第二终端通话时，接收所述第二终端发送的按键信息，判断所述按键信息是否与预先设置的特征码一致，若所述按键信息与所述特征码一致，则对所述第一终端播放呼叫保持音，并向所述第二终端发送放音收号命令，获取所述第二终端执行所述放音收号命令时接收到的电话号码，将所述第一终端转接至所述电话号码对应的第三终端，该方法不需要支持二路通话的终端，同时也不需要终端支持发送特定消息的能力，该特定消息包括第一终端与第二终端之间的会话信息以及第二终端与第三终端之间的会话信息，达到了节约呼叫转接的硬件成本的技术效果。

Claims (10)

  1. 一种呼叫转接的方法，包括：
    当第一终端与第二终端通话时，接收所述第二终端发送的按键信息；
    判断所述按键信息是否与预先设置的特征码一致；
    若所述按键信息与所述特征码一致，则对所述第一终端播放呼叫保持音，并向所述第二终端发送放音收号命令；
    获取所述第二终端执行所述放音收号命令时接收到的电话号码；
    将所述第一终端转接至所述电话号码对应的第三终端。
  2. 根据权利要求1所述的方法，其中，所述接收所述第二终端发送的按键信息包括：
    发送携带预先设置的特征码的消息给核心网络CN，所述CN接收所述第二终端发送的按键信息；
    接收所述CN发送的与所述特征码匹配成功的按键信息。
  3. 根据权利要求1所述的方法，其中，所述接收所述第二终端发送的按键信息包括：
    接收核心网络CN发送的按键信息，所述按键信息由所述第二终端发送给所述CN的按键信息。
  4. 根据权利要求1所述的方法，其中，所述将所述第一终端转接至所述电话号码对应的第三终端之前还包括：
    判断所述电话号码是否为特定业务码；
    若所述电话号码是特定业务码，则停止对所述第一终端播放呼叫保持音，将所述第一终端与所述第二终端通话关联，进入通话状态。
  5. 根据权利要求1-4中任一项所述的方法，其中，所述将所述第一终端转接至所述电话号码对应的第三终端包括：
    通过所述电话号码呼叫所述第三终端；
    当所述第三终端振铃时，通过媒体服务器向所述第二终端播放回铃声；
    当所述第三终端处于接听电话时，停止向所述第二终端播放回铃声，将所述第二终端与第三终端通话关联；
    发送所述第二终端的询问消息给所述第三终端；所述询问消息为是否愿意与所述第一终端建立通话；
    接收所述第三终端发送的返回消息；
    判断所述返回消息为是否愿意与所述第一终端建立通话；
    若所述返回消息为愿意与所述第一终端建立通话，则停止对所述第一终端播放呼叫保持音，将所述第一终端与第三终端通话关联，进入通话状态，否则停止对所述第一终端播放呼叫保持音，将所述第一终端与第二终端通话关联，恢复通话。
  6. 一种呼叫转接的装置，包括：
    按键接收模块，设置为当第一终端与第二终端通话时，接收所述第二终端发送的按键信息；
    第一判断模块，设置为判断所述按键信息是否与预先设置的特征码一致；
    操作模块，设置为若所述按键信息与所述特征码一致，则对所述第一终端播放呼叫保持音，并向所述第二终端发送放音收号命令；
    获取模块，设置为获取所述第二终端执行所述放音收号命令时接收到的电话号码；
    转接模块，设置为将所述第一终端转接至所述电话号码对应的第三终端。
  7. 根据权利要求6所述的装置，其中，所述按键接收模块包括：
    第一发送单元，设置为发送携带预先设置的特征码的消息给核心网络CN，所述CN接收所述第二终端发送的按键信息；
    第一接收单元，设置为接收所述CN发送的与所述特征码匹配成功的按键信息。
  8. 根据权利要求6所述的装置，其中，所述按键接收模块包括：
    第二接收单元，设置为接收核心网络CN发送的按键信息，所述按键信息由所述第二终端发送给所述CN的按键信息。
  9. 根据权利要求6所述的装置，其中，还包括：
    第二判断模块，判断所述电话号码是否为特定业务码；
    关联模块，设置为若所述电话号码是特定业务码，则停止对所述第一终端播放呼叫保持音，将所述第一终端与所述第二终端通话关联，进入通话状态。
  10. 根据权利要求6-9中任一项所述的装置，其中，转接模块包括：
    呼叫单元，设置为通过所述电话号码呼叫所述第三终端；
    播放单元，设置为当所述第三终端振铃时，通过媒体服务器向所述第二终端播放回铃声；
    操作单元，设置为当所述第三终端处于接听电话时，停止向所述第二终端播放回铃声，将所述第二终端与第三终端通话关联；
    第二发送单元，设置为发送所述第二终端的询问消息给所述第三终端；所述询问消息为是否愿意与所述第一终端建立通话；
    第三接收单元，设置为接收所述第三终端发送的返回消息；
    判断单元，设置为判断所述返回消息为是否愿意与所述第一终端建立通话；
    通话关联单元，设置为若所述返回消息为愿意与所述第一终端建立通话，则停止对所述第一终端播放呼叫保持音，将所述第一终端与第三终端通话关联，进入通话状态，否则停止对所述第一终端播放呼叫保持音，将所述第一终端与第二终端通话关联，恢复通话。
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