WO2012151909A1 - 一种点击拨号业务中实现三方通话的方法及系统 - Google Patents

一种点击拨号业务中实现三方通话的方法及系统 Download PDF

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Publication number
WO2012151909A1
WO2012151909A1 PCT/CN2011/082373 CN2011082373W WO2012151909A1 WO 2012151909 A1 WO2012151909 A1 WO 2012151909A1 CN 2011082373 W CN2011082373 W CN 2011082373W WO 2012151909 A1 WO2012151909 A1 WO 2012151909A1
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WIPO (PCT)
Prior art keywords
logical
ctd
call
called
module
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PCT/CN2011/082373
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English (en)
French (fr)
Inventor
屈天喜
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中兴通讯股份有限公司
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Publication of WO2012151909A1 publication Critical patent/WO2012151909A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/40—Support for services or applications
    • H04L65/403—Arrangements for multi-party communication, e.g. for conferences
    • H04L65/4053—Arrangements for multi-party communication, e.g. for conferences without floor control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066—Session management
    • H04L65/1069—Session establishment or de-establishment
    • 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
    • H04M3/56—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M7/00—Arrangements for interconnection between switching centres
    • H04M7/0024—Services and arrangements where telephone services are combined with data services
    • H04M7/003—Click to dial services

Definitions

  • the present invention relates to the field of intelligent network communication of an IP multimedia subsystem (IMS, IP Multimedia Subsystem) and a next generation communication network (NGN, Next Generation Network) network, and more particularly to a method and system for implementing three-party calling in a click-to-dial service.
  • IMS IP multimedia subsystem
  • NTN Next Generation Network
  • the user logs in to the CTD WEB interface, enters or selects the logical calling number user ⁇ and the logical called number user B.
  • the CTD application server first calls the logical calling number user A, waiting for the logic. After the calling number user A answers, the CTD application server calls the logical called number user B, and the logical called number user B rings. When the logical calling number user A hears the ring back tone, the logical called number user B picks up the phone.
  • the two-party telephones that the user wants to make a call are bridged by the CTD service, and the calling service of the two-party calling is realized.
  • Three-party calling means that after user A and user B talk, user A keeps a call with user B, user A calls user C, user C picks up the phone, user A and user C talk, and then user A performs some operations, user A User B and User C can hear each other's voices.
  • the user directly dials the destination telephone number through the terminal (fixed telephone, mobile phone, etc.) to implement the call, and in the CTD service, the CTD application server initiates two calls for the telephone number that needs to be called.
  • the traditional CTD service is widely used in the current communication network, such as WebCall and Web800, which belong to the CTD business or its derivative business.
  • the call status of the CTD service can be used to view the current call status.
  • the current call status includes the phone number and name of the two parties, and the call status.
  • the call status includes: the called ring, the called answer, and the called call.
  • the called call remains medium; in order to make the call operation interface more beautiful, the avatar used by both parties can be displayed on the interface.
  • the CTD service can further extend the instant messaging (IM, Instance Message) service of both parties.
  • FIG. 1 and FIG. 2 are respectively a schematic diagram of a system structure and a method flow of a conventional CTD service. As shown in FIG. 1 and FIG.
  • a traditional CTD service can only call a logical calling user first, and then call a logical called user. That is to say, only a single logical user can be called, and a logical caller cannot be called at the same time as multiple logical called parties, that is, a three-party call or a conference call cannot be realized.
  • FIG. 3 is a schematic flowchart of a method for three-party calling of a terminal to mix a voice.
  • the user UE-A dials the number of the user UE-B, and the two parties talk, and the user UE-A maintains a call with the user UE-B;
  • the UE-A dials the number of the user UE-C, and the two parties talk.
  • the user UE-A presses the "meeting" button, and the users UE-A, UE-B, and UE-C enter the three-party conference state, and the UE-A terminal performs the call.
  • Mixing is a schematic flowchart of a method for three-party calling of a terminal to mix a voice.
  • FIG. 4 is a schematic flowchart of a method for three-party communication of network mixing.
  • the user UE-A dials the number of the user UE-B, and the two parties talk, and the user UE-A maintains a call with the user UE-B;
  • UE-A dials the number of the user UE-C, and the two parties talk;
  • the user UE-A performs certain operations, initiates a new call, and the request number is a three-party conference service code;
  • the application server (AS, Application Server) requests the conference after receiving the request.
  • the implementation of the traditional three-party calling method requires the terminal itself to support mixing, the final terminal to achieve mixing, or the terminal to subscribe to the three-party calling service, and the network side to mix, and the network side mixing still needs the terminal to support the REFER message, so as to be in the new In the session, the information of the old session of the CTD application server is notified, so that the performance of the terminal is put forward higher, and the production cost of the terminal is also increased, which has certain limitations. Summary of the invention
  • the main purpose of the present invention is to provide a method and system for implementing a three-party call in a click-to-dial service, which can support a simultaneous call between a logical caller and two logical called parties, and implement a three-party call function.
  • the present invention provides a method for implementing a three-party call in a click-to-dial service, including:
  • the CTD WS initiates an outgoing call request to the CTD AS, and the CTD AS calls the logical caller and the first logical called party. If both the logical calling party and the first logical called party respond to the off-hook, the logical calling party and the first logical called party enter the calling state. ;
  • the CTD WS initiates an outgoing call request to the CTD AS to the second logical called party, and the CTD AS calls the second logical called party. If the second logical called response is off-hook, the logical calling party and the second logical called party enter the call state;
  • the CTD WS initiates a three-party call request to the CTD AS, and the CTD AS applies for the three-party call resource, and mixes the logical caller, the first logical called party, and the second logical called party, and the logical caller, the first logical called party, and the second logical Was entered into a three-party call state.
  • the CTD WS initiates an outgoing call request to the CTD AS as:
  • the CTD WS receives the outgoing call request of the logical caller and the first logical called by the CTD WEB interface, and sends the outgoing call request to the CTD AS.
  • the CTD AS calls the logical calling party and the first logical called party. If both the logical calling party and the first logical called party respond to the off-hook, the logical calling party and the first logical called party enter the calling state as:
  • the request response module of the CTD AS receives the call request sent by the CTD WS, and sends a response to the request to the CTD WS; the message display module of the CTD WS displays the prompt information through the CTD WEB after receiving the response to the request;
  • the basic outgoing module of the CTD AS calls the logical caller if the final response of the logical caller is The basic outgoing call module of the CTD AS calls the first logical called; if the final response of the first logical called is off-hook, the call hold module of the CTD AS bridges the logical caller with the first logical called.
  • the method further includes: the state reporting module of the CTD AS reporting the response of the logical caller and/or the first logical called party to the CTD WS, and the message display module of the CTD WS displays the logical caller and/or the first logic in real time through the CTD WEB Call response
  • the method further includes: if the final response of the logical caller is not off-hook, the message display module of the CTD WS displays a prompt message for calling the logical caller failure through the CTD WEB;
  • the method further includes: if the temporary response of the first logical called is ringing, the playback mixing module of the CTD AS controls the MRS to play a ringback tone to the logical caller, and when the first logical called party's final response is off-hook The playback mix module of the CTD AS controls the MRS to stop playing the ring back tone to the logical caller; the method further includes: if the final response of the first logical call is not off-hook, the CTD WS message display module passes the CTD WEB The prompt message indicating that the first logical call is failed to be called is displayed, and the playback mix module of the CTD AS controls the MRS to play the failure prompt tone to the logical caller.
  • the CTD WS initiates an outgoing call request to the CTD AS for the second logical called:
  • the call request module of the CTD WS receives the outgoing call request to the second logical called by the CTD WEB, and sends the outgoing call request to the CTD AS;
  • the call holding module that triggers the CTD AS disconnects the bridge between the logical caller and the first logical called.
  • the method further includes:
  • the call request module of the CTD WS receives the call hold request of the first logical called party sent by the CTD WEB, and sends the call hold request to the CTD AS; the request response module of the CTD AS sends a response to the request to the CTD WS, CTD WS
  • the message display module displays the prompt information through the CTD WEB; the call hold module of the CTD AS controls the MRS to be called to the first logic. Put the call to keep the tone.
  • the CTD AS calls the second logical called, and if the second logical called response is off-hook, the logical calling party and the second logical called party enter the calling state as:
  • the basic outgoing module of the CTD AS calls the second logical called party. If the final response of the second logical called is off-hook, the call holding module of the CTD AS bridges the logical calling party with the second logical called party.
  • the method further includes: the state reporting module of the CTD AS reporting the response of the second logical call to the CTD WS, and the message display module of the CTD WS displaying the response of the second logical call in real time through the CTD WEB;
  • the method further includes: if the temporary response of the second logical called is ringing, the playback mix module of the CTD AS controls the MRS to play a ringback tone to the logical caller, and when the second logical called party's final response is off-hook The playback mixing module of the CTD AS controls the MRS to stop playing the ringback tone to the logical caller.
  • the method further includes:
  • the status reporting module of the CTD AS reports the response of the second logical called to the CTD WS, and the message display module of the CTD WS displays the failure of the second logical called by the CTD WEB. Prompt information;
  • the call request module of the CTD WS receives the request to continue to call the second logical called by the CTD WEB, the call requesting module sends the request to the CTD AS, and the basic outgoing module of the CTD AS continues to call the second logical called, otherwise, the CTD
  • the call hold module of the AS resumes the bridging of the logical caller and the first logical called party, and the logical caller and the first logical called bridge re-enter the call state.
  • the CTD WS initiates a three-party call request to the CTD AS, and the CTD AS applies for the three-party call resource, and mixes the logical caller, the first logical called party, and the second logical called party as:
  • the call request module of the CTD WS receives the three-party call request for the logical caller initiated by the CTD WEB, and sends the three-party call request to the CTD AS; the request response mode of the CTD AS The block sends a response to the request to the message display module of the CTD WS, and the message display module displays the prompt information through the CTD WEB;
  • the three-party call module of the CTD AS applies for the three-party call resource, and associates the logical caller with the MRS, the MRS mixes the logical caller, and the logical caller joins the conference; the three-party call module of the CTD AS associates the second logical call with the MRS.
  • the MRS is called to the second logical called, and the second logical called is added to the conference; the three-party calling module of the CTD AS associates the first logical called with the MRS, the MRS mixes with the first logical called, and the first logical called is added. meeting.
  • the present invention also provides a system for implementing a three-party call in a click-to-dial service, including: CTD WS and CTD AS;
  • a CTD WS configured to initiate an outgoing call request to the CTD AS, and/or an outgoing call request to the second logical called, and/or a three-way call request;
  • the CTD AS is configured to: after receiving the outgoing call request, call the logical caller and the first logical called party, if the logical calling party and the first logical called party both respond to the off-hook, the logical calling party and the first logical called party enter the calling state.
  • the second logical called when receiving an outgoing call request for the second logical called, the second logical called is called, and if the second logical called response is off-hook, the logical calling party and the second logical called party enter a call state; And/or, when receiving the three-party call request, applying for a three-party call resource, mixing the logical caller, the first logical called party, and the second logical called party, the logical calling party, the first logical called party, and the second logic was entered into the three-party talk state.
  • the CTD WS further includes: a call requesting module, configured to receive an outgoing call request of the logical caller and the first logical called by the CTD WEB interface, and send the outgoing call request to the system,
  • the CTD AS further includes: a request response module, configured to receive a call request sent by the CTD WS, and send a response to the request to the CTD WS; a basic callout module, configured to call the logical caller, and when the logical caller finally responds When picking up the phone, the first logical call is called; the call a holding module, configured to bridge the logical caller and the first logical called when the final response of the first logical called is off-hook;
  • the CTD WS further includes: a message display module, configured to display the prompt information by using the CTD WEB after receiving the response to the request.
  • the CTD AS further includes: a status reporting module, configured to report a response of the logical caller and/or the first logical called party to the CTD WS; and a playback mixing module, configured to: when the temporary response of the first logical called is vibrating When ringing, the MRS is controlled to play a ringback tone to the logical caller, and when the final response of the first logical call is off-hook, the control MRS stops playing the ringback tone to the logical caller; when the first logical call is answered finally When not going off-hook, the control MRS plays a failure prompt tone to the logical caller;
  • the message display module is further configured to display the response of the logical caller and/or the first logical called party in real time through the CTD WEB; when the final response of the logical caller is not off-hook, the call logic caller fails to be displayed by the CTD WEB The prompt information; when the final response of the first logical called is not off-hook, the prompt information of the first logical called failure is displayed by the CTD WEB.
  • the CTD WS further includes: a call requesting module, configured to receive an outgoing call request for the second logical called by the CTD WEB, and send the outgoing call request to the CTD AS;
  • the CTE AS further includes: a request response module, After receiving the outgoing call request for the second logical called, the call holding module of the CTD AS is triggered; and the call holding module is configured to disconnect the bridge between the logical caller and the first logical called.
  • the call requesting module is further configured to receive a first logical called call hold request sent by the CTD WEB, and send the call hold request to the CTD AS;
  • the CTD WS further includes: a message display module, configured to display prompt information by using the CTD WEB;
  • the request response module is further configured to send a response to the request to the CTD WS;
  • the call holding module is further configured to control the MRS to play a call hold tone to the first logical called party.
  • the CTD AS further includes:
  • a basic outgoing call module configured to call a second logical called party
  • the call holding module is configured to bridge the logical caller and the second logical called when the final response of the second logical called is off-hook.
  • the CTD AS further includes: a status reporting module, configured to report a response of the second logical called party to the CTD WS; and a playback mixing module, configured to control the MRS when the temporary response of the second logical called is ringing
  • the logical caller plays the ring back tone, and when the final response of the second logical call is off-hook, the control MRS stops playing the ring back tone to the logical caller;
  • the CTD WS further includes: a message display module, configured to display a response of the second logical called party in real time through the CTD WEB.
  • the status reporting module is further configured to: when the final response of the second logical called is not off-hook, report the response of the second logical called to the CTD WS;
  • the message display module is further configured to display, by using the CTD WEB, prompt information that the second logical called party fails to be defeated;
  • the CTD WS further includes: a call requesting module, configured to receive, by using the CTD WEB, a request to continue to call the second logical called party, and send the request to the CTD AS;
  • the basic outgoing call module is further configured to: after receiving the request to continue to call the second logical called party, continue to call the second logical called party;
  • the call holding module is further configured to resume the bridging of the logical caller and the first logical called when the request for continuing to call the second logical called is not received.
  • the CTD WS further includes: a call requesting module, configured to receive a three-party call request to the logical caller initiated by the CTD WEB, and send the three-party call request to the CTD AS; and the message display module is configured to receive the request for acceptance After the response, the CTD AS is further displayed by the CTD WEB.
  • the request response module is configured to send a response to the request to the CTD WS.
  • the three-party call module is configured to associate the logical caller with the MRS, and the MRS pairs the logical caller.
  • logical caller joins the conference; associates the second logical call with the MRS, the MRS mixes the second logical called, the second logical called joins the conference; associates the first logical called with the MRS, MRS pairs A logical called mix, the first logic is called to join the meeting.
  • the CTD WS initiates an outgoing call request to the CTD AS, and the CTD AS calls the logical calling party and the first logical called party, if both the logical calling party and the first logical called party respond For off-hook, the logical caller and the first logical called party enter a call state;
  • the CTD WS initiates an outgoing call request to the CTD AS for the second logical called, the CTD AS calls the second logical called, if the second logical called response is Off-hook, the logical caller and the second logical caller enter the call state;
  • the CTD WS initiates a three-party call request to the CTD AS, and the CTD AS applies for the three-party call resource, and the logical caller, the first logical called party, and the second logical called party are called.
  • the mixing, the logical calling, the first logical called and the second logic are entered into a three-party calling state, and finally the
  • the call is initiated from the CTD WS, and no specific user terminal is needed, so the logical caller and the logical callee are not restricted by the type of the user terminal, and the existing terminal type can act as a logical caller or
  • the logic is called, and the traditional three-party calling solution can only be limited to broadband terminals, such as terminals under NGN or IMS, or narrowband terminals, such as GSM or CDMA or PSTN, which can be anchored to broadband services;
  • Real-time display of the status of the logical caller and logical called such as ringing, busy, reject, no answer, off-hook, cancel, etc.; 3, can display the call in real time
  • the response corresponding to the request such as the outgoing call processing, the outgoing call success/failure, the call hold processing, the call hold success/failure, the three-party call processing, the three-party call success/failure, etc.; 4.
  • the terminal is not required to support the two-way call, The terminal needs to support the call hold function of the operation such as the hook flash, and does not need the terminal to support the call waiting function, thereby reducing the requirement of the device in the three-party call, thereby saving cost; 5.
  • the traditional three-party call needs to support the terminal itself to support the mixing. Capability, the mixing is implemented by the terminal side, or the terminal subscribes to the three-party calling service to achieve mixing by the network side. This network side mixing mode requires the terminal to support the REFER message, so as to inform the service application server of the old session information in the new session.
  • the present invention does not require the terminal itself to support the mixing capability; 6.
  • the number of the logical calling party and the logical called party is not limited, that is, a single click dialing service card can be shared by multiple users and multiple telephone numbers.
  • FIG. 1 is a schematic diagram of a system structure of a conventional CTD service
  • FIG. 2 is a schematic flowchart of a method for a conventional CTD service
  • 3 is a schematic flow chart of a method for three-party calling of terminal mixing
  • FIG. 4 is a schematic flow chart of a method for three-way communication of network mixing
  • FIG. 5 is a schematic flowchart of a method for implementing a three-party call in a click-to-dial service according to the present invention
  • FIG. 6 is a schematic flowchart of a specific implementation method of step 502 in FIG. 5 of the present invention
  • FIG. 7 is a specific implementation of step 503 in FIG. 5 of the present invention.
  • Figure 8 is a schematic flow chart of a specific implementation method of step 504 in Figure 5 of the present invention
  • Figure 9 is a schematic flow chart of a specific implementation method of step 505 in Figure 5 of the present invention;
  • Figure 10 (a) and Figure 10 ( b) is a schematic flowchart of Embodiment 1 of a method for implementing a three-party call in a click-to-dial service according to the present invention;
  • FIG. 11 is a schematic structural diagram of a system for implementing a three-party call in a click-to-dial service according to the present invention. detailed description
  • the CTD WS initiates an outgoing call request to the CTD AS, and the CTD AS calls the logical caller and the first logical called party. If both the logical calling party and the first logical called party respond to the off-hook, the logical calling party and the first A logical called party enters a call state; the CTD WS initiates an outgoing call request to the CTD AS to the second logical called party, the CTD AS calls the second logical called party, and if the second logical called response is off-hook, the logical calling party and the second The logical called party enters the call state; the CTD WS initiates a three-party call request to the CTD AS, the CTD AS applies for the three-party call resource, and mixes the logical caller, the first logical called party and the second logical called party, the logical calling party, the first The logical called party and the second logic are entered into a three-party calling state.
  • FIG. 5 is a schematic flowchart of a method for implementing a three-party call in a click-to-dial service according to the present invention. As shown in FIG. 5, the method includes the following steps:
  • Step 501 The CTD WS initiates an outgoing call request to the CTD AS.
  • the call request module of the CTD WEB server receives the outgoing call.
  • the request is sent to the CTD Application Server (CTD AS, Click To Dial Application Server).
  • Step 502 The CTD AS calls the logical caller and the first logical called party. If both the logical calling party and the first logical called party respond to the off-hook, the logical calling party and the first logical called party enter the talking state.
  • Step 503 The CTD WS initiates an outgoing call request to the CTD AS for the second logical called.
  • Step 504 The CTD AS calls the second logical called party. If the second logical called response is off-hook, the logical calling party and the second logical called party enter the talking state.
  • Step 505 The CTD WS initiates a three-party call request to the CTD AS, and the CTD AS applies for the three-party call resource, and mixes the logical caller, the first logical called party, and the second logical called party, and the logical master The first logical called party and the second logic are entered into a three-party calling state.
  • FIG. 6 is a schematic flowchart of a specific implementation method of step 502 in FIG. 5 of the present invention. As shown in FIG. 6, the method includes:
  • Step 601 The request response module of the CTD AS receives the call request sent by the CTD WS, and sends a response to the request to the CTD WS. After receiving the response to the request, the CTD WS message display module displays the prompt information through the CTD WEB: the outgoing call processing in.
  • Step 602 The basic outgoing call module of the CTD AS calls the logical caller; here, the status reporting module of the CTD AS can report the response of the logical caller to the CTD WS, and the message display module of the CTD WS displays the response of the logical caller in real time through the CTD WEB. For example, ringing, not online, busy, off-hook, etc.; if the final response of the logical caller is off-hook, step 603 is performed; otherwise, step 604 is performed.
  • Step 603 The basic outgoing call module of the CTD AS calls the first logical called party; the status reporting module of the CTD AS can report the response of the first logical called party to the CTD WS, and the message display module of the CTD WS displays the first logically executed by the CTD WEB in real time.
  • the response is called, such as ringing, not online, busy, off-hook, etc.; if the final response of the first logical called is off-hook, step 605 is performed, otherwise, step 606 is performed;
  • Step 604 the status reporting module of the CTD AS reports the response of the logical caller to the CTD WS, and the message display module of the CTD WS displays the prompt information of the failed call of the logical caller through the CTD WEB: the logical caller is not off-hook, the call fails; .
  • Step 605 The playback mix module of the CTD AS controls the MRS to stop playing the ring back tone to the logical caller, and the call hold module of the CTD AS bridges the logical caller with the first logical called party, and the logical caller and the first logic are Call to enter the call state.
  • Step 606 The state reporting module of the CTD AS reports the first logical called to the CTD WS
  • the message display module of the CTD WS displays the prompt message that the first logical called party fails to be sent through the CTD WEB: the first logical called party is not off-hook, and the call fails;
  • the playback mix module of the CTD AS controls the MRS to play a failure prompt tone to the logical caller, which is used to prompt the first logical callee not to go off-hook, and the call fails; the process ends.
  • FIG. 7 is a schematic flowchart of a specific implementation method of step 503 in FIG. 5 of the present invention. As shown in FIG. 7, the method includes:
  • Step 701 The call request module of the CTD WS receives an outgoing call request sent by the user through the CTD WEB to the second logical called party, and sends the outgoing call request to the CTD AS;
  • the method further includes: the call request module of the CTD WS receives the first logical called call hold request sent by the user through the CTD WEB, and sends the call hold request to step 702, if the request response module of the CTD AS receives To the call hold request, the response to the request is sent to the CTD WS; after receiving the response to the request, the CTD WS message display module displays the prompt information through the CT D WEB: call hold processing; the call hold module of the CTD AS controls the MRS Playing a call hold tone to the first logical called party, such as playing a piece of music in a loop;
  • Step 703 After receiving the outgoing call request to the second logical called party, the request response module of the CTD AS triggers the call holding module of the CTD AS to disconnect the logical caller from the first logical called party.
  • FIG. 8 is a schematic flowchart of a specific implementation method of step 504 in FIG. 5 of the present invention. As shown in FIG. 8, the method includes:
  • Step 801 The basic outgoing module of the CTD AS calls the second logical called; the status reporting module of the CTD AS can report the response of the second logical called to the CTD WS, and the message display module of the CTD WS displays the second logically by the CTD WEB in real time.
  • the response of the call such as ringing, not online, busy, off-hook, etc.; if the final response of the second logical called is off-hook, step 802 is performed, otherwise, step 803 is performed;
  • the playback mix module of the CTD AS controls the MRS to play the ring back tone to the logical caller.
  • Step 802 The playback mix module of the CTD AS controls the MRS to stop playing the ring back tone to the logical caller, and the call hold module of the CTD AS bridges the logical caller and the second logical called party, and the logical caller and the second logic are Call to enter the call state.
  • Step 803 The status reporting module of the CTD AS reports the response of the second logical called party to the CTD WS, and the message display module of the CTD WS displays the prompt information for calling the second logical called party to fail through the CTD WEB: the second logical called is not off-hook , the call failed;
  • step 801 If the call request module of the CTD WS receives the request of the user to continue to call the second logical called by the CTD WEB, the call requesting module sends the request to the CTD AS, and then step 801 is performed. Otherwise, step 804 is performed.
  • Step 804 The call hold module of the CTD AS resumes the bridge between the logical caller and the first logical called party, and the logical caller and the first logical called bridge are re-entered into the call state.
  • FIG. 9 is a schematic flowchart of a specific implementation method of step 505 in FIG. 5 of the present invention. As shown in FIG. 9, the method includes:
  • Step 901 The call request module of the CTD WS receives a three-party call request for the logical caller initiated by the user through the CTD WEB, and sends the three-party call request to the CTD AS.
  • Step 902 After receiving the three-party call request, the CTD AS request response module sends a response request request to the CTD WS message display module, and the message display module displays the prompt information through the CTD WEB: three-party call processing.
  • Step 903 The three-party calling module of the CTD AS applies for the three-party calling resource, and associates the logical calling party with the MRS, the MRS mixes the logical calling party, and the logical calling party joins the meeting, and the user can speak or listen to other meetings through the logical calling party.
  • the voice is called the voice.
  • Step 904 The three-party calling module of the CTD AS associates the second logical called with the MRS, the MRS mixes the second logical called, the second logical called joins the meeting, and the user can be Call to speak or listen to other logical called and logical callers in a meeting.
  • Step 905 The call hold module of the CTD AS controls the MRS to stop playing the call hold tone to the first logical called party.
  • Step 906 The three-party calling module of the CTD AS associates the first logical called party with the MRS, the MRS mixes with the first logical called party, and the first logical called party joins the meeting, and the user can be called to speak in the meeting by the first logic or Listen to the voice of other logical called and logical callers; at this time, the logical caller, the first logical called party and the second logical called party enter the three-party calling state, and can hear each other.
  • FIG. 10( a ) and FIG. 10 ( b ) are schematic flowcharts of Embodiment 1 of a method for implementing a three-party call in a click-to-dial service according to the present invention.
  • a logical calling UE A and a first logical called UE B1 are included.
  • the second logical called UE B2 as shown in FIG. 10( a ) and FIG. 10 ( b ), the method includes:
  • Step 1001 The CTD WS initiates an outgoing call request to the CTD AS, where the call information, such as the number of A and the number of B1, is carried.
  • Step 1002 the CTD AS returns a call response to the CTD WS, indicating that the request is accepted, and the call is being processed.
  • Step 1003 The CTD AS sends an INVITE request to UE A.
  • step 1004 the UE A rings, and the UE A returns a 180 ringing temporary response to the CTD AS. If the 180 ringing temporary response is reliable, the CTD AS also needs to return a PRACK temporary acknowledgement message to the UE A, and the UE A returns a 200 OK to the CTD AS. As a response to the PRACK temporary confirmation message.
  • step 1005 the CTD AS notifies the CTD WS of the status: UE A rings.
  • Step 1006 UE A picks up the phone, and UE A replies with the 200 OK to the CTD AS as a response to the INVITE request, which carries its own media information.
  • step 1007 the CTD AS notifies the CTD WS of the status: UE A goes off-hook.
  • Step 1008 The CTD AS sends an INVITE request to the UE B1.
  • the UE Bl rings, and the UE Bl returns a 180 ringing temporary response to the CTD AS. If the 180 ringing temporary response is reliable, the CTD AS also needs to return a PRACK temporary acknowledgement message to the UE B1, and the UE B1 returns a 200 OK to the CTD AS. As a response to the PRACK temporary confirmation message.
  • Step 1010 The CTD AS passes the CTD WS state: UE B1 rings.
  • Step 1011 The CTD AS controls the MRS to play the ringback tone to the UE A, and the CTD AS sends an ACK acknowledgement message to the UE A, where the media information of the MRS is carried.
  • Step 1012 the CTD AS returns a call response to the CTD WS:
  • the UEA listens to the ring back tone.
  • Step 1013 UE B1 picks up the phone, and UE B1 replies with the 200 OK to the CTD AS as a response to the INVITE request, which carries its own media information.
  • step 1014 the CTD AS notifies the CTD WS of the status: UE B1 goes off-hook.
  • Step 1015 The CTD AS controls the MRS to stop playing the ring back tone to the UE A, the CTD AS prepares to bridge the UE A and the UE B1, and the CTD AS sends a REINVITE request to the UE A, carrying
  • step 1016 UE A replies with the 200 OK to the CTD AS as a response to the REINVITE request, which carries its own media information.
  • Step 1017 The CTD AS sends an ACK acknowledgement message to UE A.
  • Step 1018 The CTD AS sends an ACK acknowledgement message to the UE B1, carrying the media information of the UE A.
  • Step 1019 the CTD AS returns a call response to the CTD WS: UE A talks to UE B1.
  • Step 1021 the CTD AS returns a call response to the CTD WS: accepting the request, the call to UE B1 remains in progress.
  • Step 1022 the CTD AS prepares to play a call hold tone to the UE B1, and the CTD AS UE Bl sends a REINVITE request.
  • step 1023 UE Bl replies with the 200 OK to the CTD AS as a response to the REINVITE request, which carries its own media information.
  • Step 1024 The CTD AS controls the MRS to play a ringback tone to the UE Bl, and the CTD AS sends an ACK acknowledgement message to the UE Bl, where the media information of the MRS is carried.
  • Step 1025 The CTD AS returns a call response to the CTD WS: the call hold processing to the UE B1 is successful.
  • Step 1026 The CTD WS initiates an outgoing call request to the UE B2 to the CTD AS, where the call information, such as the number of the UE B2, is called, and the call request type is outgoing.
  • step 1027 the CTD AS returns a call response to the CTD WS: accepting the request, and the outgoing call to UE B2 is being processed.
  • Step 1028 The CTD AS sends an INVITE request to UE B2.
  • step 1029 the UE B2 rings, and the UE B2 returns a 180 ringing temporary response to the CTD AS. If the 180 ringing temporary response is reliable, the CTD AS also needs to return a PRACK temporary acknowledgement message to the UE B2, and the UE B2 returns a 200 OK to the CTD AS. As a response to the PRACK temporary confirmation message.
  • step 1030 the CTD AS notifies the CTD WS of the status: UE B2 rings.
  • Step 1031 The CTD AS prepares to play back ringing tone to UE A, and the CTD AS sends a REINVITE request to UE A.
  • Step 1032 UE A replies with the 200 OK to the CTD AS as a response to the REINVITE request, which carries its own media information.
  • Step 1033 The CTD AS controls the MRS to play the ringback tone to the UE A, and the CTD AS sends an ACK acknowledgement message to the UE A, where the media information of the MRS is carried.
  • Step 1034 the CTD AS returns a call response to the CTD WS: UE A listens to the ring back tone.
  • Step 1035 UE B2 picks up the phone, and UE B2 replies 200 OK to the CTD AS as an INVITE.
  • the requested response which carries its own media information.
  • step 1036 the CTD AS notifies the CTD WS of the status: UE B2 goes off-hook.
  • Step 1037 The CTD AS stops playing the ring back tone to the UE A, and the CTD AS prepares to bridge the UE A with the UE B2.
  • the CTD AS sends a REINVITE request to the UE A, where the media information of the UE B2 is carried.
  • Step 1038 UE A replies with the 200 OK to the CTD AS as a response to the REINVITE request, which carries its own media information.
  • Step 1039 The CTD AS sends an ACK acknowledgement message to UE A.
  • Step 1040 The CTD AS sends an ACK acknowledgement message to the UE B2, where the media information of the UE A is carried.
  • Step 1041 The CTD AS returns a call response to the CTD WS: UE A talks to UE B2.
  • Step 1042 the CTD WS initiates a three-party call request to the UE A to the CTD AS, where the call information, such as the number of the UE A, is called, and the call request type is a three-party call.
  • Step 1043 the CTD AS returns a call response to the CTD WS: accepting the request, the three-party call to the logical caller A is being processed.
  • Step 1044 The CTD AS applies for a three-party call resource to the MRS, and the CTD AS sends a REINVITE request to the UE A.
  • step 1045 UE A replies to the CTD AS with a 200 OK as a response to the REINVITE request, which carries its own media information.
  • Step 1046 The CTD AS sends an ACK acknowledgement message to the UE A, where the media information of the MRS is carried; and the UE A joins the three-party call.
  • Step 1047 the CTD AS returns a call response to the CTD WS: UE A joins the three-party call.
  • Step 1048 the CTD AS sends a REINVITE request to the UE B2.
  • step 1049 the UE B2 replies with the 200 OK to the CTD AS as a response to the REINVITE request, which carries its own media information.
  • Step 1050 The CTD AS sends an ACK acknowledgement message to the UE B2, where the media carrying the MRS is carried.
  • UE B2 joins the three-party call.
  • Step 1051 the CTD AS returns a call response to the CTD WS: UE B2 joins the three-party call.
  • Step 1053 UE B1 replies with the 200 OK to the CTD AS as a response to the REINVITE request, which carries its own media information.
  • Step 1054 The CTD AS sends an ACK acknowledgement message to the UE B1 and carries the media information of the MRS.
  • the UE B 1 joins the three-party call.
  • Step 1055 The CTD AS returns a call response to the CTD WS: UE B1 joins the three-party call; at this time, the CTD AS joins the UE A, the UE B2, and the UE B1 to the conference to implement the three-party call.
  • step 1056 the CTD AS returns a call response to the CTD WS: The three-party call is successful.
  • FIG. 11 is a schematic structural diagram of a system for implementing a three-party call in a click-to-dial service according to the present invention.
  • the system includes: 010 ⁇ 3 ⁇ 4 1 and (Ding 0 8 8 2; among them,
  • CTD WS 1 initiating an outgoing call request to CTD AS 2, and/or an outgoing call request to the second logical called, and/or a three-way calling request;
  • the CTD AS 2 is configured to: after receiving the outgoing call request, call the logical caller and the first logical called party, if the logical calling party and the first logical called party both respond to the off-hook, the logical calling party and the first logical called party enter the call.
  • the CTD WS further includes: a call request module 11 for passing the CTD WEB boundary
  • the face receives the outgoing call request of the logical caller and the first logical called, and sends the outgoing call request to the CTD AS 2.
  • the CTD AS 2 further includes: a request response module 21, configured to receive a call request sent by the CTD WS1, and send a response to the request to the CTD WS 1; and a basic callout module 22, configured to call the logical caller, And when the final response of the logical caller is off-hook, the first logical call is called; the call hold module 23 is configured to: when the final response of the first logical call is off-hook, the logical caller and the first logic are Called bridge
  • the CTD WS 1 further includes: a message display module 12, configured to display the prompt information by CTD WEB after receiving the response to the request.
  • the CTD AS 2 further includes: a status module 24 for reporting a response of the logical caller and/or the first logical called to the CTD WS 1; and a playback mixing module 25 for when the first logic is
  • the control MRS plays the ring back tone to the logical caller, and when the final response of the first logical call is off-hook, the control MRS stops playing the ring back tone to the logical caller;
  • the message display module 12 is further configured to display the logical caller and/or the first logical called by the CTD WEB in real time.
  • the CTD WS 1 further includes: a call requesting module 11 , configured to receive an outgoing call request for the second logical called by the CTD WEB, and send the outgoing call request to the CTD AS 2;
  • the CTE AS 2 further includes: a request response module 21, configured to: after receiving an outgoing call request for the second logical called, trigger a call hold module 23 of the CTD AS; and a call hold module 23, configured to disconnect the logical caller and Bridging between the first logical called;
  • the call requesting module 11 is further configured to receive the first logical called by the CTD WEB.
  • the call hold request is sent to the CTD AS 2;
  • the CTD WS 1 further includes: a message display module 12, configured to display the prompt information by using the CTD WEB;
  • the request response module 21 is further configured to send a response to the request to the CTD WS 1; the call holding module 23 is further configured to control the MRS to play the call hold tone to the first logical called party.
  • the CTD AS 2 further includes:
  • the basic outgoing call module 22 is configured to call the second logical called party
  • the call holding module 23 is configured to bridge the logical caller and the second logical called when the final response of the second logical called is off-hook.
  • the CTD AS 2 further includes: a status reporting module 24, configured to report a response of the second logical called to the CTD WS 1; and a playback mixing module 25, configured to: when the temporary response of the second logical called is ringing Controlling the MRS to play a ringback tone to the logical caller, and when the final response of the second logical called is off-hook, controlling the MRS to stop playing the ringback tone to the logical caller;
  • the CTD WS 1 further includes: a message display module 12, configured to display a response of the second logical called party in real time through the CTD WEB.
  • the status reporting module 24 is further configured to report a response of the second logical called to the CTD WS when the final response of the second logical called is not off-hook;
  • the message display module 12 is further configured to display, by using the CTD WEB, prompt information for calling the second logical called party to fail;
  • the CTD WS 1 further includes: a call requesting module 11 , configured to receive a request to continue to call the second logical called by the CTD WEB, and send the request to the CTD AS 2;
  • the basic outgoing call module 22 is further configured to: after receiving the request to continue to call the second logical called party, continue to call the second logical called party;
  • the call holding module 23 is further configured to resume the bridging of the logical caller and the first logical called when the request for continuing to call the second logical called is not received.
  • the CTD WS 2 further includes: a call requesting module 11 configured to receive a three-party call request for a logical caller initiated by the CTD WEB, and send the three-party call request to the CTD AS 2; the message display module 12 , after receiving the response to accept the request, displaying the prompt information through the CTD WEB;
  • the CTD AS 2 further includes: a request response module 21, configured to send a response to the request to the CTD WS 1; a three-party call module 26, configured to associate the logical caller with the MRS, and the MRS mixes the logical caller, the logical master Calling to join the conference; associating the second logical called with the MRS, the MRS is called to the second logical called, the second logical called is joining the conference; the first logical called is associated with the MRS, and the MRS is called the first logically mixed The first logic is called to join the conference.

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Description

一种点击拨号业务中实现三方通话的方法及系统 技术领域
本发明涉及 IP多媒体子系统（ IMS , IP Multimedia Subsystem )及下一 代通信网络（ NGN , Next Generation Network ) 网络的智能网通讯领域， 尤 其涉及一种点击拨号业务中实现三方通话的方法及系统。 背景技术
点击拨号 （ CTD, Click To Dial )业务中， 用户登录 CTD WEB界面， 输入或选择逻辑主叫号码用户 Α和逻辑被叫号码用户 B, CTD应用服务器 通过先呼叫逻辑主叫号码用户 A, 待逻辑主叫号码用户 A接听后， CTD应 用服务器再呼叫逻辑被叫号码用户 B, 逻辑被叫号码用户 B振铃， 待逻辑 主叫号码用户 A听到回铃音， 逻辑被叫号码用户 B摘机， 待逻辑主叫号码 用户 A和逻辑被叫号码用户 B通话，即通过 CTD业务将用户希望进行通话 的两方电话进行话路桥接， 而实现两方通话的呼叫类业务。 三方通话是指 用户 A与用户 B通话后， 用户 A保持与用户 B的通话， 同时用户 A呼叫 用户 C, 用户 C摘机， 用户 A和用户 C通话， 然后用户 A进行某些操作， 用户 A、 用户 B和用户 C两两都可以相互听到对方的声音。
传统的呼叫业务中， 用户是通过终端 （固定电话、 手机等）直接拨打 目的电话号码来实现通话的， 而 CTD业务， 则是由 CTD应用服务器分别 发起两路需要进行通话的电话号码的呼叫。
传统的 CTD业务，在现在通讯网络中被广泛使用，如 WebCall、 Web800 等都属于 CTD业务或其衍生业务。 用户可以通过 CTD业务的呼叫操作界 面， 查看当前通话的状态， 当前通话的状态包括通话双方的电话号码及姓 名、 呼叫状态， 其中， 呼叫状态包括： 被叫振铃、 被叫应答、 被叫挂机、 被叫呼叫保持中等； 为了使呼叫操作界面更加美观， 甚至可以在界面上显 示双方使用的头像等。 CTD业务可以进一步扩展实现通话双方的即时消息 ( IM, Instance Message )业务。 图 1和图 2分别是传统的 CTD业务的系统 结构示意图和方法流程示意图， 如图 1和图 2所示， 传统的 CTD业务只能 先呼叫某逻辑主叫用户， 再呼叫某逻辑被叫用户， 也就是说只能实现呼叫 单个逻辑用户， 无法实现逻辑主叫用户的同时与多个逻辑被叫通话， 即无 法实现三方通话或进行电话会议。
传统的三方通话方法主要有两种： 一种是终端混音方式， 另一种是网 络混音方式。 图 3是终端混音的三方通话的方法的流程示意图， 如图 3所 示， 用户 UE-A拨打用户 UE-B的号码， 双方通话， 用户 UE-A保持与用户 UE-B的通话； 用户 UE-A拨打用户 UE-C的号码， 双方通话， 用户 UE-A 按 "会议"键，用户 UE-A、 UE-B和 UE-C进入三方会议状态， 由用户 UE-A 的终端来进行混音。 图 4是网络混音的三方通话的方法的流程示意图， 如 图 4所示， 用户 UE-A拨打用户 UE-B的号码， 双方通话， 用户 UE-A保持 与用户 UE-B的通话； 用户 UE-A拨打用户 UE-C的号码， 双方通话； 用户 UE-A进行某些操作， 发起新呼叫， 请求号码为三方会议业务码； 应用服务 器（ AS, Application Server )收到该请求后申请会议资源， UE-A通过 REFER 消息分别将 UE-B、 UE-C的呼叫信息告知 AS, AS分别将用户 UE-A、 UE-B 和 UE-C加入会议中， 用户 UE-A、 UE-B和 UE-C进入三方会议状态， 由 AS来实现网络混音。 传统的三方通话方法的实现需要终端本身支持混音， 最终终端实现混音， 或需要终端签约三方通话业务， 由网络侧混音， 而网 络侧混音仍然需要终端支持 REFER消息， 以便在新的会话中告知 CTD应 用服务器老会话的信息， 因此对终端的性能提出较高的要求， 也增加了终 端的生产成本， 具有一定的局限性。 发明内容
有鉴于此， 本发明的主要目的在于提供一种点击拨号业务中实现三方 通话的方法及系统， 能够支持逻辑主叫与两个逻辑被叫之间的同时通话， 实现三方通话功能。
为达到上述目的， 本发明的技术方案是这样实现的：
本发明提供一种点击拨号业务中实现三方通话的方法， 包括：
CTD WS向 CTD AS发起呼出请求， CTD AS呼叫逻辑主叫和第一逻辑 被叫， 如果逻辑主叫和第一逻辑被叫都响应为摘机， 逻辑主叫和第一逻辑 被叫进入通话状态；
CTD WS向 CTD AS发起对第二逻辑被叫的呼出请求， CTD AS呼叫第 二逻辑被叫， 如果第二逻辑被叫响应为摘机， 逻辑主叫和第二逻辑被叫进 入通话状态；
CTD WS向 CTD AS发起三方通话请求， CTD AS申请三方通话资源， 将逻辑主叫、 第一逻辑被叫和第二逻辑被叫进行混音， 逻辑主叫、 第一逻 辑被叫和第二逻辑被进入三方通话状态。
上述方法中， 所述 CTD WS向 CTD AS发起呼出请求为：
CTD WS通过 CTD WEB界面接收逻辑主叫和第一逻辑被叫的呼出请 求， 将该呼出请求发送给 CTD AS。
上述方法中， 所述 CTD AS呼叫逻辑主叫和第一逻辑被叫， 如果逻辑 主叫和第一逻辑被叫都响应为摘机， 逻辑主叫和第一逻辑被叫进入通话状 态为：
CTD AS的请求响应模块接收 CTD WS发出的呼叫请求，并向 CTD WS 发送接受请求的响应； CTD WS的消息显示模块收到接受请求的响应后， 通过 CTD WEB显示提示信息；
CTD AS的基本呼出模块呼叫逻辑主叫，如果逻辑主叫的最终响应是摘 机， CTD AS的基本呼出模块呼叫第一逻辑被叫； 如果第一逻辑被叫的最终 响应为摘机， CTD AS的呼叫保持模块将逻辑主叫和第一逻辑被叫桥接。
上述方法中，
该方法还包括： CTD AS的状态上报模块向 CTD WS上报逻辑主叫和 / 或第一逻辑被叫的响应， CTD WS的消息显示模块通过 CTD WEB实时显 示逻辑主叫和 /或第一逻辑被叫的响应；
该方法还包括： 如果逻辑主叫的最终响应不是摘机， CTD WS的消息 显示模块通过 CTD WEB显示呼叫逻辑主叫失败的提示信息；
该方法还包括： 如果第一逻辑被叫的临时响应为振铃， CTD AS的放音 混音模块控制 MRS向逻辑主叫播放回铃音， 并当第一逻辑被叫的最终响应 为摘机时， CTD AS的放音混音模块控制 MRS停止向逻辑主叫播放回铃音； 该方法还包括： 如果第一逻辑被叫的最终响应不为摘机， CTD WS的 消息显示模块通过 CTD WEB显示呼叫第一逻辑被叫失败的提示信息， CTD AS的放音混音模块控制 MRS向逻辑主叫播放失败提示音。
上述方法中， 所述 CTD WS向 CTD AS发起对第二逻辑被叫的呼出请 求为：
CTD WS的呼叫请求模块接收通过 CTD WEB发送的对第二逻辑被叫 的呼出请求， 并将该呼出请求发送给 CTD AS;
CTD AS的请求响应模块收到对第二逻辑被叫的呼出请求后，触发 CTD AS的呼叫保持模块断开逻辑主叫和第一逻辑被叫之间的桥接。
上述方法中， 该方法还包括：
CTD WS的呼叫请求模块接收通过 CTD WEB发送的第一逻辑被叫的 呼叫保持请求， 并将该呼叫保持请求发送给 CTD AS; CTD AS的请求响应 模块向 CTD WS发送接受请求的响应， CTD WS的消息显示模块通过 CTD WEB显示提示信息； CTD AS的呼叫保持模块控制 MRS向第一逻辑被叫播 放呼叫保持提示音。
上述方法中， 所述 CTD AS呼叫第二逻辑被叫， 如果第二逻辑被叫响 应为摘机， 逻辑主叫和第二逻辑被叫进入通话状态为：
CTD AS的基本呼出模块呼叫第二逻辑被叫，如果第二逻辑被叫的最终 响应为摘机， CTD AS的呼叫保持模块将逻辑主叫和第二逻辑被叫桥接。
上述方法中，
该方法还包括： CTD AS的状态上报模块向 CTD WS上报第二逻辑被 叫的响应， CTD WS的消息显示模块通过 CTD WEB实时显示第二逻辑被 叫的响应；
该方法还包括： 如果第二逻辑被叫的临时响应为振铃， CTD AS的放音 混音模块控制 MRS向逻辑主叫播放回铃音， 并当第二逻辑被叫的最终响应 为摘机时， CTD AS的放音混音模块控制 MRS停止向逻辑主叫播放回铃音； 上述方法中， 该方法还包括：
如果第二逻辑被叫的最终响应不为摘机， CTD AS 的状态上报模块向 CTD WS 上报第二逻辑被叫的响应， CTD WS 的消息显示模块通过 CTD WEB显示呼叫第二逻辑被叫失败的提示信息；
如果 CTD WS的呼叫请求模块通过 CTD WEB收到继续呼叫第二逻辑 被叫的请求， 呼叫请求模块将该请发送给 CTD AS, CTD AS的基本呼出模 块继续呼叫第二逻辑被叫，反之， CTD AS的呼叫保持模块恢复逻辑主叫和 第一逻辑被叫的桥接， 逻辑主叫和第一逻辑被叫的桥接重新进入通话状态。
上述方法中， 所述 CTD WS向 CTD AS发起三方通话请求， CTD AS 申请三方通话资源， 将逻辑主叫、 第一逻辑被叫和第二逻辑被叫进行混音 为：
CTD WS的呼叫请求模块接收通过 CTD WEB发起的对逻辑主叫的三 方通话请求， 并将该三方通话请求发送给 CTD AS; CTD AS的请求响应模 块发送接受请求的响应给 CTD WS 的消息显示模块， 消息显示模块通过 CTD WEB显示提示信息；
CTD AS的三方通话模块申请三方通话资源， 并将逻辑主叫与 MRS关 联， MRS对逻辑主叫混音， 逻辑主叫加入会议； CTD AS的三方通话模块 将第二逻辑被叫与 MRS关联， MRS对第二逻辑被叫混音， 第二逻辑被叫 加入会议； CTD AS的三方通话模块将第一逻辑被叫与 MRS关联， MRS对 第一逻辑被叫混音， 第一逻辑被叫加入会议。
本发明还提供一种点击拨号业务中实现三方通话的系统， 包括： CTD WS和 CTD AS; 其中，
CTD WS, 用于向 CTD AS发起呼出请求、 和 /或对第二逻辑被叫的呼 出请求、 和 /或三方通话请求；
CTD AS, 用于收到呼出请求后， 呼叫逻辑主叫和第一逻辑被叫， 如果 逻辑主叫和第一逻辑被叫都响应为摘机， 逻辑主叫和第一逻辑被叫进入通 话状态； 和 /或， 当收到对第二逻辑被叫的呼出请求时， 呼叫第二逻辑被叫， 如果第二逻辑被叫响应为摘机， 逻辑主叫和第二逻辑被叫进入通话状态； 和 /或， 当收到三方通话请求时， 申请三方通话资源， 将逻辑主叫、 第一逻 辑被叫和第二逻辑被叫进行混音， 逻辑主叫、 第一逻辑被叫和第二逻辑被 进入三方通话 态。
上述系统中，所述 CTD WS进一步包括：呼叫请求模块，用于通过 CTD WEB界面接收逻辑主叫和第一逻辑被叫的呼出请求， 将该呼出请求发送给 上述系统中，
所述 CTD AS进一步包括： 请求响应模块， 用于接收 CTD WS发出的 呼叫请求， 并向 CTD WS发送接受请求的响应； 基本呼出模块， 用于呼叫 逻辑主叫， 并当逻辑主叫的最终响应是摘机时， 呼叫第一逻辑被叫； 呼叫 保持模块， 用于当第一逻辑被叫的最终响应为摘机时， 将逻辑主叫和第一 逻辑被叫桥接；
所述 CTD WS进一步包括： 消息显示模块， 用于收到接受请求的响应 后， 通过 CTD WEB显示提示信息。
上述系统中，
所述 CTD AS还包括： 状态上报模块， 用于向 CTD WS上报逻辑主叫 和 /或第一逻辑被叫的响应； 放音混音模块， 用于当第一逻辑被叫的临时响 应为振铃时， 控制 MRS向逻辑主叫播放回铃音， 并当第一逻辑被叫的最终 响应为摘机时， 控制 MRS停止向逻辑主叫播放回铃音； 当第一逻辑被叫的 最终响应不为摘机时， 控制 MRS向逻辑主叫播放失败提示音；
所述消息显示模块还用于， 通过 CTD WEB实时显示逻辑主叫和 /或第 一逻辑被叫的响应； 当逻辑主叫的最终响应不是摘机时， 通过 CTD WEB 显示呼叫逻辑主叫失败的提示信息； 当第一逻辑被叫的最终响应不为摘机 时， 通过 CTD WEB显示呼叫第一逻辑被叫失败的提示信息。
上述系统中，
所述 CTD WS进一步包括： 呼叫请求模块， 用于接收通过 CTD WEB 发送的对第二逻辑被叫的呼出请求， 并将该呼出请求发送给 CTD AS; 所述 CTE AS进一步包括：请求响应模块，用于收到对第二逻辑被叫的 呼出请求后， 触发 CTD AS的呼叫保持模块； 呼叫保持模块， 用于断开逻 辑主叫和第一逻辑被叫之间的桥接。
上述系统中，
所述呼叫请求模块， 还用于接收通过 CTD WEB发送的第一逻辑被叫 的呼叫保持请求， 并将该呼叫保持请求发送给 CTD AS;
所述 CTD WS还包括： 消息显示模块， 用于通过 CTD WEB显示提示 信息； 所述请求响应模块， 还用于向 CTD WS发送接受请求的响应； 所述呼 叫保持模块， 还用于控制 MRS向第一逻辑被叫播放呼叫保持提示音。
上述系统中， 所述 CTD AS进一步包括：
基本呼出模块， 用于呼叫第二逻辑被叫；
呼叫保持模块， 用于当第二逻辑被叫的最终响应为摘机时， 将逻辑主 叫和第二逻辑被叫桥接。
上述系统中，
所述 CTD AS还包括： 状态上报模块， 用于向 CTD WS上报第二逻辑 被叫的响应； 放音混音模块， 用于当第二逻辑被叫的临时响应为振铃时， 控制 MRS向逻辑主叫播放回铃音，并当第二逻辑被叫的最终响应为摘机时， 控制 MRS停止向逻辑主叫播放回铃音；
所述 CTD WS进一步包括： 消息显示模块， 用于通过 CTD WEB实时 显示第二逻辑被叫的响应。
上述系统中，
所述状态上报模块还用于， 当第二逻辑被叫的最终响应不为摘机时， 向 CTD WS上报第二逻辑被叫的响应；
所述消息显示模块还用于， 通过 CTD WEB显示呼叫第二逻辑被叫失 败的提示信息；
所述 CTD WS还包括： 呼叫请求模块， 用于通过 CTD WEB收到继续 呼叫第二逻辑被叫的请求， 并将该请发送给 CTD AS；
所述基本呼出模块还用于， 收到继续呼叫第二逻辑被叫的请求后， 继 续呼叫第二逻辑被叫；
所述呼叫保持模块还用于， 没有收到继续呼叫第二逻辑被叫的请求时， 恢复逻辑主叫和第一逻辑被叫的桥接。
上述系统中， 所述 CTD WS进一步包括： 呼叫请求模块， 用于接收通过 CTD WEB 发起的对逻辑主叫的三方通话请求， 并将该三方通话请求发送给 CTD AS; 消息显示模块， 用于收到接受请求的响应后， 通过 CTD WEB显示提示信 所述 CTD AS进一步包括： 请求响应模块， 用于发送接受请求的响应 给 CTD WS; 三方通话模块， 用于将逻辑主叫与 MRS关联， MRS对逻辑 主叫混音， 逻辑主叫加入会议； 将第二逻辑被叫与 MRS关联， MRS对第 二逻辑被叫混音， 第二逻辑被叫加入会议； 将第一逻辑被叫与 MRS关联， MRS对第一逻辑被叫混音， 第一逻辑被叫加入会议。
本发明提供的点击拨号业务中实现三方通话的方法及系统， CTD WS 向 CTD AS发起呼出请求， CTD AS呼叫逻辑主叫和第一逻辑被叫， 如果逻 辑主叫和第一逻辑被叫都响应为摘机， 逻辑主叫和第一逻辑被叫进入通话 状态； CTD WS向 CTD AS发起对第二逻辑被叫的呼出请求， CTD AS呼叫 第二逻辑被叫， 如果第二逻辑被叫响应为摘机， 逻辑主叫和第二逻辑被叫 进入通话状态； CTD WS向 CTD AS发起三方通话请求， CTD AS申请三方 通话资源， 将逻辑主叫、 第一逻辑被叫和第二逻辑被叫进行混音， 逻辑主 叫、 第一逻辑被叫和第二逻辑被进入三方通话状态， 最终逻辑主叫与两个 逻辑被叫之间能够同时通话， 实现三方通话功能。
此外， 本发明的技术方案还具有存在以下有益效果：
1、 由 CTD AS进行控制， 呼叫从 CTD WS上发起， 不需要特定的用户 终端， 因此逻辑主叫与逻辑被叫不受用户终端类型的限制， 现有的终端类 型都可以充当逻辑主叫或逻辑被叫， 而传统的三方通话方案只能局限于宽 带终端 ,如 NGN或 IMS下的终端 ,或窄带终端 ,如 GSM或 CDMA或 PSTN 下的终端锚定到宽带业务才可实现； 2、 能够实时显示逻辑主叫和逻辑被叫 的状态， 如振铃、 忙、 拒接、 无应答、 摘机、 取消等； 3、 能够实时显示呼 叫请求对应的响应， 如呼出处理中、 呼出成功 /失败、 呼叫保持处理中、 呼 叫保持成功 /失败、 三方通话处理中、 三方通话成功 /失败等； 4、 不需要终 端支持两路呼叫， 不需要终端支持拍叉簧等操作的呼叫保持功能， 不需要 终端支持呼叫等待功能， 因而降低了三方通话中对设备的要求， 从而节省 成本； 5、 传统的三方通话要实现需要终端本身支持混音能力， 由终端侧实 现混音， 或终端签约了三方通话业务由网络侧实现混音， 这种网络侧混音 的方式需要终端支持 REFER消息， 以便在新会话中告知业务应用服务器老 会话的信息， 而本发明则不需要终端本身支持混音能力； 6、 逻辑主叫、 逻 辑被叫的号码没有限制， 即可以多个用户、 多个电话号码共用一个点击拨 号业务卡。 附图说明
图 1是传统的 CTD业务的系统结构示意图；
图 2是传统的 CTD业务的方法流程示意图；
图 3是终端混音的三方通话的方法的流程示意图；
图 4是网络混音的三方通话的方法的流程示意图；
图 5是本发明实现点击拨号业务中实现三方通话的方法的流程示意图； 图 6是本发明图 5中步驟 502的具体实现方法的流程示意图； 图 7是本发明图 5中步驟 503的具体实现方法的流程示意图； 图 8是本发明图 5中步驟 504的具体实现方法的流程示意图； 图 9是本发明图 5中步驟 505的具体实现方法的流程示意图； 图 10 ( a )和图 10 ( b )是本发明实现点击拨号业务中实现三方通话的 方法的实施例一的流程示意图；
图 11 是本发明实现点击拨号业务中实现三方通话的系统的结构示意 图。 具体实施方式
本发明的基本思想是： CTD WS向 CTD AS发起呼出请求， CTD AS呼 叫逻辑主叫和第一逻辑被叫， 如果逻辑主叫和第一逻辑被叫都响应为摘机， 逻辑主叫和第一逻辑被叫进入通话状态； CTD WS向 CTD AS发起对第二 逻辑被叫的呼出请求， CTD AS呼叫第二逻辑被叫， 如果第二逻辑被叫响应 为摘机， 逻辑主叫和第二逻辑被叫进入通话状态； CTD WS向 CTD AS发 起三方通话请求， CTD AS申请三方通话资源， 将逻辑主叫、 第一逻辑被叫 和第二逻辑被叫进行混音， 逻辑主叫、 第一逻辑被叫和第二逻辑被进入三 方通话状态。
下面通过附图及具体实施例对本发明再做进一步的详细说明。
本发明提供一种点击拨号业务中实现三方通话的方法， 图 5是本发明 实现点击拨号业务中实现三方通话的方法的流程示意图， 如图 5 所示， 该 方法包括以下步驟：
步驟 501 , CTD WS向 CTD AS发起呼出请求；
具体的， 用户登录 CTD WEB界面， 输入逻辑主叫的号码和第一逻辑 被叫的号码后， 点击呼出按钮， CTD WEB服务器（ CTD WS , Click To Dial Web Server ) 的呼叫请求模块收到该呼出请求， 将该呼出请求发送给 CTD 应用服务器（ CTD AS , Click To Dial Application Server )。
步驟 502, CTD AS呼叫逻辑主叫和第一逻辑被叫， 如果逻辑主叫和第 一逻辑被叫都响应为摘机， 逻辑主叫和第一逻辑被叫进入通话状态。
步驟 503 , CTD WS向 CTD AS发起对第二逻辑被叫的呼出请求。
步驟 504, CTD AS呼叫第二逻辑被叫，如果第二逻辑被叫响应为摘机， 逻辑主叫和第二逻辑被叫进入通话状态。
步驟 505 , CTD WS向 CTD AS发起三方通话请求， CTD AS申请三方 通话资源， 将逻辑主叫、 第一逻辑被叫和第二逻辑被叫进行混音， 逻辑主 叫、 第一逻辑被叫和第二逻辑被进入三方通话状态。
图 6是本发明图 5中步驟 502的具体实现方法的流程示意图， 如图 6 所示， 该方法包括：
步驟 601 , CTD AS的请求响应模块接收 CTD WS发出的呼叫请求， 并 向 CTD WS发送接受请求的响应； CTD WS的消息显示模块收到接受请求 的响应后， 通过 CTD WEB显示提示信息： 呼出处理中。
步驟 602, CTD AS的基本呼出模块呼叫逻辑主叫； 这里， CTD AS的 状态上报模块可以向 CTD WS上报逻辑主叫的响应， CTD WS的消息显示 模块通过 CTD WEB实时显示逻辑主叫的响应， 如振铃、 不在线、 忙、 摘 机等； 如果逻辑主叫的最终响应是摘机， 执行步驟 603 , 反之， 执行步驟 604。
步驟 603 , CTD AS的基本呼出模块呼叫第一逻辑被叫； CTD AS的状 态上报模块可以向 CTD WS上报第一逻辑被叫的响应， CTD WS的消息显 示模块通过 CTD WEB实时显示第一逻辑被叫的响应， 如振铃、 不在线、 忙、 摘机等； 如果第一逻辑被叫的最终响应为摘机， 执行步驟 605 , 反之， 执行步驟 606;
这里， 在第一逻辑被叫做出最终响应之前， 如果第一逻辑被叫的临时 响应为振铃， CTD AS的放音混音模块控制 MRS向逻辑主叫播放回铃音。
步驟 604, CTD AS的状态上报模块向 CTD WS上报逻辑主叫的响应， CTD WS的消息显示模块通过 CTD WEB显示呼叫逻辑主叫失败的提示信 息： 逻辑主叫未摘机， 呼叫失败； 流程结束。
步驟 605 , CTD AS的放音混音模块控制 MRS停止向逻辑主叫播放回 铃音， 同时 CTD AS的呼叫保持模块将逻辑主叫和第一逻辑被叫桥接， 逻 辑主叫和第一逻辑被叫进入通话状态。
步驟 606, CTD AS的状态上报模块向 CTD WS上报第一逻辑被叫的响 应， CTD WS的消息显示模块通过 CTD WEB显示呼叫第一逻辑被叫失败 的提示信息： 第一逻辑被叫未摘机， 呼叫失败；
CTD AS的放音混音模块控制 MRS向逻辑主叫播放失败提示音， 用于 提示第一逻辑被叫未摘机， 呼叫失败； 流程结束。
图 7是本发明图 5中步驟 503的具体实现方法的流程示意图， 如图 7 所示， 该方法包括：
步驟 701 , CTD WS的呼叫请求模块接收用户通过 CTD WEB发送的对 第二逻辑被叫的呼出请求， 并将该呼出请求发送给 CTD AS；
可选的， 还可以包括： CTD WS 的呼叫请求模块接收用户通过 CTD WEB 发送的第一逻辑被叫的呼叫保持请求， 并将该呼叫保持请求发送给 步驟 702,如果 CTD AS的请求响应模块收到呼叫保持请求，则向 CTD WS发送接受请求的响应； CTD WS 的消息显示模块收到接受请求的响应 后， 通过 CT D WEB显示提示信息： 呼叫保持处理中； CTD AS的呼叫保 持模块控制 MRS向第一逻辑被叫播放呼叫保持提示音，如循环地播放一段 音乐；
步驟 703， CTD AS的请求响应模块收到对第二逻辑被叫的呼出请求后， 触发 CTD AS的呼叫保持模块断开逻辑主叫和第一逻辑被叫之间的桥接。
图 8是本发明图 5中步驟 504的具体实现方法的流程示意图， 如图 8 所示， 该方法包括：
步驟 801 , CTD AS的基本呼出模块呼叫第二逻辑被叫； CTD AS的状 态上报模块可以向 CTD WS上报第二逻辑被叫的响应， CTD WS的消息显 示模块通过 CTD WEB实时显示第二逻辑被叫的响应， 如振铃、 不在线、 忙、 摘机等； 如果第二逻辑被叫的最终响应为摘机， 执行步驟 802, 反之， 执行步驟 803; 这里， 在第二逻辑被叫做出最终响应之前， 如果第二逻辑被叫的临时 响应为振铃，则 CTD AS的放音混音模块控制 MRS向逻辑主叫播放回铃音。
步驟 802, CTD AS的放音混音模块控制 MRS停止向逻辑主叫播放回 铃音， 同时 CTD AS的呼叫保持模块将逻辑主叫和第二逻辑被叫桥接， 逻 辑主叫和第二逻辑被叫进入通话状态。
步驟 803 , CTD AS的状态上报模块向 CTD WS上报第二逻辑被叫的响 应， CTD WS的消息显示模块通过 CTD WEB显示呼叫第二逻辑被叫失败 的提示信息： 第二逻辑被叫未摘机， 呼叫失败；
如果 CTD WS的呼叫请求模块通过 CTD WEB收到用户的继续呼叫第 二逻辑被叫的请求， 则呼叫请求模块将该请发送给 CTD AS, 则执行步驟 801 , 反之， 执行步驟 804。
步驟 804, CTD AS的呼叫保持模块恢复逻辑主叫和第一逻辑被叫的桥 接， 逻辑主叫和第一逻辑被叫的桥接重新进入通话状态。
图 9是本发明图 5中步驟 505的具体实现方法的流程示意图， 如图 9 所示， 该方法包括：
步驟 901 , CTD WS的呼叫请求模块接收用户通过 CTD WEB发起的对 逻辑主叫的三方通话请求， 并将该三方通话请求发送给 CTD AS。
步驟 902, CTD AS的请求响应模块收到三方通话请求后， 发送接受请 求的响应给 CTD WS的消息显示模块， 消息显示模块通过 CTD WEB显示 提示信息： 三方通话处理中。
步驟 903 , CTD AS的三方通话模块申请三方通话资源， 并将逻辑主叫 与 MRS关联， MRS对逻辑主叫混音， 逻辑主叫加入会议， 用户可以通过 逻辑主叫在会议中说话或收听其他逻辑被叫的声音。
步驟 904, CTD AS的三方通话模块将第二逻辑被叫与 MRS关联， MRS 对第二逻辑被叫混音， 第二逻辑被叫加入会议， 用户可以通过第二逻辑被 叫在会议中说话或收听其他逻辑被叫和逻辑主叫的声音。
步驟 905 , CTD AS的呼叫保持模块控制 MRS停止向第一逻辑被叫播 放呼叫保持提示音。
步驟 906, CTD AS的三方通话模块将第一逻辑被叫与 MRS关联， MRS 对第一逻辑被叫混音， 第一逻辑被叫加入会议， 用户可以通过第一逻辑被 叫在会议中说话或收听其他逻辑被叫和逻辑主叫的声音； 此时， 逻辑主叫、 第一逻辑被叫和第二逻辑被叫进入三方通话状态， 可以互相听说。
实施例一
图 10 ( a )和图 10 ( b )是本发明实现点击拨号业务中实现三方通话的 方法的实施例一的流程示意图， 本实施例中包括逻辑主叫 UE A, 第一逻辑 被叫 UE B1和第二逻辑被叫 UE B2, 如图 10 ( a )和图 10 ( b )所示， 该方 法包括：
步驟 1001 , CTD WS发起呼出请求到 CTD AS, 其中携带呼叫信息， 如 A的号码、 B1的号码。
步驟 1002, CTD AS向 CTD WS返回呼叫响应， 表示接受请求， 呼叫 正在处理中。
步驟 1003 , CTD AS向 UE A发送 INVITE请求。
步驟 1004, UE A振铃， UE A向 CTD AS返回 180振铃临时响应， 若 该 180振铃临时响应可靠， CTD AS还需要向 UE A返回 PRACK临时确认 消息， UE A向 CTD AS回复 200 OK作为 PRACK临时确认消息的响应。
步驟 1005 , CTD AS向 CTD WS通报状态： UE A振铃。
步驟 1006, UE A摘机， UE A向 CTD AS回复 200 OK作为 INVITE请 求的响应， 其中携带自身的媒体信息。
步驟 1007 , CTD AS向 CTD WS通报状态： UE A摘机。
步驟 1008 , CTD AS向 UE B 1发送 INVITE请求。 步驟 1009, UE Bl振铃， UE Bl向 CTD AS返回 180振铃临时响应， 若该 180振铃临时响应可靠， CTD AS还需要向 UE B1返回 PRACK临时 确认消息， UE B1向 CTD AS回复 200 OK作为 PRACK临时确认消息的响 应。
步驟 1010, CTD AS向 CTD WS通 4艮状态： UE B1振铃。
步驟 1011 , CTD AS控制 MRS向 UE A播放回铃音， CTD AS向 UE A 发送 ACK确认消息， 其中携带 MRS的媒体信息。
步驟 1012, CTD AS向 CTD WS返回呼叫响应： UEA收听回铃音。 步驟 1013 , UE B1摘机， UE B1向 CTD AS回复 200 OK作为 INVITE 请求的响应， 其中携带自身的媒体信息。
步驟 1014, CTD AS向 CTD WS通报状态： UE B1摘机。
步驟 1015 , CTD AS控制 MRS停止向 UE A播放回铃音， CTD AS准 备将 UE A与 UE B1桥接， CTD AS向 UE A发送 REINVITE请求， 携带
UE B1的媒体信息。
步驟 1016, UE A向 CTD AS回复 200 OK作为 REINVITE请求的响应， 其中携带自身的媒体信息。
步驟 1017 , CTD AS向 UE A发送 ACK确认消息。
步驟 1018, CTD AS向 UE B1发送 ACK确认消息， 携带 UE A的媒体 信息。
步驟 1019, CTD AS向 CTD WS返回呼叫响应： UE A与 UE B1通话。 步驟 1020, CTD WS发起对 UE B1的呼叫保持请求到 CTD AS, 其中 携带呼叫信息， 如 UE B1的号码， 呼叫请求类型为呼叫保持。
步驟 1021 , CTD AS向 CTD WS返回呼叫响应： 接受请求， 对 UE B1 的呼叫保持正在处理中。
步驟 1022, CTD AS准备对 UE B1播放呼叫保持提示音， CTD AS向 UE Bl发送 REINVITE请求。
步驟 1023, UE Bl向 CTD AS回复 200 OK作为 REINVITE请求的响 应， 其中携带自身的媒体信息。
步驟 1024, CTD AS控制 MRS向 UE Bl播放回铃音， CTD AS向 UE Bl 发送 ACK确认消息， 其中携带 MRS的媒体信息。
步驟 1025 , CTD AS向 CTD WS返回呼叫响应： 对 UE B1的呼叫保持 处理成功。
步驟 1026, CTD WS发起对 UE B2的呼出请求到 CTD AS, 其中携带 呼叫信息， 如 UE B2的号码， 呼叫请求类型为呼出。
步驟 1027, CTD AS向 CTD WS返回呼叫响应： 接受请求， 对 UE B2 的呼出正在处理中。
步驟 1028 , CTD AS向 UE B2发送 INVITE请求。
步驟 1029, UE B2振铃， UE B2向 CTD AS返回 180振铃临时响应， 若该 180振铃临时响应可靠， CTD AS还需要向 UE B2返回 PRACK临时 确认消息， UE B2向 CTD AS回复 200 OK作为 PRACK临时确认消息的响 应。
步驟 1030, CTD AS向 CTD WS通报状态： UE B2振铃。
步驟 1031 , CTD AS准备向 UE A播放回铃音， CTD AS向 UE A发送 REINVITE请求。
步驟 1032, UE A向 CTD AS回复 200 OK作为 REINVITE请求的响应， 其中携带自身的媒体信息。
步驟 1033, CTD AS控制 MRS向 UE A播放回铃音， CTD AS向 UE A 发送 ACK确认消息， 其中携带 MRS的媒体信息。
步驟 1034, CTD AS向 CTD WS返回呼叫响应： UE A听回铃音。
步驟 1035, UE B2摘机， UE B2向 CTD AS回复 200 OK作为 INVITE 请求的响应， 其中携带自身的媒体信息。
步驟 1036, CTD AS向 CTD WS通报状态： UE B2摘机。
步驟 1037, CTD AS停止向 UE A播放回铃音， CTD AS准备将 UE A 与 UE B2桥接 , CTD AS向 UE A发送 REINVITE请求 , 其中携带 UE B2 的媒体信息。
步驟 1038, UE A向 CTD AS回复 200 OK作为 REINVITE请求的响应， 其中携带自身的媒体信息。
步驟 1039, CTD AS向 UE A发送 ACK确认消息。
步驟 1040, CTD AS向 UE B2发送 ACK确认消息， 其中携带 UE A的 媒体信息。
步驟 1041 , CTD AS向 CTD WS返回呼叫响应： UE A与 UE B2通话。 步驟 1042, CTD WS发起对 UE A的三方通话请求到 CTD AS, 其中携 带呼叫信息， 如 UE A的号码， 呼叫请求类型为三方通话。
步驟 1043 , CTD AS向 CTD WS返回呼叫响应： 接受请求， 对逻辑主 叫 A的三方通话正在处理中。
步驟 1044, CTD AS向 MRS申请三方通话资源， CTD AS向 UE A发 送 REINVITE请求。
步驟 1045 , UE A向 CTD AS回复 200 OK作为 REINVITE请求的响应， 其中携带自身的媒体信息。
步驟 1046, CTD AS向 UE A发送 ACK确认消息， 其中携带 MRS的 媒体信息； UE A加入三方通话中。
步驟 1047, CTD AS向 CTD WS返回呼叫响应： UE A加入三方通话。 步驟 1048, CTD AS向 UE B2发送 REINVITE请求。
步驟 1049, UE B2向 CTD AS回复 200 OK作为 REINVITE请求的响 应， 其中携带自身的媒体信息。 步驟 1050, CTD AS向 UE B2发送 ACK确认消息， 其中携带 MRS的 媒体。 UE B2加入三方通话中。
步驟 1051 , CTD AS向 CTD WS返回呼叫响应： UE B2加入三方通话。 步驟 1052, CTD AS停止对逻辑被叫 B1播放呼叫保持提示音， CTD AS 向 UE B1发送 REINVITE请求。
步驟 1053 , UE B1向 CTD AS回复 200 OK作为 REINVITE请求的响 应， 其中携带自身的媒体信息。
步驟 1054, CTD AS向 UE B1发送 ACK确认消息， 并携带 MRS的媒 体信息； UE B 1加入三方通话中。
步驟 1055 , CTD AS向 CTD WS返回呼叫响应： UE B1加入三方通话； 此时 CTD AS分别将 UE A、 UE B2、 UE B1加入会议中 , 实现三方通话。
步驟 1056, CTD AS向 CTD WS返回呼叫响应： 三方通话成功。
为实现上述方法， 本发明还提供一种点击拨号业务中实现三方通话的 系统， 图 11是本发明实现点击拨号业务中实现三方通话的系统的结构示意 图， 如图 11所示， 该系统包括： 010 \\¾ 1和（丁0八8 2； 其中，
CTD WS 1 , 于向 CTD AS 2发起呼出请求、 和 /或对第二逻辑被叫的呼 出请求、 和 /或三方通话请求；
CTD AS 2, 用于收到呼出请求后， 呼叫逻辑主叫和第一逻辑被叫， 如 果逻辑主叫和第一逻辑被叫都响应为摘机， 逻辑主叫和第一逻辑被叫进入 通话状态； 和 /或， 当收到对第二逻辑被叫的呼出请求时， 呼叫第二逻辑被 叫， 如果第二逻辑被叫响应为摘机， 逻辑主叫和第二逻辑被叫进入通话状 态； 和 /或， 当收到三方通话请求时， 申请三方通话资源， 将逻辑主叫、 第 一逻辑被叫和第二逻辑被叫进行混音， 逻辑主叫、 第一逻辑被叫和第二逻 辑被进入三方通话状。
所述 CTD WS进一步包括： 呼叫请求模块 11 , 用于通过 CTD WEB界 面接收逻辑主叫和第一逻辑被叫的呼出请求，将该呼出请求发送给 CTD AS 2。
和 /或， 所述 CTD AS 2进一步包括： 请求响应模块 21 , 用于接收 CTD WS1发出的呼叫请求， 并向 CTD WS 1发送接受请求的响应； 基本呼出模 块 22, 用于呼叫逻辑主叫， 并当逻辑主叫的最终响应是摘机时， 呼叫第一 逻辑被叫； 呼叫保持模块 23, 用于当第一逻辑被叫的最终响应为摘机时， 将逻辑主叫和第一逻辑被叫桥接；
所述 CTD WS 1进一步包括： 消息显示模块 12, 用于收到接受请求的 响应后， 通过 CTD WEB显示提示信息。
所述 CTD AS 2还包括： 状态上 ^艮模块 24, 用于向 CTD WS 1上报逻 辑主叫和 /或第一逻辑被叫的响应； 放音混音模块 25, 用于当第一逻辑被叫 的临时响应为振铃时， 控制 MRS向逻辑主叫播放回铃音， 并当第一逻辑被 叫的最终响应为摘机时， 控制 MRS停止向逻辑主叫播放回铃音； 当第一逻 辑被叫的最终响应不为摘机时， 控制 MRS向逻辑主叫播放失败提示音； 所述消息显示模块 12还用于， 通过 CTD WEB实时显示逻辑主叫和 / 或第一逻辑被叫的响应； 当逻辑主叫的最终响应不是摘机时， 通过 CTD WEB显示呼叫逻辑主叫失败的提示信息； 当第一逻辑被叫的最终响应不为 摘机时， 通过 CTD WEB显示呼叫第一逻辑被叫失败的提示信息。
和 /或， 所述 CTD WS 1进一步包括： 呼叫请求模块 11 , 用于接收通过 CTD WEB发送的对第二逻辑被叫的呼出请求，并将该呼出请求发送给 CTD AS 2;
所述 CTE AS 2进一步包括：请求响应模块 21 ,用于收到对第二逻辑被 叫的呼出请求后， 触发 CTD AS的呼叫保持模块 23; 呼叫保持模块 23, 用 于断开逻辑主叫和第一逻辑被叫之间的桥接；
呼叫请求模块 11 , 还用于接收通过 CTD WEB发送的第一逻辑被叫的 呼叫保持请求， 并将该呼叫保持请求发送给 CTD AS 2; 所述 CTD WS 1还 包括： 消息显示模块 12, 用于通过 CTD WEB显示提示信息；
所述请求响应模块 21 , 还用于向 CTD WS 1发送接受请求的响应； 所 述呼叫保持模块 23, 还用于控制 MRS 向第一逻辑被叫播放呼叫保持提示 音。
和 /或， 所述 CTD AS 2进一步包括：
基本呼出模块 22, 用于呼叫第二逻辑被叫；
呼叫保持模块 23, 用于当第二逻辑被叫的最终响应为摘机时， 将逻辑 主叫和第二逻辑被叫桥接。
所述 CTD AS 2还包括： 状态上报模块 24, 用于向 CTD WS 1上报第 二逻辑被叫的响应； 放音混音模块 25, 用于当第二逻辑被叫的临时响应为 振铃时， 控制 MRS向逻辑主叫播放回铃音， 并当第二逻辑被叫的最终响应 为摘机时， 控制 MRS停止向逻辑主叫播放回铃音；
所述 CTD WS 1进一步包括： 消息显示模块 12, 用于通过 CTD WEB 实时显示第二逻辑被叫的响应。
所述状态上报模块 24还用于，当第二逻辑被叫的最终响应不为摘机时， 向 CTD WS上报第二逻辑被叫的响应；
所述消息显示模块 12还用于， 通过 CTD WEB显示呼叫第二逻辑被叫 失败的提示信息；
所述 CTD WS 1还包括： 呼叫请求模块 11 , 用于通过 CTD WEB收到 继续呼叫第二逻辑被叫的请求， 并将该请发送给 CTD AS 2;
所述基本呼出模块 22还用于， 收到继续呼叫第二逻辑被叫的请求后， 继续呼叫第二逻辑被叫；
所述呼叫保持模块 23还用于， 没有收到继续呼叫第二逻辑被叫的请求 时， 恢复逻辑主叫和第一逻辑被叫的桥接。 和 /或， 所述 CTD WS 2进一步包括： 呼叫请求模块 11 , 用于接收通过 CTD WEB发起的对逻辑主叫的三方通话请求，并将该三方通话请求发送给 CTD AS 2; 消息显示模块 12,用于收到接受请求的响应后，通过 CTD WEB 显示提示信息；
所述 CTD AS 2进一步包括： 请求响应模块 21 , 用于发送接受请求的 响应给 CTD WS 1 ; 三方通话模块 26, 用于将逻辑主叫与 MRS关联， MRS 对逻辑主叫混音， 逻辑主叫加入会议； 将第二逻辑被叫与 MRS关联， MRS 对第二逻辑被叫混音， 第二逻辑被叫加入会议； 将第一逻辑被叫与 MRS关 联， MRS对第一逻辑被叫混音， 第一逻辑被叫加入会议。
以上所述， 仅为本发明的较佳实施例而已， 并非用于限定本发明的保 护范围， 凡在本发明的精神和原则之内所作的任何修改、 等同替换和改进 等， 均应包含在本发明的保护范围之内。

Claims

权利要求书
1、 一种点击拨号业务中实现三方通话的方法， 其特征在于， 该方法包 括：
CTD WS向 CTD AS发起呼出请求， CTD AS呼叫逻辑主叫和第一逻辑 被叫， 如果逻辑主叫和第一逻辑被叫都响应为摘机， 逻辑主叫和第一逻辑 被叫进入通话状态；
CTD WS向 CTD AS发起对第二逻辑被叫的呼出请求， CTD AS呼叫第 二逻辑被叫， 如果第二逻辑被叫响应为摘机， 逻辑主叫和第二逻辑被叫进 入通话状态；
CTD WS向 CTD AS发起三方通话请求， CTD AS申请三方通话资源， 将逻辑主叫、 第一逻辑被叫和第二逻辑被叫进行混音， 逻辑主叫、 第一逻 辑被叫和第二逻辑被进入三方通话状态。
2、根据权利要求 1所述的方法，其特征在于，所述 CTD WS向 CTD AS 发起呼出请求为：
CTD WS通过 CTD WEB界面接收逻辑主叫和第一逻辑被叫的呼出请 求， 将该呼出请求发送给 CTD AS。
3、 根据权利要求 1所述的方法， 其特征在于， 所述 CTD AS呼叫逻辑 主叫和第一逻辑被叫， 如果逻辑主叫和第一逻辑被叫都响应为摘机， 逻辑 主叫和第一逻辑被叫进入通话状态为：
CTD AS的请求响应模块接收 CTD WS发出的呼叫请求，并向 CTD WS 发送接受请求的响应； CTD WS的消息显示模块收到接受请求的响应后， 通过 CTD WEB显示提示信息；
CTD AS的基本呼出模块呼叫逻辑主叫，如果逻辑主叫的最终响应是摘 机， CTD AS的基本呼出模块呼叫第一逻辑被叫； 如果第一逻辑被叫的最终 响应为摘机， CTD AS的呼叫保持模块将逻辑主叫和第一逻辑被叫桥接。
4、 根据权利要求 3所述的方法， 其特征在于，
该方法还包括： CTD AS的状态上报模块向 CTD WS上报逻辑主叫和 / 或第一逻辑被叫的响应， CTD WS的消息显示模块通过 CTD WEB实时显 示逻辑主叫和 /或第一逻辑被叫的响应；
该方法还包括： 如果逻辑主叫的最终响应不是摘机， CTD WS的消息 显示模块通过 CTD WEB显示呼叫逻辑主叫失败的提示信息；
该方法还包括： 如果第一逻辑被叫的临时响应为振铃， CTD AS的放音 混音模块控制 MRS向逻辑主叫播放回铃音， 并当第一逻辑被叫的最终响应 为摘机时， CTD AS的放音混音模块控制 MRS停止向逻辑主叫播放回铃音； 该方法还包括： 如果第一逻辑被叫的最终响应不为摘机， CTD WS的 消息显示模块通过 CTD WEB显示呼叫第一逻辑被叫失败的提示信息， CTD AS的放音混音模块控制 MRS向逻辑主叫播放失败提示音。
5、根据权利要求 1所述的方法，其特征在于，所述 CTD WS向 CTD AS 发起对第二逻辑被叫的呼出请求为：
CTD WS的呼叫请求模块接收通过 CTD WEB发送的对第二逻辑被叫 的呼出请求， 并将该呼出请求发送给 CTD AS;
CTD AS的请求响应模块收到对第二逻辑被叫的呼出请求后，触发 CTD AS的呼叫保持模块断开逻辑主叫和第一逻辑被叫之间的桥接。
6、 根据权利要求 5所述的方法， 其特征在于， 该方法还包括：
CTD WS的呼叫请求模块接收通过 CTD WEB发送的第一逻辑被叫的 呼叫保持请求， 并将该呼叫保持请求发送给 CTD AS; CTD AS的请求响应 模块向 CTD WS发送接受请求的响应， CTD WS的消息显示模块通过 CTD WEB显示提示信息； CTD AS的呼叫保持模块控制 MRS向第一逻辑被叫播 放呼叫保持提示音。
7、 根据权利要求 1所述的方法， 其特征在于， 所述 CTD AS呼叫第二 逻辑被叫， 如果第二逻辑被叫响应为摘机， 逻辑主叫和第二逻辑被叫进入 通话^ 态为：
CTD AS的基本呼出模块呼叫第二逻辑被叫，如果第二逻辑被叫的最终 响应为摘机， CTD AS的呼叫保持模块将逻辑主叫和第二逻辑被叫桥接。
8、 根据权利要求 7所述的方法， 其特征在于，
该方法还包括： CTD AS的状态上报模块向 CTD WS上报第二逻辑被 叫的响应， CTD WS的消息显示模块通过 CTD WEB实时显示第二逻辑被 叫的响应；
该方法还包括： 如果第二逻辑被叫的临时响应为振铃， CTD AS的放音 混音模块控制 MRS向逻辑主叫播放回铃音， 并当第二逻辑被叫的最终响应 为摘机时， CTD AS的放音混音模块控制 MRS停止向逻辑主叫播放回铃音。
9、 根据权利要求 7或 8所述的方法， 其特征在于， 该方法还包括： 如果第二逻辑被叫的最终响应不为摘机， CTD AS 的状态上报模块向
CTD WS 上报第二逻辑被叫的响应， CTD WS 的消息显示模块通过 CTD WEB显示呼叫第二逻辑被叫失败的提示信息；
如果 CTD WS的呼叫请求模块通过 CTD WEB收到继续呼叫第二逻辑 被叫的请求， 呼叫请求模块将该请发送给 CTD AS, CTD AS的基本呼出模 块继续呼叫第二逻辑被叫，反之， CTD AS的呼叫保持模块恢复逻辑主叫和 第一逻辑被叫的桥接， 逻辑主叫和第一逻辑被叫的桥接重新进入通话状态。
10、 根据权利要求 1所述的方法， 其特征在于， 所述 CTD WS向 CTD AS发起三方通话请求， CTD AS申请三方通话资源， 将逻辑主叫、 第一逻 辑被叫和第二逻辑被叫进行混音为：
CTD WS的呼叫请求模块接收通过 CTD WEB发起的对逻辑主叫的三 方通话请求， 并将该三方通话请求发送给 CTD AS; CTD AS的请求响应模 块发送接受请求的响应给 CTD WS 的消息显示模块， 消息显示模块通过 CTD WEB显示提示信息；
CTD AS的三方通话模块申请三方通话资源， 并将逻辑主叫与 MRS关 联， MRS对逻辑主叫混音， 逻辑主叫加入会议； CTD AS的三方通话模块 将第二逻辑被叫与 MRS关联， MRS对第二逻辑被叫混音， 第二逻辑被叫 加入会议； CTD AS的三方通话模块将第一逻辑被叫与 MRS关联， MRS对 第一逻辑被叫混音， 第一逻辑被叫加入会议。
11、 一种点击拨号业务中实现三方通话的系统， 其特征在于， 该系统 包括： CTD WS和 CTD AS; 其中，
CTD WS, 用于向 CTD AS发起呼出请求、 和 /或对第二逻辑被叫的呼 出请求、 和 /或三方通话请求；
CTD AS, 用于收到呼出请求后， 呼叫逻辑主叫和第一逻辑被叫， 如果 逻辑主叫和第一逻辑被叫都响应为摘机， 逻辑主叫和第一逻辑被叫进入通 话状态； 和 /或， 当收到对第二逻辑被叫的呼出请求时， 呼叫第二逻辑被叫， 如果第二逻辑被叫响应为摘机， 逻辑主叫和第二逻辑被叫进入通话状态； 和 /或， 当收到三方通话请求时， 申请三方通话资源， 将逻辑主叫、 第一逻 辑被叫和第二逻辑被叫进行混音， 逻辑主叫、 第一逻辑被叫和第二逻辑被 进入三方通话 态。
12、 根据权利要求 11所述的系统， 其特征在于， 所述 CTD WS进一步 包括： 呼叫请求模块， 用于通过 CTD WEB界面接收逻辑主叫和第一逻辑 被叫的呼出请求， 将该呼出请求发送给 CTD AS。
13、 根据权利要求 11所述的系统， 其特征在于，
所述 CTD AS进一步包括： 请求响应模块， 用于接收 CTD WS发出的 呼叫请求， 并向 CTD WS发送接受请求的响应； 基本呼出模块， 用于呼叫 逻辑主叫， 并当逻辑主叫的最终响应是摘机时， 呼叫第一逻辑被叫； 呼叫 保持模块， 用于当第一逻辑被叫的最终响应为摘机时， 将逻辑主叫和第一 逻辑被叫桥接；
所述 CTD WS进一步包括： 消息显示模块， 用于收到接受请求的响应 后， 通过 CTD WEB显示提示信息。
14、 根据权利要求 13所述的系统， 其特征在于，
所述 CTD AS还包括： 状态上 4艮模块， 用于向 CTD WS上报逻辑主叫 和 /或第一逻辑被叫的响应； 放音混音模块， 用于当第一逻辑被叫的临时响 应为振铃时， 控制 MRS向逻辑主叫播放回铃音， 并当第一逻辑被叫的最终 响应为摘机时， 控制 MRS停止向逻辑主叫播放回铃音； 当第一逻辑被叫的 最终响应不为摘机时， 控制 MRS向逻辑主叫播放失败提示音；
所述消息显示模块还用于， 通过 CTD WEB实时显示逻辑主叫和 /或第 一逻辑被叫的响应； 当逻辑主叫的最终响应不是摘机时， 通过 CTD WEB 显示呼叫逻辑主叫失败的提示信息； 当第一逻辑被叫的最终响应不为摘机 时， 通过 CTD WEB显示呼叫第一逻辑被叫失败的提示信息。
15、 根据权利要求 11所述的系统， 其特征在于，
所述 CTD WS进一步包括： 呼叫请求模块， 用于接收通过 CTD WEB 发送的对第二逻辑被叫的呼出请求， 并将该呼出请求发送给 CTD AS; 所述 CTE AS进一步包括： 请求响应模块， 用于收到对第二逻辑被叫 的呼出请求后， 触发 CTD AS的呼叫保持模块； 呼叫保持模块， 用于断开 逻辑主叫和第一逻辑被叫之间的桥接。
16、 根据权利要求 15所述的系统， 其特征在于，
所述呼叫请求模块， 还用于接收通过 CTD WEB发送的第一逻辑被叫 的呼叫保持请求， 并将该呼叫保持请求发送给 CTD AS;
所述 CTD WS还包括： 消息显示模块， 用于通过 CTD WEB显示提示 信息；
所述请求响应模块， 还用于向 CTD WS发送接受请求的响应； 所述呼 叫保持模块， 还用于控制 MRS向第一逻辑被叫播放呼叫保持提示音。
17、 根据权利要求 11所述的系统， 其特征在于， 所述 CTD AS进一步 包括：
基本呼出模块， 用于呼叫第二逻辑被叫；
呼叫保持模块， 用于当第二逻辑被叫的最终响应为摘机时， 将逻辑主 叫和第二逻辑被叫桥接。
18、 根据权利要求 17所述的系统， 其特征在于，
所述 CTD AS还包括： 状态上报模块， 用于向 CTD WS上报第二逻辑 被叫的响应； 放音混音模块， 用于当第二逻辑被叫的临时响应为振铃时， 控制 MRS向逻辑主叫播放回铃音，并当第二逻辑被叫的最终响应为摘机时， 控制 MRS停止向逻辑主叫播放回铃音；
所述 CTD WS进一步包括： 消息显示模块， 用于通过 CTD WEB实时 显示第二逻辑被叫的响应。
19、 根据权利要求 17或 18所述的系统， 其特征在于，
所述状态上报模块还用于， 当第二逻辑被叫的最终响应不为摘机时， 向 CTD WS上报第二逻辑被叫的响应；
所述消息显示模块还用于， 通过 CTD WEB显示呼叫第二逻辑被叫失 败的提示信息；
所述 CTD WS还包括： 呼叫请求模块， 用于通过 CTD WEB收到继续 呼叫第二逻辑被叫的请求， 并将该请发送给 CTD AS；
所述基本呼出模块还用于， 收到继续呼叫第二逻辑被叫的请求后， 继 续呼叫第二逻辑被叫；
所述呼叫保持模块还用于， 没有收到继续呼叫第二逻辑被叫的请求时， 恢复逻辑主叫和第一逻辑被叫的桥接。
20、 根据权利要求 11所述的系统， 其特征在于， 所述 CTD WS进一步包括： 呼叫请求模块， 用于接收通过 CTD WEB 发起的对逻辑主叫的三方通话请求， 并将该三方通话请求发送给 CTD AS; 消息显示模块， 用于收到接受请求的响应后， 通过 CTD WEB显示提示信 所述 CTD AS进一步包括： 请求响应模块， 用于发送接受请求的响应 给 CTD WS; 三方通话模块， 用于将逻辑主叫与 MRS关联， MRS对逻辑 主叫混音， 逻辑主叫加入会议； 将第二逻辑被叫与 MRS关联， MRS对第 二逻辑被叫混音， 第二逻辑被叫加入会议； 将第一逻辑被叫与 MRS关联， MRS对第一逻辑被叫混音， 第一逻辑被叫加入会议。
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