WO2008037199A1

WO2008037199A1 - A communicating method of unifying communication service, a unifying communication service system and corresponding apparatus

Info

Publication number: WO2008037199A1
Application number: PCT/CN2007/070421
Authority: WO
Inventors: Hongjin Yuan; Qingchun Shen; Liyan Song
Original assignee: Huawei Technologies Co., Ltd.
Priority date: 2006-09-25
Filing date: 2007-08-06
Publication date: 2008-04-03
Also published as: CN1968318A

Abstract

A communication method of unifying communication service notifies a new call request to a called terminal when the called terminal is busy. The called terminal performs selection between continuing and holding. Control logic of corresponding call holding, call recovering and the like is performed by an application cooperated with a control exchange center, and is also performed by judging of the exchange control center. The present invention also provides a corresponding unifying communication service system, an exchange control center and an application server. The present invention can make subscriber select to hold or to put though the new call when subscriber is busy, so as to prevent from missing the new call when subscriber is busy.

Description

Communication method for unified communication service and unified communication service system and related device This application claims to be submitted to the Chinese Patent Office on September 25, 2006, the application number is 200610139792.6, and the invention name is "communication method of unified communication service and unified communication service system and The priority of the Chinese Patent Application, the entire disclosure of which is incorporated herein by reference. Technical field

The present invention relates to the field of communication technologies, and in particular, to a communication method for a unified communication service, and a unified communication service system and related devices.

Background technique

The unified communication service is a comprehensive intelligent service, which further develops the Internet Protocol (IP) communication, which is unified by using the Session Initiation Protocol (SIP) and the solution including the mobile solution. The number is the core, combining traditional intelligent services with IP networks, and integrating user communication portals using various communication methods and communication terminals, truly realizing the unification and simplification of various types of communication. With a unified communications solution, users can communicate with each other at any time, regardless of location, time or device, and can communicate with any media using any device, enabling real-time access to fixed-line users, mobile phone users, and Internet users. Or a business experience that is not real-time communication. When using the unified communication service, the user can make a call through the Internet terminal, make a call to dial (CTD: Check To Dial), answer an incoming call, hold a conference, and the like.

The existing unified communication service network is as shown in FIG. 1, and includes an application server 1, an exchange control center, a unified communication terminal 3, and a legacy terminal 4.

The application server 1 runs the business logic of the unified communication, performs scheduling control on the switching control center 2, coordinates operations and cooperation between the functional components, and provides a unified communication service experience for the user.

The switching control center 2 is configured to exchange and control communication between the legacy terminal 4 and the unified communication terminal 3, and between the unified communication terminals 3, complete triggering of the unified communication service, and accept the indication of the application server 1 to perform the connection of the call. , event reporting, message forwarding and other functions.

The unified communication terminal 3 is connected to the switching control center 2 via the Internet or a packet core network, and the unified communication terminal 3 needs to sign a unified communication service on the application server 1. The unified communication terminal can use an internet terminal, for example, a client software on a personal computer, a browser, or the like, or a smart phone terminal directly or indirectly connected to the Internet, and can also use an intelligent multimedia interactive function. Multimedia communication equipment such as mobile phones. The legacy terminal 4 is connected to the switching control center 2 through a switching core network including a Public Switched Telephone Network (PSTN), a Public Land Mobile Network (PLMN), and a Next Generation Network (NGN: Next Generation Network) and so on. Conventional terminals include mobile phones, landlines, and the like.

Through the coordinated control of the application server and the relay forwarding of the exchange control center, the unified communication service users can communicate with other unified communication service users or traditional telephone users through various unified communication terminals.

However, in the existing communication method for implementing the unified communication service, after the unified communication terminal rings, only the answer and the rejection can be selected. After the user answers the call, the other calls cannot be called in, which results in limited user use, which is very inconvenient.

Summary of the invention

The embodiments of the present invention provide a communication method in a unified communication service, a corresponding unified communication service system, a switching control center, and an application server, which can not lose new incoming calls when the called unified communication terminal is busy.

The technical solution adopted to achieve the embodiments of the present invention is:

A communication method in a unified communication service, including:

Receiving a call request called a unified communication terminal;

After determining that the unified communication terminal is busy, the call request is notified to the unified communication terminal. A unified communication service device, comprising:

a receiving processing unit, configured to receive a call request initiated by the unified communications terminal, and determine that the unified communications terminal is busy, notify the call notification unit;

a call notification unit, configured to notify the unified communication terminal of the call request.

A unified communication service system, including:

a switching control center, configured to receive a call request of the unified communication terminal, and trigger the request to the application server;

And an application server, configured to send, when the unified communication terminal is busy, a notification that a new call request is sent to the unified communication terminal.

A unified communication service system, including:

a switching control center, configured to receive a call request from a calling party to the unified communications terminal, and touch the request Sending to the application server; receiving an instruction that the application server continues the unified communication terminal, and when determining that the unified communication terminal is busy, sending a connection request to the unified communication terminal;

And an application server, configured to send, according to the trigger of the exchange control center, an instruction to connect to the unified communication terminal to the exchange control center.

An exchange control center, including:

a service processing unit, configured to receive a call request from the calling party to the unified communication terminal, and trigger the request to the application server; receive an instruction that the application server connects to the unified communication terminal, and when determining that the unified communication terminal is busy, The unified communication terminal sends a connection request.

An application server, comprising:

And a service logic unit, configured to receive a call request sent by the exchange control center to the unified communication terminal, and when determining that the unified communication terminal is busy, send a message to the unified communication terminal to notify that there is a new incoming call.

A unified communication terminal, comprising:

a call request receiving unit, configured to receive a new incoming notification message from the network side while the unified communication terminal performs the current call;

The call selection unit is configured to select a call hold for the current party or the calling party of the current call, and send the selection information.

With the above technical solution, the embodiment of the present invention achieves certain technical effects. When the called unified communication terminal is busy, the embodiment of the present invention notifies the called party to the called party for the caller state control selection, and The application server or the exchange control center performs the corresponding control logic processing method, so that the user can freely choose to hold or answer the new call when busy, avoiding the loss of the new call when busy.

The embodiments of the present invention are further described in detail below by way of specific embodiments and drawings. DRAWINGS

1 is a schematic structural diagram of a conventional unified communication service network;

2 is a schematic flowchart of a communication method in a unified communication service according to an embodiment of the present invention; FIG. 3 is a schematic diagram of a signaling flow of an application example of a communication method according to Embodiment 1;

4 is a schematic flowchart of a communication method in a unified communication service according to Embodiment 2 of the present invention; FIG. 5 is a schematic diagram of a signaling flow of an application example of a communication method according to Embodiment 2;

6 is a schematic structural diagram of a unified communication service system according to Embodiment 3 of the present invention; 7 is a schematic structural diagram of an exchange control center according to Embodiment 5 of the present invention;

FIG. 8 is a schematic structural diagram of an application server according to Embodiment 6 of the present invention.

detailed description

The embodiment of the invention provides a communication method in the unified communication service: when the called unified communication terminal is busy, the new call request is still notified to the called party, and the called party performs the selection of the connection and the hold state. Control logic such as call hold and recovery can be performed by the application server in conjunction with the control exchange control center, or by the exchange control center. Further, after performing call hold, the unified communication terminal can also use a similar communication party state control selection method to hang up the current party and arbitrarily select to resume answering a held party. For different control logic execution modes, the present invention also provides a corresponding unified communication service system, an exchange control center, and an application server. The method, system and apparatus of the present invention are described in detail below.

Embodiment 1 This embodiment provides a communication method in a unified communication service, where a communication partner state control logic is implemented by an application server in conjunction with a control exchange control center. The process is as shown in FIG. 2, and includes:

Al, the exchange control center receives the call request of the calling party, and the calling party may be a unified communication user or a traditional terminal user. When determining that the called party is a unified communication user, the switching control center triggers the call request to the application server;

A2. The application server receives the call request, determines the status of the called party according to the called number included therein, and when determining that the called party is busy, the application server notifies the called request to the called party; If the called party is idle, it can be executed according to the normal unified communication called connection connection process; based on the SIP protocol used by the communication between the normal application server and the unified communication terminal, the application server notifies the called request to the called party. :

A21: The application server sends a message to the called party that the new incoming message is sent, and the message may be a SIP: Info message or a SIP: Message message outside the session;

A22. The application server controls to put back a ring tone to the calling party, to indicate to the calling party that the call request is sent to the called party, and is waiting for the called party to select the answering; the application server may first determine the ring back tone function that may be set by the called party. Whether the called party sets the ring back tone, if not, directly notifies the called end office to play the ordinary ring back tone; if so, controls the playback device, such as a media resource server (MRS: Media Resource Server) and other related playback resources, The calling party plays the ring tones; A3. The called party chooses to hold the call to the current party or the current calling party, and notifies the application server; the called terminal can display the incoming call information, such as the incoming call time and the incoming call number, in the form of a list, etc., so that the called party is called. The user can conveniently select according to the incoming call information; the selection result can be sent to the application server in the form of a SIP: Info message or a SIP: Message message outside the session; A4, the application server performs the selection of the selected party according to the selected selection of the called party. Call hold; Corresponding to the control interaction between the existing application server and the exchange control center, the process can be used:

A41. The application server sends a call hold instruction to the selected party to the exchange control center according to the selected party number in the received called selection message.

A42. The exchange control center performs a call hold operation on the selected party according to the call hold command, and sets its media stream attribute to an inactive state;

A43. The application server controls placing the call hold tone on the selected party to indicate to the selected party that the call is in the hold waiting state, and generally can connect the media stream of the selected party to the related playback resource such as MRS to perform call hold tone playback. ;

A5. If the called party selects to hold the current caller to answer the new incoming call in step A4, the exchange control center continues to connect the caller under the control of the application server after performing the call hold of the current caller; The connection process can be performed according to the connection process of the existing unified communication service, including:

The switching control center receives an instruction sent by the application server to connect the called party and switch the calling party; the switching control center performs an instruction to turn on the called party, and connects the called media stream to the calling party; Directly, the calling media stream is connected to the called party; the two parties can make a call;

In order to achieve more flexible control of the call form, when the called party holds one or more calls, it can use the method similar to the above state control selection during the call to hold or hang up the current call and answer any of the hold. One side, the following is described by steps A6 and A7 respectively, and the two steps appear in the actual process according to the user's choice, regardless of the order;

A6, the called party chooses to keep the current party and resumes a certain holding party; the called terminal can display the status and information of each incoming call on the interface, in addition to the call time and the caller number, the duration of the call and the duration of the call can be included. Etc., in order to facilitate the selected user; the execution process includes:

A61. The called party sends a message to the application server to keep the current party and restore a held party; the result of the selection may be in the form of a SIP: Info message or a SIP: Message message outside the session. Sent to the application server;

A62. The application server performs call hold on the current party according to the message, and may perform the process according to step A4, and then send an instruction to the exchange control center to switch the call in the hold and the call to the hold in the hold;

A63. The switching control center performs an operation of connecting the holding party to the called party according to the instruction of the calling party in the on-hold; and maintaining the call according to the instruction for restoring the call of the calling party. The middle party performs a call recovery operation, disconnects its media connection from the call hold tone playing device, and connects the called party to the holding party;

A7. The called party chooses to hang up the current party and resumes a holding party. The execution process includes: A71. The called party sends a message to the application server to hang up the current party and resume a certain holding party; Sending to the application server in the form of a SIP: Info message or a SIP: Message message outside the session;

A72. The application server sends an instruction to release the current party and resume the call of the calling party according to the message to the exchange control center.

A73. The exchange control center performs a call release operation on the current party according to the instruction to release the current party, and the release operation may be performed according to an existing call release process; according to the instruction for restoring the call of the call in the call, A call recovery operation is performed on the in-call party, the media connection is disconnected from the call-holding tone playing device, and the called party is connected to the holding party.

In order to better understand the present invention, an actual application flow of the above communication method using the SIP protocol will be described below with a specific application example. Assume that the called unified communication terminal is the Internet terminal A, the other party that is making a call with it is the terminal B, and the calling party that initiates the new call is the terminal C;

The business process is as follows: During the call between A and B, C calls A, A keeps B answering C; A calls with C, A keeps C answering B; A calls with B, A hangs up B answers C. The signaling process is shown in Figure 3 and includes:

Step 101: The terminal user C initiates an Internet terminal user for unified communication to the exchange control center.

A call;

Step 102: The exchange control center determines that the called party A is a unified communication user, and uses the INVITE message to trigger the unified communication service to the application server;

Step 103: The application server executes the business logic to determine the status of the unified communication user A. When it is judged that A is in the "busy" state, the subsequent steps are continued; of course, if A is in the "idle" state, the application server controls the switching control center to perform the usual unified communication called connection connection process;

Step 104: The application server sends an INVITE message to the Internet terminal to notify the terminal A that there is a new call from C.

Step 105: The application server controls to release the ring tone to the calling party C.

Step 106: After receiving the new incoming call notification, the Internet terminal A displays the caller number and other information on the interface, and the user selects the call to keep the current caller B answering C;

Step 107, the Internet terminal A sends a SIP message to the application server to notify the application server to hold the B call, and answer C;

Step 108: The application server sends a call hold command to the exchange control center by using a RE-INVITE message to initiate a call hold to the B call;

Step 109: The exchange control center performs call hold on B according to the call hold command, sets the media stream attribute of B to an inactive state, and disconnects the media of B from A;

Step 110: The application server controls to connect the media stream of B to the related playback resource of the playback device, and put a call hold tone to the B;

Step 111: The application server sends a C command to the exchange control center by using a RE-INVITE message;

Step 112: The exchange control center connects the media stream of C to A by using a RE-INVITE message; Step 113: The application server sends an instruction for connecting A to the exchange control center by using an UPDATE message;

Step 114, the exchange control center connects the media stream of A to C;

Step 115: The application server sends a SIP message to the Internet terminal A to notify the terminal A that the B call is held and the C is successfully received.

At this time, the media streams of A and C are connected to each other, and A and C can make a call;

Step 116: The user selects a call on the interface to keep the current party C to answer the held party B. Step 117: The terminal A sends a SIP message to the application server to notify the application server to hold the C call, and restore B;

Steps 118 to 120, the application server performs call hold on the terminal C, which is the same as steps 108 to 110; Step 121: The application server sends an instruction for turning on B to the exchange control center by using the RE-INVITE message.

Step 122: The exchange control center sends a RE-INVITE message to terminal A to connect the media stream of B to A;

Step 123: The application server sends a command for recovering the B call to the exchange control center by using the RE-INVITE message;

Step 124: The switching control center performs call recovery on B, disconnects its media connection from the call hold tone playing device, and connects the media stream of A to B;

Step 125: The terminal B returns to the exchange control center and the call is successfully restored.

Step 126: The exchange control center sends an OK message confirming the RE-INVITE message in step 123 to the application server, and notifies the application server of the call recovery success message;

Step 127: The application server sends a SIP message to the Internet terminal A to notify the terminal A that the C call is held and the answer B is successful.

At this time, the media streams of A and B are connected to each other, and A and B can resume the call;

Step 128: The user selects to hang up the current party B on the interface to answer the held party C;

Step 129, the terminal A sends a SIP message to the application server to notify the application server to hang up B, and restore C;

Step 130: The application server sends a command for releasing B to the exchange control center by using a BYE message; Step 131: The exchange control center performs release of the B call;

Steps 132 to 137, the application server performs call recovery on the terminal C, which is the same as steps 121 to 126;

Step 138: The application server sends a SIP message to the Internet terminal A to notify the terminal that A hangs up B, and receives C successfully;

At this time, the media streams of A and C are connected to each other, and A and C can resume the call.

Embodiment 2 This embodiment provides a communication method in a unified communication service. The difference between the method and the first embodiment is that the communication state control logic is implemented by the exchange control center, and the process is as shown in FIG. 4 . As shown, including:

Bl, the exchange control center receives the call request of the calling party, and when determining that the called party is the unified communication user, the exchange control center triggers the call request to the application server; B2. The application server sends an instruction to connect to the exchange to the exchange control center, and the exchange control center performs a notification of the new call to the called party. In combination with the normal call connection process of the exchange control center, the notification process includes:

B21. The exchange control center receives an instruction of the application server to connect to the called party, and determines that the called state is busy. To avoid conflict with the terminal capability, the exchange control center determines whether the called party supports call hold, and if yes, sends a connection request to the called party, if Otherwise, the application server responds to the called busy according to the usual processing manner; of course, if the exchange control center determines that the called state is idle, it can be executed according to the normal unified communication called connection connection process;

B22. The switching control center receives the ringing information returned by the called party, and sends the ring back tone signaling to the application server.

B23. After receiving the ring back tone signaling, the application server controls to release the ring tone to the calling party; when the ring tone is returned, the function of determining the called color ring tone function may also be performed;

B3. The called party selects to hold the call to the current party or the current calling party, and notifies the switching control center;

B4. The exchange control center performs call hold on the selected party according to the selected selection of the called party; corresponding to the control interaction mode between the existing application server and the exchange control center, the process can be applied:

B41. The exchange control center sends call hold information to the selected party to the application server according to the selected party number in the received called selection message.

B42. The application server returns a call hold instruction to the selected party to the exchange control center. B43. The exchange control center performs a call hold operation on the selected party according to the call hold instruction, and sets the media stream attribute to an inactive state;

B44. The application server controls the selected party to place the call hold tone, and connects the selected media stream to the MRS and other related playback resources to play the call hold tone, and the application server sends the confirmation that the call is successfully sent to the exchange control center. Called terminal

B5. If the called party selects to hold the current caller to answer the new incoming call in step B4, the exchange control center also connects the caller under the control of the application server; based on the connection process of the existing unified communication service, To trigger the connection process from the exchange control center, you need to execute:

The switching control center receives the message of the calling party sent by the called party, and sends the answering message to the application server; After that, the switching control center performs the connection to the calling party under the control of the application server; the connection process can be performed according to the connection process of the existing unified communication service, see step A4 in the first embodiment;

Similar to the first embodiment, in the method of the embodiment, when the called party holds one or more calls, it can also use a method similar to the above state control selection during the call to keep the current call and receive the call. Either one of them is described below in step B6. This step appears in the actual process according to the user's choice. As for any party that hangs up the current call and picks up the call, it is usually used because the terminal hangs up the call through the exchange control center. The way to hang up after the call is the same as the process of connecting the existing idle time, so it will not be described again;

B6. The called party selects to keep the current party and resumes a holding party. The execution process includes: B61. The called party sends a request to the exchange control center to keep the current party;

B62. The exchange control center performs call hold on the current party according to the request; and can be performed by referring to step B4;

B63. After receiving the message that the exchange control center remains successful, the called party sends a request to the exchange control center to resume a held party;

B64. The switching control center sends the recovery request to the application server, and receives an instruction returned by the application server to resume the call of the calling party;

B65. The switching control center performs a call recovery operation on the calling party in accordance with the instruction for restoring the call of the calling party, disconnects the media connection from the call holding tone playing device, and connects the called party. To the party in the hold.

The following is also a specific application example to illustrate an actual implementation flow of the above communication method using the SIP protocol. Assume that the called unified communication terminal is the Internet terminal A, the party that is making a call with it is the terminal B, and the calling party that initiates the new call is the terminal C;

The business process is: During a call between A and B, C calls A, A keeps B answering C; A calls with C, A keeps C answering B. The signaling process is shown in Figure 5, including:

Step 201: The terminal user C initiates an Internet terminal user for unified communication to the exchange control center.

A call;

Step 202: The exchange control center determines that the called party A is a unified communication user, and uses the INVITE message to trigger the unified communication service to the application server;

Step 203: The application server executes the business logic as usual, for example, according to the current reachability of the called party A. Information selection connection method, etc.;

Step 204: The application server sends an continuation called A command to the exchange control center by using an INVITE message.

Step 205: The exchange control center receives the instruction of the application server to connect to the called party A, determines that the status of the A is "busy", and then performs a call hold control judgment according to the capability of the terminal A, and determines whether the called party supports the call hold, and the judgment result is yes;

Step 206: The exchange control center sends a connection request of C to the called A by using the INVITE message; Step 207, the called party A notifies the exchange control center of the called ringing by using the Ringing message; Step 208, the switching control center uses the Ringing message to the application server. Sending back ring tone signaling; Step 209, the application server controls to release the ring tone to the calling party C;

Step 210: After receiving the connection request of C, the Internet terminal A displays the caller number and other information on the interface, and the user selects the call to keep the current party B answering C;

Step 211: The Internet terminal A sends a call hold information to the exchange control center by using a RE-INVITE message;

Step 212: The exchange control center sends the B call hold information to the application server by using a RE-INVITE message;

Step 213 to step 215, the application server performs B call hold, and steps 108 to 110 in the first embodiment;

Step 216: The application server sends an OK message confirming the RE-INVITE message in step 212 to the exchange control center, and notifies the exchange control center that the B remains successful.

Step 217: The exchange control center sends an OK message confirming the RE-INVITE message in step 211 to the called party A, and notifies the called party A that the pair B remains successful.

Step 218, the called A sends an OK message to the exchange control center to confirm the INVITE message in step 206, and notify the answering C;

Step 219: The exchange control center sends an OK message confirming the INVITE message in step 204 to the application server, and notifies the application server to initiate the answering C;

Step 220: The application server sends an instruction for connecting A to the exchange control center by using an UPDATE message.

Step 221, the exchange control center connects the media stream of A to C; Step 222: The application server sends an instruction for turning on C to the exchange control center by using a RE-INVITE message.

Step 223, the exchange control center connects the media stream of C to A;

Step 224: The user selects a call on the interface to keep the current party C and listens to the held party B. Step 225 to step 231, the terminal A initiates call hold to C, and the execution process is the same as steps 211 to 217;

Step 232: The called A sends a request to the exchange control center to resume the answer B information by using the RE-INVITE message;

Step 233: The exchange control center sends the recovered answer B information requested by the called A to the application server by using a RE-INVITE message;

Step 234: The application server sends a command for recovering the B call to the exchange control center by using the RE-INVITE message;

Step 235, the exchange control center connects the media stream of A to B;

Step 236: The terminal B returns a call recovery success information to the exchange control center.

Step 237: The exchange control center sends an OK message confirming the RE-INVITE message in step 234 to the application server, and notifies the terminal B that the call is successfully restored.

Step 238: The application server sends an OK message to the exchange control center to confirm the RE-INVITE message in step 233, and notify the terminal B that the call is successfully restored.

Step 239: The exchange control center sends an OK message to the called A to confirm the RE-INVITE message in step 232, and notify the call B that the call is successfully restored;

At this time, the media streams of A and B are connected to each other, and A and B can resume the call.

By further adopting a similar method of controlling the state of the communication partner during the call, the user can keep or hang up the current party at any time and arbitrarily choose to resume receiving a caller in the hold, which greatly enhances the flexibility of control and is convenient. User's use.

The unified communication service system corresponding to the above communication method will be described in detail below.

Embodiment 3: A unified communication service system, as shown in FIG. 6, includes a switching control center 11, an application server 12, and a unified communication terminal 13;

The exchange control center 11 is configured to receive a call request from the calling party to the unified communication terminal 13, and The request is triggered to the application server 12; operations such as call hold, call recovery, or call release are performed under the control of the application server 12;

The application server 12 is configured to, when determining that the called unified communication terminal 13 is busy, send a message notifying that the new incoming call is received to the unified communication terminal 13, and control the ring back tone to be placed on the calling party; and receive the unified communication terminal 13 The selected selection message about call hold, connection, resume or hang up, according to the selection of the unified communication terminal 13, controls the exchange control center 11 to perform call hold, call connection, call recovery or call release to the selected party;

The unified communication terminal 13 is configured to provide a selection interface to the user, select a party that performs call hold, connect, resume, or hang up; receive a notification message with a new incoming call sent by the application server 12; hold, connect, and resume the call Or the hang up selection message is notified to the application server 12.

The unified communication service system of this embodiment can execute the communication method provided in the first embodiment.

Embodiment 4: A unified communication service system, the basic service device is similar to that in Embodiment 3, including an exchange control center, an application server, and a unified communication terminal;

The exchange control center is configured to receive a call request from the calling party to the called unified communication terminal, and trigger the request to the application server; receive an instruction of the application server to connect to the unified communication terminal, and when determining that the unified communication terminal is busy, to the unified communication The terminal sends the connection request; receives the ringing information returned by the unified communication terminal, sends the ring back tone signaling to the application server; performs the call hold, call connection or call recovery operation on the selected party according to the selection of the unified communication terminal;

An application server, configured to send, according to a trigger of the exchange control center, an instruction for connecting the unified communication terminal to the exchange control center; receiving the ringback tone signaling sent by the exchange control center, and controlling to release the ring tone to the caller;

The unified communication terminal is configured to provide a selection interface to the user, select the other party to perform call hold, resume or resume; receive the connection request sent by the exchange control center; and notify the exchange control center of the selection message about the call hold, resume or connection.

The unified communication service system of this embodiment can execute the communication method provided in the second embodiment.

Embodiment 5: An exchange control center, as shown in FIG. 7, includes a service processing unit 111 and a call control unit 112;

The service processing unit 111 is configured to receive a call request from the calling party to the called unified communication terminal, and trigger the request to the application server; and receive an instruction of the application server to connect to the unified communication terminal, when determining When the unified communication terminal is busy, sending a connection request to the unified communication terminal; receiving the ringing information returned by the unified communication terminal, and sending the ring back tone signaling to the application server;

The call control unit 112 is configured to receive, by the unified communications terminal, selection information about call hold, connection, resume, or hang up, and notify the service processing unit 111 to perform call hold on the selected party according to the selection of the unified communication terminal, Call connection or call recovery operation;

The switching control center of this embodiment can be applied to the unified communication service system provided in the fourth embodiment. Embodiment 6, an application server, as shown in FIG. 8, includes a service logic unit 121 and a state control unit 122;

The service logic unit 121 is configured to receive a call request sent by the exchange control center to the unified communication terminal, and when determining that the called unified communication terminal is busy, send a message notifying the new communication terminal to the unified communication terminal, and control Putting back a ring tone to the calling party;

The status control unit 122 is configured to receive a selection message about call hold, connection, resume, or hang up sent by the unified communication terminal, and notify the service logic unit 121 to control the exchange control center to perform a call to the selected party according to the selection of the unified communication terminal. Hold, call connection, call recovery or call release;

The switching control center of this embodiment can be applied to the unified communication service system provided in the third embodiment. The communication method in the unified communication service provided by the present invention and the corresponding unified communication service system, the exchange control center and the application server are described in detail. The principle and implementation manner of the present invention are described in the following. The description of the above embodiments is only for helping to understand the method of the present invention and its core ideas; at the same time, for those skilled in the art, according to the idea of the present invention, there will be changes in the specific embodiments and application scopes. In summary, the content of the specification should not be construed as limiting the invention.

Claims

Rights request

A communication method in a unified communication service, characterized in that it comprises:

Receiving a call request called a unified communication terminal;

After determining that the unified communication terminal is busy, the call request is notified to the unified communication terminal.

The communication method in the unified communication service according to claim 1, wherein the method further comprises: receiving the unified communication terminal selection information, and performing call processing according to the selection information.

The communication method in the unified communication service according to claim 2, wherein: the unified communication terminal selection information is to select a current party or the call to perform call holding;

The step of performing call processing according to the selection information includes:

Call hold to the selected party is performed in accordance with the selection information of the unified communication terminal.

The communication method in the unified communication service according to claim 3, characterized in that: if receiving the call hold for the current party, the method further comprises: performing call connection on the caller currently initiating the call.

The communication method in the unified communication service according to claim 4, wherein: the entity that receives the call request initiated by the unified communication terminal is an exchange control center; and the determining that the unified communication terminal is busy, The entity that calls the notification request to the unified communication terminal is an application server or an exchange control center;

The entity that receives the unified communication terminal selection information is an application server or an exchange control center.

The communication method in the unified communication service according to claim 5, wherein the notification, by the application server, that the call request is notified to the unified communication terminal comprises:

The application server sends a message to the unified communication terminal notifying that there is a new incoming call;

The application server controls to put back a ring tone to the calling party.

The communication method in the unified communication service according to claim 6, wherein the application server performs call hold to the selected party according to the selection of the unified communication terminal, including: the application server according to the received Determining the selection of the unified communication terminal, and transmitting a call hold command to the selected party to the exchange control center;

The switching control center performs a call holding operation on the selected party according to the call holding instruction, and sets its media stream attribute to an inactive state;

The application server controls the call hold tone to the selected party.

The communication method in the unified communication service according to claim 6, wherein the switching control center performs the connection to the calling party, including:

The switching control center receives an instruction sent by the application server to connect the unified communication terminal and turn on the calling party;

The switching control center performs an operation of turning on the unified communication terminal to the calling party and turning the calling party to the unified communication terminal in accordance with the turn-on command.

The communication method in the unified communication service according to claim 6, wherein: after the application server performs the call hold of the selected party according to the selection of the unified communication terminal, the unified communication terminal further applies to the application. The server sends a message to keep the current party and resume a held party;

The application server performs call hold to the current party according to the message, and then issues an instruction to the exchange control center to switch the call in the hold and resume the call of the call in the hold;

The switching control center performs an operation of connecting the holding party to the unified communication terminal according to the instruction of the party in the on hold; and the holding the call according to the instruction for restoring the call of the party in the hold The party performs a call recovery operation, disconnects its media connection from the call hold tone playing device, and connects the unified communication terminal to the holding party.

10. The communication method in the unified communication service according to claim 6, wherein: after the application server performs the call hold of the selected party according to the selection of the unified communication terminal, the unified communication terminal further applies to the application. The server sends a message to hang up the current party and resume a party in the hold;

The application server delivers an instruction to release the current party and resume the call of the calling party in accordance with the message to the exchange control center;

The switching control center performs a call release operation on the current party according to the instruction to release the current party; performs a call recovery operation on the held party according to the instruction to resume the call in the call, and media the same The connection is disconnected from the call hold tone playing device, and the unified communication terminal is connected to the holding party.

The communication method in the unified communication service according to claim 5, wherein the switching control center notifying the call request to the unified communication terminal includes:

The switching control center sends a connection request to the unified communication terminal, The switching control center receives the ringing information returned by the unified communications terminal, and sends the ring back tone signaling to the application server;

After receiving the ring back tone signaling, the application server controls to put back a ring tone to the calling party.

The communication method in the unified communication service according to claim 11, wherein: after receiving the instruction of the application server to connect the unified communication terminal, the exchange control center further determines whether the unified communication terminal supports the call. If yes, send a connection request to the unified communication terminal, if otherwise, the application server responds that the unified communication terminal is busy.

The communication method in the unified communication service according to claim 11, wherein the performing, by the switching control center, performing call holding to the selected party according to the selection of the unified communication terminal comprises:

The switching control center sends the call holding information to the selected party to the application server according to the received selection of the unified communication terminal,

The application server returns a call hold instruction to the selected party to the exchange control center,

The application server also controls the acknowledgment that the selected party places the call hold tone and the call remains successful through the exchange control center to the unified communication terminal.

The communication method in the unified communication service according to claim 11, wherein the switching control center performs connection to the calling party:

The switching control center receives the message sent by the unified communications terminal to answer the calling party, and sends the answering message to the application server;

The application server separately sends an instruction to connect to the unified communication terminal and turn on the calling party to the exchange control center;

The switching control center performs an operation of turning on the unified communication terminal and the calling party in accordance with the turn-on command.

The communication method in the unified communication service according to claim 11, wherein: after the exchange control center performs the call hold of the selected party according to the selection of the unified communication terminal, the unified communication terminal further The exchange control center sends a request to keep the current party;

The exchange control center performs call hold to the current party according to the request; After receiving the message that the exchange control center remains successful, the unified communication terminal sends a request to the exchange control center to resume a held party;

The switching control center sends the recovery request to the application server, and receives an instruction returned by the application server to resume the call of the calling party;

The switching control center performs a call recovery operation on the holding party in accordance with the instruction to resume the call of the calling party, disconnects the media connection from the call holding tone playing device, and connects the unified communication terminal to the Keep the party in progress.

The communication method in the unified communication service according to any one of claims 6 to 15, wherein the application server controls to release the ring tone to the calling party, including:

The application server determines whether the unified communication terminal sets the CRBT, and if not, notifies the unified communication terminal to play the ringback tone; if so, controls the playback device to play the CRBT to the calling party.

17. A unified communication service device, characterized by:

The unified communication service device according to claim 17, wherein the device further comprises:

The selection information processing unit is configured to receive the unified communication terminal selection information, and perform call processing according to the selection information.

19. A unified communication service system, characterized by:

20. The unified communication service system according to claim 19, wherein:

The application server is further configured to control a ringback tone for the calling party; and according to the selection of the unified communication terminal, control the switching control center to perform call holding for the selected party.

21. The unified communication service system according to claim 20, wherein:

The switching control center is further configured to perform call connection and call under the control of the application server. Call recovery or call release operation;

The application server is further configured to receive a selection message about the call connection, recovery, or hang up sent by the unified communication terminal, and control the exchange control center to perform a call to the selected party according to the selection of the unified communication terminal. Connection, call recovery, or call release.

22. A unified communication service system, characterized by:

An exchange control center, configured to receive a call request from the calling terminal to the unified communication terminal, and trigger the request to the application server; receive an instruction of the application server to connect the unified communication terminal, and when determining that the unified communication terminal is busy Sending a connection request to the unified communication terminal;

The unified communication service system according to claim 22, wherein: the exchange control center is further configured to receive ringing information returned by the unified communication terminal, and send a ring back tone message to the application server. Order

The application server is further configured to receive the ring back tone signaling sent by the switching control center, and control the ring back tone to be sent to the calling party.

The unified communication service system according to claim 23, wherein: the exchange control center is further configured to perform call hold on the selected party according to the selection of the unified communication terminal.

The unified communication service system according to claim 24, wherein: the exchange control center is further configured to perform a call connection or call recovery operation on the selected party according to the selection of the unified communication terminal.

26. An exchange control center, comprising:

27. The exchange control center of claim 26, wherein:

The service processing unit is further configured to receive ringing information returned by the unified communications terminal, and send the ring back tone signaling to the application server.

28. The exchange control center according to claim 26 or 27, wherein: said exchange The control center also includes:

The call control unit is configured to receive the selection information sent by the unified communication terminal, and notify the service processing unit to perform call processing according to the instruction of the unified communication terminal.

The exchange control center according to claim 28, wherein: said selection information comprises: selection information about call hold, connection, resume or hang up;

The call processing performed by the service processing unit includes: call hold, call connection or call recovery operation for the selected party.

30. An application server, comprising: a service logic unit;

The service logic unit is configured to receive a call request sent by the exchange control center to the unified communication terminal, and when determining that the unified communication terminal is busy, send a message to the unified communication terminal to notify that there is a new incoming call. .

31. The application server of claim 30, wherein:

The service logic unit is further configured to control to put back a ring tone to the calling party.

The application server according to claim 30 or 31, wherein: the application server further comprises:

And a status control unit, configured to receive the selection information sent by the unified communication terminal, and notify the service logic unit to control the exchange control center to perform call processing on the selected party according to the instruction of the unified communication terminal.

33. The application server according to claim 32, wherein: the selection information comprises: selection information of call hold, connection, resume or hang up;

The call processing performed by the status control unit includes: call hold, call connection or call resume operation or call release operation for the selected party.

34. A unified communication terminal, comprising:

35. The unified communication terminal according to claim 34, wherein:

The selection information includes: selection information of call hold, connection, resume or hang up.