WO2007068201A1

WO2007068201A1 - A method, a control terminal and a system for realizing click calling service

Info

Publication number: WO2007068201A1
Application number: PCT/CN2006/003386
Authority: WO
Inventors: Fan Zhang
Original assignee: Huawei Technologies Co., Ltd.
Priority date: 2005-12-13
Filing date: 2006-12-13
Publication date: 2007-06-21
Also published as: CN1870638A; CN100527739C

Abstract

A method, a control terminal and a system for realizing the click calling service include: firstly, the receiving control terminal on the network side initiates the click calling request to the network side, and then determines the calling terminal and the called terminal of the click calling service; then the network side communicates with the calling terminal and the called terminal respectively by the SIP message, and controls the said calling terminal and the called terminal to connect and realize the click calling service. It solves the problem existed in the prior arts that the control terminal is demanded by the click calling service too firmly and the regulation is not consummated, and the terminal just needs to identify the SIP message even during the course of the click calling service without other special demand, and the terminal generally supports the SIP.

Description

Method, control terminal and system for realizing click-to-call service

The present invention relates to the field of network communication technologies, and in particular, to a method, a control terminal and a system for implementing a click-to-call service. Background of the invention

With the continuous development of telecommunications and Internet technologies, the combination of telecom voice and the Internet has become increasingly close. Click-to-call service is a new type of business that combines voice and the Internet. The click-to-call service has multiple ways, for example, directly clicking a name in the address book to initiate a call, or clicking an entry in the call record to call someone, or setting a link in a web page, and the end user clicks The link calls the number embedded in the link, and so on.

To facilitate the implementation of the click-to-call service, a SIP-Sessional Initiation Protocol (SDP) can be used in conjunction with a Session Description Protocol (SDP-Sessional Description Protocol) to negotiate the media attributes of the session. The SIP protocol is proposed by the Internet Engineering Task Force (IETF) in the Next Generation Network (NGN-Next Generation Network) for initiating, establishing, and releasing sessions. The SIP protocol has flexible and simple features and powerful call control features.

In the prior art, a click-to-call service is implemented by using a SIP-based third party call control (3PCC). The so-called 3PCC refers to the establishment of a session between the other two by a third-party controller, and the controller is responsible for media negotiation between the two parties. For example, in the public network (PSTN-Publ ic Swi tched Telephone Network), third-party call control is usually used for conference and wiring services (the operator creates a call to connect the other parties). The SIP-based third-party call control method can perform many services, such as clicking dialing, playing during a call, and so on.

However, there are corresponding deficiencies in implementing the click-to-call service by using the SIP-based third-party call control (3PCC) method, including: The control terminal has higher requirements, and the control terminal needs to have strong intelligence capability. In the implementation process of the 3PCC solution, the control terminal needs to be able to analyze the media capabilities of both parties of the call, and needs to operate on the media capabilities carried by the SDP, and establish a call by modifying the party SDP and media type rearrangement. In addition, if the parties on the call do not have the same codec or media stream, the control terminal needs to be able to recognize and end the call in time. Therefore, the control terminal needs to have strong intelligence capabilities.

There are many processes to be implemented, and the standards are not perfect, which is not conducive to promotion operations.

In J. Rosenberg, L Peterson, H. Schulzr inne, G. Camari llo, "Bes t Current Pract ices for Third Party Cal l Control (3pcc) in the Sess ion Ini t iat ion Protocol (SIP) " , RFC 3725 , Apri l 2004.—This paper introduces the four implementation processes of 3PCC. The implementation of the four processes is different, and each has its own advantages and disadvantages. Operators usually choose different processes according to their own needs to implement click-to-call services. Since different processes have different requirements for the terminal, different processes are required to use different terminals. As a result, there is no definite standard for the requirements of the terminal. In addition, in the specific implementation details, there are still some problems that cannot be unified.

It can be seen that the existence of the above two problems directly leads to the 3PCC implementation scheme being unfavorable for the promotion operation of the click-to-call service. Summary of the invention

The embodiment of the present invention is based on the SIP protocol, and proposes a method, a control terminal and a system for implementing a click-to-call service, so that the click-to-call service does not have special requirements for the terminal, and thus the click-to-call service is implemented. The implementation is relatively simple.

An embodiment of the present invention provides a method for implementing a click-to-call service, including: receiving, by a network side, a click-to-call request initiated by a control terminal to a network side, and determining a calling terminal and a called terminal corresponding to the click-to-call request;

The network side separately communicates with the calling terminal and the called terminal through a session initiation protocol SIP message Communication, establishing a connection between the calling terminal and the called terminal to implement a click-to-call service. An embodiment of the present invention provides a control terminal for a click-to-call service, including: a click-to-call service initiating device, configured to initiate a click-to-call request to a network side, requesting to establish a SIP-based session connection between the calling terminal and the called terminal.

An embodiment of the present invention provides a device for controlling a click-to-call service, where the device is disposed on a network side, and is configured to process a click-to-call service initiated by a control terminal that clicks on a call service, where the device includes:

a call number analysis device, configured to receive a click call request sent by the control terminal, and parse the number information of the calling terminal and the called terminal from the request;

a call establishing device, configured to perform, according to the call number parsing device, the number information of the calling terminal and the called terminal, and communicate with the calling terminal and the called terminal respectively according to the SIP protocol message, and establish a calling terminal and a called terminal. The connection between the two.

The embodiment of the present invention provides a system for implementing a click call, including a control terminal, a calling terminal, a called terminal, and a network side entity, where the control terminal is used to initiate a click to a network side entity that implements a click-to-call service. a call request; the network side entity communicates with the calling terminal and the called terminal respectively through a SIP message according to the click call request, and establishes a connection between the calling terminal and the called terminal.

It can be seen from the technical solutions provided by the present invention that the beneficial effects of the present invention include: The implementation of the service is not required by the server, and the capability of the SIP terminal is not required; thus, the control terminal does not need to know the media capabilities of the terminals of the two parties. It can have media capabilities or media capabilities. The control terminal uses the method in the standard SIP protocol to notify the service server of the information of both parties that need to establish a connection, and the service server establishes a connection between the calling party and the called party through a standard call flow.

The standard SIP protocol is adopted, which facilitates the rapid deployment and promotion of the click-to-dial service by the telecommunication operator; that is, the terminal implemented according to the standard SIP protocol can be used in the solution. This makes it easy to promote the click-to-call service, making it easy for telecom operators to quickly deploy click-to-call services. BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a flowchart of a specific implementation of a method for implementing a click-to-call service according to an embodiment of the present invention. 2 is a specific implementation signaling flow diagram for initiating a click call using the INFO method in the embodiment of the present invention.

FIG. 3 is a structural diagram of a specific implementation of an apparatus and system for implementing a click call according to an embodiment of the present invention. , the way of implementing the invention

The specific implementation manners of the present invention are further described below with reference to the accompanying drawings, but the corresponding specific implementations are not limited to the technical solutions provided by the present invention. In this embodiment, the request signaling used is INFO request signaling. Of course, the present invention is not limited to using only the INFO request signaling.

Referring to FIG. 1, Controller is a click call originator, a SIP terminal capable of transmitting an INFO request, referred to herein as a control terminal; Softswi tch is a softswitch device; AS is a click-to-call service server; MRS is a media resource server; And B is a normal SIP terminal.

Referring to FIG. 1 and FIG. 1, the specific process of implementing the click-to-call service provided by the present invention includes the following steps:

(1) The control terminal initiates INFO request signaling to the softswitch device, requesting the SIP terminal A and the SIP terminal B to establish a session;

In this case, the request address (Reques t-URI) in the INFO request signaling must be a special access code, that is, a click-to-call service access code; for example, in this embodiment, the access code may be : "s ip: 96066Qhuawei. com" ;

At the same time, the message body (BODY) in the INFO request signaling carries the number information of the calling party A and the called party B. In this embodiment, the specific may be:

<calleel>662000K/calleel>

</content>

The command-code is 1000, indicating that the INFO signaling is click-to-call request signaling, and calleel and callee2 are the numbers of the calling and calling parties, respectively;

(2) The softswitch device receives the INFO request signaling and determines the Request-URI in the INF0 request signaling, that is, "sip: 96066ahuawei.com" is the click-to-call service access code, then it will not do any processing. INF0 request signaling is transparently transmitted to the click-to-call service server AS;

(3), (4) Clicking the call service server AS receives the INF0 request signaling, and parses out the calling and called number information from the BODY part in the INF0 request signaling; referring to the previous example, the corresponding calling and called The number information is respectively calleel=6620001, callee2=6620002, and then sends a 200 OK response of the INF0 request to the control terminal;

(5), (6) The AS uses the INVITE method without SDP to call the calling terminal A, that is, initiates a call to the calling terminal A based on the SIP protocol;

(7), (8) The calling terminal A sends a 2000K message to the AS through the softswitch device, and carries its own session parameter SDP1 in the responding 2000K, where the call parameter SDP1 describes the media capability of the terminal of the calling terminal A, For example, the content of SDP1 is:

V=0

o=HuaweiSoftX3000 11150 11150 IN IP4 10.71.102.27

s=Sip Call

c=IN IP4 10.70.103.228

t=0 0

m=audio 10500 RTP/AVP 0 8 4 97

a=rtpmap: 0 PCMU/8000 a=rtpmap: 8 PCMA/8000

a=rtpmap: 4 G723/8000

m=video 10510 RTP/AVP 98 34

a=rtpmap: 98 MP4V-ES/90000

a=rtpmap: 34 H263/90000

a=fmtp: 34 QCIF=1 CIF=4 MaxBR=3840

a=fmtp: 98 prof ile-1 eve l-id=34

The above content indicates that the calling terminal A will receive media information on the machine with the IP address 10.71.102.27 and receive the audio information on the port 10500. The supported audio formats are: PCMU, PCMA, G.723; receiving video information on the 1051Q port The supported video formats are: H263 and MP4V-ES;

(9) - (12) The AS uses the session parameter SDP1 of the calling terminal A to call the MRS, and obtains the negotiation result SDP2 of the SDP1 and MRS session parameters, that is, the media form supported by the calling terminal A and the MRS, and its parameter format and SDP1 the same;

(13), (14) AS returns S to the AC message;

(15), (16) The AS sends an ACK message to the primary terminal A through the softswitch device, and carries the session parameter of the MRS and the result of the SDP1 negotiation in the ACK SDP2;

(17) The calling terminal A establishes a connection with the media resource server MRS, and the media resource server will play a prompt tone to the calling terminal A;

(18) ~ (21) The AS sends the INFO request signaling to the control terminal through the softswitch device, so as to notify the control terminal that the calling terminal A has picked up the call and the message body content of the INFO signaling is:

<command-code>100K/command -code>

<assignment-id>l</ assignment - id>

<result>Kresult> '

</content >

Wherein, the command-code is 1001, indicating that the INFO request signaling is a click call request. Status notification message; resul t is 1 means "successfully connected to the caller, calling the called party";

(22), (13) the AS calls the called terminal B through the softswitch device using the INVITE signaling without the SDP;

(24), (25) After receiving the INVITE signaling, the called terminal B picks up the response, returns a 200 OK message to the AS, and carries its own session parameter SDP3 in 2000K;

(26), (27) After receiving the 2000K response from the called terminal B, the AS initiates a relNVITE call to the calling terminal A, and carries the SDP3 in the relNVITE request;

(28), (29) The calling terminal A carries the SDP negotiation result SDP4 in 2000K returned to the AS;

(30). (31) After receiving the 2000K message carrying the SDP4, the AS returns an ACK message to the calling terminal A;

(32), (33) the AS also sends an ACK message to the called terminal B, and carries SDP4 in the ACK signaling to the called terminal B;

(34) At this point, the calling terminal A and the called terminal B start a call;

(35) ~ (38) The AS notifies the control terminal that the called terminal B picks up the call, and the call between the calling terminal A and the called terminal B has started;

(39) ~ (42) The AS sends a BYE request to the MRS to end the call connection between the satirical S and the calling terminal A.

When the service server receives the click-to-call request, the status and results of the processing are notified to the control terminal in real time through the INFO signaling for display to the controller. The business server returns multiple INFO signaling due to multiple states during processing. Since there are many states in the notification process, they are not listed in Figure 1. For simplicity, the steps (18) ~ (21) and (35) ~ (38) of Figure 1 respectively give two status notifications. For example, the following two states are respectively indicated: "Successfully connected to the calling party, calling the called party, ", "Call establishment, calling", and by returning these messages, the controller can fully understand the status and result of the entire click-to-call process. .

The implementation of the method of the present invention is not limited to the use of the SIP protocol INFO method, in compliance with the present invention Under the premise of implementing the click-to-call service method, the extension method of other SIP protocols can also be used to implement the click-to-call service.

As shown in FIG. 3, the present invention further provides a system for implementing a click call, including a control terminal (ie, a control terminal), a calling terminal, a called terminal, and a network side entity, where the network side entity is configured with The device provided by the invention for implementing a click-to-call service, wherein the network-side entity in the specific implementation process includes a softswitch device, a service server, and a media resource server, and the control terminal is provided with a click-to-call request device. The device for implementing the click-to-call service mainly includes a call number resolution device and a call setup device, and optionally includes a click call identification device, a call termination device, and a call state transfer device.

The specific implementation of each device involved in the system of the present invention will be described below: The click call requesting device is located at the control terminal, and is used to initiate an INFO request to the softswitch device, requesting A and B to establish a session, at this time, INFO The request address (Request-URI) in the request signaling must be a special access 4, that is, the click-to-call service access code. For example, in this embodiment: "s i : 96066S) hua ei. com";

At the same time, the message body (BODY) in the INFO request signaling carries the number information of the calling party A and the called party B. In this embodiment:

<command-code>1000</ command-code>

<cal lee2>6620002</cal lee2> ,

</content>

Wherein, the co leg and the code is 1000, indicating that the INFO message is click call request signaling, and cal leel and cal lee2 are the numbers of the calling party and the called, respectively;

The click call identification device is located in the softswitch device, and is configured to determine the Reques t-URI in the INF0 signaling after receiving the INF0 request, that is, "s ip: 96066Qhuawei. com" is the click-to-call service access. Code, then it will not do any processing, transparently transmit the INFO request to the click-to-call service server AS; the call number resolution device is located in the service server, and is used to parse the calling and called from the BODY part of the INFO request signaling. Number information, ie cal leel=6620001, cal lee2=6620002 _: then send a 2000K response of the INFO request to the control terminal;

The call setup device is located at the service server, and is configured to establish a connection between the calling terminal and the media resource server through a standard SIP-based call processing procedure, and also communicate with the calling terminal and the called terminal respectively according to the SIP protocol, and establish a calling terminal. The connection between the called terminal and the called terminal;

The call termination device is located at the service server, and is configured to send a termination call request to the media resource server, and end the connection between the media resource server and the calling terminal;

The call state transmitting device is located at the service server, and is configured to notify the control terminal of the call state of the calling terminal and the media resource server and the call state of the calling terminal and the called terminal by using INFO request signaling, for example, “successfully connect the calling party, Calling called ", "call setup, calling", etc. In this way, the controller that initiates the click-to-call service can know the status of both parties through the control terminal; that is, after the controller issues the click-to-call request, the service server will inform the status of the calling party and the call result during the entire session. Control terminal. The controller can understand the status and results of the call between the calling party and the called party, and take subsequent actions on the master and the called party according to these states and results, such as ending the call.

The above are only the preferred embodiments of the present invention, and those skilled in the art should be included in the scope of protection of the present invention within the scope of the technical solutions of the present invention. ,

Claims

Rights request

A method for implementing a click-to-call service, characterized in that it comprises:

The network side receives a click call request initiated by the control terminal to the network side, and determines the calling terminal and the called terminal corresponding to the click call request;

The network side communicates with the calling terminal and the called terminal respectively through the session initiation protocol SIP message, and establishes a connection between the calling terminal and the called terminal to implement a click-to-call service.

2. The method according to claim 1, wherein the method further comprises: the controlling terminal initiating a click call request to the network side by using an extended SIP message, wherein the extended SIP message carries a click call The industry axe access code and the number information of the calling terminal and the called terminal.

The method according to claim 1, wherein the processing performed by the network side comprises: transparently transmitting, by the softswitch device, a click call request initiated by the control terminal, and triggering the service server to establish a calling by using the SIP message. The connection between the terminal and the called terminal.

The method according to claim 3, wherein the click call request includes a click-to-call service access code and number information of the calling terminal and the called terminal, and after receiving the request, the softswitch device receives the request. The click-to-call service access code included in the request is identified, and the request is transparently transmitted to the service server.

5. The method according to claim 3, wherein the controlling the process of establishing a connection between the calling terminal and the called terminal comprises:

The service server parses out the number information of the calling terminal and the called terminal from the received click call request, and triggers establishment of a connection between the calling terminal and the media resource server based on the SIP message; the service server establishes the calling terminal and the quilt based on the SIP message. The connection of the terminal is called, and after the connection is established, the media resource server is notified to end its connection with the calling terminal.

The method according to any one of claims 1 to 5, wherein the click-to-call request is implemented by using INFO request signaling in a SIP protocol.

7. A control terminal for a click-to-call service, comprising: The click-to-call service initiating device is configured to initiate a click-to-call request to the network side, requesting to establish a SIP-based session connection between the calling terminal and the called terminal.

The control terminal according to claim 7, wherein the click call request is implemented by using INFO request signaling in a SIP protocol, and the request includes a click-to-call service access code and a calling terminal. And the number information of the called terminal.

9. A device for controlling a click-to-call service, the device being disposed on a network side, configured to process a click-to-call service initiated by a control terminal that clicks on a call service, wherein the device includes:

The device according to claim 9, wherein the device further comprises a click call identification device, configured to identify a click call service included in the click call request after receiving a click call request sent by the control terminal The access code is transmitted to the call number resolution device.

The device according to claim 9 or 10, wherein the device further comprises call termination means for transmitting a termination call request to the media resource server, ending the connection between the media resource server and the calling terminal.

The device according to claim 9 or 10, wherein the device is implemented based on a service server, and further comprises a call state transmitting device, configured to send the calling terminal and the media by request signaling The call state of the resource server and the call state of the calling terminal and the called terminal are notified to the control terminal.

A system for implementing a click call, comprising: a control terminal, a calling terminal, a called terminal, and a network side entity, wherein the control terminal is configured to implement a click call service The network side entity initiates a click call request; the network side entity communicates with the calling terminal and the called terminal respectively through a SIP message according to the click call request, and establishes a connection between the calling terminal and the called terminal.

The system according to claim 13, wherein the network side entity comprises a softswitch device and a service server, and

a softswitch device, configured to identify a click-to-call, a click-to-call service access code included in the request, and transparently transmit the received click-to-call request to the service server;

The service server establishes a connection between the calling terminal and the called terminal according to the click-to-call request transparently transmitted by the softswitch device.