Method and device for establishing SIP (Session Initiation Protocol) session

A session establishment request and application server technology, applied in the communication field, can solve the problems that FTP cannot be satisfied, calls cannot be established, and user needs can only be partially met, so as to achieve the effect of improving success rate and multi-flexibility

Inactive Publication Date: 2016-06-08
ALCATEL LUCENT SAS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the disadvantage of this method is: when each called terminal cannot meet the media type specified by the calling terminal, even if the media types of all called terminals together can meet the calling terminal, but because the calling terminal requires When all the specified media types are satisfied, the call cannot be established
For example, in the above example, if the media type specified by the SDP in the SIP call request initiated by the calling terminal A1 is audio and FTP, and the called terminal B1 answers first, the

Method used

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  • Method and device for establishing SIP (Session Initiation Protocol) session
  • Method and device for establishing SIP (Session Initiation Protocol) session
  • Method and device for establishing SIP (Session Initiation Protocol) session

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Embodiment Construction

[0035] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0036] figure 1 An application scenario diagram according to an embodiment of the present invention is shown. Among them, user A has one SIP terminal: terminal A01, and user B has three SIP terminals: terminal B01, terminal B02 and terminal B03. The types of SIP terminals shown in the figure are only exemplary, including but not limited to desktop computers, notebook computers, mobile phones, and tablet computers. The terminal A01 is connected to the terminal B01 , the terminal B01 , the terminal B02 and the terminal B03 through the core network 103 . A CSCF (CallSessionControlFunction, call session control function) 101 and an application server 102 are located in the core network 103 . It should be noted, figure 1 Only network elements and connections related to the present invention are shown, and those skilled in the art should understand that in orde...

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PUM

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Abstract

The invention aims to provide a method and a device for establishing an SIP (Session Initiation Protocol) session; the method comprises the following steps: after an application server receives a session establishment request from CSCF (Call Session Control Function), sending the session establishment request to the CSCF, wherein an unsatisfied caller media type set and a replied called terminal set are included; when receiving a reply message from the CSCF, updating the unsatisfied caller media type set and the replied called terminal set; and repeating above process till the unsatisfied caller media type set is empty or the application server receives an indication message from the CSCF, wherein the indication message is used for indicating that all called terminals are replied. By adopting the method and the device disclosed by the invention, one SIP terminal can establish the SIP session with multiple SIP terminals, so that the success rate of establishing the SIP session is improved; and meanwhile, the media type of the SIP session can be increased, and the user experience is obviously improved.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a technology for establishing a SIP session. Background technique [0002] A SIP (Session Initial Protocol, Session Initiation Protocol) message is a signaling message used to establish an end-to-end session (Session). Usually, SDP (SessionDescriptionProtocol, Session Description Protocol) information is encapsulated in the message body part of the SIP message. These SDP information indicate the media type supported by one end of the session. These media types include but are not limited to audio, video, message, FTP, etc. (FileTransferProtocol, file transfer protocol), etc. Since the SIP message is an end-to-end session message, the current SIP session can only be established between one terminal and another terminal, but not between one terminal and multiple terminals. Moreover, the media type specified in SDP It is for a certain terminal. [0003] With the rapid devel...

Claims

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Application Information

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IPC IPC(8): H04L29/06
Inventor 聂非孟玲玲
Owner ALCATEL LUCENT SAS
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