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Method for transmitting post address message and set-up calling

An address and calling party technology, applied in the field of communication, can solve the problems of not being able to carry ToTag, not carrying ToTag, and being unable to establish a call

Active Publication Date: 2009-05-27
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is to say, if the called address information in the IAM carried in the INVITE request message is incomplete, and the 100 message of the peer office does not carry ToTag or cannot carry ToTag to establish a dialogue, then the existing mechanism cannot solve this problem, so There is also no way to establish a call between two parties

Method used

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  • Method for transmitting post address message and set-up calling
  • Method for transmitting post address message and set-up calling

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Embodiment Construction

[0030] In order to make the features and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with specific embodiments with reference to the accompanying drawings.

[0031] From the current point of view, in the process of establishing a call between the two parties, there is a situation where the called address information in the IAM carried in the INVITE request message is incomplete. Messages, such as INFO messages and NOTIFY messages, carry subsequent address information (SAM, Subsequent Address Message) to supplement incomplete called address information. However, according to SIP-T, the called address information in the IAM carried in the INVITE request message sent by the calling party to the called party is incomplete, and the 100 message sent by the called party to the calling party does not or cannot carry ToTag In the case of , the conversation cannot be established because the called party cann...

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Abstract

A method for transmitting the Subsequent Address Message includes: when Called Address Message received by the called party is not complete, the called party transmits initiatively to the calling party the temporary response message which carries the necessary information for establishing the dialogue, and after the dialogue is established, the calling party transmits the Subsequent Address Message to the called party. Another method is used for establishing a call. With the methods, when the Subsequent Address Message can't be transmitted in the case that the called Address Message is not complete and the dialogue can't be established, that the dialogue is established early enables the calling party to transmit the Subsequent Address Message after the dialogue is established, thereby the call is established normally.

Description

technical field [0001] The invention relates to the communication field, in particular to a method for transmitting subsequent address information (SubsequentAddress Message) and establishing a call. Background technique [0002] Integrated Services Digital Network (ISDN, Integrated Services Digital Network) User Part (ISUP, ISDN User Part) is a very widely used protocol at present, and it is also a very mature protocol. It is mainly used in ISDN networks to specify telephone or non-phone Signaling functions and procedures required to switch services. Session Initiation Protocol (SIP, Session Initiation Protocol) is a relatively new protocol, mainly used in IP networks. In SIP, dialogue (Dialog) is a very important concept, usually composed of three elements CALLID, FromTag and ToTag, which are a series of randomly generated numbers, where CALLID and FromTag are used to represent the party that initiated the call request Information, ToTag is used to indicate the informati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04Q3/00H04Q11/04H04M3/00
CPCH04L29/06326H04L29/06027H04L65/1069
Inventor 陈海永
Owner HUAWEI TECH CO LTD
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