Method for implementing connection

Abstract

This invention provides a method for realizing hairpin link including: a first context adds the terminal point in a second context with the hairpin link relation into itself, then sets up a hairpin link relation in the first one, the second one copies the TDM end point, grouping end point and end point connection information of the second user to the first one, which cuts off the connection between its own first user TDM point and its grouping end point then cuts off the copied connection between the second user TDM end point and its grouping point, then the first one connects its TDM end point with the copied second user TDM end point to realize hairpin link. In this invention, hairpin link can be existed in the first and the second contexts, yet, if the MGC does not make a correct estimation, the MG can realize hairpin link itself.

Description

technical field [0001] The invention relates to gateway technology, in particular to a method for realizing hairpin connection on a media gateway. Background technique [0002] Media gateway (MG, Media Gateway) is the bearer plane device of the next generation network, generally deployed on the edge of IP network and time division multiplexing (TDM) network or synchronous transfer mode (ATM) network, and in the media gateway controller (MGC , under the control of the Media Gateway Controller), realize the forwarding function of the media flow between two different networks. [0003] When two users on the TDM side talk, if the MGC controls the MG to directly connect the two TDM users without codec conversion, such as: TDM-IP conversion, IP-TDM conversion, it is said that there is a hairpin connection relationship; otherwise , called a non-hairpin connection. [0004] Since the call process between two users needs to create a context in the MG, and record information about t...

AI Technical Summary

Problems solved by technology

[0008] In practical applications, due to the complexity of the services implemented by the MGC, it is impossible to accurately determine whether hairpin connections can be made in some cases.

For example: MGC may not be able to correctly determine whether a hairpin connection can be made when supplementary services, intelligent services, or nested and superimposed services

In this case, the MGC will control the MG to perform a non-hairpin connection, so that when a hairpin connection can be established, the MG does not perform a hairpin connection, resulting in voice quality degradation and waste of resources.

[0009] It can be seen that in the prior art, there is no method for the MG to perform the hairpin connection by itself when the MGC determines that the hairpin connection relationship is invalid.

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