Method for negotiating media different capability

Abstract

The invention relates to a method for method for cooperating different abilities, wherein it comprises that: calling or called network gate divides the conserved resource via media abilities into resource groups; said group has several source small groups with different media abilities; in the cooperation, the network gates consult the group division; each group only reports one resource as the consulted result. Since the invention uses expand H248 protocol or expand SDP protocol, and it divides resource into groups, the invention can hole several abilities, save network resource and improve network function.

Description

A Method for Media to Negotiate Different Types of Capabilities technical field The invention relates to a media negotiation method in network technology, in particular to a method for media negotiation of multiple different types of capabilities. Background technique NGN (NextGenerationNetwork, next-generation network, hereinafter referred to as NGN) is a milestone in the history of telecommunications, marking the arrival of a new generation of telecommunications network era. From the perspective of development, NGN is gradually moving from the traditional PSTN network based on circuit switching to mainly based on packet switching. It bears all the services of the original PSTN (Public Switched Telephone Network) network, and will The data transmission is offloaded to the IP network to reduce the heavy load of the PSTN network, and many new and old services are added and enhanced with the new features of IP technology. In this sense, NGN is the product of the integration...

AI Technical Summary

Problems solved by technology

Now it is necessary to negotiate a voice codec and a T38 codec for automatic switching between voice and fax. It is necessary to select the only T38 fax capability in group 2 and group 3, and to select the only voice capability in group 1, but now Technical reserved groups and reserved value setting methods cannot meet this requirement in any case, so it is impossible to negotiate the only T38 capability and return the voice capability and fax capability at the same time, such as the realization of automatic switching; Multiple capabilities use priority, but the ability to reserve a lower priority will occupy a large amount of network resources

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