Method for realizing protocol playback controlled by media gateway

Abstract

A method for implementing the playback of the media gateway control protocol, improving the signaling efficiency and the playback effect when it realizes the conference playback. Comprises: a soft switch down-transmits a signal to demand to play back to all terminals in the context, when the media gateway receives the signal, adds an exclusive terminal in the context that is needed to play back, and plays back to all the terminal in the context via the exclusive terminal. If the context demanded to play back is not a conference context, request a conference bridge resource after receiving the signal. When needed to stop playing back, the soft switch will down-transmit a null signal in which the terminal id represents all the terminals, and at this time the media gateway will stop playing back and delete the exclusive terminal used specially for playback. The soft switch may demand to play back to the object context, and the media gateway may play back to all the terminals in the context in matter of multicast, and / or multi-unicast, and / or signal tone sharing. When needed to stop playing back, down-transmit the null signal to the object context.

Description

Technical field [0001] The present invention relates to a control technology for a media gateway, in particular to a technology for realizing multi-party communication through a media gateway control protocol. Background technique [0002] In the communications field, traditional voice services are usually provided by the Public Switched Telephone Network (PSTN). PSTN is a circuit-switched network, which brings many inconveniences to data users, such as high communication prices and slow Internet access , Long waiting time, low transmission quality, difficulty in adding new services, etc. With the development of communication technology and the rapid growth of data services, it is gradually becoming possible to carry voice and data services together on a single data network. [0003] The Next Generation Network ("NGN") was proposed under this situation, and has been developed rapidly in recent years. NGN can carry the services in the PSTN and at the same time offload a large amou...

AI Technical Summary

Problems solved by technology

[0013] In practical application, the above-mentioned solution has the following problems: the signaling efficiency of the existing technical solution 1 is not high, and the operation is complicated. For the second bearer model of MPTY, it is impossible to implement the conference announcement and the single-party announcement without interfering with each other concurrently. ;

[0014] In the existing technical scheme 2, when the Termination sent a signal is deleted or moved, it will affect the playback of the conference. The usage scenarios are limited, and there are also restrictions on the types of playback, and all types of playback cannot be realized.

[0015] The main reason for this situation is that the existing technical solution 1 needs to send signals to all the terminations in the Context one by one, and needs to send a lot of signaling, and the signaling efficiency is not high, especially when the Context contains many terminations , the signaling efficiency is lower; when a new user joins the conference, the prior art solution 1 needs to issue an audio signal to the user in order to make the user hear the ongoing audio playback in the conference, and the operation is complicated; and for the user, only corresponding In the case of a Termination, that is, the second bearer model of MPTY, the existing technical solution 1 cannot realize the independent control when the conference announcement and the single-party announcement are concurrently carried out (for example, the conference announcement and the single-party announcement are performed at the same time, and then the conference is stopped play, while the unilateral playback continues); when the user in the conference switches, a new Termination will be generated, if the user is playing the announcement tone (announcement) of the non-single-frequency signal before switching, in order to ensure the switching The new Termination after the switch can also hear this announcement. For the second bearer model of MPTY in the existing technical solution 1, it is necessary to re-release the announcement signal on the new Termination after switching, because the notification tone has a clear start The sign will cause the user to start listening to the audio from the beginning again, and the user can obviously feel the discontinuity of the playback, for example, the prompt "The number you dialed does not exist, please check and dial again" will be played. If the word "No" is placed, it will switch , the voice actually heard by the user may be "the number you dialed is not...the number you dialed does not exist, please check and dial again", the playback effect is not ideal

[0016] For the existing technical solution 2, if the Termination, which is issued a signal for playback, is deleted or removed from the conference context, the conference playback of other conference parties will be automatically terminated, so the existing technical solution 2 needs to be selected. The signaled termination is always kept in the conference context, which limits the usage scenarios of this solution; and the existing technical solution 2 can only play the sound that can specify the direction of the sound signal, and currently only the notification defined by H.248.7 Signals defined by some packages such as the Generic announcement package have direction parameters (internal, external or bidirectional), so the types of announcements are very limited, and all types of announcements cannot be realized

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