Method for implementing reanswer call

Abstract

The invention discloses a re-answer call realizing method, comprising the steps that: S402, a calling user located by a mobile terminal calls a called user located by a fixed terminal and carries out the conversation, a media gateway control device issues the detection events of re-answer signal to a media processing device; S404, when a fixed network located by the fixed terminal detects the hanging up of the called user, a message of hanging up of the called user is sent to the media processing device, and the media processing device sends the message of hanging up of the called user to the media gateway control device; S406, the media gateway control device does not immediately release the call after receiving the message of hanging up of the called user and starts the time-delay detection process to wait for the hanging up of the calling user, when a re-answer message which is reported form the media processing device is received during the time-delay detection period, the time-delay detection process is cancelled and the conversation between the calling user and the called user is carried out. The re-answer call realizing method can realize the re-answer call aiming at the situation that a TDM chain is adopted between a fixed network and the NGN media processing device and channel associated signaling protocols are used for carrying out the voice call.

Description

technical field [0001] The present invention relates to the field of communication, and more specifically relates to a method for implementing call re-answering. Background technique [0002] The media gateway control protocol H.248 is one of the interface protocols in the next generation network (NGN). It is applied to the control interface generated after the separation of media processing and signaling control in the next generation network. gateway controller / soft switch device) and the corresponding media processing device (gateway / media server / IP intelligent terminal, etc.), such as between the media gateway controller (MGC) and the media gateway (MGW). an agreement. [0003] The re-answer call is mainly used in the fixed telephone network (such as the public switched telephone network PSTN, hereinafter referred to as the fixed network). technology, processes such as figure 1 Shown: [0004] S102, after a series of calls, the calling and called users are in a talki...

AI Technical Summary

Problems solved by technology

In the prior art under this networking mode, there is no solution that can transfer information related to re-answering calls between the media gateway control device and the media processing device. Therefore, when an NGN mobile user calls a fixed network user , fixed network users cannot use their original re-answer function (if there is one)

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