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Method for synchronizing R2 signaling between MGW and MGC under H.248 architecture

A technology of call state and signaling, which is applied in the field of communication network, can solve problems such as circuit hanging, call state inconsistency, and failure to return to idle state, etc., to achieve the effect of increasing speed and improving equipment utilization

Inactive Publication Date: 2007-12-26
HUAWEI TECH CO LTD
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AI Technical Summary

Problems solved by technology

[0004] In the specific implementation, due to network packet loss or program abnormality, the call state of R2 on the MGC will be inconsistent with the call state of R2 on the MGW, resulting in MGW error processing, or directly rejecting related messages, resulting in call loss Increased, the circuit hangs, and the relay does not return to the idle state for a long time, etc.
There is another situation: if the MGC blocks the local circuit (near-end block) and then suddenly resets, when the MGC restarts, it does not know that the block command has been issued, thinking that the line is idle, and the result is that the block circuit is always unavailable. Corresponding calls are made, resulting in fewer available circuits

Method used

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  • Method for synchronizing R2 signaling between MGW and MGC under H.248 architecture

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Embodiment Construction

[0024] Referring to Figure 1, as shown in the figure, the circle in the figure indicates the status. The following describes how to implement call state synchronization.

[0025] 1. For the treatment of occlusion:

[0026] Near-end block: If the block message is sent inbound, the operation is near-end block.

[0027] Remote blocking: If a blocking message is detected in an outgoing call, it is a remote blocking.

[0028] Non-proximal occlusion: not in the state of proximal occlusion.

[0029] Non-distal occlusion: not in the state of distal occlusion.

[0030] The outgoing and incoming types of the trunk can be arbitrary, and the outbound can also be blocked.

[0031] a) MGC near-end block a, MGW non-near-end block A1, if MGW reports occupancy event a) 1Notify (the premise is that MGW detects corresponding event), then MGC sends block signal to MGW a) 2Block blocks MGW again, MGW Being in proximal occlusion A2 is synchronized with MGC proximal occlusion a state.

[0032]...

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Abstract

The method comprises: by defining the blocking event and deblocking event as a permanence event on MGW, using the expanded empty signal to send down the deblocking after resetting the MGC blocking, and reporting pseudo blocking, the status of MGW and MGC is synchronized.

Description

technical field [0001] The invention relates to communication network technology, in particular to a method for R2 signaling to synchronize call states between MGW (media gateway) and MGC (media gateway controller) under H.248 framework. Background technique [0002] H.248 is an interface protocol between the MGC and the MGW under the bearer control separation architecture. All kinds of signaling used in traditional switches need a solution under the separation architecture. R2 signaling is used as channel-associated signaling between switches commonly used in traditional switches and PBX (Private Branch exchange, private branch exchange). How to implement it under the separation architecture has been defined in some specifications (refer to H.248.28). [0003] R2 signaling is a channel-associated signaling, which is divided into two parts: line signaling and register signaling. The line signaling uses the abcd bits of the TS16 time slot for call control, and its control s...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56H04L29/06H04L12/66H04B1/74H04B7/26H04L7/00
Inventor 李琥
Owner HUAWEI TECH CO LTD
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