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Method and apparatus for implementing exception recovery when reelecting circuit

An abnormal recovery and circuit technology, applied in the field of communication network, can solve the problem that abnormal call loss cannot be eliminated by itself, and achieve the effect of avoiding long-term and abnormal call loss

Inactive Publication Date: 2008-01-23
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The technical problem to be solved by the present invention is to solve the problem that the abnormal call loss caused by PRA circuit reselection cannot be eliminated by itself, and to provide a Method and device for realizing abnormal recovery

Method used

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  • Method and apparatus for implementing exception recovery when reelecting circuit
  • Method and apparatus for implementing exception recovery when reelecting circuit
  • Method and apparatus for implementing exception recovery when reelecting circuit

Examples

Experimental program
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Effect test

no. 2 example

[0057] First, the PRA trunk records the number of times of circuit reselection and the number of times that the connection fails after the circuit reselection.

[0058] When the total number of circuit reselection failures is too many (or the probability of circuit reselection failure is relatively high) exceeds a predetermined threshold, the circuit recovery process is started. At this time, instead of using the RESTART message, the call is directly prohibited for a period of time (for example, the call on a certain PRA link is prohibited for a period of time, etc.), or the call volume is reduced (for example, the call speed on a certain PRA link is limited for a period of time, etc. ). In order to reduce the probability of large-scale call loss.

no. 3 example

[0060] First, the PRA trunk records the number of times of circuit reselection and the number of times that the connection fails after the circuit reselection.

[0061] When the total number of circuit reselection failures is too many (or the probability of circuit reselection failure is relatively high) exceeds a predetermined threshold, the circuit recovery process is started. At this time, instead of using the RESTART message, use the SERVICE / SERVICE_ACK message specified in the ANSI-Q.931 standard to synchronize the circuits of the two offices. This requires PRA trunk outbound and PRA trunk inbound to support the ANSI-Q.931 standard.

no. 4 example

[0063] First, the PRA trunk records the number of times of circuit reselection and the number of times that the connection fails after the circuit reselection.

[0064] When the total number of circuit reselection failures is too many (or the probability of circuit reselection failure is relatively high) exceeds a predetermined threshold, the circuit recovery process is started. At this time, instead of using the RESTART message, the inbound side is prohibited from performing circuit reselection for a period of time.

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Abstract

The present invention discloses a method for realizing abnormality recovery during circuit reselection. The present invention comprises (a) when the communication authority receives information form a partner communication authority, the information carries a circuit mark; (b) when the circuit mark chosen by the partner communication authority is detected unavailable in the communication authority, the circuit reselection is performed, and circuit reselection times or the connection failure times returned by the partner communication authority after the circuit reselection can be recorded; (c) when the recorded times exceed the preset threshold value, circuit recovery flow is started, to perform abnormality treatment. The present invention also discloses a device for realizing abnormality recovery during circuit reselection. The present invention can automatically direct the occurrence of abnormal call loss, and avoid the existing of long abnormal call loss.

Description

technical field [0001] The invention relates to the field of communication networks, in particular to a method and device for realizing abnormal recovery during circuit reselection. Background technique [0002] Primary Rate Access (PRA) is a communication capability provided by ISDN, which can provide users with dial-up connections of various computer networks and various communication channels. However, since the PRA trunk does not have an inter-office circuit synchronization mechanism similar to the ISUP trunk (such as continuity check, inter-office circuit maintenance messages, etc.), the two offices interconnected using the PRA trunk cannot know the current circuit status of the other party. When a call occurs, the circuit status of the two offices may be inconsistent. If the outgoing side selects a circuit that cannot be used by the incoming side, it will cause a circuit reselection on the incoming side. [0003] In actual situations (especially in the case of using ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/24H04L12/56H04L29/06H04L45/28
Inventor 蒋忠林
Owner HUAWEI TECH CO LTD
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