Method and apparatus for implementing exception recovery when reelecting circuit

An abnormal recovery, circuit technology, applied in the field of communication network
CN101110695BInactive Publication Date: 2010-12-08HUAWEI TECH CO LTD
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Patents(China)
Current Assignee / Owner
HUAWEI TECH CO LTD
Publication Date
2010-12-08
Estimated Expiration
Not applicable ยท inactive patent

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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 abnormalityrecovery during circuit reselection. The present invention can automatically direct the occurrence of abnormal call loss, and avoid the existing of long abnormal call loss.
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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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