Single-board backup method and device with line protection

A line protection and single board technology, applied in the field of communication, can solve problems such as the inability to back up single boards, and achieve the effects of automatic protection switching, single board protection, and protection
CN1599292AInactive Publication Date: 2005-03-23ZTE CORP
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
ZTE CORP
Publication Date
2005-03-23
Estimated Expiration
Not applicable ยท inactive patent

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Abstract

The invention discloses a method and device of monoboard backup with the line protection. The equipment includes main and spare monoboard the main board connected with work optical fibre and the spare board connected with protection optical fibre after touching off the switching; the active channel can be switched automatically to the redundant channel; the optical fiber link switch automatically at the same time. The main and spare equipment make the energy controller to connect with the currency backboard through the line; the synchronous clock is provided by the currency backboard. The touching off the switching includes the modes as follows: background sends the switching order; the downstage keystroke of replacement / switching spring; drawing board spring; the Watchdog overflow; The preparation board veneer detect the abnormity of the key veneer; the abnormity occurs to the key optical fiber link and the switching request of the preparation optical fiber link. The invention is applied to finishing the switch between the mainboard and the spare board as well as realizing the APS switching. During solving the APS switching, we set all the needed information interoperation between the mainboard and the preparing board.
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Description

technical field

[0001] The invention relates to the technical field of communication, in particular to a line protection for SDH (Synchronous Digital Optical Network) transmission and a backup method for related interface devices. Background technique

[0002] In the field of communication technology, the reliability of line transmission and communication devices has always been the focus of attention. In order to improve reliability, backup methods are generally adopted for lines and devices, that is, when a fault is detected in a working device or a line, Automatically switch to run on backup device / line.

[0003] In SDH transmission, there is a widely used line protection switching standard: automatic protection switching specification based on ITU-TG.841 suggestion. In the Chinese patent document "Automatic Protection Switching Method and Device on High-Rate SDH Ring" (patent application number: 99121279.7), an APS (AutoProtection Switch, automatic protection switching)...

Claims

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