Single-board backup method and device with line protection

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.

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)...

AI Technical Summary

Problems solved by technology

In addition, APS switching is performed on the same motherboard, that is, both the working path and the protection path are on the same single board, that is to say, the single board cannot be backed up at the same time when line protection is realized.

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