AUTOMATIC PROTECTION SWITCHING IMPLEMENTATION METHOD, SYSTEM AND BOARD EQUIPMENT FOR MAIN AND STANDBY BOARDS

摘要

An automatic protection switching implementation method for main and standby boards involves: detecting the synchronous digital hierarchy SDH data of the main service, and the SDH data are received from a working line by a working port of the main board; if the SDH data received by the working port are detected to be abnormal, the SDH data of the main service received by the standby board are selected, and the SDH data are received from a protecting line by a protecting port of the standby board, and relative service processing is performed. Only the switching of the ports is needed while the switching of the services isn't needed, so the automatic protection switching implementation method for the main and standby boards improves the speed of the automatic protection switching between the main and standby boards.