METHOD AND SYSTEM FOR IMPLEMENTING FULL PROTECTION MODE

摘要

A method and system for implementing full protection mode are provided by the invention. When a master Optical Line Terminal (OLT) in a Passive Optical Network (PON) system detects that a master fiber or a branch fiber is disconnected, or a failure occurs on the master OLT, the master OLT notifies a slave Optical Network Unit (ONU) to perform switch. In this way, when a downlink communication can not be performed by a master link, the case is avoided that the master ONU can perform switch only depending on a line failure detected by itself, accordingly, the ONU switch time is shortened, the transmission in time for the time sensitivity service in the PON system is ensured, which enables the ONU and the OLT to implement quick communication resumption, the service quality of the PON system is improved.