APPARATUS AND METHOD FOR DETECTING TIMESLOT CONFLICT BETWEEN OPTICAL NETWORK UNITS IN OPTICAL COMMUNICATION NETWORK

摘要

DECLARATION I, NEHA SRIVASTAVA, do hereby certify to the best of my knowledge, information and belief that the annexed specification is a true and complete translation in English of the specification as filed in connection with the International application No. PCT/CN2007/002550 dated 23.8.2007. ABSTRACT The objective of the present invention is to provide a solution for detecting timeslot conflict between Optical Network Units (ONUs) in an Optical Line Terminal (OLT). When all ONUs are deactivated and there is still any light signal in the upstream, each ONU is notified to switch off the power supply of its transmitter one by one to detect whether there is any failure ONU; when all ONUs are deactivated and there is no light signal in the upstream, the failed ONU can be located through ranging the ONUs separately. The solution can be implemented through software update, without affecting the intrinsic hardware design. (Fig.2) v