Patent ID: 7403490
Filing Date: 2008-07-22
Classification: H04L,H04Q

Abstract:
1. A method for discovering by an OLT (Optical Line Termination) OAM (Operations, Administration & Maintenance) capabilities of multiple ONUs (Optical Network Units) connected to the OLT in an Ethernet passive optical network, the method comprising the steps of: assigning OLT identifications for identifying each of the ONUs according to registration requests from the ONUs connected to the OLT, and starting by the OLT an OAM capability discovery operation for the OAM capabilities of the ONUs by transmitting first OAM capability information messages, which requests OAM capabilities of the ONUs, respectively; and receiving by the OLT second OAM capability information messages that include OAM capabilities of the respective ONUs, said second OAM capability messages being sent by the respective ONUs in response to a request for OAM capabilities from the OLT in the first OAM capability information message; wherein the OAM capability information message includes a field for representing an operation state of the OAM capability information message.