Patent ID: 9497019
Filing Date: 2016-11-15
CPC Classification: H04J,H04L,H04Q

Claim Text:
1. A method for an Optical Network Unit (ONU) in a Passive Optical Network (PON) of managing a time-of-day synchronization with at least two reference clocks, wherein the ONU is connected to an Optical Line Termination (OLT) over an Optical Distribution Network (ODN) and to at least two client equipment, the method comprising: receiving one or more Optical Network Terminal (ONT) Management and Control Interface (OMCI) messages from the OLT, said one or more OMCI messages transporting time-of-day information from the at least two reference clocks over the ODN, wherein each of the at least two reference clocks is associated with at least one of said at least two client equipment; creating at least two individual time-of-day messages, each message being based on time-of-day information from a corresponding one of said at least two reference clocks; and sending each of the at least two individual time-of-day messages to the at least one of said at least two client equipment associated with the corresponding one of the at least two reference clocks, for synchronizing each of the at least two client equipment with its associated reference clock.