Patent ID: 8983288
Filing Date: 2015-03-17
Classification: H04J,H04L

Abstract:
1. A method, comprising: a second location receiving a first time stamp associated with a first location, wherein the first time stamp was inserted into one of a frame alignment overhead portion, an optical channel transporting unit overhead portion, an optical channel data unit overhead portion, and an optical channel payload unit overhead portion of a first overhead of a first optical transport unit frame based on at least a characteristic of the first time stamp, wherein the characteristic of the first time stamp is at least one of a size of the first time stamp, an amount of the first time stamp and a type of the first time stamp; extracting information of the first time stamp from the first overhead of the first optical transport unit frame; generating a second time stamp based at least in part on the extracted information of the first time stamp associated with the first location, wherein the second time stamp includes at least part of the extracted information of the first time stamp; and transmitting the second time stamp in a second overhead of a second optical transport unit frame to the first location wherein the second time stamp is used to measure a round trip delay of a network.