Patent ID: 8958701
Filing Date: 2015-02-17
Classification: H04B,H04J,H04Q

Abstract:
1. A method of tunneling in an Optical Transport Network (OTN), comprising: receiving a working signal and a protection signal, wherein the working signal has a working payload and working overhead bytes with working Automatic Protection Switching (APS) switching coordination bytes, the protection signal has a protection payload and protection overhead bytes with protection APS switching coordination bytes, and the working signal or the protection signal is designated as an active signal with an active payload and active overhead bytes; generating an Optical channel Data Unit (ODU) signal with an ODU signal payload and an overhead segment, wherein the ODU signal payload is the active payload, and the overhead segment has portions of the working overhead bytes and the protection overhead bytes including the working APS switching coordination bytes and the protection APS switching coordination bytes; transmitting the ODU signal into an Optical Transport Network (OTN) network, wherein the ODU signal is a single signal transported over the OTN network; receiving the ODU signal from the OTN network; recreating the working signal based on the active payload in the ODU signal payload and the working overhead bytes in the overhead segment; recreating the protection signal based on the active payload in the ODU signal payload and the protection overhead bytes in the overhead segment; and transmitting the recreated working signal and the recreated protection signal.