Table of Contents
1Scope
2References
3Definitions
4Abbreviations
5Protectioncharacteristics
5.1Monitoringmethodsandconditions
6Protectiongroupcommands
6.1End-to-endcommandsandstates
6.2Localcommands
7Protectionarchitectures
7.1Unidirectionalandbidirectionalswitching
7.2NeedforanAPS/PCCchannel
7.3Revertiveandnon-revertiveswitching
7.4Provisioningmismatches
8APSProtocol
8.1APSchannelformat
8.2TransmissionandacceptanceofAPSprotocol
8.3Requesttype
8.4Protectiontypes
8.5Requestedsignal
8.6Bridgedsignal
8.7Controlofbridge
8.8Controlofselector
8.9SignalFailoftheprotectionentity
8.10EqualPriorityRequests
8.11CommandAcceptanceandRetention
8.12Hold-offtimer
8.13Exerciseoperation
8.14APSchannelalarming
AppendixI-Examplesofoperation
I.11+1Unidirectionalswitching
I.21+1Bidirectionalswitching
I.31:nBidirectionalswitching
I.4Exercisecommandoperation Abstract
Defines the APS protocol and protection switching operation for the linear protection schemes for the Optical Transport Network at the Optical Channel Data Unit (ODUk) level.
