Table of Contents
1Scope
2References
3Termsanddefinitions
4Abbreviations
5Recoverymechanismsforinternationalmultiplexsections
5.1Multiplexsectionprotection
5.1.1AutomaticswitchingtoalternativeMS
5.1.2ForcedswitchingtoalternativeMS
5.1.3Switchingtime(automaticswitching)
5.1.4Criteriaforautomaticreturntonormalin
thecaseofautomaticprotection(revertive)
5.2Multiplexsectionrestoration
6Recoverymechanismsforinternationalconnectionsinthe
SDHVCtraillayer
6.1Subnetworkconnectionrecoverymechanisms
6.1.1Automaticprotectionforsubnetworkconnections
6.1.2Manualprotectionforsubnetworkconnections
6.1.3Subnetworkconnectionrecoverytimes
6.2VCtrailrecoverymechanisms
6.2.1VCtrailprotection
6.2.2VCtrailrestoration
6.2.3VCtrailrecoverytimes
6.3VCtrailrestorationduringmaintenanceactivities
6.4VCtrailrestorationexercises
6.5Highpriorityandpre-emptibleVCtrails
AppendixI-Bibliography
AppendixII-ManualrestorationusingDigital
Cross-ConnectEquipment Abstract
Defines maintenance thresholds and procedures for recovery mechanisms of international SDH VC trails (paths), multiplex sections (MSs) and subnetwork connections (SNCs), in case of failure, degradation, maintenance activities (e.g. planned outages).
