Table of Contents
1Scope
2References
3Termsanddefinitions
4Abbreviations
5ApplicationoftheG.805layeringconcept
5.1Multiplexingofmultipleclients
5.2SupportofATMoverSDH
5.3Concatenation
5.3.1Contiguousconcatenation
5.3.2Virtualconcatenation
5.3.3Interworkingbetweencontiguousandvirtual
concatenation
6Connectionsupervision
6.1Inherentmonitoring
6.2Non-intrusivemonitoring
6.3Sublayermonitoring
7SDHtransportnetworkavailabilityenhancementtechniques
7.1SDHmultiplexsectionprotection
7.1.1SDHmultiplexsection1+1protection
7.1.2SDHmultiplexsection1:Nprotection
7.1.3SDHmultiplexsectionsharedprotection
rings
7.1.4SDHmultiplexsectiondedicatedrings
7.2SDHsubnetworkconnectionprotectionexamples
8Architectureofsynchronizationnetworks
8.1Introduction
8.2Synchronizationnetworkaspects
8.2.1Synchronizationmethods
8.2.2Synchronizationnetworkarchitecture
8.2.3Synchronizationmodes
8.2.4Synchronizationnetworkreferencechain
8.2.5Synchronizationstrategy
8.2.6Synchronizationnetworkevolution
8.2.7Synchronizationnetworkrobustness
8.3Payloadjitterandwander
8.3.1SDHnetworkmodelforpointeractivity
simulation
8.3.2JitterataSDH/PDHboundary
8.4PDH/SDHinterworkingimplications
9Selectionofaprimaryratemapping
AppendixI-ClientserverassociationsofSDHlayernetworks
AppendixII-IntroductionofSDH-basedtransportnetworks
II.1General
II.2Typesofclientlayersignals
II.2.1SDHcase
II.2.2PDHcase
II.3InitialintroductionofSDH-basedequipment
II.4InterworkingbetweenPDHandSDH-basedtransport
networks
II.4.1Interworkinglevels
II.4.2SDHoverlay
II.4.3SDHDXC/ADMs
II.4.4SDHlinesystems
II.5IntroductionofSTM-Ninterfaceson64kbit/s
switches(andDXCs)
AppendixIII-Guidelinesforsynchronizationnetwork
engineering
III.1Introduction
III.2Purposeofthesynchronizationnetwork
III.3Requirementsforsynchronizationnetworks
III.4Analysisofsynchronizationnetworks
III.5PRC-Leveloptions
III.6SSU-Levelsolutions
III.6.1Checkingreferenceprovisioningsatthe
SSU-Level
III.6.2Absolutefrequencyoffsetguarding
III.7SEC-Levelsolutions
III.7.1ApplicationoftheSSMprotocolinthe
SSU-Level
III.7.2ExamplesofSECsubnetworkswithSSM
parameters
III.8Synthesisofthesynchronizationnetwork
III.9DefinitionsusedinAppendixIII Abstract
Describes the functional architecture of transport networks including network synchronization principles for networks that are based on the SDH. It uses the architectural description defined in ITU-T Recommendation G.805, the generic functional architecture of transport networks.
