1
Scope
2 References
3 Terms and definitions
4 Abbreviations
5 Transport functional architecture
of optical networks
5.1 General principles
5.2 Optical transport network layered
structure
5.3 Optical channel layer network
5.3.1 Optical channel trail termination
5.3.2 OCh transport entities
5.4 Optical multiplex section layer
network
5.4.1 Optical multiplex section trail termination
5.4.2 OMS transport entities
5.5 Optical transmission section layer
network
5.5.1 Optical transmission section trail
termination
5.5.2 OTS transport entities
5.6 Client/server associations
5.6.1 OCh/Client adaptation
5.6.2 OMS/OCh adaptation
5.6.3 OTS/OMS adaptation
5.7 Optical network topology
5.7.1 Unidirectional and bidirectional
connections and trails
5.7.2 Point-to-multipoint connections and trails
6 Optical network management
6.1 Generic requirements
6.1.1 Generic fault, configuration and performance management
6.1.2 Generic management communications
6.1.3 Generic client/server interaction management
6.2 Optical layer network management
requirements
6.2.1 Connection supervision
6.2.2 Signal quality supervision
6.2.3 Adaptation management
6.2.4 Protection control
6.2.5 Subnetwork/tandem/unusedconnection supervision
6.2.6 Management communications
6.3 Connection supervision techniques
6.3.1 Inherent monitoring
6.3.2 Non-intrusive monitoring
6.3.3 Intrusive monitoring
6.3.4 Sublayer monitoring
6.4 Connection supervision
applications
6.4.1 Monitoring of unused connections
6.4.2 Connection monitoring
7 Optical network survivability
techniques
7.1 Protection techniques
7.1.1 Trail protection
7.1.2 Subnetwork connection protection
7.1.3 Shared protection rings
7.2 Network protection applicability
in the optical transport network
7.3 Network restoration
8 Interconnection and interworking
between different administrative domains
9 Implementation aspects of the
optical channel
9.1 Introduction
9.2 Digital OTN layered structure
9.3 Optical channel layer network
(OCh)
9.4 Optical channel Transport Unit
(OTU) layer network
9.4.1 OTU trail termination
9.4.2 OTU transport entities
9.5 Optical channel Data Unit (ODU) layer network
9.5.1 ODU trail termination
9.5.2 ODU transport entities
9.6 ODU Time Division Multiplexing
9.7 Client/server associations
9.7.1
ODU/Client adaptation
9.7.2 ODUk/ODUj adaptation
9.7.3 OTU/ODU adaptation
9.7.4 OCh/OTU adaptation
9.8 Inverse multiplexing in the OTN
9.9 Transport of OTN elements over
non-OTN layer networks
9.10 Optical layer network management
requirements
9.11 Survivability techniques
9.12 Interconnection between different
domains
10 Subdividing of the optical transport network
10.1 Subdividing of domains
10.2 Subdividing of 3R spans
Annex A – Impairment
mitigation and regeneration
Appendix I – Examples
of optical network functionality
I.1 Wavelength conversion
I.2 Cross-connect
I.3 Regeneration
Appendix II –
Relationship between OTN and existing WDM networks
Appendix III –
Introduction of OTN-based transport networks
III.1 General
III.2 Types of client layer signals
III.2.1 OTN case
III.2.2 SDH case
III.3 Initial introduction of OTN-based
equipment
III.4 Interworking between SDH and
OTN-based transport networks
III.4.1 Interworking levels
III.4.2 OTN overlay
III.4.3 OTN XCs, ADMs, and line systems