Table of Contents - G.7703 (2021) Amd. 2 (08/2024) -

1	Scope
2	References
3	Definitions
	3.1	Terms defined elsewhere
	3.2	Terms defined in this Recommendation
4	Abbreviations and acronyms
5	Conventions
6	Overview
	6.1	Control component overview
	6.2	Call and connection control
	6.3	Interaction between control domains, transport resources and other MC systems
	6.4	User architecture
7	Transport resources and their representation
	7.1	Transport functional architecture
	7.2	Domains
	7.3	Control view of transport resources for connection management
	7.4	Virtualization
	7.5	Multilayer aspects
	7.6	Interlayer client support
	7.7	Calls supported by calls at same layer
	7.8	Mapped server interlayer relationships
8	Control components
	8.1	Notation
	8.2	Policy and federations
	8.3	Architectural components
9	Common control communications
	9.1	Control communications network
10	Common management aspects of common control components
11	Identifiers
	11.1	Resources in the transport network
	11.2	Control view of transport resources
	11.3	Control Components
	11.4	Control artefacts
	11.5	Reference points
	Page
12	Resilience
	12.1	Principles of MC component and transport network interaction
	12.2	Principles of protocol controller communication
13	Connection availability enhancement techniques
	13.1	Protection
	13.2	Restoration
	13.3	Nested routing domains
14	Topology and discovery
Annex A – Connection services
Appendix I – Resilience relationships
	I.1	ASON control domain – DCN relationships
	I.2	ASON control domain – Transport resource relationships
	I.3	Control domain – MC system relationships
	I.4	Intra-control domain relationships
Appendix II – Example of layered call control
Appendix III – Component interactions for connection set-up
	III.1	Hierarchical routing
	III.2	Source and step-by-step routing
	III.3	Connection protection
	III.4	Restoration – Hard re-routing – Intra-domain – Hierarchical method
	III.5	Restoration – Soft re-routing – Intra-domain – Source method
	III.6	Restoration – Revertive re-routing – Intra-domain – Source method
	III.7	Source routing using a routing query interface