Recommendation ITU-T G.7701 (04/2022) Common control aspects
Summary
History
FOREWORD
Table of Contents
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 Call and connection control
          6.1.1 Call control
          6.1.2 Call admission control
          6.1.3 Connection control
          6.1.4 Connection admission control
          6.1.5 Relationship between call state and connection state
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 Multi-layer aspects
          7.5.1 Representation as SNP link connections
          7.5.2 Representation as a set of SNPP links and subnetworks
          7.5.3 Multi-layer routing topology
     7.6 Interlayer client support
     7.7 Calls supported by calls at same layer
     7.8 Mapped server interlayer relationships
          7.8.1 1:1 relationship
          7.8.2 1:n relationship
          7.8.3 n:1 relationship
8 MC component approach
     8.1 Notation
     8.2 Policy
     8.3 Common MC components
          8.3.1 Call controller components
               8.3.1.1 Calling/called party call controller
               8.3.1.2 Network call controller
          8.3.2 Connection controller component
          8.3.3 Routing controller component
          8.3.4 Link resource manager component
          8.3.5 Discovery agent component
          8.3.6 TAP component
               8.3.6.1 Termination and adaptation performers
               8.3.6.2 TAP resource model
               8.3.6.3 TAP states
               8.3.6.4 Adding/removing resources from a control function
               8.3.6.5 SNPx binding state transitions per LRM
               8.3.6.6 TAP component interfaces
          8.3.7 Directory service component
          8.3.8 Notification component
               8.3.8.1 Alarm notification
               8.3.8.2 Notification subscription
          8.3.9 Protocol controller (PC) component
          8.3.10 Traffic policing (TP) component
9 Common control communications
10 Common management aspects of MC components
     10.1 MC components
     10.2 Control function management requirements
11 Identifiers
     11.1 Resources in the transport network
     11.2 Control view of transport resources
          11.2.1 Name spaces for routing and connection control
          11.2.2 Name space recursion
     11.3 MC components
     11.4 Control artefacts
     11.5 Reference points
     11.6 Control communications network
12 Resilience
     12.1 Principles of MC component and transport network interactions
     12.2 Principles of protocol controller communication
13 Connection availability enhancement techniques
     13.1 Protection
     13.2 Restoration
          13.2.1 Re-routing in response to failure
               13.2.1.1 Intra-domain failures
               13.2.1.2 Inter-domain failures
                    13.2.1.2.1 Link failure between adjacent gateway network elements
                    13.2.1.2.2 Gateway network element failure
     13.3 Nested routing domains
Annex A  Configuration of OTN digital and media layers
Appendix I  Example of explicit multi-layer routing topology
Bibliography
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