1
Introduction
2
Traffic to be controlled
2.1 Considerations for the application of controls
2.2 Hard-to-Reach (HTR) process
2.2.2 Controlling traffic based on HTR status
2.2.3 HTR information exchange
2.3 Methods for specifying the amount of traffic to be controlled
2.3.1 Call percentage control
2.3.2 Call rate control
3 Exchange controls
3.1 Traffic volume controls
3.1.1 Destination controls
3.1.2 Cancellation of direct routing
3.1.3 Circuit directionalization
3.1.4 Circuit turndown/busying/blocking
3.1.5 Specialized
volume controls
3.2 Routing controls
3.2.1 Cancellation of alternative routing
3.2.2 Skip control
3.2.3 Temporary alternative routing
3.2.4
Cancel re-routed overflow
3.2.5 Special recorded announcements
4
Automatic exchange controls
4.1 Automatic congestion control system
4.1.1 Automatic congestion control system:
method 1
4.1.2 Automatic congestion control system:
method 2
4.2 Selective circuit reservation control
4.2.2
General characteristics
4.2.3
Single threshold selective circuit reservation control
4.2.4
Multi-threshold selective circuit reservation control
4.3 Automatic destination control
4.4 Automatic controls deriving from state-dependent routing
5
Status and availability of network management controls
6
Operator controls
7
Controls for intelligent network
7.1 Controls for an SCF via a signalling network
7.2 Controls for an SCF via circuit groups
8
Hierarchy of NM controls
Annex A – Example of Network management controls
selectivity