1 General
1.1 Introduction
1.2 Terminology
1.3 Performance limits and objectives
1.4 Maintenance records
2
Fault reporting procedures
2.1 Control and sub-control status
2.2 Fault information exchange
3
Fault localization
4
Maintenance tests
4.1 General
4.2 Maintenance intervention tests
4.3 Returning to service tests
4.4 Loopback tests
5
In-service monitoring
6
Temporary service restoration
6.1 Mechanisms for implementing temporary service restoration
6.2 Time to restore service
6.3 Restoration procedure
6.4 Returning to normal routing
6.5 Information that should be exchanged
References