ITU-T Rec. I.602 (11/1988) – Application of maintenance principles to ISDN subscriber installations
1 Scope of application
2 Network configuration for maintenance activities
3 Automatic supervision
4 Internal tests
5 Test call from the MSP
6 Call to a test responder from the subscriber installation
7 Loopbacks
8 Status request
9 Failure report to MSP
10 Interrogation of parameter values and counters