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• ITU-T Rec. Q.542 (1988)
• 1 General
• 2 Maintenance design objectives
  • 2.1 Status and other information
  • 2.2 Inputs and outputs
  • 2.3 Routine testing
  • 2.4 Trouble localization
  • 2.5 Fault and alarm detection and actions at interfaces A, B, V2, V3 and V4
  • 2.6 Fault and alarm signal detection and actions at interface V1
  • 2.7 Fault and alarm signal detection and actions at interface Z
  • 2.8 Fault and alarm signal detection and actions for transmission systems
  • 2.9 Fault and alarm signal detection and actions for channel associated signalling (2048 and 8448 kbit/s)
  • 2.10 Fault and alarm signal detection and actions for channel associated channel signalling (1544 kbit/s)
  • 2.11 Fault and alarm signal detection and actions for common channel signalling
  • 2.12 Fault and alarm detection and consequent actions – other functions of the exchange
  • 2.13 Supervision or testing of interface function
  • 2.14 Supervision or testing of signalling functions
  • 2.15 Supervision or testing of exchange connections
  • 2.16 Supervision or testing of digital link performance
  • 2.17 Supervision or testing of analogue link performance
• 3 Subscriber line maintenance and testing design objectives
  • 3.1 Analogue subscriber lines
  • 3.2 Digital subscriber lines
• 4 Operations design objectives
  • 4.1 General
  • 4.2 Operations features
  • 4.3 Exchange functions related to the TMN
• 5 Network management design objectives
  • 5.1 General
  • 5.2 Network management elements
  • 5.3 Information provided by an exchange for network management purposes
  • 5.4 Exchange controls for network management
  • 5.5 Automatic controls for network management
  • 5.6 Order of application of controls