TL1 protocol

TL1 is an ASCII-based management protocol mainly used for managing telecommunication networks.

The protocol specifies the following types of messages:

  • Input commands sent to a network element.
  • Acknowledgements messages sent from the network element to acknowledge instructions from input command messages.
  • Detailed responses from the network element to input commands.
  • Autonomous messages sent by network elements either generated periodically, or used to report an unusual event.
  • Normal, acknowledge, deny, or partial responses sent by the network elements.
Note: The TL1 Probe processes the TL1 message format as specified in the Bellcore Standard GR-831-CORE Operations Application Messages- Language for Operations Applications Messages.