Download our free Monitoring Fundamentals Tutorial.
An introduction to Monitoring Fundamentals strictly from the perspective of telecom network alarm management.
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TL1 is a spiritual precursor to SNMP. Both were intended to be open standards and comprehensive languages. TL1 and SNMP protocols share the following three benefits:
1) Widespread implementation
2) Open standard makes it easier to connect networked devices with monitoring software
3) Verbose command responses
Although there is a wide range of standard TL1 messages, four types comprise the majority of TL1 communication:
1) Autonomous messages
Asynchronous messages (usually events or alarms) that are typically sent by network elements.
2) Input/Command messages
Commands sent by the user or OSS to a network element.
3) Output/Response messages
Replies sent by the network element in response to an input/command message.
4) Acknowledgment messages
Acknowledgments of the receipt of a TL1 input message, usually associated with a delayed report or action.
