Heartbeat alarms

Heartbeat messages are used to signal the health of the interface. Heartbeat messages are sent at regular time intervals, independent of the occurrence of alarms. The frequency of the heartbeat message can be configured at installation time. The default is one minute.

In addition to regular heartbeat messages, the start initialization message is preceded by a heartbeat message. The Lucent ITM-NM heartbeat message has the following format:

ae
tm <string>
n <THE LINK IS UP>
<012><012>

The following table describes the heartbeat event fields and corresponding values.

Table 1. Lucent ITM-NM heartbeat event fields
Field Name	Values	Description
`tm`	`string`	This field specifies the time stamp. The format is MM-DD-YYYY HH:MM:SS.
`n`	`THE LINK IS UP`	This field contains a description of the alarm.