Expiration of the Link Loss Delay Timer triggers Communication Manager alarm notification. These events and their associated alarm levels are in the table.
Communication Manager alarms
Event
Alarm level
Link Loss Delay Timer expires (loss of link to gateway)
Major
Gateway reconnects
Clear
Original gateway fails to reconnect
Major
Original gateway reconnects
Clear
Gateway alarms
The Gateway events, their associated alarm levels, and SNMP status are listed in the table.
Gateway events and alarms
Event
Alarm level
Log
SNMP
Loss of link
Minor
Event
Trap
Link restored
Cleared
Event
Trap clear
Registration successful
Informational
Event
Trap
Registration failed
Major
Event
Trap
No controller provisioned
Major
Event
Trap
Controller provisioned
Major
Event
Trap clear
Connection to Survivable Remote Servers
Major
Event
Trap
Connection fallback to primary
Major
Event
Trap clear
Note:
Communication Manager raises a minor alarm until the Link Loss Delay timer expires. If the link to the original gateway is restored before this timer expires, then the alarm is cleared. If the Link Loss Delay Timer expires but the gateway successfully connects with a Survivable Remote Servers, the main server generates a warning alarm anyway, even though the H.248 link is up to another server.
