Verilink HDM 2180 (880-503048-001) Product Manual - Manual (Page 69)

Verilink HDM 2180 User Manual 6-1
Chapter
6
Troubleshooting
What Elicits an Alarm
The NCM 2000 module polls the HDM 2180 modules for alarms.
If alarm reporting is enabled for the node and for the HDM 2180,
the NCM retrieves and sends alarms to the Craft Interface, Node
Manager, or an SNMP agent where they can be viewed.
Alarms can also be automatically sent to a specified printer by
setting up the printer address in the various management utilities
menus. See the appropriate management utility user manual for
information on how to do this.
The Alarms
The alarm list displays:
• Whenever the system powers up and any module performs a
self-test
• Power supply input is lost
• A default or user-designated threshold is exceeded
• A Yellow Alarm is received from the network
• An unframed all-ones or alarm indication signal (AIS) is
reveived from the network
• There is a loss of signal (LOS) or loss of frame (LOF)
• A CSU or DIU loopback is present
• A module fails
• A module is removed from the shelf
Alarm Listings
On any of the various listings of the alarms being received by the
NCM for the HDM, the alarm listing will generally show the
following information about the alarms (This may vary depending
on the management method you are using).