3Com SuperStack 3 NBX, Administrator'S Manual

Page: 406 / 496

406 C
HAPTER
10: T
ROUBLESHOOTING
Alarms on NBX
Digital Line Cards
The T1 and E1 Digital Line Cards support all of the alarm states and
signals described in “Alarm Descriptions” earlier in this chapter. Two
status lights indicate the status of the T1 and E1 cards:
Table 74 Digital Line Card Status Lights
Status Light Purpose
Nominal On: Indicates that there are no error or alarm conditions.
Flashing: Indicates that a call is active on at least one channel
of the T1 or E1 Digital Line Card.
CF (Carrier Fail) On: Indicates that a Red Alarm state or Blue Alarm state exists
on the card.
To determine which alarm state exists:
1 Log in to the NBX NetSet utility using the administrator
login ID and password.
2 In the NBX NetSet - Main Menu window, click Device
Configuration .
3 Click the Digital Line Cards tab.
4 In the Select Device Type pull-down list, select T1 Span List
or, if you are using an E1 card, select ISDN PRI Span List .
5 Click Apply .
6 Select the span you want.
7 Click Status . The words Red Alarm or Blue Alarm appear in
the Status field.
RA (Remote Alarm) On: Indicates a Yellow Alarm state on the card.
To confirm that the Yellow Alarm state exists:
1 Log in to the NBX NetSet utility using the administrator
login ID and password.
2 In the NBX NetSet - Main Menu window, click Device
Configuration .
3 Click the Digital Line Cards tab.
4 In the Select Device Type pull-down list, if you are using a
T1 Digital Line Card, select T1 Span List or, if you are using
an E1 Digital Line Card, select ISDN PRI Span List .
5 Click Apply .
6 Select the span you want and click Status . The words
Yellow Alarm appear in the Status field.
NOTE: This light is used only on the T1 Digital Line Card.
LB (Loop Back) On: Indicates that the card is in loop-back testing mode.
NOTE: This light is not used to indicate any of the Red, Blue,
or Yellow alarms.