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3-68
Description
The T-1 Trunk card and the system software provide tools to help detect
and isolate problems which may occur with the T-1 circuit. There are six
LEDs mounted on the outside edge of the T-1 Trunk card which either
light or flash to indicate a variety of conditions on the T-1 circuit. The
Central Office Maintenance Center can send a command to place the CSU
into Line Loop Back mode. If there is no CSU, the T-1 Trunk card responds
to the Line Loop Back command.
The buttons on the digital telephone are defined as shown below when
entering the T-1 Alarm programming area:
CARRIER
LOSS
1
BIPOLAR
VARIATIONS
5
9
MINOR
ALARM
13
17
2 1
Enable/Disable (Carrier Loss Alarm)
Programming Steps
1. Press the CARRIER LOSS flexible button (FLASH 47, Button #1).
2. Enter a 0 or 1 on the dial pad to enable/disable this feature.
BLUE
ALARM
Q
2
FRAME
SLIP
T
6
O
1 0
MAJOR
ALARM
D
14
J
1 8
Z
22
Button #1 and Button #11 LEDs are lit steady. The following message
displays:
CAR R IER LOS S
EN AB LE D
YELLOW
ALARM
W
3
DATA
ERRORS
Y
7
P
11
TIME
PERIOD
F
15
K
19
X
23
T-1 Alarm Programming
RED
ALARM
E
4
U
8
CLEAR
ALARM
A
1 2
ATTENDANT
DISPLAY
G
16
L
20
C
24
0- 1
R
I
S
H
;
V
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