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Total Access 1248 Quad T1 IMA 48-Port DSLAM with Modem Installation and Maintenance Practice
Alarm Connections
The Total Access 1248 provides an alarm port (see
inputs and three alarm outputs (Major, Minor, and Critical). If load shedding is active then the
Critical alarm output will be active. Alarm inputs are activated by shorting A and B contacts
(closing an externally connected relay). The outputs provide both normally open and normally
closed pins (through internal relay contacts) for proper operation with a variety of alarm
panels. Each alarm event generates an autonomous TL1 message that is transmitted via the
in-band management channel to a monitoring device.
A cable with a high density DB-15 male connector on one end and a stub at the other end is
available (P/N 1196DB901L1) for wire-wrap connections to an alarm panel.
PORTS 1-24
Figure 3-8. Total Access 1248 Alarm Connection
The alarm pinouts are shown in
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
3-12
Table
3-3.
Table 3-3. Alarm Pinouts
Color
Red
Red/Black
Red/White
Orange
Orange/Black
White
White/Black
Black
Black/White
Blue/Black
Blue/White
Blue
Green/Black
Green/White
Green
Figure
3-8) with three auxiliary alarm
1179641AL1
A
A
-48V RET
EXPANSION
USE COPPER CONDUCTORS ONLY!
OUT
-48V .....,5.0A
Contact Description
Alarm 3 Input - A
Alarm 1 Input - B
Critical Alarm COM
Minor Alarm COM
Major Alarm COM
Alarm 3 Input - B
Alarm 2 Input - A
Critical Alarm NC
Minor Alarm NC
Major Alarm NC
Alarm 2 Input - B
Alarm 1 Input - A
Critical Alarm NO
Minor Alarm NO
Major Alarm NO
AN MODULE
1179675L1
ALARM
.
61179641AL1-5C
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