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Installation Steps
61179641AL1-5C 3-13
Network Connections
Network connections are accomplished via the 50-pin amphenol connector labeled T1/E1 1-4
(see
Figure 3-9). See Table 3-4 for the pinout of the T1/E1 interface and the analog modem.
Figure 3-9. Total Access 1248 Network Connection
Table 3-4. T1/E1/Modem Interface Pinout
Pin Numbers Description
1, 26 RX Tip/Ring 1
2, 27 TX Tip/Ring 1
3, 28 RX Tip/Ring 2
4, 29 TX Tip/Ring 2
5, 30 RX Tip/Ring 3
6, 31 TX Tip/Ring 3
7, 32 RX Tip/Ring 4
8, 33 TX Tip/Ring 4
9, 34 Unused
10, 35 Unused
11, 36 Unused
12, 37 Unused
13, 38 Unused
14, 39 Unused
15, 40 Unused
16, 41 Unused
17–24 Unused
42–49 Unused
25, 50 Modem Tip/Ring
P
O
RT
S
1-24
OUT
EXPANSION
-4
8
V
.....
,5.0
A
USE COPPER CONDUCTORS ONLY
!
FAN MODUL
E
117
96
7
5
L
1
1179641AL
1
A
-48V RET
-48V
RET
A
T1/E1 1-4