Table 4:
Sample Backplane Relay Addresses
Connector
P3
P4
P5
P6
P7
P8
P9
P10
5.3.10
2012 NSL Relay Board Wiring
The 2012 NSL Relay Board plugs into the backplane boards of the NSL units.
There may be up to eight relay boards in each backplane board (to a maximum of
128 relay boards for 16 NSL backplane boards).
In each NSL backplane the relay boards are numbered 1 to 8, starting from the
bottom of the backplane and going to the top. Each relay board provides 12
resident telephone lines connections, for a maximum of 1536 telephone lines per
system.
Connections are made via the CA-71A BIX Block or RJ-71C Punch Down Block
Wiring Configuration as follows:
CA-71A BIX Block. The CA-71A (for Canada) wiring configurations of BIX
and Punch Down Block are shown in Figure 35 and Table 5.
RJ-71C Punch Down Block. The RJ-71C (for U.S.A.) wiring configurations of
BIX and Punch Down Block are shown in Figure 36 and Table 6.
Normally, the required blocks are installed by the telephone company. Each
block serves up to 12 telephone lines.
The 50-pin amphenol connector on the BIX block connects to the 2012 relay card
using the standard 9106 cable.
Version 1.6
Telephone Access System Installation and Operation Manual
LT-969
Copyright 2012
Backplane Number Setting
Jumper 1
Address 1-96
1 to 12
97 to 108
13 to 24
109 to 120
25 to 36
121 to 132
37 to 48
133 to 144
49 to 60
145 to 156
61 to 72
157 to 168
73 to 84
169 to 180
85 to 96
181 to 192
NSL Relay Cabinet Installation and Wiring
Jumper 2
Address 97-192
Address 193-288
193 to 204
205 to 216
217 to 228
229 to 240
241 to 252
253 to 264
265 to 276
277 to 288
Jumper 3
69 (112)
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