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The expanders allow a total of 16 backplanes to be installed, allowing for up to
1535 relays.
Note:
The TX3-NSL-8M and any TX3-8EC and/or TX3-16EC must all
be adjacent to each other, mounted on the same wall and in the same
room.
TX3-NSL-8M
NSL Unit
Figure 33.
NSL Expanders
TX3 Telephone Access System Installation and Operation Manual
NSL Relay Cabinet Installation and Wiring
Each slot
accepts a
2012 NSL
Relay
Board
TX3-8EC NSL
Relay Backplane Expander
TX3-16EC NSL
Relay Backplane Expander
65
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