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NSL Backplane Number Selector. (located between P1 and P2).
Figure 43. NSL Backplane
Attention: High voltages are present on this board during the ringing of suite
5.3.9
Using NSL with Phone Lines that Provide DSL Service
If the building's telephone lines provide both DSL (digital subscriber line) and
POT (plain old telephone) services then the ADSL-100 filter module is required
to filter data signals. This filter module is installed between P4 on the NSL
Controller board and P1 on the first Back Plane board that connects to it. Refer to
the figure below for details on connecting the ADSL-100 module.
78 (119)
Telephone Access System Installation and Operation Manual
LT-969
Copyright January 2017
TX3-NSL-8M Relay Control Unit
telephones.
NSL Relay Cabinet Installation and Wiring
2016 NSL Unit Relay Backplane Boards
Version 3.7
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How can the caller ID altered to show New title when a call is received ?