2012 12 Unit Telephone Line Relay Card
The 2012 Telephone Line Relay Card plugs into the Backplane Boards of the NSL Relay Cabinets. Each Backplane supports eight 2012 relay cards for a total of 128 relays per NSL Backplane. Each 2102 Telephone Line Relay Card provides for connection to 12 resident telephone lines for a maximum of 1,536 per system. The connections are done via the CA-71A (Canada) BIX Block or RJ-71C (U.S.A.) Punch Down Block Wiring Conﬁguration. The 50 pin Amphenol connector on the BIX block is connected to the 2012 relay card using the standard 9106 relay cable.
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