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NT1 Type 400 Circuit Pack
Appendix A
TYPE 400 NCTE RACK INSTALLATION
The ADTRAN NT1 Type 400 Circuit Pack, Part No. 1212010, can be
purchased as a separate unit for installation in a Type 400 NCTE rack.
This configuration provides a central location for the NT1 in a custom-
er's wiring closet, and facilitates battery backup. Refer to ADTRAN's
Building a Battery Protected ISDN Phone System for a complete descrip-
tion of the centrally located battery back-up system.
Figure A-1 on page A-2 shows the connector pin assignments of the
ADTRAN NT1 Type 400 Circuit Pack. The Type 400 rack supplies -48V
to the Circuit Pack. In addition, the Type 400 rack provides access to the
necessary wire pairs for connection to the network and the customer's
TE.
After ensuring that connections to the Type 400 rack are correct, and
the circuit pack has been optioned properly, insert the circuit pack into
the Type 400 rack by firmly pushing the circuit pack into one of the
available slots. The circuit pack should slide in smoothly and snap into
place.
61212016L1-20
NT1 T400 User Manual
A-1
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