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Circuit Card Description and Installation
614
NT8D14 Universal Trunk card
Contents
This section contains information on the following topics:
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 553
Physical description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 555
Functional description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 558
Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 561
Electrical specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 597
Connector pin assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 602
Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 603
Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 612
Introduction
Nortel Networks is pleased to introduce the NT8D14CA Universal Trunk
(XUT) card as a replacement for the NT8D14BB card. The NT8D14CA has
been modified to add a longer loop capability for CAMA trunk applications.
The NT8D14CA comes equipped with a set of 2 jumpers for each hybrid that
should be set to the longer loop length (LL) when the trunk is used in a
CAMA application. The jumpers are numbered P35 to P50 and are set to the
shorter loop length (SL) position when it comes from the factory. For each
hybrid, both jumpers should be changed to the LL position only if used as a
CAMA trunk. Otherwise the jumpers should be left to the SL position.