Nortel-networks Circuit Card Manual de usuario Pagina 565

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Page 565 of 906
Circuit Card Description and Installation
626
NT8D14 Universal Trunk card
Contents
This section contains information on the following topics:
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 565
Physical description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 567
Functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 570
Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 573
Electrical specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 609
Connector pin assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 614
Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 615
Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 624
Introduction
Nortel 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.
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