Nortel Networks Circuit Card 311 - Manual (Page 580)

580 NT8D14 Universal Trunk card
Figure 146
NT8D14 Universal trunk card - block diagram
Card interfaces
The NT8D14 Universal Trunk card passes voice and signaling data over
DS-30X loops, and maintenance data over the card LAN link. These
interfaces are described in
"Intelligent Peripheral Equipment" (page 21) .
Trunk interface units
The NT8D14 Universal Trunk card contains eight identical and independently
configurable trunk interface units (also referred to as circuits). Each
unit provides impedance matching and a balanced network in a signal
transformer/analog hybrid circuit.
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 01.04 Standard
Release 5.0 23 May 2008
Copyright © 2003-2008, Nortel Networks
.