Nortel Circuit Card 311 Reference 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
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.
Copyright © 2003-2008, Nortel Networks
.
"Intelligent Peripheral Equipment" (page
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 01.04 Standard
Release 5.0 23 May 2008
21).