Nortel Networks Circuit Card 311 - Manual (Page 627)

Operation 627
Figure 179
Two-way, loop DR, TIE trunk call states - outgoing call to far-end PBX
Note: Where no far-end answer supervision is provided, the party at
the near-end hangs up, after recognizing far-end call termination.
In an outgoing call configuration, the NT8D14 Universal Trunk Card is
connected to an existing PBX by a tie trunk. See
Figure 189 "Two-way,
loop DR, tie trunk call states - outgoing call to far-end PBX" (page 637) .
An outgoing call from the near-end seizes the trunk facility by placing a
low-resistance loop across the tip and ring leads. Outward addressing is
then applied from the CS 1000 in the form of DTMF tones or dial pulses. If
answer supervision is provided by the far-end, reverse battery and ground
on the tip and ring leads are returned. The operation represented in
Figure
189 "Two-way, loop DR, tie trunk call states - outgoing call to far-end PBX"
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 01.04 Standard
Release 5.0 23 May 2008
Copyright © 2003-2008, Nortel Networks
.