Nortel Networks Circuit Card 311 - Manual (Page 591)

Operation 591
to receive digits, it returns a dial tone. Outward address signaling is then
applied from the system in the form of loop (interrupting) dial pulses or
DTMF tones.
Figure 151
Ground start call states - incoming call from CO/FX/WATS
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 01.04 Standard
Release 5.0 23 May 2008
Copyright © 2003-2008, Nortel Networks
.