590 NT8D14 Universal Trunkcard
Figure 150
Loop start call connection sequence - incoming call
Outgoing calls
For outgoing calls, the software sends an outgoing seizure message to
place a low-resistance loop across the tip and ring leads toward the CO.
See Figure 151 "Ground start call states - incoming call from CO/FX/WATS"
(page 591) and Figure 152 "Ground start call connection sequence -
incoming call from CO/FX/WATS"(page 592). When the CO detects the
low-resistance loop, it prepares to receive digits.When the CO is ready
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 01.04 Standard
Release 5.0 23 May 2008
Copyright© 2003-2008, Nor tel Networks
.