Nortel Networks 1000 - Manual (Page 683)

Operation 683
Table 253
DX signaling - outgoing calls with originating party release on tandem connections (cont’d.)
Condition
Current in
signaling lead State of trunk
detector
Dial CO/FX/WATS Current flow
interrupted for each
pulse High
Stop sender No current flow Low
Go sender (universal service provided by
far-end PBX if originating end is senderized) Current flow High
CO/FX/WATS offices ready for digits
Stored Office DN digits Current flow
interrupted for each
pulse High
Outpulsed No current flow Low
Far end answers No current flow Low
Far end on hook first Current flow High
Near end on hook, network taken down, trunk
idled No current flow High
Near end on hook first, network taken down Current flow Low
Far end on hook, trunk idled No current flow High
Table 254
DX signaling - incoming calls with originating party release on tandem connections
Condition
Current in signaling
lead State of trunk
detector
Idle No current flow High
Seizure
(Meridian 1 may be arranged for IS, DD, or WS)
(near-end ready for digits) Current flow Low
Dial CO/FX/WATS and office DN Current flow
interrupted for each
pulse Low-high-low for each
pulse
Stored digits outpulsed on CO/FX/WATS trunk
after ground detection if a ground start, but after
3 seconds if a loop start
If answer supervision: pseudo-answer
supervision is sent approximately 13 seconds
after last dial pulse received No current flow Low
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 02.06 Standard
27 August 2008
Copyright © 2003-2008 Nortel Networks
.