Nortel Circuit Card 311 Reference page 763

Condition
Digits
Far-end answers
Far-end on hook first
Network taken down and trunk idled when
near-end goes on hook
Near-end on hook first, network taken down
Far-end on hook, trunk idled
Table 278
DX signaling - incoming calls with originating party release
Condition
Idle
Seizure
(dial tone to far-end: near-end ready for digits)
Digits
Near-end answers
Far-end on hook first
Network taken down and trunk idled
Near-end on hook first, network taken down
Far-end on hook, trunk idled
Table 279
DX signaling - outgoing calls with originating party release on tandem connections
Condition
Idle
Seizure (far-end ready for digits)
Dial CO/FX/WATS
Stop sender
Go sender (universal service provided by far-end
PBX if originating end is senderized)
CO/FX/WATS offices ready for digits
Copyright © 2003-2008, Nortel Networks
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Current in
signaling lead
Current flow interrupted
for each pulse
No current flow
Current flow
No current flow
Current flow
No current flow
Current in
signaling lead
No current flow
Current flow
Current flow interrupted
for each pulse
No current flow
Current flow
No current flow
Current flow
No current flow
Current in
signaling lead
No current flow
Current flow
Current flow interrupted
for each pulse
No current flow
Current flow
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 01.04 Standard
Release 5.0 23 May 2008
Operation 763
State of trunk
detector
High
Low
High
High
Low
High
State of trunk
detector
High
Low
Low-high-low for each
pulse
Low
High
High
Low
High
State of trunk
detector
High
High
High
Low
High