Nortel Networks 311 사용자 설명서
Operation
771
Condition
Current in
signaling lead
signaling lead
State of trunk
detector
detector
Stop sender
No current flow
Low
Go sender (universal service provided by far-end
PBX if originating end is senderized)
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
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
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 284
DX signaling - incoming calls with originating party release on tandem connections
DX signaling - incoming calls with originating party release on tandem connections
Condition
Current in
signaling lead
signaling lead
State of trunk
detector
detector
Idle
No current flow
High
Seizure
(CS 1000 can be arranged for IS, DD, or WS)
(CS 1000 can be arranged for IS, DD, or WS)
Current flow
Low
Near-end ready for digits
Dial CO/FX/WATS and office DN
Current flow interrupted
for each pulse
for each pulse
Low-high-low for each
pulse
pulse
If a ground start*, the stored digits are sent out
on CO/FX/WATS trunk after ground detection. If
a loop start, the stored digits are outpulsed on
CO/FX/WATS trunk after 3 seconds.
on CO/FX/WATS trunk after ground detection. If
a loop start, the stored digits are outpulsed on
CO/FX/WATS trunk after 3 seconds.
If answer supervision is enabled, pseudo-answer
supervision is sent approximately 13 seconds
after last dial pulse is received
supervision is sent approximately 13 seconds
after last dial pulse is received
No current flow
Low
If no-answer supervision is enabled, CO end
disconnects
disconnects
Current flow
Low
Originating end disconnects – network torn down
and trunk idled
and trunk idled
No current flow
High
Note: * – CO ground start: the trunk is idled and the network taken
down, but the incoming tie trunk is controlled by the originating end.
down, but the incoming tie trunk is controlled by the originating end.
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311
01.04
Standard
Release 5.0
23 May 2008
Copyright © 2003-2008, Nortel Networks
.