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