Nortel Circuit Card Installation Manual page 648

Page 648 of 906
Figure 152
E&M Type II signaling patterns – originating party release on a tandem connection
Outgoing calls from system (near end)
Incoming calls to system (near end)
Note: IMM = Immediate start
DDL = Delayed dial
WNK = Wink start
553-3001-211 Standard 3.00
NT8D15 E&M Trunk card
Near end M/SB leads
Open
Idle
Dial CO/
FX/WATS
O/G tie
trunk disc
Far end
Far
disc
end
disc
first
O/G tie
trunk disc
first
Near end M/SB leads
Open
Idle
CO/FX/WATS
Orig
end
disc
COS-no ans sup
CO/FX/WATS ans
Local end may be arranged
for IMM, DDL, or WNK
Far end seizes
August 2005
Closed
Near end
seizes
Go
Stored office DN digits
outpulsed after GO signal
Universal service provided
Stop
by far end PBX if originating
end is senderized
Far end ans
Closed
Dial CO/FX/WATS and office DN
disc
CO/FX/WATS end disc first
Orig end
(ground start only)(COS-ans sup)
disc first
Pseudo-answer supervision
provided approx. 150 ms
after last dial pulse
Near end stores office DN
Ð If ground start trunk, outpulse
toward office after ground
detection
Ð If loop start trunk, outpulse
toward office 1 sec later
553-AAA1154