Nortel Circuit Card Installation Manual page 596

Page 596 of 906
Figure 132
Two-way, loop DR, TIE trunk call states – incoming call through senderized, tandem PBX
from a CO/FX/WATS trunk
Note 1: Dial CO/FX/WATS and office DN.
Note 2: If ground start trunk, outpulse toward office after ground detection.
If loop start trunk, outpulse toward office 1 second later.
Note 3 : Pseudo-answer supervision is provided by near end at expiration of
end-of-dial timer.
Note 4: Where no far-end answer supervision is provided, party at far end
hangs up after recognizing near-end call termination.
553-3001-211 Standard 3.00
NT8D14 Universal Trunk card
Ground on tip,
battery on ring
Idle
Battery-ground
or loop pulsing,
or DTMF
(Note 1)
CO end
answers
(no ans sup)
Far end
disconnects
first
Far end
disconnects
Near end
disconnects
August 2005
System (near) end
Battery on tip,
ground on ring
Far end
hangs up
(Note 4)
Far end
originates
Near end
stores
office DN
(Note 2)
CO/FX/WATS
ground start
disconnect
Near end
answers
(ans sup)
(Note 3)
Far end
disconnects
first
553-AAA1143