Nortel Networks Circuit Card - Manual (Page 585)

NT8D14 Universal Trunk card Page 585 of 906
Circuit Card Description and Installation
Figure 123
DID trunk, loop DR call states – incoming call from CO
Far end
originates
Battery-ground
or loop pulsing
or DTMF
(Note)
Note: The near end may be configured for immediate start, delay dial, or
wink start.
Forced
far end
disconnect
Forced
near end
disconnect
Idle
Near end
disconnects
first
Near end
answers
553-AAA1137
Far end
disconnects
first
System (near) end
Low-resistance loop
High-resistance loop
CO (far) end
Ground on tip, battery on ring Battery on tip, ground on ring