Nortel Enterprise 1000 Reference Manual page 65

Figure 19
DID trunk, loop DR call states – incoming call
Note: The near-end may be configured for immediate start, delay dial, or
wink start.
Succession Communication Server for Enterprise 1000 Circuit Card Reference Guide
Analog Trunk Cards - NT8D14 Universal Trunk Card
Succession CSE 1000
Ground on tip, battery on ring Battery on tip, ground on ring
Idle
Forced
near-end
disconnect
Battery-ground
or loop pulsing
or DTMF
(Note)
Far-end
originates
(near-end)
Forced
far-end
disconnect
Near-end
disconnects
first
Page 65 of 236
Far-end
disconnects
first
Near-end
answers
553-CSE6243