Nortel Circuit Card Installation Manual page 582

Page 582 of 906
Figure 121
Ground start call states – outgoing call to CO/FX/WATS
553-3001-211 Standard 3.00
NT8D14 Universal Trunk card
High-resistance loop
Forced
Idle
near end
disconnect
Forced
far end
disconnect
Near end
disconnects
first
Near end
disconnects
first
August 2005
System (near) end
Ground on ring
Near end
originates
Dial
tone
CO toll denial
Far end answers
(ans sup)
and ringback
tone removed
Low-resistance loop
Far end
disconnects
first
Loop pulsing
or DTMF
Ringing
and
ringback
tone
Far end
answers
(no ans sup)
and ringback
tone removed
553-AAA1135