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Nortel Networks 1000 User Manual

Page 532

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532

NT8D14 Universal Trunk card

Dial pulses or DTMF tones are then presented from the CO. When the
called party answers, the universal trunk card reverses battery and ground
on the tip and ring leads to the CO. The trunk is arranged for first party
release. The CO releases the trunk by removing the low-resistance loop,
at which time normal battery and ground are restored at the near-end. This
also applies to incoming tie trunk calls from a far-end PBX.

Note:

The near-end can be configured for immediate start, delay dial,

or wink start.

An incoming call from the CO places a low-resistance loop across the
tip and ring leads. See

Figure 157 "DID trunk, loop DR call states -

incoming call from CO" (page 535)

and

Figure 158 "DID trunk, loop DR call

connection sequence - incoming call from CO" (page 536)

.

Dial pulses or DTMF tones are then presented from the CO. When the
called party answers, the universal trunk card reverses battery and ground
on the tip and ring leads to the CO. The trunk is arranged for first party
release. The CO releases the trunk by removing the low-resistance loop,
at which time normal battery and ground are restored at the near-end.
The operation represented in

Figure 157 "DID trunk, loop DR call states -

incoming call from CO" (page 535)

and

Figure 158 "DID trunk, loop DR call

connection sequence - incoming call from CO" (page 536)

also applies to

incoming TIE trunk calls from a far-end PBX.

Note:

The near-end can be configured for immediate start, delay dial,

or wink start.

An incoming call from the CO places a low-resistance loop across the tip
and ring leads. See

Figure 169 "DID trunk, loop DR call states - incoming

call" (page 549)

and

Figure 170 "DID trunk, loop DR call connection

sequence - incoming call" (page 550)

. Dial pulses or DTMF tones are then

presented from the CO. When the called party answers, the universal trunk
card reverses battery and ground on the tip and ring leads to the CO. The
trunk is arranged for first party release. The CO releases the trunk by
removing the low-resistance loop, at which time normal battery and ground
are restored at the near-end. This also applies to incoming tie trunk calls
from a far-end PBX.

Nortel Communication Server 1000

Circuit Card Reference

NN43001-311

02.06

Standard

27 August 2008

Copyright © 2003-2008 Nortel Networks

.