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Operation
649
See
and
When the universal trunk card is seized by the far-end on an incoming call,
a low-resistance loop is placed across the tip and ring leads. Addressing
is then sent by the far-end in the form of battery-ground or loop pulses, or
DTMF tones. The trunk is released at the far-end when the loop is opened.
When the near-end detects an open loop, it returns to a normal state.
a low-resistance loop is placed across the tip and ring leads. Addressing
is then sent by the far-end in the form of battery-ground or loop pulses, or
DTMF tones. The trunk is released at the far-end when the loop is opened.
When the near-end detects an open loop, it returns to a normal state.
See
and
When the NT8D14 Universal Trunk Card is seized by the far-end on an
incoming call, a low-resistance loop is placed across the tip and ring leads.
Addressing is then sent by the far-end in the form of battery-ground or loop
pulses, or DTMF tones. The trunk is released at the far-end when the loop
is opened. When the near-end detects an open loop, it returns to a normal
state. See
incoming call, a low-resistance loop is placed across the tip and ring leads.
Addressing is then sent by the far-end in the form of battery-ground or loop
pulses, or DTMF tones. The trunk is released at the far-end when the loop
is opened. When the near-end detects an open loop, it returns to a normal
state. See
and
When the Universal Trunk is seized by the far end on an incoming call, a
low resistance loop is placed across the tip and ring leads. Dial pulses are
sent by the far end by interrupting the loop current. The trunk is released
at the far end when the loop is opened. When it detects an open loop, the
near end reverts to a normal state.
low resistance loop is placed across the tip and ring leads. Dial pulses are
sent by the far end by interrupting the loop current. The trunk is released
at the far end when the loop is opened. When it detects an open loop, the
near end reverts to a normal state.
Outgoing calls
When seized as a dial-selected outgoing trunk, the near-end places the
battery on the tip and ground on the ring. This alerts the far-end of the
seizure. The far-end responds with a low resistance across the tip and
ring leads.
battery on the tip and ground on the ring. This alerts the far-end of the
seizure. The far-end responds with a low resistance across the tip and
ring leads.
See
and
.
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311
01.04
Standard
Release 5.0
23 May 2008
Copyright © 2003-2008, Nortel Networks
.