Avaya Nortel Communication Server 1000 Reference page 398

NT8D14 Universal Trunk card
This causes a current to flow through the battery feed resistors in the trunk circuit. Address
signaling is then applied by the far-end in the form of DTMF tones or dial pulses. When the
called party answers, an answer supervision signal is sent by the software, causing the System
to reverse battery and ground on the tip and ringleads to the far-end. Far-end disconnect is
initiated by opening the loop while the near-end disconnect is initiated by restoring normal
battery and ground. The operation represented in
states - incoming call from far-end PBX
trunk call connection sequence - incoming call from far-end PBX
incoming DID trunk calls from a CO.
Note:
Where no near-end answer supervision is provided, the party at the far-end hangs up after
recognizing near-end call termination.
Figure 115: Two-way, loop DR, TIE trunk call states - incoming call from far-end PBX
398 Circuit Card Reference
Figure 115: Two-way, loop DR, TIE trunk call
on page 398 and
Comments? infodev@avaya.com
Figure 116: Two-way, loop DR, TIE
on page 399 also applies to
July 2011