Avaya Nortel Communication Server 1000 Reference page 400

NT8D14 Universal Trunk card
far-end PBX
sequence - outgoing call to far-end PBX
An outgoing call from the near-end seizes the trunk facility by placing a low-resistance loop
across the tip and ring leads. Outward addressing is then applied from the System in the form
of DTMF tones or dial pulses. If answer supervision is provided by the far-end, reverse battery
and ground on the tip and ring leads are returned. The operation represented in
Two-way, loop DR, TIE trunk call states - outgoing call to far-end PBX
120: Two-way, loop DR, TIE trunk call connection sequence - outgoing call to far-end PBX
page 403 also applies to outgoing calls on a DID trunk.
Note:
Where no far-end answer supervision is provided, the party at the near-end hangs up, after
recognizing far-end call termination.
Figure 117: Two-way, loop DR, TIE trunk call states - outgoing call to far-end PBX
400 Circuit Card Reference
on page 400 and Figure 118: Two-way, loop DR, TIE trunk call connection
Comments? infodev@avaya.com
on page 401.
Figure 119:
on page 402 and Figure
on
July 2011