Nortel Networks 1000 - Manual (Page 570)

570 NT8D14 Universal Trunk card
Figure 186
Two-way, loop OAID, TIE trunk call states - incoming call from far-end PBX
When seized as a dial-selected outgoing trunk, the Universal Trunk places
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.
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 02.06 Standard
27 August 2008
Copyright © 2003-2008 Nortel Networks
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