Owner's manual

Operation 541

Figure 162

Two-way, loop DR, TIE trunk call connection sequence - incoming call from far-end PBX

In an incoming call configuration, the far-end initiates a call by placing

a low-resistance loop across the tip and ring leads. See Figure 171

"Two-way, loop DR, tie trunk call states - incoming call from far-end PBX"

(page 551) and Figure 172 "Two-way, loop DR, tie trunk call connection

sequence - incoming call from far-end PBX" (page 552) on. 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

Nortel Communication Server 1000

Circuit Card Reference

NN43001-311 02.06 Standard

27 August 2008