Specifications

Chapter 7 Battery Reversal FXS/DPO
7-6
TP Idle/Busy CPE loop state during
Trunk Processing (TP)
Forward battery
applied to all CPE
loops during Trunk
Processing.
Reverse battery applied to all
CPE loops during Trunk
Processing.
Channel Test
(1 switch per channel)
Individual channel busy Normal channel
operation
Channel is busy - reverse
battery applied to CPE loop;
A/B bits to network are
forced to 1/1. In addition, if
Switch A is ON, 4 seconds of
ringing voltage is applied to
local loop, and if Switch B is
ON, 4 seconds of ringback
tone is sent toward network.