Specifications

Theory of Operation
164 025-9035AA
PABX Tie-Trunk (E&M)
(Reverse signaling available)
PABX Tie-Trunk
(E&M)
Terminal detects
current in M-lead
Turn on
Loop Light
Pulse
Digits
DTMF on
Tip-Ring?
Flash
Loop Light
Flash
Test 1, Test 2
Subscriber number
Trunk Prefix +
feed digits
Terminal connects
E-lead to ground
Turn on
Answer Light
Check
Subscriber
number
End
Page
Normal Battery
on Tip-Ring
Answer &
Loop lights off