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4.2 E & M (TIE) Line Installation
144 E & M Installation
Connecting to the E&M Central Office
1. 2-wire voice path
2. 4-wire voice path
T
R
E
M
GROUND GROUND
-48V
-48V
KX-TD184 E&M Central Office
T1
R
T
R1
E
M
GROUND GROUND
-48 V
-48 V
Voice
Transmit
Voice
Receive
Voice
Transmit
Voice
Receive
KX-TD184 Another KX-TD184