Specifications

Chapter 4 4-Wire E&M/TO Configuration
4-4
Switching Equipment Detector is the E-lead function
Driver is the M-lead function
M Lead
Detector
M
E
E Lead
Detector
-48V
-48V
E&M Type 1
M Lead
Detector
-48V
M
SB
E Lead
Detector
-48V
E
SG
E&M Type 2
Tandem Mode
(Originating)
(Switching Equipment)
Normal Mode
(Terminating)
(Channel Equipment)
M Lead
Detector
-48V
M
SB
E Lead
Detector
-48V
E
SG
E&M Type 4
M Lead
Detector
M
E
E Lead
Detector
-48V
E&M Type 5
-48V