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PBX Interface Connection DiagramsPassport 4400 Hardware Installation Manual
E-2
* Install jumpers when cable distance to PBX is too long.
Figure E-25. E&M Type II Interface Connection Diagram
-48 V
M
GND
EE
M
SG
SB SB
DETECTOR
+
-
DETECTOR
T
T1
R
R1
+
+
T
R
2-Wire
Operation
4-Wire
Operation
UAVM only: E16
*
AVM: -44 V
UAVM: -48 V
AVM: E41, channel 1
E38, channel 2
UAVM: E14
*
UAVM only: E15
UAVM only: E8
UAVM only: E17
E&M Interface Type ll
PBX