Cable Pinouts
T1/E1 Connector
T1/E1 Connector
Voice/Fax Channel Connectors
Pin
1
2
3
4
5
6
7
8
Pin Functions (E&M Interface)
Descr
Function
M
Input
E
Output
T1
4-Wire Output
R
4-Wire Input, 2-Wire Input
T
4-Wire Input, 2-Wire Input
R1
4-Wire Output
SG
Signal Ground (Output)
SB
Signal Battery (Output)
MultiVOIP User Guide
}
1
Receive Pair (from line)
2
}
4
Transmit Pair (to line)
5
504