VF Connector Pin Assignments
Table C-2 lists the connector pin assignments for Model 3920Plus modular jacks as well as the
pin assignments for the TELCO jacks. (See Figure C-1.)
Pi
Pin
1
4-Wire: TX
2-Wire: TX/RX
2
4-Wire: TX
2-Wire: TX/RX
3
4
5
6
7
4-Wire: RX
8
4-Wire: RX
3920-A2-GN31-10
Table C-2
VF Connector Pin Assignments
L
d
Di l
Leased
Dial
Ring
Tip
Figure C-1. VF Pin Orientation
April 1995
Type of Telco Jack
RJ11
JM8
Ring 1
Tip 1
Ring
Tip
Tip
Ring
Pin Assignments
6-Pin
Leased
Ring
Tip
C-3