SMC Networks SMC7500A/VCP - Manual (Page 30)

T
ROUBLESHOOTING
18
The outer wire-pair is only connected if there is a second telephone line,
and carries voice only.
Pin Signal Name Wire Color
1 Not used
2 Line 2 Tip Black or
White/Orange
3 Line 1 Ring Red or Blue/
White
4 Line 1 Tip Green or
White/Blue
5 Line 2 Ring Yellow or
Orange/White
6 Not used
1 2 3 4 5 6
Blue/White White/Blue
R1 T1
1 2 3 4 5 6
Red Green
R1 T1 R2 T2
Black Ye
llow
1 2 3 4 5 6
Blue/White White/Blue
R1 T1 R2 T2
White/Orange Orange/White
6x2 Jack 6x4 Jack 6x4 Jack
T = Tip R = Ring