Standard telco RJ11 Connectors use is as follows:
Code:
Pin Color Name Description
1 / nc not connected
2 yellow ? Telco Ground
3 red ? Ring
4 green ? Tip
5 black ? Aux power -48v DC
6 / nc not connected
clip
1 2 3 4 5 6
Also RJ11 cables are rollover by default so what you get is:
y - b
r - g
g - r
b - y
Working at at telco has a few perks after all.