The name for the 2 wires in a telephone circuit (Tip and Ring) are derived from old style phone jacks. The Tip is at 0 Volts DC and the Ring is at -48 VDC. Typical residential wiring pairs are:

Green Tip---Red Ring
Black Tip---Yellow Ring
White Tip---Blue Ring

RJ11 pin pairs are:

3 Tip---4 Ring
5 Tip---2 Ring
1 Tip---6 Ring

got feedback? got feedback?

Any feedback you provide is sent to the owner of this FAQ for possible incorporation and shown publically as well.

by Coot edited by Ryokincaid