John Tafasi wrote: > > Hi group, > > Can some one tell me how many twisted pair there are in a regular telephone > line. > > Thanks > > John Tafasi Assuming you are referring to the USA, although the analog phone or modem itself uses only one pair (usually the red and green wires) the actual wire bundle to each house is four (4) wires or two pair: one pair consisting of a green wire and a red wire, and a second pair consisting of a yellow wire and a black wire. Even on the cheap extension cords you buy in the store, there will be two pair of wires.
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