Quote:
Originally Posted by Telecolor 3007
Why 4 wires an not 2?
In U.S.A., they would install you a telephone line at an farm or cabin even if you are 4 miles away from another telephone line?
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Depends... Most homes at least by the 40's were on the inside outlets wired with 4 wire cable even if the wire going between the pole and your house was only 2 wire.... one reason was so a second line could be easily added with out pulling new wire to each outlet... also some older phones were 3 wire...Red green and yellow... those work on 2 wire if you tie the yellow into the green... there was some purpose for the 3rd wire but I have forgotten it in the.1-2 decades since I was told.