One of my customers has build a new house with pre-installed cables for internet. The only thing he didn't think about was installing a cable for his telephone line.
Behind his desk, he has a "spare" UTP cable, my question.
Can this cable be used to replace a telephone line.
This client has a internet and telephony contract, using a experiabox phone/internet modem.
Any help would be great. I knowe I have to use a RJ11 plug.
Spare Cat-5/5e/6? Sure. If you need RJ11 instead of RJ45, you'd need to snip off any existing RJ45 connection and replace it with an RJ11. For a single phone line, you only need 1 pair (2 wires) out of the existing 4 (but use a matched pair). For a 4-conductor/2-line RJ11, use 2 pair. For a full 6-conductor/3-line RJ11, use 3 pair.
Here's a wiring guide (source):
The colors are somewhat arbitrary; you just need to make sure you the the pairings in the right order at both ends.
Just buy a cable that have 1 rj45 and the other end 1 rj 11 But if you buy ip phone just connect it, be sure to change the swich from data to voice
