tap into a cat 5 phone line

Discussion in 'Community Discussion' started by mmmmmmm, Jun 1, 2006.

  1. mmmmmmm macrumors newbie

    Joined:
    Jun 1, 2006
    #1
    i'm 'helping' run a phone line to a new room at a friends house.
    they have voip - don't know the company- so no phone
    connector box. there is a phone line running near the room
    that i can tap into, but it is cat 5. how do i find which
    two lines of the 8 are the phone lines?
    thank you.
     
  2. jsw Moderator emeritus

    jsw

    Joined:
    Mar 16, 2004
    Location:
    Andover, MA
    #2
    You'll need to find either end of it to be sure. No matter what might supposed to be the 2 or 4 wires to be used, you don't know until you look at the end(s).

    Are you sure you can't run another wire? It's a much better thing to do in the long run, esp. if they ever want to use the line for ethernet in the future.
     
  3. realityisterror macrumors 65816

    realityisterror

    Joined:
    Aug 30, 2003
    Location:
    Snellville, GA
    #3
    It depends entirely on the installer, which is why you chould be glad there's only... 28 combinations of 2 wires with 8 choices...

    Honestly, it shouldn't be that hard.

    Try color + color/white combinations first.

    As hmmfe says below, blue is usually used first.
     
  4. hmmfe macrumors regular

    Joined:
    Feb 28, 2003
    #4
    Well, it could be any of the 4 pairs as jsw says. But to give you something to go on, I'd try the blue/white, blue pair first. Then try the orange/white, orange pair. If the wiring is to standard, the blue pair is line 1 and the orange pair is line 2.
     

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