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Wiring phone jack

Discussion in 'Electronic Basics' started by Roland Rabien, Oct 15, 2003.

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  1. I want to wire up a new phone jack, but I took the old one off before I
    remembered the wire positions. The old one was working fine, it was just
    ugly.

    The phone wire from the wall has 3 colors blue/yellow/white

    The phone jack has 4 wires black/yellow/red/green

    Any idea how to hook it up?

    The house was built in 1958, it is in Canada, if that matters at all.

    Thx
    Roland
     
  2. SHAUN

    SHAUN Guest

    Roland you only need to of the wires in order to have service at that jack
    so, hook yellow to yellow and black to blue, this should work because it
    sounds like you have CAT 3 cable running through your house with with a
    newer version of a rj-11 connector. but I may be wrong you could always go
    to the CSA (Canadian Standards Association) website and find the correct way
    to terminate that jack! I hope this helps
     
  3. Jim Large

    Jim Large Guest

    Residential phone wiring in North America used to use
    four colors, red/green have always been "line 1" and
    yellow and black for other purposes (e.g., for "line 2").
    If your replacement phone jack has red, yellow, green,
    and black wires, and you have a single-line telephone,
    then you want to hook up the red and green wires.

    Newer phone wiring uses pairs of wires that are twisted
    together, and a standard color code that assigns colors
    to pair numbers:

    http://www.cisco.com/univercd/cc/td/doc/product/core/cisagspl/agshim/67055.htm

    Residential phone wiring of this type usually will have
    three or four pairs with the colors being blue/white,
    orange/white, green/white, and maybe brown/white. The
    blue/white pair is supposed to be "line 1", but if it
    was not installed by a professional, then your phone
    line could be on one of the other pairs instead.

    -- Jim L.
     
  4. JeffM

    JeffM Guest

    ...wire up a new phone jack
    There is ~50Vdc between 2 wires; those are the line (red/green).
    If someone calls you while you are messing with the wires,
    there will be ~100Vac on them.

    A third wire may show continuity to ground
    (water pipe / 3rd prong in outlet); that is ground (black).
     
  5. SHAUN

    SHAUN Guest

    Roland you only need to of the wires in order to have service at that jack
    so, hook yellow to yellow and black to blue, this should work because it
    sounds like you have CAT 3 cable running through your house with a
    newer version of a rj-11 connector. but I may be wrong you could always go
    to the CSA (Canadian Standards Association) website and find the correct way
    to terminate that jack! I hope this helps
     
  6. I got it working. Thanks for the help.
     
  7. Or you could go to the newsgroup com.dcom.cabling and get some advice
    from people who know what they're talking about.

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