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Wiring up a telephone point

  • 06-02-2004 9:50pm
    #1
    fatherdougalmag
    Registered Users, Registered Users 2 Posts: 1,391 ✭✭✭


    Things have changed since I last did this. The house is wired with 8-core UTP rather than the 4-wire stuff I've seen in the past. For interference reasons I need to relocate my DSL router and there's a point in the kitchen which should do the job. The problem is that I don't know which of the 8 wires are involved. I'm damned if I'm going through all combinations. I know there's only two involved. I don't know if there's any standard involved so I'd appreciate anybody who's in the know before I go chasing the on-site snag man.

    Cheers all.


Comments

  • #2
    Tenshot
    Registered Users, Registered Users 2 Posts: 648 ✭✭✭Tenshot


    Typically, CAT5 has four pairs: orange/white, green/white, blue/white, brown/white. The blue pair is used for phone signals, while orange and green pairs are for 10/100BASE-T networking. Brown is unused, except for some ISDN applications where it carries power.

    This doesn't mean the electrician wired it up that way of course; they may have used a completely arbitary system! However, the phone/DSL signal will almost certainly be on a single pair of the same colour, so worst case, there are only four possibilities to try.

    Is the cable already terminated with an RJ45 socket? If so, then a standard RJ11 phone lead can be plugged into it with no rewiring necessary. Where is the DSL signal entering the house? Is this a self-install, or did an Eircom engineer install a proper splitter somewhere?


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