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Not working pHone

Is there a specific way to wire wall jacks to use with the merlin legend r7 system? When we plug the phone direct into the module it works, when we plug into the jack we have nothing, please help

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  • grab1 Apr 15, 2009

    Maybe you can help me figure this out, I can plug the phone directly into the module and it works, the wires from the building go to a punchdown block then into the module, on the other end is a cat 5 jack using 4 wires, the 4 middle pins i get nothing at the jack


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The Legend system uses pins 543and 6 as a two pair. In a 568B configuration, those are the blue and green pairs. If your house cable is wired straight through, it should be easy to use 4 conductor cables to the phone and to the modules.


Posted on Apr 15, 2009

  • Carl Navarro
    Carl Navarro Apr 15, 2009

    Probably becuase they're not the same 4 pins. Remember, 8 pin wiring comes in many flavors; 568-A, 568-B and sometimes a DIY wiring for Ethernet. The phone uses 5436 with the tab down the White-Blue and Blue wire are 5&4 and in A the White Orange and Orange wires are in 3&6. Iin 568-B, the White Green and Green wires are in 3&6. At some point, someone probably translated the pairs. To the Legend, they used 4 conductor cable, wiring the blue pair to blue, but the orange pair has to go to green if the house cable is wired 568-B style.

    In structured cabling, we don't have to worry about that, because jacks are the same at both ends :-) It's usually the older stuff that gets mixed because of the use or reuse of the cable.



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