Sunday, March 1, 2009

Using a DSE XH4248 Data/Voice Splitter as a Data/Data Splitter

While it would make more sense to use a purpose made RJ45 Data/Data splitter you can make do with a Phone/Data Splitter and a custom made CAT-5e cable.

The Phone/Data splitter passes 1, 2, 3, and 6 straight through, so the first part of the Data/Data splitter is easy (naturally).

The phone part maps 4, 5, 7, and 8 to 4, 5, 3, and 6 respectively.

I made a custom cable to map the phone pins back to the data pins where:

  • Pin 1 (orange white) goes to Pin 3
  • Pin 2 (orange) goes to Pin 6
  • Pin 3 (green white) goes to Pin 5
  • Pin 4 (blue) goes to Pin 2
  • Pin 5 (blue white) goes to Pin 1
  • Pin 6 (green) goes to Pin 4
  • Pin 7 (brown white) goes to Pin 7
  • Pin 8 (brown) goes to Pin 8

Expressed as pins:

  • Pin 1 (blue white)
  • Pin 2 (blue)
  • Pin 3 (orange white)
  • Pin 4 (green)
  • Pin 5 (green white)
  • Pin 6 (orange)
  • Pin 7 (brown white)
  • Pin 8 (brown)