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Cat5e detects phone but not ethernet

Last response: in Networking
October 19, 2011 7:09:28 AM

I have a house with a Leviton Enhanced Infraestructure Platform that distributes cat5e wiring to multiple outlets throughout the house. The problem is: Some cables will not transmit the Ethernet (internet) signal, but when I connect a phone line to it, it works. So the cable integrity is fine, but somehow connecting the internet router to it will not make it work. Suggestions?
October 19, 2011 7:26:18 PM

A bit confused here, phone lines are not ethernet unless you are using IP phones. So an analog phone jack not working with eithernet is not an issue.
October 19, 2011 8:11:48 PM

Cat5 uses all 8 wires in the cable in pairs (T568A Wiring)
Wire No Colour.
1 Pair 3 Wire 1 white/green
2 Pair 3 Wire 2 green
3 Pair 2 Wire 1 white/orange
4 Pair 1 Wire 2 blue
5 Pair 1 Wire 1 white/blue
6 Pair 2 Wire 2 orange
7 Pair 4 Wire 1 white/brown
8 Pair 4 Wire 2 brown


Telephone cable only uses 2 wires (3 sometimes for a bell wire)

When you plug an RJ11 analogue phone into the socket it will use the middle pair. Pair 1 ie the blue and white/blue wires.

If you have no ethernet the other wires are faulty or not properly terminated.