On 29 Nov 2005 12:41:37 -0800, "jim_in_sussex"
wrote:

About to instal broadband. The BT terminal is at the top of the house
in an attic, whilst the wireless router will be on the ground floor.
It is planned to supplement the wireless channel with direct CAt5
cabling to some rooms.

There will be a master filter just after the BT terminal & the existing
telephones will branch out from there.

The plan is run the unfiltered (ADSL) telephone (AB) line downstairs to
the router using CAT5 cable.


Q1 Assuming that is OK, which are the correct colours to use in the
CAT5 cable?


The first pair used is normally the blue.

Peter Parry's site has more details

http://www.wppltd.demon.co.uk/WPP/Wi...telephone.html




Q2 Is it correct that each RJ45 socketed ethernet channel on the router
only require 3 wires ? If so, can the unused 6 wires in the CAT5 cable
be used to feed a RJ45 socket to the router? - if so, which cable
colours carry the signals?

Ethernet requires 4 wires, so this would leave two pairs unused.

You might get away with what you are suggesting, but it is bad
practice to mix services in one cable. It might not cause a problem
at 10Mbits, but if the link is set or negotiates to 100Mbit, then
there is a fair chance that the ethernet will run unreliably.

It is best to use one cable for each service and to keep them
separate. Run more cables if needed - the cable is very cheap.



ie like this:

master
BT master ----ADSL filter --unfiltered signal-[CAT5
cable]-------------------RJ11 -------router
I
socket
I
I------filtered telephone lines[existing
telephone cabling]




RJ45 ------[CAT5 cable}--------------- RJ45
--[patch lead]---- router
wall socket wall socket



As this apparently leaves spare wires, would it be possible to feed
the filtered telephone line down this same piece of CAT5?


also any comments on practicality most welcome

TIA

--

..andy