Re: Best splitter to use

On 2009-06-01, Denis McMahon <denis.m.f.mcmahon@xxxxxxxxxxxxxx> wrote:
Given that whatever I do will involve running Cat5 from the master
socket area to the network hub, I think I have the following options:

a) relocate the modem to the master socket, run ethernet over the the
new cat5.
b) run the dsl over the new cat 5, leave the modem where it is.

(a) is obviously preferred.

I don't think (a) is preferred over (b), either works fine. What
you want to accomplish is a little different.

What you need to do to optimize the ADSL is to carry the ADSL
signals over a single pair of wires from the exchange to your
modem. That is, you need to remove the ADSL signals from all
the wire pairs inside your home other than the pair to the
socket where you'll plug in the modem.

To do this you should install a Master Faceplate Splitter like
the one on this page (linked to in another reply):

http://www.solwise.co.uk/adsl_splitters.htm

Attach the wiring for all phone sockets in the home which will be
used only for voice to the (filtered) punch-down terminals on the
back of the faceplate to keep the ADSL off of them. The only
remaining socket carrying the ADSL will be the RJ11 on the front
of the faceplate.

Once you've done this I think all options for getting the ADSL
to the modem are about equivalent:

(1) Plug the modem directly into the RJ11 in the faceplate with
a standard patch cable (RJ11's on both ends) and run ethernet
over the Cat5 from the modem to where ever the computers are;

(2) Terminate one of the pairs in the Cat5 you are installing with
an RJ11 plug, plug that into the faceplate and put the modem
at the far end of the Cat5 cable (essentially making the Cat5
cable a long patch cable); or

(3) If the existing telephone socket where you'd like to locate
the modem is by itself on a cable which runs back to the
master socket, separate that cable from the rest of your voice
wiring, put an RJ11 on the pair, plug that into the master
socket and plug the modem into the wall socket. The Cat5
cable may then be unnecessary.

I don't think it matters much what kind of patch cable is used
to connect from the master socket to the modem as long as you are
using twisted pair telephony cable. ADSL signals are low frequency
compared to LAN signalling, the Cat5 cable is overkill for ADSL
(but certainly won't hurt) and the difference between fancy shielded
RJ11 patch cables and the flat stuff that came with the modem really
doesn't matter either given the short runs we're talking about.
What does help is getting the ADSL off the branching network of
stubbed pairs which is your home's voice wiring and onto a single
pair run from the (unfiltered) side of the faceplate filter to
your modem. Any option which achieves the latter should work
equivalently well.

Dennis Ferguson
.

Relevant Pages

  • Re: Max ADSL and domestic wiring
    ... Then connect all the xtension cables/socket to the insertion displacement connectors on the back of the new faceplate.If necessary to a new socket next to it. ... Than get a very long RJ11 extension cable and plug your modem directly into the ADSL socket on the front of the master socket. ... You will however always find that wherever you put your 56k modem you will only get slow speeds due to the filters and the fact that the ADSL equipment in the exchange can mess up the residual digital signals that the 56k modems use. ... Is it likely to be reducing my bandwidth? ...
    (uk.telecom.broadband)
  • Re: New ADSL package, set-up/connection problems - HELPPP!!!!!
    ... >> modem and its filter (asked him if this would tell us what we needed to ... >> these modems do not like phone line extension cables, ... > Some problems with ADSL are simple setup errors, ... > of the lights will be called 'sync' light. ...
    (uk.telecom.broadband)
  • Re: Connecting micro filters
    ... whenever you have a problem with an ADSL Internet Connection ... in moving the PC (& ADSL Modem) ... Phone socket is in the hall, PC is in another room leading off ... socket of the micro filter, (nothing in the adsl socket as it won't ...
    (uk.people.silversurfers)
  • Re: ADSL adaptor ok for ordinary RJ11 connection?
    ... VirginMedia landline then, in general, can I use the RJ11 modem ... No - You must use the BT socket for any non-ADSL device. ... plug in voice-band device into the BT socket of the ADSL filter. ...
    (uk.telecom)
  • Re: adsl connection only works from test socket
    ... My adsl router/modem has been working off my extension upstairs in my ... Tried another modem, same problem. ... downstairs to the main NTE5 socket and plugged it in, ...
    (uk.telecom.broadband)