Can someone explain master socket for me?

Discussion in 'Broadband' started by MM, Aug 26, 2006.

  1. MM

    MM Guest

    I moved into this new build property 18 months ago. There was no phone
    connection at all. I ordered a phone. Three weeks later (Christmas got
    in the way, I suppose) BT came and connected the phone. The BT
    engineer removed the socket in the hall and enabled something so that
    all other sockets in the house are enabled. I can access the phone or
    plug in a modem via any socket. He intimated that this was an 'extra'
    that I'd normally pay 'extra' for, but all he wanted in return was a
    cup of tea.

    If I get broadband, will I still be able to use any socket either for
    phone or broadband?

    Where does "master socket" figure in all of this?

    Do I have one already? How could I tell?

    Somewhere I read that a "central splitter" could be needed to separate
    the ADSL signal from the phone signal. Would that apply in my case?
    How could I tell?

    Is there a novice's guide anywhere on the internet that describes the
    whole palaver of converting/connecting to broadband in the UK?


    MM, Aug 26, 2006
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  2. Thus spaketh MM:

    The master socket will be the socket that the incoming wiring is
    connected to first, other sockets will be extensions/slaves of this, the
    master socket has a capacitor to provide ringing for phones that don't
    have their own ringing capacitor, the extensions get their ringing from
    being wired to the master (pin 3).

    You can use any socket for broadband, though on very ropey lines it
    sometimes only reliably works from the master socket.

    The filter or as some people call them splitters, just filter the
    broadband noise away from the 'speech' side of the line, some call them
    splitters as many have a connection for broadband (unfiltered) and a
    connection for your phones/fax machine/Sky box (filtered).

    You need to use a filter on any socket that has a phone/Sky Box/fax
    machine etc on it.
    {{{{{Welcome}}}}}, Aug 26, 2006
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  3. MM

    MM Guest

    So it will go something like this:

    1. I order broadband (e.g. from Zen).

    2. Zen sends me an ADSL modem or router, or I buy one separately.

    3. In due course the line is converted to ADSL.

    4. No BT engineer needs to visit.

    5. I install the ADSL modem/router in the room where the PC is and
    connect the latter via the new modem to the phone extension socket in
    that room.

    6. Install software etc...

    7. For the phone in the hall I need to obtain a splitter from

    8. If I want to connect a second phone in another room I'll need
    another splitter.

    Is that more or less the procedure?


    MM, Aug 26, 2006
  4. Thus spaketh MM:
    Yes, depending on who you sign up with you will be sent a modem, router
    or you buy one.
    Yes, they just fiddle about at the exchange.
    If there are no problems, a BT engineer shouldn't have to visit.
    Yes, just pop the spliter/filter into the phone socket, you plug your
    modem/router into the the RJ11 socket on the filter and the phone if you
    wish into the BABT socket on the spliter/filter.
    If you are issued with a USB modem then I'd advise only install the
    modem drivers, don't bother with any other junk they put on the disc.

    If you have a router or Ethernet modem, then don't install any software,
    just plug in to ethernet port, switch on and then go into the setup page
    of the router to add your unsername and password for your broadband
    Usually you are provided with a couple of filters
    Yes, they are used to remove any unwanted noise from being heard when
    you are on the phone that might be off-putting.
    That it is.
    No worries.
    {{{{{Welcome}}}}}, Aug 26, 2006
  5. MM

    Alan Guest

    Alan, Aug 26, 2006
  6. Thus spaketh {{{{{Welcome}}}}}:
    Just to add, if you can, go down the router route, usb modems are dodgy
    at best.
    {{{{{Welcome}}}}}, Aug 26, 2006
  7. MM

    MM Guest

    MM, Aug 26, 2006
  8. MM

    Old Codger Guest

    Along with the info provided by Welcome and Alan you mjight find the
    following links useful:

    Master sockets, filters and wiring.

    Note: The Clarity filtered NTE5 faceplate also includes a facility to wire
    in ADSL extensions, in addition to phone extensions.

    and for an explanation of Max DSL (which is probably what you will receive)

    Old Codger
    e-mail use reply to field

    What matters in politics is not what happens, but what you can make people
    believe has happened. [Janet Daley 27/8/2003]
    Old Codger, Aug 26, 2006
  9. MM

    gort Guest

    FFS don't take him down this route!. He has been given the same advice
    many times over in uk.telecom and has ignored it while repeating the same
    question over and over again. Good Luck!

    gort, Aug 26, 2006
  10. MM

    kráftéé Guest

    Of course you are right, but unfortunately, more often than not the
    site electricien will install masters (3/1a typically) at all points
    for some reason or another & this can often cause problems with the
    ADSL. Here again the bell wire by it's very nature (being a longish
    length of unbalanced wire) can also cause problems with ADSL, but
    let's not go looking for problems which aren't already evident....
    Removing the bell wire & making sure that the extensions are extension
    sockets & not master sockets will help more often than not in these
    circumstances, as long as the extensions have been run in the
    appropiate cable (not burglar alarm cable......yes they do use it as
    it's cheaper than telephone cable) & that they haven't used split
    They also do have a slight effect on the ADSL side as well, but as I
    said it is slight & only occcaisionally will that one rear it's ugly
    & above all make sure that the Burglar alarm company puts a filter on
    their feed as close to the master socket as possible (long lengths of
    unbalanced stranded, non filtered cable is not good for your ADSL
    signal). Even had a case recently where I found an illicit burglar
    alarm feed which had been connected to the faceplate (all alarms
    should be connected via a Block 80b). The customer wasn't aware of it
    & the burglar alarm company stated that the alarm wasn't monitored &
    didn't dial out but the fitter had connected it anyway. Remove feed,
    ADSL comes up, tests ok & the customer can get on line & then is hit
    with a bill because the burglar alarm fitter has cocked it up (it
    wasn't the first time either probably won't be the last time as well).
    kráftéé, Aug 26, 2006
  11. MM

    kráftéé Guest

    Ever thought of going dect, it can make things that much simpler in
    that you only have one phone point used. No need for extra filters,
    hell you could even disconnected all the non used extensions (the
    wiring to which could give problems). Far simpler but possibly a
    little more expense that you didn't need at this time...
    kráftéé, Aug 26, 2006
  12. MM

    Roger Mills Guest

    In an earlier contribution to this discussion,
    Yes, that is the default, and the way in which it works in many cases.

    HOWEVER, there *are* cases - and yours may well be one such - where this
    doesn't work, typically when noise is picked up on your extension wiring
    which interferes with the ADSL signal and stops your modem or router from
    synchronising with the line.

    In such cases, it is necessary to fit one of those 'central splitters' which
    you mentioned earlier. These usually take the form of a replacement
    faceplate for the master socket, and have two outlet sockets - a filtered
    phone socket for analog equipment, and an unfiltered RJ11 socket for your
    ADSL equipment. Any extension sockets connected to the back of such a
    faceplate will automatically be filtered - so you don't need any additional
    plug-in filters. It also means that you cannot plug your ADSL equipment into
    any old socket - it has to be plugged into the master or into a separate
    *digital* extension run from the master.

    Using a filtered faceplate is technically superior to using plug-in filters
    in every socket as well as being much neater - because it isolates your
    (potentially dodgy) extension wiring from the ADSL signal at source.
    Email address maintained for newsgroup use only, and not regularly
    monitored.. Messages sent to it may not be read for several weeks.
    Roger Mills, Aug 26, 2006
  13. MM

    MM Guest

    What is dect?

    MM, Aug 26, 2006
  14. MM

    MM Guest

    Welcome has given me useful advice without the additional and uncalled
    for "FFS" from you and at least one other. I can do without that,

    MM, Aug 26, 2006
  15. MM

    gort Guest

    You were given useful advice on uk.telecom which you repeatedly ignored
    and acted like a troll.What was different about Welcome telling you to get
    a router and forget USB modems and all the others on uk.telecom inc me who
    told you exactly the same thing?. And don't forget we were all very
    couteous to you at the start until you started repeating the same question
    again and again.

    gort, Aug 26, 2006
  16. MM

    MM Guest

    Oh, dear. I feel like shooting myself now. ;)

    I have a burglar alarm with movement detectors, all prefitted by the
    builder's alarm company (GB Alarms). I also have a bell in the hall,
    although the wire won't, I expect, be too long as it is only a few
    metres from the front door bell push. The main phone socket (the one
    that BT connected up when I ordered a phone after moving in) is on the
    opposite wall to the alarm keypad/bell box.

    One thing you might further clarify for me: Why is it better for ADSL
    if extensions in other rooms are "extension" sockets and not master

    Is there any way I could detect whether a socket is a master socket or
    not? (I can use a screwdriver!)

    Maybe I'll just use BB at the local library - it'd be a lot simpler...

    Anyway, thanks - and to Codger, too. Not forgetting Welcome. I'll
    cogitate a bit and give it some more thought.

    MM, Aug 26, 2006
  17. MM

    Alan Guest

    Digital Enhanced Cordless Telecommunications - digital cordless phones.
    A single base station (with or without answerphone capabilities) plugs
    into a single the phone socket. All phones communicate wirelessly with
    the base station therefore do not require any phone extension sockets.

    I had some problems with my ADSL connection until I removed all the
    telephone extensions to the upper floor of my house and fitted a
    filter[1] close to my master socket. I have an older type master socket
    without the removable front. The 5 DECT phones that I have only require
    a single base station.

    Alan, Aug 26, 2006
  18. MM

    MM Guest

    Thanks, Roger. Who would I get to do this kind of what sounds like
    quite extensive/expensive socket mods? BT?

    MM, Aug 26, 2006
  19. MM

    JW Guest

    You have been offered too much information. Most alarms
    aren't connected to a phone line anyway. Sometimes people
    are just too helpful.

    Your extension sockets are unlikely to be master type,
    though it can happen. Just go ahead and install - most
    installations are straightforward. If you have any
    problems, that would be the time to start asking for advice.
    JW, Aug 26, 2006
  20. MM

    John k Guest

    Nothing wrong with USB modems unless you run them on some old DELL or
    something similar with 256k RAM. I have tested a few out from SAGEM to
    Speedtouch and compared against three different routers - absolutely NO
    difference in speed on 8Mbps.
    I would also advise installing the diagnostic software provided by the ISP
    incase of problems. You get an error code to give to the ISP and it helps
    them diagnose the problem more efficiently. It's done to make things simple
    for the end user.
    If you have some crap computer and a small program in the background makes
    it gring to a halt, or indeed a USB device of any type - it's time to
    upgrade and keep up!

    I am always amazed at the people who quote urban legends such as "usb is no
    good" and don't know a thing about computers apart from what they might
    read. A lot of problems are caused by the user not understanding what to do
    or misdescribing the problem.

    All the BT man did was to connect the wire feeding all the other points in
    to the master socket. They would usually charge extra, but it is something
    you could have done yourself anyway. nice of him!
    John k, Aug 26, 2006
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