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ADSL line filter

Discussion in 'Hobby Electronics' started by eltan, Oct 29, 2004.

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  1. eltan

    eltan Guest

    Hi all,

    What is the best connection setup for ADSL line filter (micro) that come
    with Netcomm modem?

    Currently, two telephone, Phone 1 & Phone 2 is connected to a single
    telephone line using double adaptor. The telephone line is then splited
    again using double adaptor, one for Phone 2 and the other for the ADSL

    Currently, the ADSL miroline filter is connected between the Phone 1 and
    main line.

    So, where do I connect the ADSL line filter?

    Thanks in advance.
  2. Martin

    Martin Guest

    You need another filter for the other phone, then put a filter before each
    phone (but NOT before the modem!!)
  3. Rob

    Rob Guest

    Just remember its a clear line to the ADSL modem. The phones have a
    filter before the phone. You may need a splitter to start - this is
    clear to the modem and filter to the phone.
  4. eltan

    eltan Guest

    Okay, let me clearify my setup, there is only one active phone line
    installed in my place. Two phones is connected to this active line, but
    ADSL modem and Phone 2 is connected together to the splited active phone
    line. I have only 1 line filter, but can get another one if required.

    Diagram of setup....

    ____B__________ Phone 1
    Active line _____A________/
    \ ___D___ Phone
    \________ Adsl

    Currently, the line filter is connected in position A

    So, I'll need to install line filters at position B and D?

    Thanks in advance.
  5. Ken Taylor

    Ken Taylor Guest

    No filter at A or D, just C and B. You'll notice that the filter (probably)
    has an input, and two outputs marked 'phone' and 'ADSL'. The ADSL output
    goes *only* to the ADSL modem.

  6. Colin

    Colin Guest

    B and D only need micro-filters.

    Forget the extra socket if you have a splitter. It will be better to have
    the line straight to the modem.
  7. Chas

    Chas Guest

    You need a filter at B and another at D. Remove the filter from A.
  8. Ken Taylor

    Ken Taylor Guest

    <sigh>..... like Colin and Chas said. My sleepy goof.

  9. eltan

    eltan Guest

    okay, I got it.

    Thanks all.


  10. Martin

    Martin Guest

    Of course your other option (which avoids the 2nd filter) would be:

    _______________________ ADSL Modem
    __________________/ _______ Phone 1
    \_______ Phone 2

    You just need to remember that the modem needs direct access to the phone
    line but each phone needs to go thru a filter...
  11. Michael

    Michael Guest

    Yes, and NOT at A
  12. eltan

    eltan Guest

    Thanks Martin, but the ADSL modem have to connect to the same line as phone
    2 because its in the wall cavity.

  13. Rob

    Rob Guest

    This is where you use a splitter
  14. eltan

    eltan Guest

    thanks, problem solved when I connected the second mirofilter to phone 2.

    By the way, the line to phone 2 is in the wall cavity.


  15. Rob

    Rob Guest

    and this is where you get a filter or splitter that can be hard wired.
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