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Thread: Does long and cheap telephone wiring affect Adsl broadband (BSNL) speed and latency?

  1. #1
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    Default Does long and cheap telephone wiring affect Adsl broadband (BSNL) speed and latency?

    I have a broadband connection (BSNL Dataone) which I have been using for the last 2 months without problem.
    Recently I shifted to a different room in my compound, approx 60 m further from my previous room, and moved my telephone line to the new location. I used a mix of copper and aluminum wires, each of about 30m length, to extend the telephone line to the new location. Everything went well with a total of 3 joints in the extension line. The phone is working fine and the modem is connecting to the internet over PPPoE.
    Now for the problem. Whenever I try to surf the net, pages take forever to open. On doing a speed test from Speedtest.net it gives the desired D/L and U/L speeds (0.5 Mbps / 0.25 Mbps) but latency is around the 1500ms mark. If I try to ping the google server or open dns servers the result is same.
    Also when i try to download games in Steam or utorrent the speeds are very good. Around 60 to 100 KBps. But simple webpages like the Google home page take over a minute to open.
    My guess is the latency. But maybe I am wrong.
    Could be the cheap aluminum. Not the modem as i have removed firewalls and tried in bridge mode also.
    So please help me someone.
    Thanking all of you in advance.

  2. #2
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    Try this

    http://www.indiabroadband.net/broadb...onnection.html (How to: get max. speed of a connection)

    Yes, joints can make enough troubles for you. Try talking to the SDE of your exchange. If it was fine earlier, it can be rectified. Call customer care and ask for his number. You can also talk to the line man and ask him to replace the line.

    If possible take the print out of necessary documents and visit the exchange.

  3. #3
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    Check SNR/ATTN data from modem menu ADSL.
    Post details here. This will show CHANGES/effect due to extra
    cable length.60 meters .

    The length of cable from BSNL Junction box can be in Kilometers!( maximum not more than 6 or 7 Km)

    As the extension is done(60 meters) internally by user, SDE cannot be blamed.!
    if all was normal earlier, changing location should not affect surfing.

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    Quote Originally Posted by obiforvo View Post
    I used a mix of copper and aluminum wires, each of about 30m length, to extend the telephone line to the new location. Everything went well with a total of 3 joints in the extension line.
    There is your problem. ADSL, for reasons that are absolutely beyond my comprehension, works over copper.

    The connections won't help either. Get rid of that aluminium, and use one run of copper.

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    3.4.3 Aluminium
    Aluminium has been used in some local loops instead of copper. The resistivity of aluminium is worse than copper, by about 50%, which means it will attenuate the signal more, and thus reduce the coverage of DSL on that line. DSL can still be provided over aluminium, it is the distance that will be limited.
    source:
    Scottish Government: Web page currently unavailable.

    Length of Aluminium wire used here about say 100 feet.
    it is the Gauge of the wire that is used which is important.

    If user has used commercially available aluminium power cable
    Replacing with copper ( single pair RJ11) may improve SNR. details awaited.

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    Thanks, that's a useful link.

    I've seen an aluminium extension fail ADSL, and it was a fairly short one too. When replaced by copper it worked just fine.

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