Broadband Sync speed vs actual down speed?

Discussion in 'Broadband' started by Herb, Aug 29, 2007.

  1. Herb

    Herb Guest

    I am paying for ADSL Max (upto 8mb) and my line syncs around 3872 kbps all
    the time. Problem is the download speed is 1957 kbps on speed tests and
    never goes above 2mb ever. What speed should I be expecting at this sync
    and why is the average download speed so low? The line is with BT, the
    broadband is with Virgin.
    Herb, Aug 29, 2007
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  2. Herb

    alexd Guest

    Run a BT speed test, and see what it thinks your IP profile is.
    alexd, Aug 29, 2007
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  3. Herb

    jdr.smith Guest

    Try getting up early in the morning and doing a speed test

    ...then try doing another one say around 7pm in the evening..

    ...then wonder why there is a huge difference..

    jdr.smith, Aug 29, 2007
  4. Herb

    Herb Guest

    There isn't a difference its around 2mbit all the time...... But the line
    syncs higher.
    Herb, Aug 29, 2007
  5. Herb

    Herb Guest

    Where would I do that?
    Herb, Aug 29, 2007
  6. Herb

    Gio Guest

    Gio, Aug 29, 2007
  7. Herb

    alexd Guest

    The IP profile will not vary with time of day.
    alexd, Aug 29, 2007
  8. You should ascertain what your current line rate is. Your ISP should
    be able to give you this information. Your download speed cannot
    exceed this line rate irrespective of your sync rate.

    The speed you should be expecting depends on what your contract with
    your ISP specifies. It may specify that you have a maximum line rate
    of, for example, 2meg. Though I would suspect that if your contract
    really is for an 'up to 8meg' service you should expect at ~ 3meg.
    with the given sync.

    For example my sync is currently 1984kpbs and my line rate,
    displayable on my ISP's connection details is 1728kbps.
    (I am a long way from the BT exchange). A speed test usually gives me
    a figure of ~1.1 to 1.4 depending who I use for the speed test and
    when it is run.
    brightside S9, Aug 30, 2007
  9. Herb

    Herb Guest

    These are the results:

    The speed test has completed on test server for user
    01xxxxxxxxx and you have downloaded a 1.7Mb file at a speed of

    1785 kilo bits per second (Kbps), your service bandwidth will have been
    quoted to you in kilo bits per second.

    Your IP address is xx.xx.xx.xx, your browser is reported as being Microsoft
    Internet Explorer 6.0 and is running on Windows XP.

    BT would regard the speed ranges shown below as normal service:

    For 250kbps End Users speeds between 50 - 250kbps.
    For 500kbps End Users speeds between 100 - 500kbps.
    For 1000kbps End Users speeds between 200 - 1000kbps.
    For 2000kbps End Users speeds between 400 - 2000kbps.

    You may now disconnect from the speed test account (click 'disconnect' in
    your internet connection window) and if you wish to regain normal access to
    the internet please re-connect to your ISP using your usual username and

    Please note that test results may vary according to varying traffic in the
    network. If you continue to experience slower throughput when logged in to
    your ISP, this may be due to a slow internet site or high traffic levels
    beyond the BT Wholesale Network. Please report this situation to your ISP's
    Herb, Aug 30, 2007
  10. Herb

    alexd Guest

    Interesting. When I run a BT speed test here, it says "The IP profile for
    your line is - 7150kbps". This is on a Max Premium line. Perhaps the output
    of the test varies depending on what type of circuit you have?
    alexd, Aug 31, 2007
  11. Herb

    Gio Guest

    I do not think he is running the correct speed test because the report is
    along the lines of as below and the download file size is not stated:-

    Test1 comprises of Best Effort Test: -provides background information.
    IP profile for your line is - 7150 kbps
    DSL connection rate: 448 kbps(UP-STREAM) 8128 kbps(DOWN-STREAM)
    Actual IP throughput achieved during the test was - 4542 kbps

    Gio, Aug 31, 2007
  12. Herb

    alexd Guest

    On the contrary, I think he is running the right line test, because I've
    seen the results he described in screenshots people have sent me.
    alexd, Aug 31, 2007
  13. Herb

    Gio Guest

    Do you have the url ?
    Gio, Aug 31, 2007
  14. Herb

    Eeyore Guest

    About 3500 kbps should be possible.

    Virgin have probably 'capped' the download speed.

    Eeyore, Sep 1, 2007
  15. Herb

    Eeyore Guest

    You missed the bit where it gave you your PROFILE ! That's the important bit.

    It'll say something like this ...... (from a test result I had)

    "Test1 comprises of Best Effort Test: -provides background information.
    IP profile for your line is - 6500 kbps
    DSL connection rate: 448 kbps(UP-STREAM) 7616 kbps(DOWN-STREAM)
    Actual IP throughput achieved during the test was - 5513 kbps "

    That's the important bit.

    Eeyore, Sep 1, 2007
  16. Herb

    Eeyore Guest

    Go here and see the result.

    It's pretty reliable at reporting close to your real maximum speed in my
    experience. Although ...... with Virgin ?

    Eeyore, Sep 1, 2007
  17. Herb

    Eeyore Guest

    But only by whatever method you're measuring it which you haven't stated. Speed
    tests are not all created equal and some are downright misleading.

    Eeyore, Sep 1, 2007
  18. Herb

    alexd Guest

    For what?
    alexd, Sep 1, 2007
  19. Herb

    Gio Guest

    Sorry I should have said, the different BT speed test site.
    Gio, Sep 1, 2007
  20. Herb

    alexd Guest

    As far as I know, there's only one. What I was alluding to in
    <> was that perhaps the format of the speed test
    results page varies depending on whether or not you have a rate-adaptive
    [aka Max] or a fixed-rate line. The test I ran on a Max Premium line gave
    me an IP profile. A customer whom I support sent me a screenshot of a speed
    test result ran from his 2M line, and it was formatted in the same way
    yours was, giving fault rates for 0.5M, 1M and 2M. Alas, I don't have
    access to a fixed-rate line I can run a BT speed test on to test this
    hypothesis myself. The other possibility is that the BT speed test is
    actually hosted at the exchange one is connected to, and the output depends
    on what firmware is installed at the exchange. This seems unlikely,

    The implication of what I said above is that your line is 2M fixed rate and
    not Max.
    alexd, Sep 1, 2007
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