SNR & Attenuation levels on your ADSL line

Discussion in 'Broadband' started by Stuart, Jul 16, 2003.

  1. Stuart

    Stuart Guest

    After recent lighning experiences I decided to try re-routeing my ADSL
    router via phoneline ant-surger filter.

    The attenuation has increased from 18/11db(downstream/upstream) to 19/12db.
    SNR held steady at 18.5db.

    How do these levels compare with others (measured on a D-Link DSL504 less
    than 1km from exchange).

    The 504 was the only item attached to a phoneline that didn't sustain
    damage - so it must be pretty well defended within.

    Any downside to this 'belt & bracers' approach?
     
    Stuart, Jul 16, 2003
    #1
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  2. Well, those levels you indicate are very low (ie, very very good for
    DSL)
     
    HRH The Lord Buckley, Jul 16, 2003
    #2
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  3. Stuart

    johnydeath Guest

    Mine is 69/31 and SNR 3.5dB
    Not a mistake - true, and at 7km away from the exchange - Smokin!

    I know the max atten but does BT quote the worst SNR for good BB?
     
    johnydeath, Jul 17, 2003
    #3
  4. Dunno, but don't tell BT about your installation!

    What speeds are you getting?

    Rob.
     
    Robert Woolley, Jul 20, 2003
    #4
  5. Stuart

    johnydeath Guest

    Depends on times, smallest pipe the data has to pass through etc. I
    regularly get 45-52k for MP3s, but at least it stays synched.
    Not too many errors either - cut and paste the router details, hope it comes
    out. I get 4dB SNR during the day!!!
    Downstream Upstream
    Line Status ADSL Link Speed 576 kbps 288 kbps
    SNR 4.0 dB -
    ATEN 69 dB 31 dB
    Line Error ADSL layer FEC 9 0
    CRC 18 969
    ATM layer HEC 8 487
    Frame Counter 5445847 5733144


    Loop Distance: About 14 K ft.
     
    johnydeath, Jul 21, 2003
    #5
  6. I'm about 1km from the exchange - cable run is 1.9km

    from my router:

    Solwise adsl> show perf
    Downstream :
    Capacity Occupation : 11 %
    Noise Margin : 29
    Attenuation : 36
    Output Power : 12
    Upstream :
    Capacity Occupation : 37 %
    Noise Margin : 25
    Attenuation : 31
    Output Power : 17

    Rob.
     
    Robert Woolley, Jul 23, 2003
    #6
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