ADSL Help SNR & Errors

Voltage

Well-known member
  • Feb 6, 2012
    21,722
    1
    15,120
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    මචන්ලා මේ ADSL stats ටික බලල කියපන්කෝ මේක අවුල්ද නැද්ද කියල

    Downstream Upstream
    SNR Margin (0.1dB): 100 128
    Attenuation (0.1dB): 305 180
    Output Power (dBm): 19.0 11.5


    idle ඉන්නකොට අවුලක් නැ. Connection එක පාවිච්චි කරනකොට මාර විදියට packets drop වෙනවනේ ... මං SLT handoff point එකේ ඉදල තියෙන cables ඔක්කොමත් අලුතෙන් දැම්මා. ඒත් එහෙමමයි නේ බන්..


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    මේ දැනට error count එක (router එක on කරල තත්පර 801 කට තමයි මේ)
    downstream upstream
    HEC Errors: 443 0
    OCD Errors: 0 0
    LCD Errors: 0 0
    CRC Errors: 35 0
    FEC Errors: 112 0

    Total ES 16 0


     
    Last edited:

    Voltage

    Well-known member
  • Feb 6, 2012
    21,722
    1
    15,120
    113
    10db downstream madi ban attainable rate kohomada ?

    Attainable rates නම් එච්චරම අවුලක් නැ බන්

    down up
    SNR Margin (0.1dB): 122 126
    Attenuation (0.1dB): 305 180
    Output Power (dBm): 19.0 12.0
    Attainable Rate (Kbps): 22808 1235
    Rate (Kbps): 17407 1023
    D (interleave depth): 1 1
     

    Silly point

    Well-known member
  • Apr 7, 2011
    23,424
    4,830
    113
    loops dala wadi ban ekai case eke.. SLT wala puduma wenna deyak na.. nikan hithahanko public ip ekak kochchara ports kadanawa athida kiyala :baffled:
     

    msurangag

    Member
    Apr 27, 2011
    873
    100
    0
    Screenshot_2016_08_21_22.jpg


    මේක මගේ ඩ්‍රොප් වීමක් නම් නැහැ.ඔයාගේ නම් snr එක මදි හොදටම :(
     

    Kudnadun

    Well-known member
  • Feb 21, 2009
    2,239
    376
    83
    ...මූදුකරේ...
    මගේ පරණ Note එකක්..
    Code:
    Signal-to-noise ratio (SNR) is defined as the power ratio between a signal (meaningful information) and the background noise (unwanted signal)
    
    SNR = signal / noise
    
    6dB or below SNR is bad, you will experience no sync, or intermittent sync problems
    7dB-10dB is fair but does not leave much room for variation in conditions
    11dB-20dB is good with little or no sync problems (if no large variation)
    20dB-28dB is excellent
    29dB or above is outstanding
    
    Line attenuation is a measure of how much the signal has degraded between the DSLAM and the modem.
    This is largely a function of the distance from the exchange.
    The lower the dB, the better for this measurement.
    Attenuation is logarithmic and each 3dB of attenuation halves the strength of the signal power received.
    
    20dB and below is outstanding
    20dB-30dB is excellent
    30dB-40dB is very good
    40dB-50dB is good
    50dB-60dB is poor and may experience connectivity issues
    60dB or above is bad and will experience connectivity issues

    SNR%20%26%20Attenuate.JPG


    ඔය ගෙදර SLT connection එක..
    ඕක නම් ඩ්‍රොප් වෙන්නේ එහෙමත් වෙලාවක තමා..
     

    රෝසි ආච්චි

    Well-known member
  • Dec 10, 2011
    10,859
    23,487
    113
    මගේ පරණ Note එකක්..
    Code:
    Signal-to-noise ratio (SNR) is defined as the power ratio between a signal (meaningful information) and the background noise (unwanted signal)
    
    SNR = signal / noise
    
    6dB or below SNR is bad, you will experience no sync, or intermittent sync problems
    7dB-10dB is fair but does not leave much room for variation in conditions
    11dB-20dB is good with little or no sync problems (if no large variation)
    20dB-28dB is excellent
    29dB or above is outstanding
    
    Line attenuation is a measure of how much the signal has degraded between the DSLAM and the modem.
    This is largely a function of the distance from the exchange.
    The lower the dB, the better for this measurement.
    Attenuation is logarithmic and each 3dB of attenuation halves the strength of the signal power received.
    
    20dB and below is outstanding
    20dB-30dB is excellent
    30dB-40dB is very good
    40dB-50dB is good
    50dB-60dB is poor and may experience connectivity issues
    60dB or above is bad and will experience connectivity issues

    SNR%20%26%20Attenuate.JPG


    ඔය ගෙදර SLT connection එක..
    ඕක නම් ඩ්‍රොප් වෙන්නේ එහෙමත් වෙලාවක තමා..

    meke yako speed eka 1mb ne :lol: ekai ochchara snr wadi
     

    MalindhaDR

    Member
    Aug 13, 2016
    1,962
    162
    0
    මගෙත් ඉස්සර සෑහෙන්න ඩ්‍රොප් උනා මචන්
    පස්සෙ උන්ට කිව්වම උන් ඇවිත් චෙක් කරලා බලලා තඹ කූරක් බැස්සුවා අපේ වත්ත ඇතුලෙන්, ඒක පෝන් එකේ අර්ත් එකට දැම්මට පස්සෙ ඩ්‍රොප් වෙන එක නතරම උනා
    උඹත් උන්ට කියලා බලපන්, උන් ඇවිත් මොනා හරි කරයි

    d4692ea8b5724df0a2c838855c084942.png
     

    msurangag

    Member
    Apr 27, 2011
    873
    100
    0
    මගෙත් ඉස්සර සෑහෙන්න ඩ්‍රොප් උනා මචන්
    පස්සෙ උන්ට කිව්වම උන් ඇවිත් චෙක් කරලා බලලා තඹ කූරක් බැස්සුවා අපේ වත්ත ඇතුලෙන්, ඒක පෝන් එකේ අර්ත් එකට දැම්මට පස්සෙ ඩ්‍රොප් වෙන එක නතරම උනා
    උඹත් උන්ට කියලා බලපන්, උන් ඇවිත් මොනා හරි කරයි

    d4692ea8b5724df0a2c838855c084942.png

    එහෙම සීන් එකක් තියේද ?
    එකෙන් snr එකට බලපෑමක් තියේද ?
    අපේ නම් ගෙවල් ලග MSAN එකක් ගැහුවා .ඊට පස්සේ වැඩේ ගොඩ :)
     

    sumrath1998

    Junior member
  • Feb 18, 2016
    44
    7
    8
    මචන්ලා මේ ADSL stats ටික බලල කියපන්කෝ මේක අවුල්ද නැද්ද කියල

    Downstream Upstream
    SNR Margin (0.1dB): 100 128
    Attenuation (0.1dB): 305 180
    Output Power (dBm): 19.0 11.5


    idle ඉන්නකොට අවුලක් නැ. Connection එක පාවිච්චි කරනකොට මාර විදියට packets drop වෙනවනේ ... මං SLT handoff point එකේ ඉදල තියෙන cables ඔක්කොමත් අලුතෙන් දැම්මා. ඒත් එහෙමමයි නේ බන්..


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    මේ දැනට error count එක (router එක on කරල තත්පර 801 කට තමයි මේ)
    downstream upstream
    HEC Errors: 443 0
    OCD Errors: 0 0
    LCD Errors: 0 0
    CRC Errors: 35 0
    FEC Errors: 112 0

    Total ES 16 0



    Interference tiyenawa wage. Sarungal yawana ewun telephone wire wala nul patalawala wires kapuwamath oka wenna puluwan. SLT wires expose wunama oxide bandila drop wenna gannawa.

    Handoff point eken 2m wage cable ekak mdem ekata direct gahala, stats test karala balala SLT katha karapan. Un awith oka hadanawa.
     

    MalindhaDR

    Member
    Aug 13, 2016
    1,962
    162
    0
    එහෙම සීන් එකක් තියේද ?
    එකෙන් snr එකට බලපෑමක් තියේද ?
    අපේ නම් ගෙවල් ලග MSAN එකක් ගැහුවා .ඊට පස්සේ වැඩේ ගොඩ :)
    උන් නම් කිව්වෙ ඒක තමා සීන් එක කියලා