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What is your BB Line Attenuation?

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  • 05-10-2007 11:21pm
    #1
    hamster
    Registered Users Posts: 1,766 ✭✭✭


    Just curious - As question asks what is your BB Line Attenuation?

    Let me start:

    Eircom BB Waterford Rural location: 37/21 dB


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    #2
    towel401
    Closed Accounts Posts: 2,917 ✭✭✭towel401


    10/8dB - i'm about 200 meters away from the Killavullen exchange

    but I still have problems with my line - SNR goes through the floor most nights and approaches the danger zone, disconnects sometimes


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    #3
    AlmightyCushion
    Moderators, Education Moderators, Technology & Internet Moderators Posts: 35,078 Mod ✭✭✭✭AlmightyCushion


    Mine are 36/22 dB. I'm with Eircom on the Sligo HPO exchange. I take it the lower this is the better. Is this true?


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    #4
    BloodSugarSex
    Closed Accounts Posts: 353 ✭✭BloodSugarSex


    24/13 dB - i live in drogheda and im on eircom, never had a problem with eircom bb, its very reliable


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    #5
    hamster
    Registered Users Posts: 1,766 ✭✭✭hamster


    AlmightyCushion wrote:
    Mine are 36/22 dB. I take it the lower this is the better. Is this true?

    Figures in brackets have been shown to provide a stable service in practice.
    * Attenuation - How much signal is lost on the line
    (should be <56 dB downstream, 37 dB upstream)

    Looking at wiki.

    Interesting so far... a neighbour of mine has a fairly high value 50+ and was considered borderline.


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    #6
    Pacifico
    Closed Accounts Posts: 5,115 ✭✭✭Pacifico


    51/31 unfortunately

    Sucks really :(


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    #7
    AlmightyCushion
    Moderators, Education Moderators, Technology & Internet Moderators Posts: 35,078 Mod ✭✭✭✭AlmightyCushion


    Cheers hamster.


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    #8
    BloodSugarSex
    Closed Accounts Posts: 353 ✭✭BloodSugarSex


    so which is better, higher or lower?


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    #9
    hamster
    Registered Users Posts: 1,766 ✭✭✭hamster


    BloodSugarSex wrote:
    so which is better, higher or lower?

    How much signal is lost on the line - I guess the lower the better. My connection in Dublin has a lower value than down in the country. :)

    Anyone know of a definite borderline case where it cuts off and comes back on? I wonder when this value becomes critical.


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    #10
    Sponge Bob
    Banned (with Prison Access) Posts: 25,234 ✭✭✭✭Sponge Bob


    ye are looking at the incomplete picture

    on a netopia go to expert mode > diagnostics and line stats

    post the FULL diagnostic in including the MARGIN

    a margin under 10 is dodgy and under 8 is disconnect and crcville


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    #11
    BloodSugarSex
    Closed Accounts Posts: 353 ✭✭BloodSugarSex


    Sponge Bob wrote:
    ye are looking at the incomplete picture

    on a netopia go to expert mode > diagnostics and line stats

    post the FULL diagnostic in including the MARGIN

    a margin under 10 is dodgy and under 8 is disconnect and crcville

    there is no option in diagnostics for line stats, its just a test for connection problems :confused:

    EDIT:

    have it now

    SN Margin (dB) 31.00 12.50
    Line Attenuation (dB) 24.50 13.00

    is this dodgy?


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    #12
    Sponge Bob
    Banned (with Prison Access) Posts: 25,234 ✭✭✭✭Sponge Bob


    god no , thats great , massive margin.

    now try the Dream On This Is Fukin Ireland Test and post that back :D


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    #13
    BloodSugarSex
    Closed Accounts Posts: 353 ✭✭BloodSugarSex


    Sponge Bob wrote:
    god no , thats great , massive margin.

    now try the Dream On This Is Fukin Ireland Test and post that back :D

    how do i find the noise margin?


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    #14
    Sponge Bob
    Banned (with Prison Access) Posts: 25,234 ✭✭✭✭Sponge Bob


    you told us already , your margin is 31 and your attentuation is 24.5 , it only wants the 2 download values.


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    #15
    BloodSugarSex
    Closed Accounts Posts: 353 ✭✭BloodSugarSex


    sorry :o

    We estimate that if using a rate adaptive up to 8Mbps service your maximum line speed will be: 8128Kbps

    If you are on a Max product, that uses the IP Profile system (sometimes called BRAS Data Rate) if you maintain the above line speed for 3 days or more your IP Profile would be set to: 7.15Mbps

    If your service provider uses ADSL2+ we estimate you may manage line speeds of: 19944Kbps
    With ADSL2+ the maximum IP throughput is likely to be around: 17650Kbps

    this any good?


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    #16
    Sponge Bob
    Banned (with Prison Access) Posts: 25,234 ✭✭✭✭Sponge Bob


    Yes, 17.6mbits is good .


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    #17
    BloodSugarSex
    Closed Accounts Posts: 353 ✭✭BloodSugarSex


    Sponge Bob wrote:
    Yes, 17.6mbits is good .

    its a pity eircom doesnt have a 17mbit package :D


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    #18
    Sponge Bob
    Banned (with Prison Access) Posts: 25,234 ✭✭✭✭Sponge Bob


    well ADSL2+ is about the best technology ever likely to be widely available.

    The 5 big cities will get VDSL2+ sometime ....end of the decade maybe .


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    #19
    hamster
    Registered Users Posts: 1,766 ✭✭✭hamster


    Nice to know I have some niggle room for better rates.... I really did think I was marginal going back. :)

    stats.png


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    #20
    BloodSugarSex
    Closed Accounts Posts: 353 ✭✭BloodSugarSex


    does ireland only have ADSL? we really need better broadband in this country, 230kb/s is not enough for me to download a file, im very impatient! the japanese have great a broadband service, around 17mbit/s


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    #21
    Sponge Bob
    Banned (with Prison Access) Posts: 25,234 ✭✭✭✭Sponge Bob


    the Japanese have 100mbits , 17mbits is a bit slow and old fashioned for them


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    #22
    BloodSugarSex
    Closed Accounts Posts: 353 ✭✭BloodSugarSex


    Sponge Bob wrote:
    the Japanese have 100mbits , 17mbits is a bit slow and old fashioned for them

    wow ive really fallen behind the times!


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    #23
    towel401
    Closed Accounts Posts: 2,917 ✭✭✭towel401


    BloodSugarSex wrote:
    wow ive really fallen behind the times!


    and these are symmetric lines, or at least have decent upload speeds


    none of this piddly upload rates that are only just good enough to send ACK packets & your credit card details to some online rip off web service. no japanese/korean lines are actually good for something. apparently slovakia and a few other countries have good lines for cheap too.


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    #24
    hbr
    Closed Accounts Posts: 760 ✭✭✭hbr


    hamster wrote:
    Just curious - As question asks what is your BB Line Attenuation?

    24/13 dB Eircom 2Mb. Mahon, Cork City.


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    #25
    bubonicus
    Registered Users Posts: 715 ✭✭✭bubonicus


    SN Margin (dB) 30.00 17.00
    Line Attenuation (dB) 10.00 5.50

    :)


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    #26
    partypiper
    Closed Accounts Posts: 63 ✭✭partypiper


    How does this stack up to others out there am i lucky or unlucky??????????


    We estimate that if using a rate adaptive up to 8Mbps service your maximum line speed will be: 8128kbps

    If you are on a Max product, that uses the IP Profile system (sometimes called BRAS Data Rate) if you maintain the above line speed for 3 days or more your IP Profile would be set to: 7.15mps

    If your service provider uses ADSL2+ we estimate you may manage line speeds of: 22599Kbps
    With ADSL2+ the maximum IP throughput is likely to be around: 19999Kbps

    Downstream Upstream
    Max Allowed Speed (kbps) 8123 828
    SN Margin (dB) 19.00 14.10
    Line Attenuation (dB) 15.50 6.00
    CRC Errors 6 0


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    #27
    AlmightyCushion
    Moderators, Education Moderators, Technology & Internet Moderators Posts: 35,078 Mod ✭✭✭✭AlmightyCushion


    20mbps on adsl2 is very good.


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    #28
    MickyJoe
    Registered Users Posts: 83 ✭✭MickyJoe


    S/N ratio (SNR) - the lower the worse - ratio of inherent noise on the line and level of DSL signal (or vice versa)

    Attenuation - the higher the worse - loss of signal between exchange and your router (modem ..)

    There has been posts around that give an idea how to interpret these figures.


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    #29
    spurious
    Moderators, Category Moderators, Education Moderators Posts: 27,196 CMod ✭✭✭✭spurious


    Downstream Rate: 9214 K bps
    Upstream Rate: 608 K bps
    Downstream Margin: 7 db
    Upstream Margin: 17 db
    Downstream Line Attenuation: 31
    Upstream Line Attenuation: 16

    Smart on Summerhill 2 exchange in Dublin.


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    #30
    AlmightyCushion
    Moderators, Education Moderators, Technology & Internet Moderators Posts: 35,078 Mod ✭✭✭✭AlmightyCushion


    spurious wrote:
    Downstream Rate: 9214 K bps
    Upstream Rate: 608 K bps
    Downstream Margin: 7 db
    Upstream Margin: 17 db
    Downstream Line Attenuation: 31
    Upstream Line Attenuation: 16

    Smart on Summerhill 2 exchange in Dublin.

    I want. :(


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    #31
    delly
    Moderators, Home & Garden Moderators, Recreation & Hobbies Moderators Posts: 7,683 Mod ✭✭✭✭delly


    After waiting for so many years I eventually got Eircom BB and am happy to post my fine attenuation of 9/4 dB.


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