[Lancaster] Re: Broadband Problems

[Ken Hough]

Kristof,

Further progress wrt my broadband link.

I think that BT have at last cleaned up the connection and I have done 
some work here so the downstream noise margin is now around 26db and 
remains at this level. Should be OK now, even at busy periods.

The local wiring in my house was loosing me approx 3db. The biggest 
local loss (around 6db) was caused by the modem surge suppressor which 
is part of a Belkin mains socket block. It worked OK with a standard 
modem, but is obviously not OK for ADSL.

Thanks for your help.

Ken Hough


Ken Hough wrote:
> Kristof Van Laerhoven wrote:
> 
>> Hi Ken,
>>
>> these are my settings (see alse the attached screenshot from my router 
>> admin site):
>>
>> attenuation:      24 db     5  db     (down- and upstream)
>> noise margin:   30 db    24 db     (down- and upstream)
>>
>> best,
>>    Kristof.
>>
> 
> Lucky boy!
> 
> The figures for my link are:
> 
> attenuation:       57.5      31.5     (down stream/upstream)
> Noise margin:      16.0      22.0     (downstream/upstream)
>  -- and that's when it's good
> 
> Attenuation remains pretty constant, both ways. Noise margin is the 
> problem. during busy periods, downstream margin can drop to around 10 
> dB. I loose connection at around 12 to 13 dB.
> 
> I've discovered info' via the Internet which suggests that a magin of at 
> least 12 dB is needed.
> 
> The next step is to get BT to do something about it. If not possible, my 
> guess is that a 500 kB link should work.
> 
> Many thanks
> 
> Ken
> 
>