Re: Broadband ADSL Help

["Mark Golledge" <markgolledge@xxxxxxxxxxxxxx>]

Thanks for all the emails.

Have emailed ISP so we'll see what becomes of that (if anything).

Sorry if I didn't make myself clear.

The Netgear router is displaying (in admin settings) downstream connection
speed of 3968kbp/s and upstream of 448kbp/s.

However, when on my laptop I go to www.speedtest.net, the connection speed
comes out at 1914kbp/s and upstream of 373kbp/s.

Not much joy today on line attenuation and noise margin which is 53db and
4db respectively.

Any further thoughts much appreciated,



Mark



On Feb 5, 2008 9:33 AM, Marcus Warrington <marcus.warrington@xxxxxxx>
wrote:

>   I assume when you say "download speeds" you actually mean
the line synch
> speed.
>
> My understanding of all this smoke and mirrors is that you router will
> try and synch the line to obtain a Signal To Noise Ratio (SNR) of
6.5db
> i.e. it can hear 6.5db of signal above the background noise etc. As
the
> line synch speed increases the SNR will decrease and as the line synch
> speed decreases the SNR will increase. Therefore the speed you get
> depends on how good your line is (i.e. how much SNR you have). This is
> all subject to the maximum speed of your ADSL connection, that may
also
> be limited by the exchange DSLAM.
>
> BT also add more confusion to the mix by limiting the maximum
connection
> speed based on how reliably you have connected in the past.. they have
> some acronym for it ..BRAS (?) ..may be worth asking your ISP to have
> this reset.
>
> The fact that the two routers are showing different results is either
> because the Netgear has a much better chipset and can see more SNR
than
> the other one or the line SNR is varying widely and when you
reconnected
> it was much better so got a better connection.
>
> I'm on Be Unlimited using a Netgear834GT and see that my SNR drops
from
> 6.5db during daylight hours to about 3 - 2.5db at night.. I think this
> is quite common for SNR to drop at night and may be to do with more
> electrical activity (street lights etc) near the telephone line? I
> always synch at a better speed if I reconnect during the day (higher
SNR
> available) than if I resynch at night (lower SNR available).
>
> Marcus
>
> ________________________________
>
>
> From: ukha_d@xxxxxxx <ukha_d%40yahoogroups.com> [mailto:
> ukha_d@xxxxxxx <ukha_d%40yahoogroups.com>] On Behalf
> Of Mark Golledge
> Sent: 04 February 2008 21:54
> To: ukha_d@xxxxxxx <ukha_d%40yahoogroups.com>
> Subject: Re: [ukha_d] Broadband ADSL Help
>
> Ok,
>
> I've done some checks. According to speedtest, I'm getting download
> speeds
> of 1946kb/s and upload speeds of 367kb/s. I know that I've previously
> been
> achieving download speeds of 3000kb/s so something is not right there.
>
> Both those speeds are what is being achieved on the laptop (and
desktop
> PC).
>
> However, just gone into Netgear settings and downstream connection
speed
> is
> showing 3488kb/s and upstream 448kb/s.
>
> Any ideas?
>
> Line attenuation is showing 53db downstream and 15.5db upstream and
snr
> is
> showing 3bd downstream and 19db upstream. Line attentuation seems kind
> of
> high and snr low (should be the other way around I think).
>
> Mark
>
> On Feb 4, 2008 9:40 PM, Andy Davies
<dajdavies@xxxxxxx<dajdavies%40gmail.com>
> <mailto:dajdavies%40gmail.com>
> wrote:
>
> > We had problems with our 3Com router and Vodafone, worked fine
when we
> > first moved in and then it would start to be unable to keep an IP
> > address, changed to a Netgear router and everything was fine.
> >
> > I seem to remember seeing something in the Register that there's
a
> > 'known issue' with some routers and the BT DSLAMs which only
comes to
> > light when the DSLAMs are updated.
> >
> > Andy
> >
> >
> > On Feb 4, 2008 7:40 PM, Mark Golledge
<markgolledge@xxxxxxx<markgolledge%40googlemail.com>
> <mailto:markgolledge%40googlemail.com>
<markgolledge%40googlemail.com>>
>
> > wrote:
> > > Hi everyone,
> > >
> > > I've been having some problems with my broadband recently.
About 6
> > months
> > > ago we moved across to Vodafone at Home from BT for
broadband and
> home
> > > phone.
> > >
> > > Al has been fine except over the last few months I've come
across
> more
> > and
> > > more times where my internet connection seems to be dropping
> > occasionally.
> > >
> > > Happened for quite a bit on Saturday to such an extent that
I
> couldn't
> > get
> > > on the internet at all.
> > >
> > > Am using a Router (Netgear DG834G) connected via microfilter
to the
> > phone
> > > line.
> > >
> > > No problems with wireless at all, that stays fine. It is the
ADSL
> light
> > on
> > > the router which keeps dropping and then re-connecting.
> > >
> > > Have checked with Vodafone and they said it was the wireless
but
> advised
> > > them it can't be because the wireles is still connected. No
> recognisable
> > > problem with phone line.
> > >
> > > Any ideas?
> > >
> > > --
> > >
> > > Mark Golledge
> > > E: mark@xxxxxxx <mark%40markgolledge.com> <mailto:
> mark%40markgolledge.com>
> <mark%40markgolledge.com>
> > > W: www.markgolledge.com
> > >
> > >
> > > [Non-text portions of this message have been removed]
> > >
> > >
> > >
> > > **** Sponsored By http://www.Berble.com <http://www.Berble.com>
> ****
> > > **** Computers You Carry ****
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> >
> >
>
> --
>
> Mark Golledge
> E: mark@xxxxxxx <mark%40markgolledge.com> <mailto:
> mark%40markgolledge.com>
> W: www.markgolledge.com
>
> [Non-text portions of this message have been removed]
>
> [Non-text portions of this message have been removed]
>
>
>



--

Mark Golledge
E: mark@xxxxxxx
W: www.markgolledge.com


[Non-text portions of this message have been removed]