Kitz Forum

Broadband Related => ADSL Issues => Topic started by: purenirvana on June 19, 2008, 12:16:03 AM

Title: Adjusted Downstream SNR, what about Upstream SNR?
Post by: purenirvana on June 19, 2008, 12:16:03 AM

Hello again to everybody, I hope all is well!

I have recently downloaded DMT v8 and have adjusted the downstream SNR on my Netgear DG834GT so that I sync stabley at a full 1mbps higher! I am very pleased as you would expect!!  :D

The thing I am wondering is, would it be possible to now adjust my upstream SNR using DMT or similar? I notice in DMT above where it says upstream it states RCO: 46% (968kbps), however I am only syncing at 448kbps.

Any help on this would be whole-heartedly appreciated!!  :)

Title: Re: Adjusted Downstream SNR, what about Upstream SNR?
Post by: mr_chris on June 19, 2008, 02:35:11 AM

448kbps is the maximum sync speed on a Home "up to 8Mb" connection, presuming you're not on LLU - even if you are they often limit to 448kbps too. "Office" connections are up to 832kbps.

With that RCO figure saying 46%, if your broadband package allowed a higher than 448kbps sync, then chances are your line would manage it!

Title: Re: Adjusted Downstream SNR, what about Upstream SNR?
Post by: purenirvana on June 19, 2008, 10:49:58 AM

Thanks for your reply Mr_Chris,

Am I correct in thinking RCO stands for relative capacity occupation?

There is no chance of us having our exchange upgraded to a higher than upto 8 mbps one, so looks as though I am stuck with the lower upstream connection, nevermind!!!

It took us ages of campaigning to BT just for them to broadband enable it back in 2004!!!  :no:

Title: Re: Adjusted Downstream SNR, what about Upstream SNR?
Post by: roseway on June 19, 2008, 12:13:50 PM

>> Am I correct in thinking RCO stands for relative capacity occupation?

Yes, that's right.

Title: Re: Adjusted Downstream SNR, what about Upstream SNR?
Post by: kitz on June 20, 2008, 09:32:20 AM

DMT doesnt tweak the upstream.. on those routers that are tweakable, most router software will only allow you to change the downstream SNR Margin.

>>> here is no chance of us having our exchange upgraded to a higher than upto 8 mbps one,


Have you had a look on the adsl checker (http://www.kitz.co.uk/adsl/adslchecker.php) to see which LLU providers are available at your exchange?

Title: Re: Adjusted Downstream SNR, what about Upstream SNR?
Post by: purenirvana on June 24, 2008, 05:32:01 PM

Hi Kitz,

Yes I've had a look, unfortunatley not one operator is offering LLU at our exchange  :(

Our exchange only serves about 700 premises so they probably don't consider it worth their while!

Thanks anyway though for your help, it's greatly appreciated.

Title: Re: Adjusted Downstream SNR, what about Upstream SNR?
Post by: kitz on June 24, 2008, 08:38:15 PM

>> Our exchange only serves about 700 premises so they probably don't consider it worth their while!

Thats true - it wont be :/

>> Thanks anyway though for your help, it's greatly appreciated.

YW :)