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orozz
Aspiring Expert
554 Views
Message 1 of 3

Currently on BT Option 4 Fixed 1M - Likely Speeds Moving to BT Option 2 ADSL2+

I'm currently on an old BT Option 4 fixed 1Mbps service which is expensive so I'm thinking of changing to BT Option 2 Broadband only.

 

The problem I have is that I'm on a long line, 63dB attenuation 21dB SNR (from the BT Business Hub), would I see any speed benefits of changing to ADSL2+? SamKnows predicts 2.5Mbps and BT predicts 3Mbps but would a long line support such speeds in real life? What would be the likely speed?.

 

BT Infinity is going live next year at Stamford with a revised date of September 2011 (should have been March 2011) is there any information on planned street cabinets? I did have an Infinity is coming email in August.

 

Thanks.

 

 

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2 REPLIES 2
hamish72
Recognised Expert
538 Views
Message 2 of 3

Re: Currently on BT Option 4 Fixed 1M - Likely Speeds Moving to BT Option 2 ADSL2+

Go here and enter your line attenuation

 

http://www.kitz.co.uk/adsl/max_speed_calc.php

 

 

And read here on maybe reduce  noise margin which is high

 

http://community.bt.com/t5/BB-in-Home/Poor-Broadband-speed/m-p/14217#M8397

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orozz
Aspiring Expert
522 Views
Message 3 of 3

Re: Currently on BT Option 4 Fixed 1M - Likely Speeds Moving to BT Option 2 ADSL2+

ok, kitz comes back with adsl2+ 2016kbps IP Profile 1750kbps.

 

I currently max out at 960kbps.

 

Noise margin is high as this is a fixed rate service as opposed to rate adaptive. Going by kitz, the higher the better for fixed service.

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