BT SDSL attenuation limits?

I currently have a BT 2Mb SDSL line through a Cisco 800 series router,
which is not as fast as I thought. I know BT have an informal limit of
50-60dB attenuation for ADSL, and I also know that SDSL has a lower
limit. My SDSL attenuation is currently at 51dB:

Actual rate: 2056 Kbps
Modem Status: Data (0x1)
Received SNR: 41 dB
SNR Threshold: 23 dB
Loop Attenuation: 51.1400 dB
Transmit Power: 12.5 dBm
Receiver Gain: 6.1200 dB

Does anyone know what the SDSL limit is? If not, can anyone describe
their experience with SDSL with a high attenuation.

Thanks,
Richard Hobson

On 26 May 2004 04:54:11 -0700, hobkamp-(E-Mail Removed) (Richard)
wrote:

>Received SNR: 41 dB
> SNR Threshold: 23 dB

this tells us you are getting a nice loud signal relative to the
noise, so attenuation isn't your speed problem. What speed do you get,
is it the same to all sites ?

remember SDSL is contended so try it at different times (4am would be
illustrative)

Phil