I've just had my line regraded from 20CN ADSL to ADSL2+ LLU through a TalkTalk reseller.
My previous adsl stats were 21.5db attenuation and a stable 8.1snr.
With these figured I would have expcted around 19000kbps sync going off the kitz and farina checkers.
My current stats are:
ADSL Link Downstream Upstream
Connection Speed 15897 kbps 1022 kbps
Line Attenuation 24.5 db 14.9 db
Noise Margin 6.1 db 9.3 db
This seems a bit on the low side? My snr is around 6.4 most of the time but varies between 5.8 and 6.7 depending on time of day.
Is there some sort of line management on the talktalk llu stuff even through a reseller? the DMT tool shows line line as having 64 depth interleaving on too, will this affect sync speed? Also - I seem to remember that the target margin in 9db - maybe this is not helping either?
I should also point out that my router is plugged directly in to the nte5 socket which no extensions.
Any suggestions are most welcome!