It might improve a little. They usually seem to want to make a connection at around 6db SNR, unless there is a history of problems on the connection.
Having said you don't want to fiddle with the modem too much, you could wait until you see a particularly high snr (eg the signal is particlarly good), and then force a resync.
That will probably give you 6db against the good signal, which will drop as the signal deteriorates.
However, doing that might increase the error rate and cause DLM to force extra error correction, so you would not necessarily win out long term.
My understanding from other posts (especially very helpful ones from WWWombat). Remember: my understanding is NOT 100% reliable ...
The Max figures you get from the HG612 give you an indication of the very best you could possibly get accepting a significant amount of unreliability.
The main difference between Max and actual are partly due to SNR and partly due to the overheads of error correction.
The overheads of error correction are R/N (or R/I) (R,N,I from the modem figures).
If DLM dropped error correction on your line, you would see a speed of
NOECCPath = Path/(1-R/I)
I think that generally to losses due to error correction are greater than the losses due to too high an SNR.
DLM does not gratuitously force higher SNR and ECC; it does it because it sees (or thinks it sees) errors.
So you certainly can't expect miraculous changes.
If SNR decreases without forcing a new connection, that is because the actual signal is deteriorating. Once a modem connection is made, the sync speed will not change during the life of that connection. If SNR gets too low, the errors will build up so much that DLM will force a new connection, and that will be at a lower sync speed.
Moved (with trepidation turned relief) to BT Infinity 2 for upload speed. Happy BE user for several years.
Edited by StephenTodd (Fri 17-May-13 10:49:27)