Hi Jenni,
Give this string a shot:
S38=1+MS=V90,0,300,33600,300,33600
This will force the Lucent to connect only at V28. If it is stable then try:
S38=1+MS=V90,0,300,33600,300,42000
This will force the modem to connect only at V34. Again if stable then try;
S38=1+MS=V90,0,300,33600,300,53000 (I THINK!)
Again this will force the modem to connect at 53,000 to your ISP.
I am not an init string guru but these are what I'd try. Having said that, though, I could be wrong.
These strings stop the modem from retraining (like yours is doing). It may lead to an 'all or nothing' scenario....ie: the modem will connect or refuse.
A safer option may be to use;
S38=X (Where X is 11,12,13 or 14). These give 50,52,54 & 56k d/l speeds respectively. Should you fail to connect then the modem will retrain back to V34......so you should at least connect anyway.
I hope this is useful but don't take it as Gospel. I love my Lucent but I don't know all its' little secrets

.
Sometimes the latest drivers are not the greatest. Go
here and d/l V5.54 and info. Go from there and see how the modem performs.
Yours
Declan (aka fredwest)