DTR Dropped means just what it says -- the modem disconnected because
it detected a DTR drop at your end. Had you picked up a later disconnect,
then the counters would also have been reset. Perhaps you have
inadvertently set an idle timeout in your software. Check the Internet
applet in the Control Panel.
This is an indication of the modem running too fast for line conditions.
USR modems are bad about that. You are seeing a lot of error correction
taking place with that large number of Blers (Block Errors), Link
Timeouts and Naks, and even one retrain request. You can improve that
considerably by capping off the top speed at a rate that eliminates all
those throughput affecting things. I'd try for a maximum of 5 Blers a
minute. You are running about 37/minute now. First try 49,333 by adding
&U10&N33 in Extra Settings. If that doesn't get you there, then drop it
to 48,000 with &U10&N32. When properly set, you should get maximum
overall data throughput, by eliminating Blers, Naks, Timeouts, speed
shifts, and retrains. Good luck.
Reducing the connect speed may have worked. I have several hours of connect
time so far without a stall. The strange thing is, I tried this previously
when the modem was flashed to V.92 and it did not stop the stalls.