I installed a Swann ST56 USB external to increase my connection speed, which it did by over 30%.
However after a time (never the same length) it suddenly stops downloading even though it is still connected. I'm using XP. I reinstalled the modem twice and deleted and reinstalled the dialup connection. I have the latest driver.
Next time I will NOT buy any hardware that is not Microsoft approved for XP, even if the manufacturer says it's OK.
I used my previous USR modem for 3 years and this problem never happened. It has happened about 10 times over the last 2 days since I installed the Swann, so have temporarily (I hope) returned to the USR with no problams.
How long before it stops downloading -- seconds, minutes, tens of minutes? How long have you waited to see if the modem recommences the download? What size files are we talking about? What speed is it connecting at? Is your USR modem 56k also?
For a while my new 56K modem was reporting that it was connecting at 114-or-so Kb, and was behaving erratically. When I manually restricted its maxiumum speed to 56K (somewhere in its or my ISP provider's setup menu -- I can't remember exactly where) it started behaving itself.
I don't believe you can get 115200 out of a 56k modem with a 52k connection -- so that's probably the root cause of your reliability problem. As I say, try restricting its speed to 56k in the setup screen and see if that improves the reliability.
Unless someone can tell me otherwise, I would say that the 45k you're getting from your USR modem is a fair average given the realities of ISP capacity, traffic, etc.