i recently replaced a well-working isa 28 kbs modem in my 233mh win 98 system with a 3com 56k pci p-n-p model. this is NOT a win-modem. installation was a breeze; it installed itself after asking for drivers which were supplied on floppy. these are 3com's latest.
it worked very well for a few days, giving me the expected quick browsing speeds. then i started to get 'general hardware use failure' messages when trying to connect to the internet. i ran 'more info' diagnostic under modem properties and got 'port already open' message.
i removed the modem from device mgr, rebooted, and reinstalled. after fresh reinstall, diagnostics gives me good modem communication message. try to connect to the internet, and i get a farmiliar 'connection cannot be established due to hardware failure.' at this time diagnostics gives a 'port already open' message. in other words modem installs correctly, but attempting to log in under dial up networking produces the failure.
i've tried keing in ATM1L3X0DT12345 COM5 (enter) under hyperterminal and do get '12345' tones. that would indicate that the modem hardware is ok?
the dealer has given me an rma, but i'm not so sure the modem is faulty.