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USB and on-board modems not cooperating

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aharrisreid

Programmer
Nov 17, 2000
312
GB
I have Hayes Accura ISDN Modem which I connect to my laptop via. a USB port. Everything works well until I use the on-board 56k modem.

When I use my on-board 56k modem (not at the same time as the ISDN modem) it behaves very erratically, often slowly and often disconnects within a couple of minutes of connecting! If I physically disconnect the ISDN modem from the USB port (after 'safely' disconnecting it via the software, otherwise I get the famous BSOD), everything is ok again with the 56k modem.

I don't want to have to remember to unplug my ISDN modem (which is a pain to have to do via the software) every time I use the 56k modem (which is v. frequently).

The laptop is running XP Pro (SP1) and is stand-alone, although it does have a network card fitted. I have made sure that the latest modem drivers are installed.

Is there any way that both modems can live in harmony? Any help would be appreciated.

TIA,
Alan
 
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