Have you downloaded the latest MWAVE upgrade from IBM? The older 760CD's had very specific MWAVE problems.. Mine works fine on NT 4.0 On Thu, 23 Apr 1998, Alexander J. Annala wrote: > Has anyone gotten IBM MWAVE modem to work under Win/NT 4.0 > on the IBM Thinkpad 760CD ? Mine shows carrier detect w/o > any signal present (i.e. even before trying to dial). > > >