my modem (and dial-up session) don't run

I just installed Qnx rpt and it’s very fast!

I’ve a problem with my modem (Us Robotics 28.8 Sportser):

it seems death with qnx (on win and linux it works): it doesn’t
answer at the atz command…


Is there a modem configurator or something similar on qnx rtp?

Thanks

The Bos