isapnp modem (not win)

I have a USRobotics isapnp modem.
BIOS set up the modem.
Dials out fine in QNX.

Photon Dialer
Finds USRobotics pnp fax modem and dials.
(devc-ser8250 -u3 3e8,10)
AUTHORIZATION FAILS (pap/chap)

Connects (INTERACTIVE),but
(garbage on screen) then
FAILS (NO CARRIER).
CONNECTION IS IN LOG SO IT WAS MADE !!!

isp - easy-pages.com 215-857-9995
name servers are listed in dial-up and resolv.conf
207.8.135.5
207.106.32.3

Any help, I’m at a loss.