US Robotics 56K Voice Faxmodem

Jon Mercer jon at
Mon Nov 5 21:01:48 GMT 2001


Is anyone successfully using a US Robotics 56K Voice Faxmodem with FreeBSD?
If so how??? I seem to have a problem with the control codes coming back
from it, which obviously is a bit of a showstopper for any chat scripts I
can write. This is the output from the userland ppp terminal option, and all
the settings look fine. But, the final OK gets truncated, and, no characters
are output to screen unless they get a keystroke to prompt them out, which I
can't believe is a feature.

    U.S. Robotics 56K Voice INT Settings...

       B0  E1  F1  L2  M1  Q0  V1  X4  Y3
       SPEED=115200  PARITY=N  WORDLEN=8

       &A3  &B1  &C1  &D2  &H1  &I0  &K1
       &M4  &N0  &R2  &S0  &T5  &U0  &Y1

       S00=000  S01=003  S02=043  S03=013  S04=010  S05=008  S06=004
       S07=060  S08=002  S09=006  S10=014  S11=070  S12=050  S13=000
       S15=000  S16=000  S18=000  S19=000  S21=010  S22=017  S23=019
       S25=005  S27=001  S28=008  S29=020  S30=000  S31=128  S32=002
       S33=000  S34=000  S35=000  S36=014  S38=000  S39=011  S40=000
       S41=004  S42=000

       LAST DIALLED #:


Any ATDT commands get dialled correctly, and I can change settings in the
modem fine with any of the AT commands, but nothing seems to be coming back
from the modem correctly, so I don't think it is a hardware/hardware jumper
config problem.

All I can think of now that this is a problem with /dev/cuaa1 major/minor
numbers. Can anyone confirm this, or point out the error of my reasoning???

Any helpful suggestions/workarounds gratefully received,

Jon Mercer

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