Rockwell and voice

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Sorry to forward this, but it's my first post to the list...
> I have tried for quite some time to get vgetty to act as an answering
> machine on my linux 2.0.28 system.  I have gotten some stuff to work.  For
> example, I have succesfully encoded the windows chime.wav sound to play as
> my greeting (although it was long ago and I forgot how I did it).
> However, messages recorded by vgetty are very garbled.  I convert them as
> follows:
> 
> rmdtosnd < tempfile.rmd > tempfile.snd
> sox -t .raw -sw -r 7000 tempfile.snd tempfile.au
> 
> In other words, I'm assuming .snd files are raw sequences of signed 16-bit
> words.  Is this wrong?
> 
> Also, whenever vgetty begins to record a message, it logs: 
> 
> cannot set controlling tty (ioctl): Operation not permitted
> 
> even though it's run as root.  It then begins recording, and doesn't stop
> until I kill it.  The phone will be left off the hook after I kill the
> process.
> 
> I have a Radicom Int'l Modem, and some windows software that came with it
> works fine.  Any insights into why it doesn't work under linux would be
> appreciated.  Thanks very much,
> 
> Rob