Voice

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Hi,

The USR 33.6 modem uses a slightly modified version of the gsm files.
rmdtopvf should work alright for decompressing but it doesn't seem to
support 8-bit compression so a little c program has to be written.  If
your usr is standard, read the first 32 bites from the file and junk them,
it's the vgetty header.  Then, read the file in 38 bite frames.  Sprit the
first two bbytes and the last 3 and spit out the middle 33 bites.  That
should be a normal 8-bit gsm file which you can play with.  Btw, this
information may be wrong but it works for me.

 -- 
Shane Wegner: shane@cm.nu
Sysadmin, Continuum Systems: http://www.cm.nu
Vice President, W.A.P.V.I.
Personal website: http://www.cm.nu/~shane
PGP key: http://www.cm.nu/~shane/pgp.txt
ICQ UIN: 15706546

On Wed, 9 Sep 1998, Samo Gabrovec wrote:

> Hello!
> I have USR sportster 33.6 internal voice, fax  modem, and i have
> problems converting raw modem data to pvf. my messages get recorded but
> now i cant "hear" them. The rmdtopvf program says that the compression
> of my modem is not supported. I'm sure that someone on this mailing list
> has the same modem and he went into the same troubles and I'm begging
> someone to help me.
> I'm not on the mailing list, so any answers will be welcome if send to
> me.
> thanks in advance
> 
> Samo Gabrovec
> 

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