asterisk users - Jan 2007 - Convert a file from WAV to WAV49 or GSM for Asterisk

I would like to convert a file to WAV49 for use with Asterisk using
the linux command line. Specifically I would like to upload sounds to
use for unavail.wav and busy.wav, but I'd like them to be compressed
so that space is not wasted.

I tried using SOX but havent found the correct command-line options to
make it or Asterisk happy.

Ideas?

Hi Chris -
> I would like to convert a file to WAV49 for use with Asterisk using
> the linux command line. Specifically I would like to upload sounds to
> use for unavail.wav and busy.wav, but I'd like them to be compressed
> so that space is not wasted.
>
> I tried using SOX but havent found the correct command-line options to
> make it or Asterisk happy.
You can just use gsm format.  It uses the same encoding as wav49.
Here's page on the wiki about using sox, in general:

http://www.voip-info.org/tiki-index.php?page=Convert+WAV+audio+files+for+use+in+Asterisk

BTW: I'm a little curious about what application would require you to
conserve disk space that much, but not worry about conserving CPU for
transcoding sound files.

- Noah