asterisk users - Oct 2009 - G.729 and Voicemail

While we're on the subject of G.729...

I can end to end use it with no transcoding, but voicemail is the main 
sticking point for me - I'd need to transcode.

So why can't voicemail store the audio in the format it's being streamed
in on?

Is there a technical reason for no voicemail storage in G.729? We have 
prompts in G.729, so why not the messages? It doesn't have to mix 
anything, just store the incoming audio...

Gordon

Gordon Henderson wrote:
> While we're on the subject of G.729...
> 
> I can end to end use it with no transcoding, but voicemail is the main 
> sticking point for me - I'd need to transcode.
> 
> So why can't voicemail store the audio in the format it's being
streamed
> in on?
Why do you think it can't? It most certainly can, but only if that's the
only format you will get connections in... if all your calls are G.729,
just configure voicemail.conf to store in g729 format. If your calls are
in a mixture of formats, then you'll have to use transcoding, but that's
unavoidable (if the voicemail was left via a G.729 call and stored that
way, but then later someone wants to listen to it using a G.711 call,
then it will still have to be transcoded).

-- 
Kevin P. Fleming
Digium, Inc. | Director of Software Technologies
445 Jan Davis Drive NW - Huntsville, AL 35806 - USA
skype: kpfleming | jabber: kpfleming at digium.com
Check us out at www.digium.com & www.asterisk.org