[asterisk-users] Can't get G.729 to work...

Ben Schorr bens at rolandschorr.com
Tue Dec 15 14:46:44 CST 2009


I thought I already did that - which is how they now get some (but not
yet all) of their calls on G.729.  <scratching head>

Ben M. Schorr
Chief Executive Officer
______________________________________________
Roland Schorr & Tower
www.rolandschorr.com
bens at rolandschorr.com


> -----Original Message-----
> From: asterisk-users-bounces at lists.digium.com [mailto:asterisk-users-
> bounces at lists.digium.com] On Behalf Of Tim Nelson
> Sent: Tuesday, December 15, 2009 10:29 AM
> To: Asterisk Users Mailing List - Non-Commercial Discussion
> Subject: Re: [asterisk-users] Can't get G.729 to work...
> 
> ----- "Ben Schorr" <bens at rolandschorr.com> wrote:
> > Oh, dear.  So my users with "less-than-ideal" bandwidth are stuck
with
> > drop-outs and poor sound quality because they can't use the reduced
> > bandwidth codec for those calls?  :-(
> >
> > They've been complaining that they often end up on a call where one
or
> > both parties are "cutting in and out".  Unfortunately it's only this
> > one remote site, with about 8 users, who connect across a VPN to the
> > site where the server is.  We've tried increasing their bandwidth
and
> > tweaking the QOS settings on their firewalls but so far we haven't
> > been able to solve it.  I was hoping that switching to a lower
> > bandwidth CODEC would give them the call reliability they need.
> >
> > If not then I guess I'm back to the drawing board, with increasingly
> > impatient users, trying to troubleshoot their call quality issues.
> >
> 
> You need to install the G.729a codec on your system so that it will
transcode
> your calls from ulaw (on your PRI side) to g729 (on your SIP side).
Keep in
> mind that G.729 is a patented codec which requires licensing. The two
> companies offering G.729 for Asterisk(that I know of, please correct
me if
> there are others :-) ) are here:
> 
> http://store.digium.com/productview.php?category_id=5&product_code=8
> G729CODEC
> http://www.howlertech.com/products/howlets/
> 
> I've always used the Digium G.729 and it has worked flawlessly. I've
also
> heard good things about Howler G.729 but never used it personally.
> 
> Tim Nelson
> Systems/Network Support
> Rockbochs Inc.
> (218)727-4332 x105
> 
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