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

[Ben Schorr]

Yes, the routers are another issue we're dealing with.  We've configured
them to prioritize traffic to/from our Asterisk server but I'm not
convinced that setting is really working as expected.  So we're working
with the vendor on that.

The effective bandwidth is 6Mb/sec down x 1.4Mb/sec up (so basically
1.4x1.4 on the VPN).  For 8 users, where rarely more than 2-3 of them
are on the phone at any given time, that should be sufficient I think.

They DO have to share the connection with their web browsing and e-mail
and such but as best we've been able to tell they aren't saturating
their connections - usually not more than 4-5 of the 8 are using their
computers at any given time and most of them just do e-mail and local
apps that shouldn't touch the Internet connection.

Frankly I'm puzzled that they have these issues and the problems rarely
seem to happen when I call them.  I'll go to their site and make a few
calls from one of their phones and it sounds perfect to me.  But three
days later all I hear is how frustrated they are because these new VOIP
phones suck and they can "never" hear anybody and...  <sigh>

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 Danny Nicholas
> Sent: Tuesday, December 15, 2009 10:54 AM
> To: 'Asterisk Users Mailing List - Non-Commercial Discussion'
> Subject: Re: [asterisk-users] Can't get G.729 to work...
> 
> Do your routers allow giving these users maximum priority?  What is
the
> effective bandwidth on the VPN connection?
> 
> -----Original Message-----
> From: asterisk-users-bounces at lists.digium.com
> [mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Ben
Schorr
> Sent: Tuesday, December 15, 2009 2:47 PM
> To: Asterisk Users Mailing List - Non-Commercial Discussion
> Subject: Re: [asterisk-users] Can't get G.729 to work...
> 
> 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
> >
> > _______________________________________________
> > -- Bandwidth and Colocation Provided by http://www.api-digital.com
--
> >
> > asterisk-users mailing list
> > To UNSUBSCRIBE or update options visit:
> >    http://lists.digium.com/mailman/listinfo/asterisk-users
> 
> _______________________________________________
> -- Bandwidth and Colocation Provided by http://www.api-digital.com --
> 
> asterisk-users mailing list
> To UNSUBSCRIBE or update options visit:
>    http://lists.digium.com/mailman/listinfo/asterisk-users
> 
> 
> _______________________________________________
> -- Bandwidth and Colocation Provided by http://www.api-digital.com --
> 
> asterisk-users mailing list
> To UNSUBSCRIBE or update options visit:
>    http://lists.digium.com/mailman/listinfo/asterisk-users