[Asterisk-Users] call "load balancing"

[Kevin Walsh]

Joseph [syscon at interbaun.com] wrote:
> On Wed, 2005-08-10 at 08:10 +0400, Jean-Michel Hiver wrote:
> > I do up to 10 g.729 channels over 1024 / 256 DSL without noticeable
> > difference in call statistics (i.e. avg length of calls). If you are
> > using ADSL, the maximum bandwith you'll be able to use is your upload
> > rate since VoIP calls send data bidirectionally.
> > 
> > Of course if you're using g.711 it's a different kettle of fish since it
> > takes 80kbps (g.729 only uses about 24).
> > 
> According to Wiki:
> G729 is 8Kbps
> G711 is 64Kbps
> http://www.voip-info.org/tiki-index.php?page=Codecs
>
That's the payload.  You need to add the IP overhead to those numbers,
which will bring the total to what Jean said, above.  Trunking your
calls over an IAX link will help reduce the total IP overhead.

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