[Asterisk-biz] IAX2 Bandwidth Study

[Nick Bachmann]

Michael Giagnocavo wrote:

>  Nick Bachmann wrote:
>
> > Yes, you can, but you don't really want to. G.729 doesn't sound all
> > that great unless you're in a quiet room. Other codecs that use
> > more bandwidth sound better.
>
>
>  Huh? G729 sounds very good.

Well, you've had better luck with g.729 than I.  I've found it to be OK 
(its no G.711 obviously) in quiet rooms, but not if there's a lot of din 
in the background.  Since YMMV, I'd reccoment the OP test for himself 
and see what he thinks.

>  Much better than GSM IMO. And at 8k (for the voice) it's pretty small
>  too. If you can afford it (CPU and license-wise), G729 is great. If
>  you have the extra bandwidth, then go with G711 of course. But the OP
>  said:
>
>  "posted this to the User list but it might actually be more
>  appropriate here. Believe me this is a business question when 128K
>  line costs me $250/month, and 256K is $500 and so on."

Yes, but we don't know how many channels he's trying to push thru nor 
how valuable it is that his calls sound good.

>  So in this case, using G729 would be quite justified.

Too many variables yet to determine that.

Nick