asterisk users - Jul 2005 - bandwidth cosume - iax

When I'm connected with two clients in the same LAN of the asterisk server
 using the same codec and the IAX protocol, I have no media passing through
 the asterisk. But, when these clients are on the Internet, all the media
 flow pass through the asterisk server. Is that way that it works? I can't
 see what is the difference.

Thank you and I'm so sorry for my poor english.

Wendell

Wendell Almeida Silva wrote:
>When I'm connected with two clients in the same LAN of the asterisk
server
> using the same codec and the IAX protocol, I have no media passing through
> the asterisk.
>
That is because IAX has a SIP-like reinvite mechanism. So by default, 
whenever it can, asterisk will step out of the media path which is a 
good thing unless you want to bill for the call.

You can use notransfer=yes in your iax.conf to change this behavior.

> But, when these clients are on the Internet, all the media
> flow pass through the asterisk server. Is that way that it works? I
can't
> see what is the difference.
>  
>
It's probably because your two clients are behind NAT routers, which 
unless you do port forwarding forces all traffic to go trough your 
asterisk box which is on the net.

>> But, when these clients are on the Internet, all the media
>> flow pass through the asterisk server. Is that way that it works? I
can't
>> see what is the difference.
?
>It's probably because your two clients are behind NAT routers, which 
>unless you do port forwarding forces all traffic to go trough your 
>asterisk box which is on the net.
Is there some way of clients behind NAT communicate peer-to-peer?