[Asterisk-Users] IAX only speech one way

[Peder at NetworkOblivion]

> I have two Asterisk's connected via IAX, they are sitting on the same
> network, via a VPN, so there should be no problems with firewalls.

Huh?  How can they be on the same network "via a vpn".  If there is a 
vpn, then they are on two different networks, but "connected via a vpn", 
which would imply that there is a firewall/router of some sort that 
could be blocking traffic.