[Asterisk-Users] NAT and *

[Andres]

>
>BUT, I am now able to call both phones at the same time and they both ring.
>This sounds like Asterisk is blocking multiple connections  from the same IP
>Address?  How do i go about fixing this?
>  
>

Your NAT bindings are probably expiring.  You need to have your phones 
send a Keep Alive every 10 - 30 seconds or change the registration 
interval to 30 seconds and it should work ok.