[asterisk-users] SIP - no audio behind nat problem

[A J Stiles]

On Friday 15 Oct 2010, Zarko Zivanovic wrote:
> Hello,
>
> We have 2 grandstream GX 2000 phones behind NAT and Asterisk outside this
> natted network.
>
> We have the issue with calls to these SIP phones - no audio.
>
> It is probably the problem with port forwarding on router - but I am not
> sure how can I forward same sip ports (5004 to 5100) to two phones (nat
> addresses?)?

Simple answer, don't run SIP through NAT.  Have another Asterisk server on the 
outside and run IAX2 through NAT instead.  Much cleaner  :)

-- 
AJS