Voice Chat Computer to Computer

Hi all,

this is my problem:

I have Openfire installed on al linux machine, I have many client with Spark installed in the same Openfire LAN

and also in other site outside the LAN.

Site 1) Clients <— INTERNET —> Router <— LAN —> Openfire <— LAN —> Site 2) Clients

If clients on the same site do a “computer to computer” voice call everything

is OK, when an host in site 1 do a “Computer to Computer” voice call

with an host in site 2 all goes wrong.

In the client I see this log:

“Voice chat ended: No media received. This may be caused by firewall settings”

I nat 10000-20000 UDP port, 3478-3479 UDP port.

Someone help me?