STUN : Simple Traversal of UDP through NAT routers
Using a STUN server is one method to transmit an audio stream through a NAT router. AETA AUDIO Systems codecs are capable to make use of such servers, by configuring the public address of a STUN server.
You can use for instance the following servers:
Be aware that these services may be interrupted or modified; for long term use, check the validity of the server that is used.