Hi,
yes, I do this all the time as it is free to wherever you call and the quality is super. Both parties need to open ports for sip and redirect to LAN IP of their unit in the router. The number you call is username@ip
ort
username: is the username which is written in the unit you try to connect to
ip: is a wan address of the unit you try to call (unles it is in your LAN)
port: you need to specify if it is different than 80 (80, sip default port)
Both parties should to open and redirect UDP ports range to their unit in the router as well.
Good luck
Bookmarks