I have just bought a Lifesize express 200 system, I installed it behind an ADSL internet connection with dynamic IP address. A private IP address is assigned to the Lifesize system dynamically (DHCP).
I would like to initiate a Video-Conference call from my system to another one (Lifsize) in our headquarters. No VPN is installed yet. So far, I have not succeeded.
Any suggestion how to configure our Lifesize system in order to be able to initiate calls to public IP address outside of our LAN?