IP setting - How to call through gateway on private network from public network?

  1. Set your router to forward all requests on port UDP 5060 to IP address of Main CPU and ports UDP 8000-9000 to IP address of VoIP card (you can change this range for thin VoIP card in the configuration tool).
  2. In menu VoIP parameters you should set IP address of NAT firewall to public IP address of your router.