a. Establish VPN connection. You need to setup one more system wide “Local area connection”. We recommend to solve this task using OpenVPN (look more )
b. Start and configure our sipphone with VPN settings. This task is not very difficult. You have just set SDK’s network interface setting equal to connection name, created on previous stage.
Contact us if you have problems with doing these tasks.

ABTO Software VoIP SIP SDK is a very useful product combined with a first class service. Thanks to ABTO Software for immediate responses with really useful hints and solutions.
Uwe Markus
