I followed Xnet's instructions and can't register.
It should be as simple as entering Username, Password, Server and Fixed IP address in the VoIp section of Zentyal.
No positive result.
I decided to enter all information in Asterisk through Terminal (Ubuntu)
Still no positive result.
Using similar details fro Slingshot provides a connection in less than 2 sec. (Other account)
Please show me the way how to establish the Open VFX connection.