Find the answer to your question

Title
What is a virtual PBX?
How does a virtual PBX work?
What services are provided in the Freezvon virtual PBX packages?
How does a virtual PBX differ from the features that are available in your Freezvon account without it?
How to connect a virtual PBX?
How do I renew my virtual PBX?
How to delete a virtual PBX?