Simon Telephonics has created an Azure VM build of FreePBX® and Asterisk on Enterprise Linux, supporting commercial add-on modules. FreePBX® is the number-one GUI for Asterisk with a strong core feature set and a large ecosystem of add-on modules. This VM is built directly from the vendor's installer and boots to the out-of-the-box experience. With FreePBX, you can build a cloud phone system, a call center, a traditional PBX with desk phones, or a fully software-based experience using WebRTC or softphones. FreePBX is intended for phone systems administrators that want the flexibility of open-source and open-standards, running in the Microsoft Azure environment. FreePBX is a registered trademark of Sangoma Technologies.