Asterisk vs Mitel

16
Asterisk
An open source telephony switching and private branch exchange service for Linux. Information on downloading, installation of and support for the product. Asterisk is like a box of Legos for people who want to create communications applications. It includes all the building blocks needed to create a PBX, an IVR system, a conference bridge and virtually any other communications app you can imagine.
10
Mitel
Mitel provides complete solutions for your business communications needs. Easily stay connected to your customers and employees anytime, anyplace. The Mitel MiVoice business communications platforms provide extensive communication features, robust call control, and support for a wide range of innovative desktop devices and applications.