Services   |   Contact Us   |   Partners   |   Request A Quote What is Asterisk? Asterisk is a flexible open source, which allows you to explore, see how it works and make any changes or  enhancements to match your requirements. Asterisk is strong, reliable and thousands of systems worldwide  are putting it to use. Asterisk is free to use. Asterisk Video Home  | Products  | Solutions  | Services  | Get A Quote  | Company  | Contact Us 1.888.635.2440 LinkedIn FaceBook Twitter SwitchTel Communications Logo Products  | Solutions  | Services  | Get A Quote