All Services Programming & Development Network Administration $5/hr · Starting at $25 1200 employee call center integration of Avaya and Asterisk.Interstate call center telco routing. About $5/hr · Ongoing Download Resume 1200 employee call center integration of Avaya and Asterisk.Interstate call center telco routing. Skills & Expertise AsteriskAvayaFreepbxMySQLSiptrixboxVICIdial 0 Reviews This Freelancer has not received any feedback. Browse Similar Freelance Experts MySQL Developers