Hands on experience in Asterisk, SIP, PHP, MySQL, Dialers,IVRs,contact center applications.Installation of asterisk, maintenance and support, incident and problem handling. Make new IVRs and modification in existing IVRs, configure DID, TFN, SIP trunking, Connecting Asterisk to a VoIP provider, Call queues and ACD with Asterisk, Using AGI (Asterisk Gateway Interface) to execute external scripts and connect Asterisk to external APIs.