2008-2010 - Worked as a asterisk solution provider and website development through freelance. Got to know about asterisk, PHP and many other opensource application based on these technologies like vicidial, osdial, A2billing , Vtiger CRM.
Got hand on video processing through ffmpeg on linux and created many sripts to automate the large number of video processing based on Database.
Got to integrate with bank and payment gateways for different products.
Experience of writing custom IVR application and GUI to control the properties through web based interface and database.
Enhanced hand on linux CLI and server administration