years of experience building applications of various purpose for voice Installation Expertises in Asterisk, Vicidial, Vtiger, A2billing, Free PBX, Elastix etc. IVR specialist in asterisk Advanced Dialplan in asterisk Useful and cost-effective phone management system planning & designing & installation Expertises in Digium, Sangoma, Openvox and other type of PRI & PSTN Card installation. Connecting Multiple Asterisk Server & Cloud Solution for asterisk (Amazon EC2, DigitalOcean, SolarVPS). Call centre setup using vicidial Advanced Voice broadcast system Training on Asterisk Advanced Call Recording Solution using Asterisk