I have 6+ year Hands on experience with Asterisk, Freeswitch, A2billing, Elastix, Free PBX,PBX In Flash,Vicidial,GoAutodial,Os Dial,TrixBox,FusionPBX,BlueBox,VTiger CRM, FAX integration and other VoIP related technologies.
I have worked on similar projects I am confident and pretty sure I can exceed your expectations.
You can reach me any time on Skype:-muntycse
I would love to work on your project.