8+ years over 200 intsallation on Asterisk , Vicidial , Freepbx , Asterisk Now , Elastix . Deployed in Dedicated , load balancing , HA thru XEN , Kerrighed cluster . 24x7 Support is also available , & I am a Digium certified Asterisk Admin ..
I have a team of developers in php to get this work done . need to know the full details of this project so as to exactly tell you the estimated duration and cost. do you want this to be integrated with vicidial or want a standalone unit .