hi,
I have developed a lot of WebRTC based solutions,
I can develop not only the website but also configure asterisk server to support WebRTC,
WebRTC works best on Chrome and Firefox, cannot promise all modern browsers,
also we can have full-fledged reporting as well,
callback can also include SMS and voice based callbacks, with full reporting.
fixed price without reporting is $2000 and with reporting is $3000,
reporting will include a live dashboard of the calls and complete call logs.
If you want we can also have voice recognition in calls and IVR.
Kindly let me know if we can discuss the project in details and I can send you videos and snapshots of the similar works done.
regards,