Hi,
I have been working with Cisco VoIP since 2001 and Asterisk and freepbx ,trixbox, elastix since 2007.
I have developed quite a few WebRTC to asterisk applications, which includes Virtual receptionist , WebRTC phone, WebRTC based click-to-call,
That being said I would like to have a little chat about your project to better understand the needs of the project
regards,