Hello.
Please, do not mind the cost.
Is it a Unified Communication that you need in the following category?
WebRtc
Unified Communication
Voip Sip
Video, Text, Audio.
Econferencing
IVR
Free Call
Im listing all these based under Communication category..
my email is farinsfemi @ gmail . com
I can help you further with this project, get back to me for more information and explaining the requirements.