Hi everyone! What phone system are using?
I'm looking for PBX with:

- Powerful API
- Nice webphone or chrome extension (to make click to call and open the contact from incoming call)
- Ability to use and switch between IP phone and other sip softphones/webphones.
- Sending and receiving SMS from the same number

Kixie is the closest one, that we tested, but the price is high and missed some features in API.