SIP Phone works using WebRTC & SIP protocol. You can use it in place of Soft(VoIP) phone. Please refer below link for more details about Features & How to use. https://github.com/anshkatriya/sipphone
You can Follow the below Step By Step procedure to install the SIP Phone Chrome Extension to your Chrome Web browser.
It is the SIP Phone Chrome extension download link you can download and install Chrome Browser.
Calls a phone number highlighted on a web page using Asterisk PBX
Make phone numbers clickable and initiate calls from Zoiper.
Integration supports CRM & Asterisk Server( FreePBX, Elastix, Vici Dial etc).
It is provide click to call from any web page in browser.
MidaSIP chrome extension