Telnyx API Demo

I am looking to use Telnyx API to make and receive calls. I require a demo code in PHP (laravel php) using their SIP Trunk API. The demo should be clean in code so I may add it to my project.

Must have your own server to demo me.

https://developers.telnyx.com/docs/v2/voice/webrtc/tutorials/quickstart/voice-sdk-quickstart/