Use Google Voice for calls from a PC or cell phone over WiFi

Tech how-to: Make phone calls from your computer:
https://www.komando.com/tech-tips/make-phone-calls-from-your-computer/736698/
Google Voice is one of the options mentioned ...

(Read about it before signing up ...)
What Is Google Voice?  One voice number no matter how many times you change providers or jobs
https://www.lifewire.com/what-is-google-voice-1616888

Google Voice deserves your attention (again) - A once-abandoned Google service is finding new life — and deserves a second look.
https://www.computerworld.com/article/3564825/google-voice.html

How to Use Google Voice On Your Computer Desktop:  https://www.techjunkie.com/google-voice-desktop/

Download Google Voice for Windows:  https://downloads.tomsguide.com/Google-Voice,0301-51918.html
Read comments about some settings that will improve it ...

Google Voice Free Download for Windows 10:  https://appforwin10.com/google-voice-free-download-for-windows-10.html

(From Google) Get Voice:  https://voice.google.com/about

Google Voice (iPhone):  https://apps.apple.com/us/app/google-voice/id318698524
Google Voice gives you a phone number for calling, text messaging, and voicemail. It works on smartphones and computers, and syncs across your devices so you can use the app in the office, at home, or on the go.
NOTE: Google Voice only works for personal Google Accounts in the US

(Related) Google Fi: The complete FAQ: https://www.computerworld.com/article/3323068/google-fi-project-fi.html