said 1 year, 1 month ago:
Google Voice is direct connect to, or from the person you are calling. If you aren’t available, it will take a voice message, transcribe it to text and send you an email letting you know you missed a call.
It also allows you to send/receive text messages.
I did a test with it a couple of months ago and didn’t use my cell phone at all for a couple of weeks.
So now I use it as a secondary line for contact.