Phone setup for a single-truck operator

You drive, you wrench, you bill. You cannot answer the phone. Here is the minimum viable setup.

A solo operator's phone problem is the worst version of the industry's phone problem. There is one human and he is always under a sink. The setup we recommend:

One business number that customers call.
Two rings to your cell. Pick up if you can.
If you cannot, AI picks up, qualifies, books or routes.
Text to your cell with the summary. You decide what to do at the next stoplight.