Google Voice for local, VOIP. ms for toll-free text and call in US and Canada. No live calls. Everything goes to voicemail and we call back.

I use https://www.quo.com/ (previously OpenPhone).

(no affiliation besides being a customer)

At Matasano --- and this is back to like 2005 --- we just used an online telephony provider that routed calls to our mobile phones. I'd probably still just do that today.

If you’re building something in this space I’d be open to have a call to share my experience owning a couple of companies.

I work for a business phone provider, so obvious bias there…but we always encourage a dedicated business number, and have found that it’s less about VoIP vs landline and more about the ease of separation and routing. That said, features like calls routed to mobile phones, auto-attendants, and voicemail or callbacks instead of constant live answering tend to function a lot more cleanly on VoIP systems.

Setups that hold up best usually prioritize flexibility over hardware. Ringing multiple devices, limiting interruptions during focus time, and having visibility into missed calls matters more than the specific underlying tech.

If it helps, here’s a neutral comparison of common small business phone setups and their tradeoffs: https://www.virtualpbx.com/blog/general-telephony/top-10-sma...