Call routing
How to Set Up a Business IVR or Auto-Attendant (With Script Examples)
How to design a phone menu callers don't hate: how many options to offer, greeting scripts to copy, business-hours and holiday routing, and how to test it.
Try D Line
One price per workspace, not per user.
Start a 14-day trial for $3, keep your existing number, and talk to a person whenever you need help setting it up.