Posting this here since I don't actually see this turning up anywhere else on the web at all. I have a Plantronics BT headset and after finally getting moved to 10.13 (from 10.8 ) I decided to go and ...

Plantronics has announced Mac compatible for its Calisto Pro cordless home phone system. The Calisto Pro costs $279.95, and the software (and user guide addendum) is available for online download.