Panasonic KX-TG6821E
Includes one base unit with answerphone, and one spare handset.
I can't guarantee it works because it's been a few years since I used it. But I have no reason to think it doesn't work.
The user manual is available on the Panasonic website.
Digital cordless phones - 1 pair (Shaw RG14)
This offer has been gifted to someone and is no longer available.