[Dan_-]

I did this but using Twilio, a Grandstream HT802v2, and a basic AT&T wall phone. Caller ID sorta works. I really tried to find a phone that would make a satisfying sound when slammed down, but I found that no one makes good, solid corded wallphones any longer.

The toughest part was figuring out which set of wires (my house had like 5 lines somehow) went to that particular jack in the kitchen.

[philips]

When I was a kid I remember discovering the heft of the home phone came from a big chunk of metal screwed into the plastic case.

(My family moved to cell phones so I got the opportunity to disassemble the old phone.)

Maybe just find some washers and glue them inside your handset and receiver?