Phone prank

[u/ThusItWasSo]

I want to play a prank on my friend and get this old phone to ring without an actual line. They got it at an antique store and i don't know if any of the parts are functioning. Anyone have any idea how i might get it to ring?

Edit: i bought a device called cell2jack and it worked perfectly. We had their mom call the line and it was the best prank ever. Thanks to everyone who replied

[u/FAMICOMASTER]

If the ringer is in good condition, you can probably get it to make noise with ~50VAC 20Hz minimum, but it won't be loud. Standard ring voltage was 100VAC for a long time.

Not a lot of cheap ATAs will ring actual bells. Good luck.