A blast from the past. You're a great son.

At home, I still use a W48 [0], I bought somewhere in the mid-90s on a flea market. Just have to change the carbon capsule microphone every twenty years or so. In doubt, one can change to a simple transistor circuit microphone. My router has a phone jack that provides enough voltage to the bell. Works like a charm.

[0] https://en.wikipedia.org/wiki/W48_(telephone)