[Glawen]

The idea is to pick up an old rotary phone and hook it up a raspberry pi which will make phone call over VoIP. The rotary dial will just be the user interface, the mic and speakers will be hooked to the RPI. There are some project on github explaining the project: https://github.com/hnesland/aselektriskbureau I plan to enhance it a bit to use the original ringer with the help of some power electronics.

However I have no clue on how to create a Voip server at home to serve phones locally and assign phone numbers.