This person in Vermont restores old pay phones and converts them to IP phones. We've got an old pay phone in sudoroom: anyone want to try this? =Peter

https://www.core77.com/posts/137183/Engineer-Fixes-and-Re-Installs-Old-Payphones-Provides-Free-Calls-to-the-Public
https://www.youtube.com/watch?v=DwXTUM2Y7L0