Show HN: OpenPayphone – open-source guts for a 1996 coin payphone (Pi and SIP)

Category: other

Tags: payphone, voip, raspberry-pi, sip, retro-tech

Score: 6.3/10 (Innovation: 7, Technical: 7, Documentation: 8, Utility: 3)

OpenPayphone replaces the internals of a vintage 1996 COCOT payphone with a Raspberry Pi and SIP client, creating a fully functional VoIP payphone with a web admin interface for rate plans, cash tracking, and call logs. It's a compelling blend of retro hardware preservation and modern telephony engineering, though it remains a niche hobbyist project.

Target audience: hobbyists, retro-tech enthusiasts, telephony tinkerers

Repository: https://github.com/eric-cgn/openpayphone · Python · MIT

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