OpenPayphone – open-source guts for a 1996 coin payphone (Pi and SIP)
OpenPayphone – open-source guts for a 1996 coin payphone (Pi and SIP) launched on June 7, 2026 with 23 votes, #811 of 22,647 launches that month and more than 90% of that year's launches.
In plain words
OpenPayphone replaces the internal electronics of a vintage 1996 coin payphone with Raspberry Pi and SIP technology to create a functioning internet-connected phone. Built entirely from open-source components, it lets developers and hobbyists transform retro payphones into working communication devices. The project is designed for those interested in telecommunications hardware, nostalgic tech projects, or exploring alternative phone systems. Code and documentation are available on GitHub.
written from the facts on this page · September 2026
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