Kirk writes in “I remember Limor had a payphone with a redbox-able circuit for making free calls posted a long time back. This guy took it a step beyond ith a circuit for controlling the coin mechanism on payphone. From the page:”–
This project aims to emulate a coin line as required by the older “dumb” (ie, non-COCOT) payphones such as the Western Electric 1D “Fortress” series. This coin line interface connects in between an Asterisk PBX and the payphone. It provide the coin control functionality as well as the ability to determine whether an initial rate has been deposited, and can also perform the “stuck coin” test. In addition, it can count dial pulses to provide out-of-band dial ignalling to Asterisk for the rotary-style 1D1 payphones.
Have an amazing project to share? Join the SHOW-AND-TELL every Wednesday night at 7:30pm ET on Google+ Hangouts.
Join us every Wednesday night at 8pm ET for Ask an Engineer!
Learn resistor values with Mho’s Resistance or get the best electronics calculator for engineers “Circuit Playground” – Adafruit’s Apps!
Maker Business — How Intel Makes a Chip
Wearables — Tape tactics
Electronics — Ground connections cooler via more vias
Biohacking — Itch Tracker for Apple Watch
No comments yet.
Sorry, the comment form is closed at this time.