Hackaday · Maken

Free Your Rotary Telephone From Its Wire

A project has been developed to transform an old rotary telephone into a functional cellphone, allowing the original device to remain unmodified.

The setup involves a subscriber-line interface module that simulates a copper phone line, feeding audio and control signals to a Lilygo ESP32-S3 board. This board acts as the central processing unit and communicates with a cellular modem.

The software is designed to accurately mimic a North American subscriber line, providing dial tones and ringing the phone's bell for incoming calls. Special codes are included for wireless network maintenance and diagnostics.

This project offers a way to repurpose vintage rotary phones for modern communication without altering their original state.

AI-samenvatting op basis van de bron.