Community project
Headless SIP Intercom
This project builds a headless SIP intercom system using an ESP32 microcontroller, enabling two-way voice communication over a network without a display or user interface. The system connects to a standard SIP server, allowing it to make and receive calls like a traditional VoIP phone while remaining compact and easy to integrate into existing infrastructure.
The guide includes a complete parts list, wiring diagram for audio components, step-by-step assembly instructions, and firmware code to handle SIP registration, call signaling, and audio streaming. Builders will learn how to configure network settings, manage SIP credentials, and integrate microphone and speaker hardware with the ESP32.
Wiring diagram
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