Walkie-Talkie module Built On Tiny ESP32 board - Electronics-Lab.com
Are you ready to play with Do-It-Yourself Alexa Speaker, WiFi SIP phone, WiFi walkie-talkie, Internet Radio player and broadcasting? Then the Open Source hardware ESP32-ADF is the right board to start with!
I built a wifi "walkie" talkie for my kids; now you can too! | Daniel Chote's Project Blog
SOCORAD32: A hackable, open source, ESP32 amateur radio board with walkie- talkie functionality and data communication - Open Electronics - Open Electronics
SOCORAD32 is a new ESP32 powered walkie-talkie - Electronics-Lab.com
Sending sound over the internet! | Arduino projects, Arduino, Arduino audio
Possible to use esp32 as a microphone output? - Project Guidance - Arduino Forum
ESP32 walkie-talkie - Open Electronics - Open Electronics
Walkie Talkie Duino from Senior Electron LLC on Tindie
DIY In House Wireless Walkie Talkie - Voice Intercom Adventure - Share your Projects! - Home Assistant Community
SOCORAD32 ESP32 walkie-talkie board also supports data communication (Crowdfunding) - CNX Software
ESP32 Walkie-Talkie using a customized extension HAT, GitHub link in the comment : r/esp32