The GearBrain guide to setting up Alexa Drop It, which lets you use your Echo and Sonos speakers as a smart home intercom system
Alexa Drop In turns multiple Echo and Sonos devices into a simple intercom system for chatting between rooms.
How to use Alexa as an intercom - CNET
How to Use Alexa's Drop In Feature : HelloTech How
How to Use an Echo Dot as an Intercom
How to Use Your Alexa Device as an Intercom
How to use Alexa as an intercom - CNET
Alexa Drop In: How to use Echo as a home intercom - Gearbrain
How to use Alexa as an intercom - CNET
How to Turn Your Echo Show Into a Home Video Monitor in a Few Easy Steps » The Wonder of Tech
How to use Alexa's intercom feature - The Verge
How to Use Alexa as an Intercom in 6 Steps - History-Computer