What the smartphone does
The phone handles the Internet connection, room membership and WebRTC media session. A connected motorcycle headset can remain the audio input/output device.
Why this can help
The phone becomes the common platform even when riders use different intercom hardware.
Audio, background use and reconnection
VocAll uses an Android foreground service to support continued audio while the app is in the background, and it attempts to reconnect after short network changes.
Safety first
Pair equipment, choose the room and test audio while stopped. A phone should not be handled while riding.
VocAll: free Android motorcycle group intercom with no VocAll account required.