Nissan LEAF 2023 Owners Manual
8.10.1.2. Phone END button
Reject an incoming call by pressing
during an incoming call.End an active call by pressing
once.
Park the vehicle in a safe location, and apply the parking brake before using a device's voice functionality.
The 
button should only be used for activation and use of the hands-free functions on your phone, you should not touch/pick up/hold the phone whilst driving.
Owners Manual