USB Panic Button Detail

Below is an explanation on how the USB Panic button works and the expected behavior.

When the phone is in the idle state, the function configured by the USB will be triggered by pressing the USB and will call whatever destination you have setup.
If you are on an active call that you have in a hold state, pressing the USB button will trigger the function configured by the USB button and leave the existing caller on hold.
If you are making an outbound normal call and you press USB button, the phone will directly end the outbound call, the phone will return to the idle state, and perform the functions configured by the USB button.
If the phone receives an incoming call that you have not answered and you press USB button, the phone will directly end the incoming call, the phone will return to the idle state, and perform the functions configured by the USB button.
If you are on an active call and talking and you press USB button, the phone will end the current call, the phone will return to idle state, and perform the functions configured by USB button.