The device will beep when you first plug it in. When you press the tamper button on the back of the device it will beep signaling that it is reaching out to Verizon for the necessary data. After roughly 1 minute the device will beep again meaning it has successfully provisioned with Verizon. The device then sends a message to our server and our server responds with an activate command for the device. This is the final beep you hear.