Here is an easier way to reboot a polycom phone. No unplugging and nonsense needed. Here’s what to press on the Polycom phone to get to the reset option: Home -> Settings -> Basic -> Restart phone (option 7 or 9) Note: Home button can also say "menu" or just be a picture of a house Using hotkeys I am usually a proponent of hotkeys, but these seem to not be as straight forward. It is an alternative way to reboot the phone though! IP 321, 331, 335 : Volume-, Volume+, Hold, and Handsfree IP 450, 550, 560, and 650 : Volume-, Volume+, Mute, and Messages IP 6000 : *, #, Volume+, and Select IP 5000,700 and SoundStation Duo : *, #, Volume-, and Volume+ VVX 1500 : Delete, Volume-, Volume+, and Select VVX 500, VVX 600 and SpectraLink 8400 Series : 0, 1, and 3 dial pad keys. VVX 300, 310, 400, 410 : dial pad keys 0, 1, and 3 while the phone is off hook