How to factory reset Polycom Lync Phone



To Reset the POLYCOM Lync Phone (CX500/CX600/CX3000 IP Phone) follow below steps,
  1. Press and HOLD * with # on phone for five seconds.                                                                                  For Hard Reset - Hold down * and #                                                                                                    Factory Reset - Hold down 4 and 6
  2. Disconnect power while pressing the keys
  3. Connect the phone's power supply
  4. It will ask for to clear user data.

    "The operation you have requested will erase all user-created data.
    Do You want to continue."
  5. Select Yes