HDV series can be reset to the Factory settings (Erase stored Phone numbers, Caller list,IP settings and etc.).
This operation should not be performed for a usual repair.
To perform IP Reset
1. Connect power plug (AC adaptor or PoE Hub)
2. Press "1", "5", "9" and "*" at the same time until LCD displays [factory reset].
3. Wait for the reset process until it LCD displays [factory reset done].
4. Disconnect AC adaptor or Ethernet cable(PoE)