To change the IP address of a Nortel Networks IP Phone 2001 (Model NTDU90), do the following:
- Power off the IP phone (which can be done by pulling out the ethernet POE cable)
- Power on the IP phone
- When the Nortel Networks logo shows, sequentially press the four buttons immediately below the display (1, 2, 3, 4 in order)
- Use the same four buttons to navigate through the menu to configure the IP phone.
- When setting the IP address on the Nortel Networks NTDU90 IP phone, use the keypad to enter the number of the IP address and the * key to enter a decimal place (dot)
In addition to being able to change the IP address, this menu gives you a number of other configuration options for the Nortel Networks IP phone.