How to change extension names:
If you wish to change an extension name on your system, go to the Administrator’s phone, usually the large display phone. Press the PROGRAMME key and dial **1234. At this point, you’ll see, “System program number” on the display.
Dial 004 and then press ENTER and it will show, “Enter extension number”. Dial the extension number of the person you wish to change the name for. Press CLEAR and then type in the new name using the keypad. If you need a space or to move forward, just press the arrow key.
Once you’ve entered the name, press ENTER to save the name. To accept all changes press HOLD and then press EXIT on the display.