To start the IP phone self-test procedure, press MUTE <password> TEST # or MUTE <password> 8378 #.
ADDITIONAL INFORMATION:
The phone does the following:
Each column of programmable button LEDs is lit for half a second from left to right across the phone, in a repeating cycle. The Speaker/Mute LED and the message waiting LED are also lit in sequence.
Buttons (other than #) generate a click if pressed.
Phones with displays show Self test #=end for 1 second after self-test is started. Then a block character (all pixels on) is displayed in all display character locations for 5 seconds. Display of the block character is used to find bad display pixels.