The Nortel Norstar telephone has a testing mode that allows for testing a telephones power supply.

To test a telephone set power supply press the Feature button ( <or> ) followed by pressing 805 then press either the pound sign button or NEXT until the LCD Display reads Power Test.

To proceed with testing the power supply, press either the LCD Display button directly below the word TEST or press the Hold button ( <or> ). Now all button indicators should be lit and one should hear ringing at maximum volume.

The test will last for five seconds and the LCD Display should read Power OK. Otherwise, there is a problem with the power supply or how it's plugged into the telephone set.

If a button is pressed before the LCD Display reads Power OK the test will be aborted and end.

  

Phone User Guide   |    Nortel Norstar Phone User Guide