246 / TroubleshootingModular ICS 6.0 System Coordinator Guide P0992640 03Testing the telephone speaker1. Press ²¡âÞ, then £ or NEXT until the displayreads Speaker test.2. Press TEST or ³ to go ahead with a speaker test.A page tone sounds through the telephone speaker at themaximum volume. The volume returns to its previoussetting when you end the test.3. Pressing any button ends the test.Testing the power supply to a telephone1. Press ²¡âÞ, then £ or NEXT until the displayreads Power test.2. Press TEST or ³ to go ahead with a power supply test.You should see all the indicators on the telephone go on andhear ringing at maximum volume. When the test has ended, thedisplay should briefly show Power OK.The test lasts for five seconds or until you press a button.
