AT&T MERLIN LEGEND Release 3.1 Installation Manual page 208

Testing the System
If you hang up during any of these procedures, test mode ends automatically.
Keep the following in mind when using the speakerphone:
If the Mute button is pressed before the Speaker button, the Mute LED
cannot be turned off; it winks.
The Mute and Speaker LEDs remain steady during test mode.
The pressing of the Mute button is processed within the telephone.
When the telephone test is originated from the Speaker button, every
second press of the Mute button causes the Mute LED to flash off
momentarily. Also, both the Mute and Speaker LEDs may occasionally
remain on after disconnecting with the Speaker button.
Press the fixed-feature buttons repeatedly to toggle the LEDs on and
off.
To test the basic features of an MLX telephone, follow the steps below:
1 Pick up the handset of the telephone you are testing and push an ICOM
button in Key or Behind Switch mode or an SA button in Hybrid/PBX
mode.
2 When you hear dial tone, dial
You should hear a steady test tone over the handset and a ring burst over the
speaker. The telephone's red and green LEDs should be on.
3 To test the line buttons, press any line button with two LEDs (red and
green).
The diagnostic tone should stop, and the LEDs for that button should go off.
4 Press the same line button repeatedly to toggle between the green and
red LEDs. For a QCC, the display should show the name of the feature
programmed on the button.
5 To test a fixed-feature button with one LED, press the button.
The Feature and HFAI LEDs should turn off. The first press of the Speaker
button should turn off the Mute LED. The second press of the Speaker button
should turn off the Speaker LED.
7–4
Initializing and Testing the System
to activate test mode.