AT&T 3.0 manual Testing MLX Display Telephones, Testing MLX Telephones with MFMs, Press any button

Testing the System

6To test the red Message light, press a fixed-feature button without an LED (such as Transfer, Conf, or Drop) or any dialpad button.

The Message light should turn off.

7Hang up the handset to leave test mode.

Testing MLX Display Telephones

While the MLX display telephone is in test mode, follow the steps below to test the display buttons:

1 Press each fixed display button (Home, Menu, Inspct, and More).

The display should spell out these button labels.

2 Press the unlabeled display buttons.

The display should indicate Display Button n, where n is the number of the display button, 1 through 4.

Testing MLX Telephones with MFMs

You should test MLX telephones with MFMs for proper channel operation and test the MFM circuitry for the TTR, the ring generator, and the Message light.

To test an MLX telephone with an MFM installed and configured as a T/R adapter, follow the steps below:

1Connect a working 2500-type single-line telephone with a Message light to the MFM adapter (the 2500 telephone also must have a mechanical ringer).

2Pick up the handset and listen for dial tone. Dial *09.

You should hear another dial tone.

3Press any button.

This will deactivate the test tone.

4Dial 123456789*0#. Press the switchhook quickly. You should hear a confirmation tone.

Initializing and Testing the System 7-5