AT&T Release 2.0 manual Testing the MLX Telephones with a Display

Initializing and Testing the System

Testing the MLX Telephones with a Display

While the MLX telephone with a display is in the test mode, follow these steps to test the display buttons:

1.Press the labeled display buttons ( 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 1 through 4.

Testing the MLX Telephones with an MFM

Test a MLX telephone with an MFM installed and configured for a T/R adapter, Follow these steps to check the proper channel operation and the MFM circuitry for the TTR, the ring generator, and the message light:

1.Connect a known working 2500-type single-line telephone with a message light to the MFM adapter. The 2500 telephone must also have a mechanical ringer.

2.Pick up the handset on the 2500 telephone and dial ✱ 09 after receiving the dial tone.

You should receive another dial tone.

3.Press any button to deactivate the test tone.

4. Dial 123456789 ✱ 0# and press the switchhook quickly.

You should receive a confirmation tone.

5. Hang up.

The control unit should send a ring burst, and the message light on the 2500 telephone should turn on.

6. Turn off the message light by dialing the appropriate code number.

7-12Testing the System