AT&T MERLIN LEGEND Installation & Maintenance Manual page 511

Maintenance and Troubleshooting
MLX Telephone Tests
Follow the procedure below to test MLX telephones. The tests
check the
LEDs
display screen
ringer
buttons
switchhook
B-channel operation
Follow this basic procedure for any MLX telephone test:
1. Pick up the handset.
At the dial tone, enter the feature access code (∗00) by
2.
pressing the dialpad.
The software should place the telephone in test mode.
3. Run the test.
Hang up when done.
4.
Note: Telephones cannot be tested remotely.
Basic MLX Telephone Test. This test connects a test tone to
the B channel and sends a repeated ring burst to the telephone.
All the LEDs turn on.
Follow these steps to test an MLX telephone:
1. Press a line/feature button with two LEDs to toggle these
LEDs red and green.
Maintenance 5-33