AT&T Release 2.0 Testing the System, Troubleshooting Failed Tests, Testing the MLX Telephones

Initializing and Testing the System

Testing the System

Once the system has been installed and initialized, it is ready for system acceptance testing. Perform the basic functionality tests in this section to test the trunks, telephones, and features.

Troubleshooting Failed Tests

If any equipment is not working properly, see the Maintenance and Troubleshooting guide for troubleshooting instructions.

Testing the MLX Telephones

The switch-based software test described in this section verifies that the LEDs, ringer, buttons, switchhook, and B-channel operation on the MLX telephones are working correctly. This test cannot be run when the telephone is in program, forced-idle, or maintenance mode. When an MLX telephone is in the test mode, it is considered busy and therefore not available for use.

If you hang up during any of these procedures, you are automatically taken out of the test mode.

Follow these steps to test the basic features of an MLX telephone:

1 . Pick up the handset of the telephone being tested and push an Intercom button ( ICOM ) in Key or Behind Switch mode or a System Access button ( SA ) in Hybrid/PBX mode. After receiving a dial tone, dial ✱ 00 to activate the test mode.

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.

2 . 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.

3 . Press the same line button repeatedly to toggle between the green and red LEDs.

7-10Testing the System