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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.
2.
3.
4.
5.
6.
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.
Pick up the handset on the 2500 telephone and dial ✱ 09 after
receiving the dial tone.
You should receive another dial tone.
Press any button to deactivate the test tone.
Dial
123456789
✱
0#
and press the switchhook quickly.
You should receive a confirmation tone.
Hang up.
The control unit should send a ring burst, and the message light on the
2500 telephone should turn on.
Turn off the message light by dialing the appropriate code number.
7-12
Testing the System