Lucent Technologies MERLIN LEGEND Release 5.0 Maintenance And Troubleshooting Manual page 85

MERLIN LEGEND Communications System Release 5.0
Maintenance and Troubleshooting 555-650-140
Telephone Problems
MLX Telephone Tests
Press each fixed-feature button that does not have an LED

(Transfer, Conf, Drop, and Hold) and each dialpad button.
When you press each one of these buttons, the Message LED should
toggle on and off.
Press the fixed-feature buttons and the dialpad buttons in the order

shown below to turn on all the LEDs.
a. Volume down
b. Volume up
c. Transfer
d. Conf
e. Drop
f. Hold
g. Dial
The LEDs should toggle on and off.
If the MLX telephone does not have a display, hang up and go to

Step 9; if it does, continue with the next step.
To test an MLX display, press each display button.

Each button name should display in the upper-left corner as described in
Table 3-2 below.
If any of these tests fail, replace the MLX telephone.

Test the Multi-Function Module (MFM) if present.

a. Connect a single-line telephone to the MFM.
b. Pick up the handset on the single-line telephone.
c. When you hear the system access or intercom dial tone, dial
d. Dial
e. Hang up.
123456789*0#
from the single-line telephone.
This connects the diagnostic test tone to the B-channel.
123456789*0#
Recall button to perform a switchhook flash.
You should hear a confirmation tone (three beeps).
You should hear a ring burst, and the Message LED should turn
on.
; wait for silence, and then quickly press the
Issue 1
June 1997
Page 3-7
*09