AT&T 3.0 manual LEDs should toggle on and off

MLX Telephone Tests

5Press 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.

6Press the fixed-feature buttons and the dialpad buttons in the order shown below to turn on all the LEDs.

aVolume down

bVolume up

cTransfer

dConf

eDrop

fHold

gDial 123456789*0#

The LEDs should toggle on and off.

7If the MLX telephone does not have a display, hang up and go to Step 9; if it does, continue with the next step.

8To test an MLX display, press each display button.

Each button name should display in the upper-left corner as described in Table 3-2below.

9 If any of these tests fail, replace the MLX telephone.

10Test 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.

cWhen you hear the system access or intercom dial tone, dial *09 from the single-line telephone.

This connects the diagnostic test tone to the B-channel.

dDial 123456789*0#; wait for silence, and then quickly press the Recall button to perform a switchhook flash.

You should hear a confirmation tone (three beeps).

eHang up.

You should hear a ring burst, and the Message LED should turn on.

fDial #54 to turn off the Message LED and resume normal operations.

Telephone Problems 3–7