Aastra Telecom 41-001286-00 Manuel D’Utilisation

Aastra MBU 400 User Guide

Troubleshooting

The following is a list of solutions to the most common issues that you may
experience when you install and use the MBU 400. Most of the problems you can
easily solve yourself, whereas others require that you contact your service provider.
To view the most recently updated troubleshooting information, go to
www.aastratelecom.com.

Issue

Causes

Solution

The handset keeps repeating the

checking step of the handset

update.

When you launch the upgrade

process the first time, the handset

update may loop.

First ensure that the handset update has

been completed (to 100%) at least once.

Then reset the MBU 400 by pressing the

RESET button on the side of the base

unit.

The handset display is black.

Handset is in power saving mode.

Press any key.

Batteries are drained.

Charge the batteries.

Power is not turned on.

Check that the batteries are inserted with

the plus and minus ends facing the

correct way. Press and hold the red key

The handset does not charge.

The charger is not powered.

Check that the power cord is connected

properly to the charger, and that power is

turned on.

Batteries are not inserted

correctly.

Check that the batteries are inserted with

the plus and minus ends facing the

correct way.

The handset registration failed,

and the status indicator on the

display is black.

Handset is out of range of the MBU. Move the handset closer to the MBU,

place it in the charger, and reset the

MBU.

The display reads, "Searching for

Gateway" or "Registering to

Gateway" without registering

successfully.

Handset is out of range of the MBU. Move the handset closer to the MBU.

MBU is not powered.

Plug MBU into a power outlet. (If

possible, a continuous power outlet.)

Access codes don’t match.

Change the handset access code to

match the gateway access code. (If you

don’t know the gateway access code, it

can be reset by your System

Administrator.) Once the access codes

match, reset the gateway to initiate

handset registration mode.

The POWER indicator on the MBU

is not lit.

MBU is not powered.

Check that the MBU power cord is

connected properly, and that the adapter

is plugged into a power outlet. (If

possible, a continuous power outlet.)

The I-NET indicator on the MBU is

not lit.

The Ethernet cable is not

connected.

Check that the Ethernet cable between

the WAN port on the MBU and the LAN

port on your modem or router is

connected properly.

The router or modem is not

powered.

Turn on the power to the modem or

router.

The MBU cannot retrieve an IP

address.

In Internet settings, check that the IP

mode corresponds to the IP mode of

your Internet connection.

CLR