Troubleshooting
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 | |||
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The handset keeps repeating the | When you launch the upgrade | First ensure that the handset update has | |||
checking step of the handset | process the first time, the handset | been completed (to 100%) at least once. | |||
update. | update may loop. | Then reset the MBU 400 by pressing the | |||
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| RESET button on the side of the base | |||
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| unit. | |||
The handset display is black. | Handset is in power saving mode. | Press any key. | |||
| Batteries are drained. | Charge the batteries. | |||
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| Power is not turned on. | Check that the batteries are inserted with | |||
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| the plus and minus ends facing the | |||
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| correct way. Press and hold the red key | |||
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| CLR | ||
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The handset does not charge. | The charger is not powered. | Check that the power cord is connected | |||
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| properly to the charger, and that power is | |||
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| turned on. | |||
| Batteries are not inserted | Check that the batteries are inserted with | |||
| correctly. | the plus and minus ends facing the | |||
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| correct way. | |||
The handset registration failed, | Handset is out of range of the MBU. | Move the handset closer to the MBU, | |||
and the status indicator on the |
| place it in the charger, and reset the | |||
display is black. |
| MBU. | |||
The display reads, "Searching for | Handset is out of range of the MBU. | Move the handset closer to the MBU. | |||
Gateway" or "Registering to |
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MBU is not powered. | Plug MBU into a power outlet. (If | ||||
Gateway" without registering | |||||
| possible, a continuous power outlet.) | ||||
successfully. |
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| Access codes don’t match. | Change the handset access code to | |||
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| match the gateway access code. (If you | |||
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| don’t know the gateway access code, it | |||
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| can be reset by your System | |||
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| Administrator.) Once the access codes | |||
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| match, reset the gateway to initiate | |||
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| handset registration mode. | |||
The POWER indicator on the MBU | MBU is not powered. | Check that the MBU power cord is | |||
is not lit. |
| connected properly, and that the adapter | |||
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| is plugged into a power outlet. (If | |||
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| possible, a continuous power outlet.) | |||
The | The Ethernet cable is not | Check that the Ethernet cable between | |||
not lit. | connected. | the WAN port on the MBU and the LAN | |||
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| port on your modem or router is | |||
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| connected properly. | |||
| The router or modem is not | Turn on the power to the modem or | |||
| powered. | router. | |||
| The MBU cannot retrieve an IP | In Internet settings, check that the IP | |||
| address. | mode corresponds to the IP mode of | |||
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| your Internet connection. | |||
62 | Aastra MBU 400 User Guide |
