Troubleshooting

Pressed key does not respond:

Check whether the key is stuck. 

Telephone does not ring:

Check whether the do not disturb function was activated on your telephone (" Do not disturb" appears on the screen). If so, deactivate it . 

You cannot dial an external number:

Check whether you telephone is locked ("US:Not authorized UK:Access denied" appears on the screen). If so, unlock the telephone . 

No LDAP or WAP functionality, lamps (key LEDs) do not shine or the external keyboard has no function:

Check whether the plug-in power supply unit is plugged in (except connection by HFA with "power over LAN"). 

To correct any other problem:

First contact service personnel. If service personnel is unable to correct the problem, contact Customer Service.