AASTRA 620d for Aastra IntelliGate User Guide EN - Manual (Page 75)

Further information
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Troubleshooting
This section contains a few tips on how to operate your phone if you encounter any problems.
■ Malfunctions
The display reads: "System overload"
At the moment no connection can be set up via the current system base. The phone is trying to set up
a better radio connection with the same or a different system base. This message appears in standby
mode only.
The display reads: "No System"
You have moved out of the coverage area; the radio connection is interrupted. Move closer to a radio
station.
Leaving the coverage area
You are outside the coverage range. You can set the phone so that you receive a warning signal if you
leave the coverage area (see Chapter
"Activate range alarm and system busy beep" , page 50 ).
Display is working, but connection is not possible
Your phone may be locked. Unlock your phone (see Chapter "Locking/unlocking the keypad" , page 48 ).
Display brightness insufficient
The setting for the display’s brightness is unsuitable. Change the setting (see Chapter "Setting the dis-
play" , page 52 ).
Impaired sound quality during hands-free operation
The sound quality can be affected if the volume is too loud – turn down the volume. If the sound quality
fluctuates, contact your system administrator.
Note:
For all other messages, faults and questions you may have, contact your system administrator.