Aastra 650c User Guide Aastra 650c for Aastra 400 - Page 117

Troubleshooting, Malfunctions

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Further information Troubleshooting This section contains a few tips on how to operate your phone if you encounter any problems. Malfunctions 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. 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 "Activating range alarm and system busy beep", page 82). Display is working, but connection is not possible Your phone may be locked. Unlock your phone (see chapter "Locking/unlocking the keypad", page 80). Freely configurable keys cannot be configured The configuration may be locked. Unlock your phone (see chapter "Unlocking your phone", page 81). The key for a reconfiguration may be locked in the system. Contact your system administrator for more information. Display brightness insufficient The setting for the display's brightness is unsuitable. Change the setting (see chapter "Setting the display", page 84). 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. Phone calls can be made, but no names are displayed; the key configuration is missing, and the phone does not respond to function commands Restricted mode following a software update without update licence. Note: For all other messages, faults and questions you may have, contact your system administrator. Aastra 650c eud-1587/1.0 - R3.0 - 04.2013 117

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Further information
Aastra 650c
117
eud-1587/1.0 – R3.0 – 04.2013
Troubleshooting
This section contains a few tips on how to operate your phone if you encounter
any problems.
Malfunctions
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.
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
"Activating range alarm and system busy beep"
, page
82
).
Display is working, but connection is not possible
Your phone may be locked. Unlock your phone (see chapter
"Locking/unlocking the keypad"
, page
80
).
Freely configurable keys cannot be configured
The configuration may be locked. Unlock your phone (see chapter
"Unlocking your phone"
, page
81
).
The key for a reconfiguration may be locked in the system. Contact your system administrator for more
information.
Display brightness insufficient
The setting for the display’s brightness is unsuitable. Change the setting (see chapter
"Setting the dis-
play"
, page
84
).
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.
Phone calls can be made, but no names are displayed; the key configuration is missing, and the
phone does not respond to function commands
Restricted mode following a software update without update licence.
Note:
For all other messages, faults and questions you may have, contact your system administrator.