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Screen
Problems Solutions
Nothing is displayed on the LCD
screen during the call.
Check if the phone cables are properly connected to
the ports. (Please refer to the section on ‘Phone
Installation’ under ‘Preparations’ in this user manual.)
General
Problems Solutions
The phone does not ring or the
sound is too quiet.
Press the [Vol] button to increase the sound.
(Please refer to the ‘Volume Control’ section under
‘How to Use Basic Functions’ in this manual.)
The sound is not clear due to
interference or crossed lines.
If you were using the speaker, try using the handset.
There is a lot of echoing
during internal broadcasting.
When you broadcast, the noise from the speaker
may cause echoing. Maintain a distance of 1m from
the phone.
Caller ID does not appear on
the LCD screen.
- Ask the service provider whether the Caller ID
service is activated.
- If the user has requested to be removed from the
Caller ID service, it will not appear on the screen.
- If the user is calling from an area where the Caller
ID service is not valid (e.g. making an international
call), Caller ID will not appear on the screen.
- If the user calls from a payphone, Caller ID will not
appear on the screen.
- If the user received invalid information from the
service provider, Caller ID will not appear on the
screen.
- If the service provider does not provide the Caller
ID service, Caller ID will not appear on the screen.
The sound is not clear due to
interference or crossed lines.
If you were using the speaker, try using the handset.
You are unable to access the
main menu from the call
forward or rejection screen.
Set the UC dial to a central position then you will be
able to access the menu.