Duet 700 ~ 7th Edition ~ 31st October ’01 ~ 3845
Help
If you have any difficulty using your Duet 700, look in this section first for solutions to the most common problems.
No dialling tone
Make sure the telephone line cord is plugged into the telephone socket at the back of the unit and that the telephone line cord is connected to your wall socket.
Check that no other extension is in use.
Display screen not functioning properly or goes blank
Check whether the batteries are fitted correctly.
Adjust the contrast on your display (see ‘To adjust the display contrast’ on page 7).
Caller Display messages not being received
To be able to receive and display messages, you must subscribe to the Caller
Display Service from your Network Provider.
Phone does not ring Check that the ringer is not switched off on the phone that is connected to your Duet 700.
Check that no other connected phones are off the hook.
Check whether you have too many phone extensions in your home or office. For help with this, please refer to the ‘Technical information’ section on page 19.
NO NUMBER displayed Your Duet 700 checks the content of the Caller Display messages it receives. If it detects a problem with a message, it displays NO NUMBER rather than risk leaving a message with a possible mistake. This does not mean your telephone
is faulty.
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