Questions And Answers - Gigaset SX790 ISDN User Manual

Customer Service & Assistance

Questions and answers

If you have any queries about the use of your
telephone, visit our website at
www.gigaset.com/service
for assistance 24/7.
The table below contains a list of common
problems and possible solutions.
The display is blank.
1. The handset is not switched on.
¥ Press and hold the end call key a.
2. The battery is empty.
¥ Charge the battery or replace it
(¢ page 10).
The display shows "Not possible".
ISDN jack may not be plugged in.
¥ Plug in the ISDN jack.
The message appears when you try to activate
Eco Mode+:
A handset is registered to the base that does not
support Eco Mode+.
Not all menu items are displayed.
The menu display is restricted (standard mode).
•
¥ Activate complete menu view (expert mode
) (¢ page 29).
No Base
" " flashes in the display.
1. The handset is outside the range of the base.
¥ Move the handset closer to the base.
2. The base's range is reduced because
Eco Mode is activated.
¥ Deactivate Eco Mode (¢ page 56) or
reduce the distance between the handset
and the base.
3. The base is not switched on.
¥ Check the base power adapter (¢ page 9).
Please register handset
"
play.
Handset has not been registered with the base or
has been de-registered.
¥ Register the handset (¢ page 59).
78
" flashes in the dis-
Handset does not ring.
1. The ringtone is switched off.
¥ Activate the ringtone (¢ page 68).
2. Call divert set for "All Calls".
¥ Deactivate call divert (¢ page 72).
3. The phone only rings if the phone number
has been transferred.
¥ Activate the ringtone for unknown calls
(¢ page 68).
4. MSN is not assigned to internal subscriber or
is incorrect.
¥ Specify receive MSN (¢ page 72).
The handset does not ring as set.
The MSN is assigned a different ringtone.
¥ Set the ringtone melody for MSN on the
handset (¢ page 67).
Handset does not ring after setting up the
ISDN phone number (MSN).
The area prefix has been stored with the MSN.
¥ Save MSN without area code.
Some of the ISDN functions do not work as
specified.
ISDN functions are not enabled.
¥ Check with your network provider.
You cannot hear a ringtone/dialling tone from
the fixed line network.
ISDN cable may be faulty.
¥ Replace ISDN cable.
Error tone sounds after system PIN prompt.
You have entered the wrong system PIN.
¥ Reset the system PIN to 0000 (¢ page 74).
Forgotten system PIN.
¥ Reset the system PIN to 0000 (¢ page 74).
The other party cannot hear you.
You have pressed the mute button h.
The handset is "muted".
¥ Unmute the microphone (¢ page 34).
The number of the caller is not displayed
despite CLIP being set.
Calling Line Identification is not enabled.
¥ The caller should ask the network provider to
enable Calling Line Identification (CLI).
Refer to the notes on calling line display
¢ page 33.