Troubleshooting - Aastra DT412 User Manual

MD Evolution – Cordless DT412 / DT422 / DT432

Troubleshooting

This section contains information on how to solve common
operational problems, and warnings you may receive.
Go through the following lists if you encounter any problems. If this
checklist does not solve the problem, contact your system
administrator. If others have similar problems, there may be a
system error.
Fault / Display
The phone does
not switch on
No display
No ringing
Battery icon flashes
Call icon is
switched off after
2 seconds
Lamp shows
steady light
When adding
names to the
Phonebook, an
error beep sounds
Wrong SIM
Check SIM card
Probable cause
The battery is low.
The battery is low
or the phone is
defective.
The Ringer off icon
is on or the phone
is defective.
The battery is low
or the phone is
defective.
The battery is low
or the phone is
defective.
The phone is
defective.
The memory is full,
you cannot add
new names.
The SIM card is not
compatible with the
software version of
the phone.
The SIM card is
missing.
Troubleshooting
Action or
comment
Charge the battery.
Charge the battery
or contact system
administrator.
Off icon on = Turn
on the ringing
signal.
Charge the battery
or contact system
administrator.
Charge the battery
or contact system
administrator.
Contact system
administrator.
Delete a name.
Contact system
administrator.
Insert the SIM card
or contact system
administrator.
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