Troubleshooting - Mitel DT690 User Manual

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TROUBLESHOOTING

This chapter contains information on how to solve common operational problems, see
table 12 on page 116, and warnings, see table on page 116, you may receive. Go
through the following lists if you encounter any problems. If the checklists do not solve
the problem, contact the system administrator. If others have similar problems, there
may be a system error.
Table 12 Operational problems
Fault
No display
No ringing
Not possible to switch off
handset by long pressing
the On-hook key
Handset, with in charger >
Other actions>switch off
enabled, is not switched off
when placed in charger
Error or warning messagesED error indication
Display shows
No access
No system
The phone beeps once a
minute (during max 30
minutes) with a low tone
followed by a high tone (if
enabled, the vibrator also
follows the beeps).
No flash driver was
found.
Note: This display message
is only shown in English.
Probable cause
The battery level is low or
the phone is defective.
The mute icon is shown
in the display, or ringer
volume set to silent, or the
phone is defective.
A handset restriction
preventing the user to
switch off the handset.
Probable cause
The network is in range, but
no access rights.
The phone is out of
coverage or phone is
defective.
Failed to read from flash
1424-EN/LZT 103 088 Uen J1 2016-03-18
Action or comment
Charge the battery.
Make a long press on
, or increase
volume.
Enable the parameter
Possible to switch off
handset, see the handset
configuration manual.
Action or comment
Switch off the phone and
then switch it on again.
Stop the beep by pressing
. Then go into
range, or contact the
system administrator.
(When you enter the
coverage area again, it
takes a few minutes before
the phone registers into the
system again.)
Send telephone for service