Troubleshooting
Troubleshooting
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When something does not work properly, you can initiate a telephone selftest to check if your telephone set is in order, or if the fault is in the system. For the Dialog 4222 Office phone, you can also check the firmware revision state of your phone.
To initiate a telephone selftest
Dialog 4220 Lite:
Press and hold simultaneously until a ring signal is heard. All the key lamps on the phone should be switched on during the selftest to indicate that each key lamp is OK.
Note: If you do not press #, the selftest is automatically finished after about 30 seconds.
Dialog 4222 Office:
Press and hold simultaneously until a ring signal is heard.
The display shows the firmware revision state and Selftest OK for a few seconds. If there is something wrong, a fault message appears. Inform your system administrator about the fault message.
All the key lamps on the phone (and connected extra key panel) should be switched on during the selftest to indicate that each key lamp is OK.
After a few seconds the display is checked (the display is completely dark). The display is OK when there are no light dot(s) or line(s). The light frame around the display is supposed to be there.
Note: If you do not press #, the selftest is automatically finished after about 30 seconds.
Dialog 4220 Lite/Dialog 4222 Office | 97 |