AASTRA 4225 for MX-ONE Telephony Switch - Manual (Page 134)

Troubleshooting
Dialog 4223 Professional/Dialog 4225 Vision 134
To check the firmware revision state
When your system administrator asks for the firmware revision state of
your phone:
Dialog 4223 Professional:
PhoneSet
Press (see display).
If
PhoneSet is not shown, press more... until it appears.
Select
Press (see display).
Down
or
Up
Press to frame Firmware Indication (see display).
Select
Press (see display).
The display shows the firmware revision state for your phone.
Exit
Press to exit (see display).
Note: If you do not press Exit , the check is automatically
finished after about 30 seconds.
Dialog 4225 Vision:
Å
Select PhoneSet in the top menu (see display).
Down
or
Up
Press to frame Firmware Indication (see display).
Select
Press (see display).
The display shows the firmware revision state for your phone.
Exit
Press to exit (see display).
Note: If you do not press Exit , the check is automatically
finished after about 30 seconds.