AASTRA 6739i User Guide EN - Manual (Page 69)

Options Key
41-001317-05 REV01 – 06.2013
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Setting Brightness Timer
Calibrate Screen
The “Calibrate Screen” option allows you to calibrate the color touchscreen. This process makes fine adjustments to the
color screen on the phone for optimal display purposes.
Calibrating the Screen
IP Phone UI
1. Press on the phone to enter the Options List.
2. Press the <Display> key.
3. Press the <Brightness Timer> key. A text box displays.
4. Press the text box. A pop-up keyboard displays.
5. Press the “123” key and enter a value, in seconds, for the Brightness Timer. You can set the Brightness Timer from
0 to 7200 seconds. Default is 600 (10 minutes).
6. Press the to return to the previous menu or press the to return to the idle screen.
IP Phone UI
1. Press on the phone to enter the Options List.
2. Press the <Display> key.
3. Press the <Calibrate Screen> key.
A “Recalibrate touchscreen?” prompt displays.
4. Press “Yes” to continue or “No” to cancel the recalibration.
5. If you press “Yes”, the following messages display:
“Waiting for touchscreen activity to subside....”
6. Press the screen as indicated by each prompt using a SOFT fine tip stylus pen. Do not use a sharp object such
as an ink pen or pencil which may damage the touch screen:
“Touch the UPPER-LEFT corner of the screen.”
“Touch the UPPER-RIGHT corner of the screen.”
“Touch the LOWER-RIGHT corner of the screen.”
“Touch the LOWER-LEFT corner of the screen.”
If you touched the screen in the wrong location, the following message displays:
“Received unreliable data. You will be asked to touch the same point again.”
7. Retouch the screen in the correct location to continue.
When the recalibration is finished, the following message displays:
“Validating calibration data....please wait.”
8. Press the <Done> key to complete the recalibration, and return to the previous screen.
9. Press the to return to the previous menu or press the to return to the idle screen.