Aastra 9000i Series Administrator's Manual page 314

Calibrate Screen (6739i only)
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.
Caibrating the Screen (6739i only)
IP Phone UI
Step Action
1 Press on the phone to enter the Options List
Options
2 Press the <Display> button.
3 Press the <Calibrate Screen> button.
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."
Retouch the screen in the correct location to continue.
The following message displays:
"Validating calibration data....please wait."
Then the following message and prompt displays:
"Sanity Check OK. Save changes?"
7 Press the <Yes> button to complete the recalibration, and the phone automatically restarts.
41-001343-01 Rev 02, Release 3.2.2 5-37