Set the Display Contrast
1With the phone on hook, press the MUTE button. The screen will display 1.
SET DATE
2Press the VOL+ button twice. The screen will display 3 LCD BRIGHT.
3Press the MUTE button. The screen will display BRIGHT and a series of “1” representing the display contrast.
4Use VOL+ and VOL- to adjust the display contrast.
5Press the MUTE button. The screen will display 3 LCD BRIGHT.
6Wait a few seconds and the screen will go to idle and display the date and time
Set the Interface
1With the phone on hook, press the MUTE button. The screen will display 1.
SET DATE
2Press the VOL+ button three times. The screen will display 4 INTERFACE.
3Press the MUTE button. The screen will display USB PSTN. Insure that PSTN is blinking.
4Press the MUTE button. The screen will display 4 INTERFACE.
5Wait a few seconds and the screen will go to idle and display the date and time.
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