FUNCTION KEY
8.3.5
FUNCTION KEY
8.3.5.1
Field name
Contrast
Enable Backlight
Line Key Settings
Line: select Auto, SIP1, SIP2 in function key type. After you set it, you
pick up handset or hands-free, press this function key, and then you can use
the corresponding SIP line.
Function Key Settings
Function Key
explanation
Set contrast of screen.
Set enable/disable backlight.