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8.3.5
Function Key
Function Key
Field name
explanation
Contrast
Set contrast of screen.
Enable Backlight
Set enable/disable backlight.
Function Key
Settings
key
Show the function key's serial number.
Type
Memory Key: settings can be stored in key storage
for each number, the standby or off-hook, select
the function keys on the keyboard can call this
number.
Line, set the dial mode (Auto, SIP1, SIP2, SIP3,