3.3 System Configure
-Keypad Type: Select different DTMF Keypad Type (For Advanced User)
-Dial Plan: Set DTMF digit limitation (0 is for any digits)
-Call Alive: Enable the function to check connection (Both side must support)
-Inter Digit Time: Set the DTMF inter digit time (second)
-Digit Type of End of Dialing: Select end of dialing type as none, OK, #, or * .
-H.450 Related Features: Enable/Disable H.450 function.
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