1  –  MASK hex-value

 Specifies the mask applied to the incoming call data before it is
 tested.  Hex-value is a string of 2 to 32 hexadecimal digits.  By
 default, no mask is used.

2  –  VALUE hex-value

 Specifies the string used to test the incoming call data.  Hex-value
 is a string of 2 to 32 hexadecimal digits.  By default, no value is
 used.