This object specifies the amount of time for which the line
signal should persist to be valid.
The value of ccasLSTCASDebounceTimer must be less than or
equal the value of following objects:
ccasILSMinMakeTime,
ccasILSMaxMakeTime,
ccasILSMinBreakTime,
ccasILSMaxBreakTime in ccasIfExtIncomingLineSignalTable.