This object indicates CAS signal name corresponding to the
ccasILSSignalNameIndex.
The media gateway uses ccasILSRxPattern along with following
objects:
ccasILSMatchedRxPattern
ccasILSMatchedTxPattern
ccasILSMinMakeTime
ccasILSMaxMakeTime
ccasILSMinBreakTime
ccasILSMaxBreakTime
to determine a ccasILSSignalName.