The combination of this object and the corresponding
instance of csfFilterCallingParty is one selection
criteria for this record. To match this selection criteria,
a failed connection setup must have a Calling Party Address
which equals the value of csfFilterCallingParty for
all bit positions identified by the value of
csfFilterCallingPartyMask. If the mask value is
shorter than the length of csfFilterCallingParty,
then it is extended with zero bits to be the required length.
If the default value for this object is retained then the
rejected call will match this filtering criterion if and
only if the calling address in the call matches the
csfFilterCallingParty for this entry.