Description: 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.