This multicast address is used by the HMTS to address transponders that are to enable their contention when the row containing this object is processed. This address must already have been defined in hmtsMulticastAddrTable. If this address is not ff-ff-ff-ff-ff-ff, the multicast address should already be present in the multicast address table (commonMulticastAddressTable) of the appropriate transponders. There are two ways in which a multicast address can be programmed in that table: either directly by the EMS, or indirectly by filling the multicast address in in hmtsRevMulticastAddr such that the HMTS programs it into commonMulticastAddressTable. This object is non-volatile.