This OID specifies how many of the least significant bits in the address field should be ignored when comparing addresses in Q.933 protocol setup and connect messages. Network engineers adjust this value when they want flexible address matching that allows for partial address wildcarding, such as ignoring the last few digits of a phone number. For example, a value of 4 means the system ignores the last 4 bits of the address during comparison, allowing calls from slightly different address suffixes to be treated as equivalent.