DOCSIS-CMTS-CM-REG-STATUS is an IPDR Service Definition Schema that defines the Registration status of the CM as perceived by the CMTS. DOCSIS 3.0 Operations Support System Interface Specification CM-SP-OSSIv3.0-I01-061207, Annex N. The IPDR Record containing one CM registration status instance representing a single cable modem that has registered with the CMTS.