DOCSIS-REC_3.5.1-A.1 is an auxiliary schema which defines IPDR Record information. DOCSIS 3.0 Operations Support System Interface Specification CM-SP-OSSIv3.0-I01-061207, Annex C. Contains the IPDR record type. 'Interim' identifies a running record. 'Stop' identifies the end of a record. 'Start' identifies the start of a record. 'Event' identifies a single message record containing all information. Interim Stop Start Event Contains a 64-bit count of milliseconds UTC time stamp at the time the data for the record was acquired.