DOCSIS-CMTS-US-UTIL is an auxiliary schema that defines CMTS upstream logical channel interface utilization statistics. Revision History: 3.5.1-A.1 Initial version. 3.5.1-A.2 Revised version includes ECN OSSIv3.0-N-10.0914-3 and OSSIv3.0-N-10.0928-1 and published as I12. 3.5.1-A.3 Revised version includes ECN OSSIv3.0-N-10.0968-2 and published as I14. 3.7-A.4 OSSIDM-26 Added constraints to UsUtilInterval 3.7-A.4.0.0 New revision naming convention. 3.7-A.4.0.1 Update namespace from mibs to www. Fix import versions. Error corrections announced via errata sheet attached to CM-SP-OSSIv3.0-C01-171207. Contact: Postal: Cable Television Laboratories, Inc. 858 Coal Creek Circle Louisville, Colorado 80027-9750 U.S.A. Phone: +1 303-661-9100 Fax: +1 303-661-9199 Email: data-model-support@cablelabs.com Copyright 2019-2026 Cable Television Laboratories, Inc. All rights reserved. DOCSIS 3.0 Operations Support System Interface Specification CM-SP-OSSIv3.0-C01-171207. The ifIndex from the Interfaces Group MIB for the CMTS upstream logical channel interface. Contains the first 50 characters of the ifName from the Interfaces Group MIB for the row entry corresponding to the CMTS upstream interface. The US channel id as defined in docsIf3MdChCfgChId. The time interval, in seconds, over which the channel utilization index is calculated. The calculated and truncated utilization index percentage for the downstream interface. The current count, from CMTS initialization, of all mini-slots defined for this upstream logical channel interface. This count includes all IUCs and SIDs, even those allocated to the NULL SID for a logical channel that is inactive. The current count, from CMTS initialization, of unicast granted mini-slots on the upstream logical channel regardless of burst type. Unicast granted mini-slots are those in which the CMTS assigned bandwidth to any unicast SID on the logical channel. However, this object does not include mini-slots for reserved IUCs, or grants to SIDs designated as meaning 'no CM'. The current count, from CMTS initialization, of contention mini-slots defined for this upstream logical channel. This count includes all mini-slots assigned to a broadcast or multicast SID on the logical channel. The current count, from CMTS initialization, of contention mini-slots utilized on the upstream logical channel. For contention regions, utilized mini-slots are those in which the CMTS correctly received an upstream burst from any CM on the upstream logical channel. The current count, from CMTS initialization, of collision contention mini-slots on the upstream logical channel. For contention regions, these are the mini-slots applicable to burst that the CMTS detected but could not correctly receive. The current count, from CMTS initialization, of contention request mini-slots defined for this upstream logical channel. This count includes all mini-slots for IUC1 assigned to a broadcast or multicast SID on the logical channel. The current count, from CMTS initialization, of contention request mini-slots utilized on this upstream logical channel. This count includes all contention mini-slots for UIC1 applicable to bursts that the CMTS correctly received. The current count, from CMTS initialization, of contention request mini-slots subjected to collisions on this upstream logical channel. This includes all contention mini-slots for IUC1 applicable to bursts that the CMTS detected but could not correctly receive. The current count, from CMTS initialization, of contention request data mini-slots defined for this upstream logical channel. This count includes all mini-slots for IUC2 assigned to a broadcast or multicast SID on the logical channel. The current count, from CMTS initialization, of contention request data mini-slots utilized on this upstream logical channel. This includes all contention mini-slots for IUC2 applicable to bursts that the CMTS correctly received. The current count, from CMTS initialization, of contention request data mini-slots subjected to collisions on this upstream logical channel. This includes all contention mini-slots for IUC2 applicable bursts that the CMTS detected but could not correctly receive. The current count, from CMTS initialization, of initial maintenance mini-slots defined for this upstream logical channel. This count includes all mini-slots for IUC3 assigned to a broadcast or multicast SID on the logical channel. The current count, from CMTS initialization, of initial maintenance mini-slots utilized on this upstream logical channel. This includes all contention mini-slots for IUC3 applicable to bursts that the CMTS correctly received. The current count, from CMTS initialization, of contention initial maintenance mini-slots subjected to collisions on this upstream logical channel. This includes all contention mini-slots for IUC3 applicable to bursts that the CMTS detected but could not correctly receive.