DOCSIS-CMTS-CM-PARTIAL is an auxiliary schema that defines the CM's partial channel and partial service status information for OFDM and OFDMA channels. Revision History: 3.5.1-B.1 Initial version. 3.5.1-B.2 Per ECN CCAP-OSSIv3.1-N-20.2110-2: Deprecated NumPartialChanIncidents. Deleted PartialChanReasonType enumerations invalidDpd(19) and usOfdmaProfileFailure(25). 3.7-B.2.0.0 New revision naming convention. 3.7-B.3.0.0 OSSIDM-183 Updated PartialChanReasonType enumeration literal 21 from lostFecLocPlc to plcFailure. Updated descriptions. Added enumerations 3 and 4 for PartialSvcReasonType. Update namespace from mibs to www. Fix import versions. Revised version includes ECN CCAP-OSSIv3.1-26.2430-1. 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 3.1 CCAP Operations Support System Interface Specification CCAP-OSSIv3.1-26.2430-1 This data type enumerates the type of channel issue which the MAC Layer indicates is causing the CM to be in DOCSIS 3.0 Partial Service mode. other none partialSvcDsOnlyImpaired partialSvcUsOnlyImpaired partialSvcDsAndUsImpaired This data type enumerates the CM-STATUS events which a CM can utilize to report a Partial Service situation. none Used when the channel is not in partial service secondaryChanMddTimeout Receipt of a CM-STATUS event type 1 indicating secondary channel MDD timeout lostFecLock Receipt of a CM-STATUS event type 2 indicating QAM/FEC lock failure on a downstream channel iuc13CwErrors Codeword errors are over limit on IUC 13 of an OFDMA channel. The criteria for this decision are vendor-specific other Partial service is the result of a reason not described by the other defined enumerations This data type enumerates the CM-STATUS events which a CM can utilize to report a Partial Channel situation. none dsOfdmProfileFailure dpdMismatch ncpProfileFailure plcFailure This data type enumerates each of the possible profiles or channel attributes which can contribute to an OFDM channel being considered a Partial Channel by the MAC layer. As more than one of these error conditions can exist at the same time this data type is based on EnumBits. The bits from low to high are: Bit 0: fecErrorsDsProfile Bit 1: fecErrorsNcpProfile Bit 2: fecErrorsPlc Bit 3: lostFecLockUsProfile This attribute indicates the type of bonding group issue that this CM is experiencing, based on what the MAC-layer shows. Information Model Mapping: CM-SP-CCAP-OSSIv3.1 CmtsCmRegStatus::PartialSvcState This attribute is a bit-field which indicates the type of OFDM channel issue that this CM is experiencing, based on what the MAC-layer shows. This object is applicable to DOCSIS 3.1 modems but not to prior versions of DOCSIS modems. If the CM is a pre-DOCSIS 3.1 modem, the CMTS returns no bits set (0x0). Information Model Mapping: CM-SP-CCAP-OSSIv3.1 CmtsCmRegStatus::PartialChanState This attribute returns the current CM-STATUS Event Code which indicates the reason that this CM is experiencing Partial Service with a bonding group utilizing this OFDMA upstream channel. A value of 0 indicates that the CM is not currently experiencing Partial Service involving this OFDMA upstream channel. Information Model Mapping: CM-SP-CCAP-OSSIv3.1 CmtsCmUsOfdmaChannelStatus::CurPartialSvcReasonCode This attribute returns the date and time when the MAC indicated that this CM recovered from its most recent Partial Service incident on this downstream OFDM/upstream OFDMA channel. Information Model Mapping: CM-SP-CCAP-OSSIv3.1 CmtsCmUsOfdmaChannelStatus::LastPartialSvcTime This attribute returns the last CM-STATUS Event Code which indicates the reason that this CM was experiencing Partial Service on this downstream OFDM/upstream OFDMA channel. (Note: if the CM is currently experiencing Partial Service, this is the Event Code from the previous Partial Service event.) A value of 0 indicates that the CM has not experienced Partial Service involving this OFDM/OFDMA channel during the CCAP's history of this CM. Information Model Mapping: CM-SP-CCAP-OSSIv3.1 CmtsCmUsOfdmaChannelStatus::LastPartialSvcReasonCode This attribute returns the number of Partial Service incidents the MAC layer has reported for this CM on this downstream OFDM/upstream OFDMA channel. Information Model Mapping: CM-SP-CCAP-OSSIv3.1 CmtsCmUsOfdmaChannelStatus::NumPartialSvcIncidents This attributes returns the number of Partial Channel incidents the MAC layer has reported for this CM on this downstream OFDM channel. Information Model Mapping: CM-SP-CCAP-OSSIv3.1 CmtsCmDsOfdmChannelStatus::NumPartialChanIncidents This attribute returns the current CM-STATUS Event Code which indicates the reason that this CM is in a Partial Channel state utilizing this Profile on this downstream OFDM/upstream OFDMA channel. A value of 0 indicates that the CM is not currently experiencing Partial Channel involving this Profile on this OFDM/OFDMA channel. Information Model Mapping: CM-SP-CCAP-OSSIv3.1 CmtsCmDsOfdmChannelStatus::PartialChanReasonCode This attributes returns the date and time when the MAC indicated that this CM recovered from its most recent Partial Channel incident for this Profile on this downstream OFDM/upstream OFDMA channel. Information Model Mapping: CM-SP-CCAP-OSSIv3.1 CmtsCmDsOfdmChannelStatus::LastPartialChanTime This attributes returns the last CM-STATUS Event Code which indicates the reason that this CM was experiencing a Partial Channel event for this Profile on this downstream OFDM/upstream OFDMA channel. A value of 0 indicates that the CM has not experienced a Partial Channel incident involving this Profile on this OFDM/OFDMA channel during the CCAP's maintained history of this CM. Information Model Mapping: CM-SP-CCAP-OSSIv3.1 CmtsCmDsOfdmChannelStatus::LastPartialChanReasonCode