This table is used to initiate the OPT-REQ message for a given OFDM DS channel. The message and resulting tests and requirements are defined in the OPT-REQ TLV Encodings section of the MULPI Spec. To use the object, the Operator or PMA Application uses the CM MAC address (CmMacAddr), the downstream OFDM channel configuration index (DsOfdmChannelCfgIndex), and downstream OFDM profile configuration identifier (DsOfdmProfileCfgProfileId) as the keys to initiate a test. The specific tests that are defined in MULPI are accessed with the ProfileTest attribute. This attribute is a BITS data type and will allow one or more of the OPT tests to be configured to be performed by the CM. Due to the nature of the ProfileTest attribute, one or more tests can be requested in a single message and thus different amounts of data need to be configured in order for the OPT Message to have the required TLVs. Some of these tests perform evaluations of thresholds or margins. To facilitate these evaluations by the CM, these values are defined in the test request or the OptMerThresholdCfg table. To successfully initiate a test, the DsOfdmChanCfgIndex and an associated DsOfdmProfCfgId are required. The CCAP should reject a request to initiate an OPT test when the DsOfdmChannelCfgIndex does not exist, or is not currently in use by the CM. The CCAP should reject a request if the referenced DsOfdmProfileCfgProfileId is in use on the CM,or the value does not exist in the profiles associated with the referenced DsOfdmChannelCfgIndex. The CCAP should reject a request to run an OPT test on CM that is not operational. The CCAP should reject starting an OPT (i.e., setting OpCode to start(2) in the OptReq object) for a unique combination of a CM, OFDM channel, and profile if there is already an OPT running (i.e., running (i.e., the value of OptResp::Status is testing(1)) for any profile on the same CM and OFDM channel. The CCAP should reject an OPT request that combines NCP tests (selected by OptReq::ProfileTest bit 5 and/or bit 6) with any other tests. The CCAP may support simultaneous Downstream OPT tests on more than one OFDM channel at a time. This object supports the creation and deletion of multiple instances.