This attribute specifies which transmit interval opportunities the CM omits for upstream transmission requests and packet transmissions. This object takes its default value for downstream Service Flows. Unless otherwise indicated, a bit value of 1 means that a CM must not use that opportunity for upstream transmission. The format of this string enumerated the bits from 0 to 31 from left to right, for example bit 0 corresponds to the left most bit of the fourth octet. (octets numbered from right to left). The bit positions are defined as follows: 'broadcastReqOpp' all CMs broadcast request opportunities 'priorityReqMulticastReq' priority request multicast request opportunities 'reqDataForReq' request/data opportunities for requests 'reqDataForData' request/data opportunities for data 'piggybackReqWithData' piggyback requests with data 'concatenateData' concatenate data 'fragmentData' fragment data 'suppressPayloadHeaders' suppress payload headers 'dropPktsExceedUGSize' A value of 1 means that the service flow must drop packets that do not fit in the Unsolicited Grant size. If the referenced parameter is not present in a QOS Parameter Set, the value of this object is reported as '00000000'H.