This object contains the CBR specific VC Statistics table. There is one cbrDS1E1ATMStatsEntry associated for each CBR VC connection provisioned within the shelf. This table uses vcPortSlot, vcPortPort, vcPortTransmitVpi, and vcPortTransmitVci as an index which is defined in the vcBaseTable of the C-PRODUCT BASE MIB. This index value uniquely identifies the CBR VC connection to which this entry is applicable. Additional VC statistics information is available in the associated Circuit Emulation Service (CES) MIB defined by the ATM forum. NOTE: The associated Circuit Emulation Service (CES) MIB defined by the ATM forum restricts the VC index to a single 32-bit scalar value. In support of this MIB, the CES MIB index retains the same indexing information as the enterprise MIB but has been bit-mapped using the following construction: vcPortPort bit 0..3 vcPortSlot bit 4..8 vcPortTransmitVci bit 9..23 vcPortTransmitVpi bit 24..31