A count of the number of times a frame transmission occurs from the corresponding 'Queue'. Increment the counter by one for each frame transmitted, which is an output of the 'Queue'. The 'Queue' marking matches the REPORT MPCP message Queue field as defined in [802.3ah], clause 64. This object is applicable for an OLT and an ONU. At the OLT, it has a distinct value for each virtual interface and for each queue. At the ONU, it has a distinct value for each queue. At the OLT the value should be zero. Discontinuities of this counter can occur at re-initialization of the management system and at other times, as indicated by the value of the ifCounterDiscontinuityTime object of the Interface MIB module.