frUniDlciVcPeakOoSeqByteCount 1.3.6.1.4.1.562.2.4.1.71.5.3.12.1.20

This attribute displays the frame relay peak byte count of the out of sequence queue. This attribute records the maximum queue length of the out-of-sequenced queue. The counter can be used to deduce the message buffer requirement on a Vc.