cctmXHistoryTxECInfoFrameSize 1.3.6.1.4.1.9.9.165.1.2.2.1.2

Negotiated maximum EC frame data payload size in the transmit direction. LAPM distinguishes between Rx and Tx. MNP will have the the same information frame size for Tx and Rx, cctmHistoryRxECInfoFrameSize.