... of PON and Ethernet, low cost, high broadband, strong expansibility, flexible and fast service... EPON ONU1 Name: EPON ONU SFP2 CNCR ... .d. Support the distant hardware ONU to upgradee. Support four PON to combine randomly, and the protection function for the ... 2) ONU business flow classification: supports 802.1p and IP four-layer port number3) ONU encrypting: ONU supports automatic adaptive CTC churning ...