PORT (rx/tx)
bash
ztec300(config)#show pon power attenuation gpon-onu_1/{board}/{spl}:{port}
OLT ONU Attenuation
--------------------------------------------------------------------------
up Rx :-20.381(dbm) Tx:3.744(dbm) 24.125(dB)
down Tx :5.385(dbm) Rx:-16.613(dbm) 21.998(dB)