AgentCC@tg says to 電訊台
SCT-CORESWITCH-001#show int gi1/0/52 transceiver ITU Channel not available (Wavelength not available), Transceiver is internally calibrated. If device is externally calibrated, only calibrated values are printed. ++ : high alarm, + : high warning, - : low warning, -- : low alarm. NA or N/A: not applicable, Tx: transmit, Rx: receive. mA: milliamperes, dBm: decibels (milliwatts). Optical Optical Temperature Voltage Tx Power Rx Power Port (Celsius) (Volts) (dBm) (dBm) --------- ----------- ------- -------- -------- Gi1/0/52 33.5 3.28 -5.7 -11.6