Patent ID: 8666255

Claim:
A transceiver, comprising: an interface; a transmission management unit connected to said interface; a driver connected to said transmission management unit; a management signal driving unit connected to said driver; an optical transmitter; an optical receiver; an amplifier connected to said optical receiver and to said transmission management unit; a management signal recovery unit connected to said optical receiver; a management unit connected to said management signal recovery unit, to said management signal driving unit, to said interface, and to said transmission management unit, wherein said management unit comprises a transmission data storage unit and a transmission command storage unit, said management unit configured to transmit data stored in said transmission data storage unit and a command stored in said transmission command storage unit to said management signal driving unit, said management unit further configured to store data received from said management signal recovery unit in said transmission data storage unit and a command received from said management signal recovery unit in said transmission command storage unit; a power storage unit connected to said management unit; a power supply unit connected to said management unit; and a voltage sensing unit that monitors a voltage and/or voltage status of a proximal host and/or said transceiver, and when (i) said voltage from said power supply unit is lower than normal or (ii) there is a sudden loss of power from said power supply unit to said proximal host and/or said transceiver, said management unit switches off said power supply unit and switches on said power storage unit and then said power storage unit supplies power to said transceiver for a period of time, and when an abnormal voltage status is detected in said transceiver, said voltage sensing unit sends a signal to a remote host to recognize or enable fault diagnosis over a link between said remote host and said transceiver.