Method for adjusting reception parameter of optical line terminal and optical line terminal

An optical line terminal, comprising an optical receiving component, a Media Access Control (MAC) layer chip, and a physical layer chip, wherein

• the MAC layer chip is configured to:
• determine a transmission rate of a to-perform-sending optical network unit (ONU), generate a reset signal before the to-perform-sending ONU sends an optical signal, adjust a signal characteristic of the reset signal according to the transmission rate, to generate an adjusted signal, and send the adjusted signal to the physical layer chip, wherein the reset signal is used to trigger the optical receiving component to perform a reset operation;
• the physical layer chip is configured to:
• receive the adjusted signal sent by the MAC layer chip, extract a signal characteristic of the adjusted signal, generate a first signal and a second signal according to the signal characteristic of the adjusted signal, send the first signal to the optical receiving component, and after the optical receiving component completes the reset operation, send the second signal to the optical receiving component, wherein the first signal indicates the reset signal, and the second signal indicates the transmission rate of the to-perform-sending ONU;
• and
• the optical receiving component is configured to:
• receive the first signal and the second signal that are sent by the physical layer chip, perform the reset operation according to the first signal, and after completing the reset operation, adjust a reception parameter according to the second signal.