Registration method and device, method for writing registration information, optical line terminal, and optical network unit

A method for registering an optical network unit, applied to an optical network unit and comprising:

• receiving registration configuration information issued by an optical line terminal and starting registration;
• wherein the registration configuration information is issued by the optical line terminal according to pre-acquired registration information of a to-be-registered optical network unit, and the registration information of the to-be-registered optical network unit is acquired before current registration starts;
• and
• performing configuration according to the registration configuration information.

A registration device, configured to connect an optical line terminal and comprising:

• a registration module, which is configured to complete registration for the optical line terminal to acquire registration information of the registration device;
• wherein response information loaded to the optical line terminal in a process of completing the registration is sent through a registration channel different from a traffic channel;
• a receiving module, which is configured to receive modification information corresponding to a to-be-registered optical network unit;
• and
• a modification module, which is configured to trigger, according to the modification information, the optical line terminal to modify the registration information of the registration device to registration information of the to-be-registered optical network unit.