| 摘要 |
<p>The present invention provides a data communication method in an optical network system, an optical network unit and an optical network system, where the method includes: receiving, through a first port of a first optical network unit, a first message sent by a first optical line terminal, where the first message is used to instruct the first optical network unit to switch to the second port from the first port; and after the first optical network unit switches to the second port from the first port according to the first message, performing data communication with a second optical line terminal through the second port. Since a data transmission speed between the first optical line terminal and the first optical network unit is higher than a data transmission speed between an OLT and an EMS, by using the data communication method, the data transmission speed is raised, it is ensured that switchover time between the OLTs is within 50 ms, and reliability of data communication is further improved.</p> |
