| 摘要 |
The present invention provides a method for protection switching of a passive optical network (PON) and a PON system for the same, which normally uses a communication service using different wavelengths and which can enable a continuous communication service by protection switching to a normal optical line terminal (OLT) in the event of communication failure by using two optical line terminals (OLTs) in the PON. The method for protection switching of a PON according to the present invention comprises: a first step for allowing first and second OLTs to respectively check the communication status with a plurality of ONUs; a second step for allowing the first and second OLTs to respectively communicate with the ONUs using different wavelengths if the communication status with the ONUs are all normal; and a third step for allowing a normal OLT to communicate with the ONUs using the different wavelengths if communication failure occurs between one of the first and second OLTs and the ONUs. [Reference numerals] (110,120) First OLT |
