OLT-200 User Manual - CTC Union Technologies Co.,Ltd.

EPON OLT User Guide2.1. EPON UnitEPU is the line card unit. There are two PON ports and two associated SNI portsin an EPU card. Each PON port can connect to 32 ONUs through the optical splitter.Therefore, OLT200 can connect to ONUs at the same time. To provide a convenientway integrating OLT200 into the existing network architecture, two types of EPU areprovided. One is EPON 21-RJ45, whose SNI ports are in RJ45 type. The other isEPON 21-LC, whose SNI ports are in SFP type.Panels of EPON 21-RJ45 and EPON 21-LC are shown in Figure 5 and Figure 6.They are different only in the type of the SNI. To ease the identification, PON portsand SNI ports are classified into two groups (A and B). Therefore, two groups ofLEDs are also provided for status checking. EPU also provides one LED (TAM) fortransmission alarm notification, one LED (ALM) for system general alarm, and oneLED (PWR) for the status of the power.Figure 5.21-RJ45 EPU PanelFigure 6.21-LC EPU PanelThe LED indications of EPU are described as follows:ED indications Status LED13