What Is An OLT in Communication Engineering?

OLT is the abbreviation of optical line terminal and is an important terminal equipment of EPON network. The upstream bandwidth of EPON is 1.25G. The number of PON ports an OLT device has depends on how many PON boards are configured. A PON board has 8 or 16 PON ports.

                  HUAWEI 16PORT GPFD

The fiber outlet of the PON port is a single core that integrates transceiver and receiver, so it only occupies 1 core of the trunk fiber core. There are as many trunk cores as there are PON ports. Below the PON, 1:8, 1:16, and 1:32 optical splitters are hung. The optical splitters are divided into primary splitting and secondary splitting. The ONU is connected below the optical splitter. According to the splitting ratio and number, you can calculate how many users a PON port can carry