ZTE C320 GPON OLT 16 PORT

In Fiber to the Home (FTTH) networks OLT stands for Optical Line Terminal.
OLT is the starting point for the passive optical network, which is connected to a upstream core network.
The OLT convert, frame, and transmit signals for the PON network and to coordinate the optical network terminals.
PON works on wavelength division multiplexing using one wavelength for downstream traffic and one wavelength for upstream traffic on a single fiber. Both EPON and GPON operate similarly since they are a type of PON, but there are differences.
GPON provides:
Up to 2.5 Gbps
Reach: Up to 128 ONU per PON