Optical line terminal GPON C-Data OLT FD1608GS-R1.
Producer: C-Data (China),
model: FD1608GS-R1,
technology: GPON 8 ports,
up to 128 subscribers per port,
high performance,
compatible with ONT WT-G2 (and their modifications under others™), ONT ZTE F660, F601.