PLANET GPON OLT SFP Quad (small form factor pluggable) Transceiver (GPL-GSFP) is specifically designed for high-performance integrated duplex data link over single mode optical fiber, and its single fiber bi-directional data links with symmetric 2.488Gbps Tx and 1.244Gbps Rx. It is compliant with ITU-T G.984.2 and hot pluggable. GPON SFU ONT with 1-Port Gigabit Interface (Download 2.5G/Upload 1.25G).