... deployment. GPON features: Class B+ optical module. Security authentication mode: SN, password or SN+password. Upstream/downstream FEC. GEM ... port mapping mode: VLAN, 802.1p, VLAN+ 802.1p, IPToS, physical port ... integrated system on chipset (SOC) solution, in which, a single chip integrates with PON, voice, gateway and LSW modules. Specifications ...