GPFD is a 16 port GPON interface card of Huawei OLT, provide GPON service access from ONT. GPFD can maximum access 16*128 GPON subscribers. GPFD has different part number like H80D00GPFD01, H80D00GPFD02 etc, but basically you only need to identity H802GPFD, H803GPFD, H805GPFD, H806GPFD version, and with B+ or C+/C++ SFP module.