GPBH is Huawei OLT 8 GPON Ports Enhanced Board which used for Huawei MA5600T series OLT, such as MA5600T, MA5603T, MA5608T, MA5680T, MA5683T.
GPBH has two versions: H806GPBH, H807GPBH.
The main difference between GPBD and GPBH is that GPBH is enhanced version, and it supports ONU based queue shaping, but GPBD without this function.