The differences between HGU ONU and SFU ONU

The SFU ONU operates in bridge mode, providing OLT registration, VLAN, and data transmission functions.
The HGU ONU supports routing mode, offering WAN, DHCP, PPPoE, and other functionalities.
If you have your own router, it is recommended to use the SFU ONU, as professional tasks should be handled by specialized equipment.
If you do not have your own router, you can try the HGU ONU, which provides multiple functions in a single ONU.