Learn how to replace an ISP-provided ONT/ONU with a Nokia GPON SFP G-010S-A module running a modified version of OpenWRT 7.5.3. Follow a step-by-step guide covering the replacement process, configuration of the Nokia G-010S-A, troubleshooting PPPoE connection issues, and performance testing. Gain insights into accessing the LuCI web interface, configuring GPON settings, setting up PPPoE connections, and enabling interoperability mode. Explore SSH access to the Nokia G-010S-A and analyze GPON SFP CPU usage during speed tests. Discover where to purchase the Nokia GPON SFP G-010S-A and access helpful resources for further learning about OLT and ONT technologies.