This varies by ISP, but try these combinations:
The ZTE F6640 is designed to deliver fast and reliable internet connectivity. With its gigabit Ethernet ports and Wi-Fi capabilities, users can enjoy: zte f6640
It is a capable router for speeds up to 500Mbps–600Mbps wirelessly. If you have a 1Gbps fiber plan, you will get full speed via Ethernet cable, but wireless speeds will be capped by Wi-Fi 5 technology. This varies by ISP, but try these combinations:
2 x RJ-11 POTS (FXS) ports for legacy telephone system integration. This varies by ISP