Before connecting anything, familiarize yourself with the physical ports and LEDs.
Here is the dirty little secret of the telecom industry. If you Google "ZTE F6107a Manual PDF," you will likely find: Zte F6107a Manual
Why? Because ZTE sells these in bulk to internet providers (like Frontier, Telmex, Claro, or local fiber co-ops). The ISP doesn't want you messing with the deep settings—they want you to call their tech support. The real manual is locked inside the technician’s laptop. you can find these settings:
If you have the full admin password (usually provided by an ISP technician), you can find these settings: Before connecting anything