In most cases, yes, you can use your existing router with fiber optic internet, provided it has a WAN (Wide Area Network) Ethernet port and your ISP provides a modem/ONT with an Ethernet output. A fiber cable (drop) is run from a nearby terminal that could be either a pole or an underground box) to your home. The fiber is connected to an. Fiber internet transmits data using light signals through fiber-optic cables, which differs from traditional DSL or cable internet. Instead, users rely on an optical network unit, which serves as the gateway between the fiber line and home devices.
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