Home Networking

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A community to help people learn, install, set up or troubleshoot their home network equipment and solutions.

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How the f*ck does a modem work? (alien.top)

submitted 11 months ago by EgoPoweredDreams@alien.top to c/homenetworking@selfhosted.forum

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Google searches have only yielded 5th grade level examples (“the modem talks between your ISP and your home network!”) or articles I would need a degree to understand. Can anyone provide an explanation that’s somewhere in between the two? I understand the fundamentals of how the Internet works, and how LAN works regarding a router and individual devices, but I’m curious to know more about the link between those.

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[–] One_Sense_5007@alien.top 1 points 11 months ago

It just changes the way the data looks so it can travel on a different cable. Modulates/demodulates the data/signal. The ISP doesn’t use Ethernet to transmit the data so to transmit the same data it needs to change they way it look. Kind of like taking normal book text and converting it into braille so a blind person can read it.