A cable network operates by transmitting data signals from your internet provider through coaxial cables to your modem, which then distributes the internet connection to your devices.
Here's a more detailed breakdown:
1. Data Originates with Your Internet Provider (ISP)
- Your Internet Service Provider (ISP) is the starting point. They manage a network of high-capacity connections that serve a large geographical area.
2. Transmission via Coaxial Cables
- The ISP transmits data signals through a network of coaxial cables. These cables are specifically designed to carry high-frequency signals over long distances with minimal signal loss. These cables are either buried underground or run aerially on utility poles.
3. Reaching Your Modem
- The coaxial cable enters your home and connects directly to your cable modem.
4. Modem's Role: Signal Demodulation
- The cable modem demodulates the signal from the coaxial cable, converting it into a digital format that your devices can understand. This is a two-way process; the modem also modulates signals from your devices back for transmission to the ISP.
5. Distribution within Your Home
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From the modem, the internet connection is typically distributed to your devices in one of two ways:
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Wired Connection (Ethernet): An Ethernet cable can connect directly from the modem to a computer or other device for a stable, high-speed connection. Often, the cable modem is connected to a separate router via ethernet.
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Wireless Connection (Wi-Fi): The modem (or a separate router connected to the modem) emits a Wi-Fi signal, allowing devices within range to connect wirelessly.
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6. Router's Role (If Applicable):
- A router acts as a traffic director, managing the flow of data between your devices and the internet. It assigns IP addresses to each device on your network, providing security and efficient data routing. It also broadcasts the Wi-Fi signal.
In summary: The cable network relies on coaxial cables to transmit data between your ISP and your home modem. The modem then converts the signal and distributes the internet connection to your devices, either through wired Ethernet connections or wirelessly via Wi-Fi.
