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Can I Plug Ethernet Directly Into ONT?

Published in Internet Connections 2 mins read

No, you cannot directly plug an Ethernet device into an ONT (Optical Network Terminal) for internet access. While the ONT does have Ethernet ports, they are intended to connect to a router, not directly to end-user devices like computers.

Understanding the Role of the ONT and Router

The ONT is essentially a modem that converts the fiber optic signal into a digital signal your devices can understand. Here's how it works with your router:

Component Function
ONT Converts fiber optic signal into a digital signal; acts as a modem.
Router Connects to the ONT; broadcasts WiFi and manages network traffic.
End-User Devices Devices such as computers, smartphones, or gaming consoles.

Connecting Your Devices

  • Router Connection: The ONT typically has an Ethernet port that connects to your router's internet/WAN port.
  • Device Connections:
    • Ethernet: Your devices can connect to the router using Ethernet cables plugged into the router's LAN ports.
    • WiFi: Your router will also broadcast a WiFi signal that your devices can connect to wirelessly.

According to the reference, you can connect your router to the ONT via an Ethernet port on the ONT or an Ethernet jack on the wall. Devices then connect to the router via Ethernet cables, or wirelessly using the router’s WiFi. (30-Sept-2022)

Why You Need a Router

  • IP Address Management: The router assigns unique IP addresses to each device on your network.
  • Network Management: The router controls traffic flow, security, and allows for more than one device to share a single internet connection.
  • WiFi Broadcasting: The router enables devices to connect to the internet wirelessly.
  • Security: The router includes a firewall to protect your devices from potential security threats.

Practical Insight

While the ONT is the gateway to your internet service, the router handles the distribution and management of that connection within your home or office network. Trying to directly connect a computer to the ONT may not work, or if it does, it would not provide a practical and manageable network configuration.