What's ONU?

Author: Hosecom Release time: 2024-01-10 06:02:11 View number: 3741

ONU (Optical Network Unit), translated into Chinese as optical network unit, is a terminal device in a passive optical fiber network. ONU is usually deployed at the user end to receive optical fiber signals and convert them into electrical signals to connect user equipment, such as computers, phones or televisions.

The following are the main features and functions of ONU:

Optical signal reception: ONU is responsible for receiving optical signals from optical fiber OLT (Optical Line Terminal) in the optical fiber network. OLT is usually located at the center of the network and is responsible for the forwarding and management of optical fiber signals.
Signal conversion: ONU converts the received optical signals into electrical signals in order to connect to user equipment. This conversion process usually involves a photoelectric converter, which converts the optical signal into an electrical signal.
User equipment connection: ONU transmits the converted electrical signals to user equipment, such as computers, routers, phones, etc., through the Ethernet interface or other standard interfaces.
Data transmission: ONU is responsible for converting data from electrical signals to optical signals at the user end and sending them back to the OLT to achieve two-way fiber optic communication.
User management: ONU usually manages user-related information, such as MAC address, user account, etc., to ensure the security and effective operation of the network.

ONU is one of the key devices in passive optical fiber networks, especially in optical fiber-based broadband access networks, such as EPON (Ethernet Passive Optical Network) and GPON (Gigabit Passive Optical Network) and other technologies. By introducing optical fiber signals into users' homes or businesses, ONU can provide high-bandwidth, low-latency broadband access services, suitable for various application scenarios.

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What's ONU?

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