In a fiber access network, ONU (Optical Network Unit) and ONT (Optical Network Terminal) are two different devices used to connect end users to the fiber transmission network. Here are some key differences between them:
Defining the difference:
ONU is a device located at the user side and is usually connected to the operator's backbone optical fiber network.
The main function of ONU is to convert optical signals from ODN (optical distribution network) into electrical signals and further process these signals to provide various services such as Internet, telephone and IPTV to end users.
ONT focuses more on describing the devices at the end user end, directly connecting to the devices in the user's home or office environment.
In FTTH (fiber to the home) applications, ONT often refers to the "optical modem" installed in the user's home. It can complete the optical and electrical signal conversion and provide multiple interfaces for users to connect to terminal devices such as computers, telephones, and TV set-top boxes.
Application scenarios and locations:
In FTTH scenarios, the concepts of ONU and ONT are sometimes combined into one, because the optical fiber can directly reach the user's home. At this time, the functions of the ONU are integrated into the ONT device, and the two are actually one physical device.
In FTTB (fiber to the building) or other more complex network layouts, ONU may be placed in the computer room or corridor of the building and is responsible for aggregating information from multiple users, while ONT is located in each user's home or office. As the last link for users to access the network personally.
Functional level:
ONU is more embodied at the network level and is responsible for optical signal conversion and business processing between the access layer and aggregation layer.
ONT is more focused on the user access level and is a device that truly interacts directly with user applications.
To sum up, ONUs and ONTs are usually associated together in optical fiber access networks, but their roles and locations may be different on different occasions. ONT is often a component of ONU, especially in FTTH environment. People often regard the two as different names for the same device. In some complex network structures, ONU can be understood as a first-level device closer to the core of the network, while ONT is a device closer to the user after the ONU.
Related Products
Router Wifi ONU AC1200 Dual Band Wifi 4 Ports Gigabit LAN Port 2USB Pots Fiber Modem
$27.25$31.50
Wifi6 Gpon ONU ONT AX3000 FTTH 3000Mbps 2.4G 5G Dual Band Wifi Wireless Mesh Router Fiber Optical Unit
$32.50$38.00
5g Router CPE Mesh Outdoor Indoor AX3000 Dual Band Multi Sim Card Slot wireless Wifi 6 with 13 Antennas
$363.00$405.00
4GE 1POTS(VOIP) AC1200 WiFi5 Dual Mode Adaptive XPON ONT ONU Modem
-400x400.jpg)
