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#Broadband #Wifi #Router #ONU #ITGHOR #Hathazari


Do you know the GPON? If you have known, you should know what is an optical network unit (ONU). Here is an overview of the optical network unit. By the way, GPON means Gigabit Passive Optical Network. You can learn more from this article: GPON vs. EPON.
Concept of ONU
Optical Network Unit, the IEEE term for what is called an Optical Network Terminal in ITU-T terminology.
The ONU is divided into an active optical network unit and a passive optical network unit. Generally, the devices equipped with optical receivers, uplink optical transmitters, and multiple bridge amplifier network monitoring equipment, are called optical nodes.
The PON connects to the OLT, using a single optical fiber and the OLT connects to the ONU. ONU realizes "triple-play" applications by providing services such as data, IPTV (interactive network television) and voice (using IAD and Integrated Access Device).

What is a router?
A router is a device that connects two or more packet-switched networks or subnetworks. It serves two primary functions: managing traffic between these networks by forwarding data packets to their intended IP addresses, and allowing multiple devices to use the same Internet connection.
There are several types of routers, but most routers pass data between LANs (local area networks) and WANs (wide area networks). A LAN is a group of connected devices restricted to a specific geographic area. A LAN usually requires a single router.
A WAN, by contrast, is a large network spread out over a vast geographic area. Large organizations and companies that operate in multiple locations across the country, for instance, will need separate LANs for each location, which then connect to the other LANs to form a WAN. Because a WAN is distributed over a large area, it often necessitates multiple routers and switches*.

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