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OC-48 is also used as a transmission speed for tributaries from OC-192 nodes in order to optimize card slot utilization where lower speed deployments are used. Slower cards that drop to OC-12, OC-3 or STS-1 speeds are more commonly found on OC-48 terminals, where use of these cards on an OC-192 terminal would not allow for full use of the ...
Internet backbone. Each line is drawn between two nodes, representing two IP addresses. This is a small look at the backbone of the Internet. The Internet backbone is the principal data routes between large, strategically interconnected computer networks and core routers of the Internet. These data routes are hosted by commercial, government ...
Fiber-optic communication is a method of transmitting information from one place to another by sending pulses of infrared or visible light through an optical fiber. [1][2] The light is a form of carrier wave that is modulated to carry information. [3] Fiber is preferred over electrical cabling when high bandwidth, long distance, or immunity to ...
An optical transport network (OTN) is a digital wrapper that encapsulates frames of data, to allow multiple data sources to be sent on the same channel. This creates an optical virtual private network for each client signal. ITU-T defines an optical transport network as a set of optical network elements (ONE) connected by optical fiber links ...
AT&T Internet provides internet access to computers connected on-premises via Ethernet cabling or Wi-Fi from the included residential gateway or DSL modem. AT&T Fiber, or as it is known AT&T Internet powered by Fiber, [2] provides fiber to the home (FTTH) service in select markets. Historically a form of AT&T Fiber Internet launched in the fall ...
The equipment used for communications over multi-mode optical fiber is less expensive than that for single-mode optical fiber. [1] Typical transmission speed and distance limits are 100 Mbit/s for distances up to 2 km (), 1 Gbit/s up to 1000 m, and 10 Gbit/s up to 550 m.
The equipment that ties together the departmental networks constitutes the network backbone. Another example of a backbone network is the Internet backbone, which is a massive, global system of fiber-optic cable and optical networking that carry the bulk of data between wide area networks (WANs), metro, regional, national and transoceanic networks.
A passive optical network is a form of fiber-optic access network. Bandwidth is shared among users of a PON. [6] [7] In most cases, downstream signals are broadcast to all premises sharing multiple fibers. Encryption can prevent eavesdropping. Upstream signals are combined using a multiple access protocol, usually time-division multiple access ...