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physical layer

   Also found in: Acronyms, Wikipedia 0.01 sec.
physical layer
The services in the OSI protocol stack (layer 1) that provide the transmission of bits over the network medium. Also known as the "PHY" layer. See OSI model.
(networking)physical layer - Layer one, the lowest layer in the OSI seven layer model. The physical layer encompasses details such as electrical and mechanical connections to the network, transmission of binary data as changing voltage levels on wires or similar concepts on other connectors, and data rates.

The physical layer is used by the data link layer.

Example physical layer protocols are CSMA/CD, token ring and bus.


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iTRACS, a leading data centre and cable management software developer, is promoting the use of effective Layer 1 management solutions such as its Physical Layer Manager product in response to reports showing widespread organizational neglect of Layer 1, the foundation of computer networks where physical devices such as cables, routers, and other physical devices interconnect.
The Georgia Technology Authority has selected iTRACS to provide software in its new data center for real-time monitoring and documentation of physical layer connections.
In the pursuit of the ultimate data throughput, the physical layer structures within the backplane take on critical roles.
 
 
 
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