physical layer


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physical layer

(networking)
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.

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 and physical layer switch.
References in periodicals archive ?
iTRACS' Physical Layer Manager software assists organizations in adopting the best practices recommended in the IT Infrastructure Library (ITIL) configuration management database (CMDB) guidelines.
National Semiconductor is a technology leader in the development of analog physical layer devices, and Atmel is a leader in storage and broadband communications solutions.
11g physical layer silicon IP is delivered as a synthesizable RTL (Verilog and VHDL) core, along with extensive documentation, verification test benches and floating and fixed point simulation models.
Instead of trying to create an entirely new physical layer, SAS has a physical layer similar to 10-Gigabit Ethernet's Attachment Unit Interface specification (XAUI).
Analogue devices and subsystems provider National Semiconductor has introduced the Mobile Pixel Link (MPL) physical layer, a new serial interface for portable devices.
Beyond automated work-order management and guided moves, adds and changes (MACs), physical layer network-management systems can offer return-on-investment benefits that reduce the total cost of network ownership.
OnPATH Technologies, a provider of leading automated connectivity solutions that enable a virtual infrastructure layer (VIL), utilized 20 years of experience solving complex data center physical layer challenges to compile a list of infrastructure insights that highlight common industry misconceptions about the physical layer.
iTRACSCO Physical Layer Manager software assists organizations in adopting the best practices recommended in the IT Infrastructure Library (ITIL) configuration management database (CMDB) guidelines.
The unique physical layer combined with the throughput advantages realized by statistical multiplexing via a packet-based air interface enables the flash-OFDM system to dramatically reduce the cost per mega byte of data delivered.
This confusion is especially acute in terms of the media used (copper and optical interconnects), as well as the physical layer building blocks (i.
has licensed the Diamond Standard 108Mini processor core for an upcoming 10 Gigabit Ethernet physical layer transceiver (PHY) chip design.
Network Elements' highly integrated modules are comprised of state-of-the-art optics, high-speed electronics and software, giving equipment providers a complete system for physical layer connectivity.