Margaret Rouse is an award-winning technical writer and teacher known for her ability to explain complex technical subjects simply to a non-technical, business audience. Over…
Medium dependent interface (MDI) refers to an Ethernet port connection that is used to connect network devices (hubs and switches) with other hubs and switches without the use of a crossover cable or null modem.
Also known as an MDI port or uplink port.
This small piece of hardware directly connects the electrical and physical elements of a network. Data communication uses different media to transmit data, each of which implements MDI in a different way.
MDI is an uplink port designed for connecting different network devices. It is used in network interface card (NIC) ports. Because all inputs to NIC become outputs on hubs and switches, these devices have their input/output or transmitting/receiving reserved in a configuration that is known as MDI-X.
MDI ports are very common in satellite communication. For the purpose of TV and radio broadcasting, a local station must broadcast a signal supply from the land position to an orbiting satellite. This process is called satellite uplink. Many cellular companies and broadband service providers also pass on their systems’ upstream communication paths as uplink broadcasting. These types of uplinks can be cell phone SMS, voice messages or any other type of data sent through a source network.
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Margaret is an award-winning technical writer and teacher known for her ability to explain complex technical subjects to a non-technical business audience. Over the past twenty years, her IT definitions have been published by Que in an encyclopedia of technology terms and cited in articles by the New York Times, Time Magazine, USA Today, ZDNet, PC Magazine, and Discovery Magazine. She joined Techopedia in 2011. Margaret's idea of a fun day is helping IT and business professionals learn to speak each other’s highly specialized languages.
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