Short for Dense Wavelength Division Multiplexing, an optical technology used to increase bandwidth over existing fiber optic backbones.
DWDM works by combining and transmitting multiple signals simultaneously at different wavelengths on the same fiber. In effect, one fiber is transformed into multiple virtual fibers. So, if you were to multiplex eight OC-48 signals into one fiber, you would increase the carrying capacity of that fiber from 2.5 Gb/s to 20 Gb/s. Currently, because of DWDM, single fibers have been able to transmit data at speeds up to 400Gb/s.
A key advantage to DWDM is that it’s protocol- and bit-rate-independent. DWDM-based networks can transmit data in IP, ATM, SONET /SDH, and Ethernet, and handle bit rates between 100 Mb/s and 2.5 Gb/s. Therefore, DWDM-based networks can carry different types of traffic at different speeds over an optical channel.
From a QoSstandpoint, DWDM-based networks create a lower cost way to quickly respond to customers’ bandwidth demands and protocol changes.
Abbreviation of Data Exchange File, a two-dimensional graphics file format supported by virtually all PC -based CAD products. It was created by AutoDesk for the AutoCAD system.
Short for Direct Drive Image Light Amplifier, D-ILA is a high performance liquid crystal display device developed by JVC to meet various requirements for projectors. The device supports high resolution, high brightness and large display size, all of which are necessary for high quality pictures ranging from presentation by PC to digital HDTV home theater.
In chat abbreviations D/L is short for download. Chat abbreviations are commonly used in Internet and online communications mediums such as e-mail, IRC, instant messaging, or through SMS.
D-Link is the corporate name of a designer and manufacturer of networking, broadband, digital, voice and data communications solutions. The company offers consumer devices in addition to providing network connectivity solutions to small and medium-sized business. The company’s products and services include networking solutions for wireless bridging, network storage, cable and DSL modems, PoE adapters, […]
Short for Delta-channel, the channel in an ISDN connection that carries control and signaling information. Basic Rate ISDN (BRI) service consists of two 64 Kbps B-channels, and one D-channel for transmitting control information. Primary ISDN service consists of 23 B-channels (in the U.S.) or 30 B-channels (in Europe). Compare with B-channel.