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Oi Fixo (landline service, formerly Telefone Telemar) Oi Móvel (mobile service, cornerstone of the Oi brand) Oi Velox (ADSL, 3G formerly Velox) Oi Internet (ISP) 31 (long-distance and international calling) Oi Wi-Fi (Wi-Fi access, at home or via hotspots) Oi TV (DTH pay TV) Oi Voip (Voice over IP) In 2010, Portugal Telecom acquired 22.4% of Oi ...
MPEG-4 Part 14, or MP4, is a digital multimedia container format most commonly used to store video and audio, but it can also be used to store other data such as subtitles and still images. Like most modern container formats, it allows streaming over the Internet. The only filename extension for MPEG-4 Part 14 files as defined by the ...
A video file format is a type of file format for storing digital video data on a computer system. Video is almost always stored using lossy compression to reduce the file size. A video file normally consists of a container (e.g. in the Matroska format) containing visual (video without audio) data in a video coding format (e.g. VP9 ) alongside ...
[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 electromagnetic interference is required. [4] This type of communication can transmit voice, video, and telemetry through local area networks or across long ...
This is an accepted version of this page This is the latest accepted revision, reviewed on 19 January 2025. Cable assembly containing one or more optical fibers that are used to carry light A TOSLINK optical fiber cable with a clear jacket. These cables are used mainly for digital audio connections between devices. A fiber-optic cable, also known as an optical-fiber cable, is an assembly ...
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For small dopant concentrations, R c is proportional to x(dn/dx) 2, where x is the mole fraction of the dopant in SiO 2-based glass and n is the refractive index of the glass. When GeO 2 dopant is used to increase the refractive index of the fiber core, it increases the concentration fluctuation component of Rayleigh scattering, and attenuation ...