Directing traffic in the radio spectrum's crowded neighborhood

Article Abstract:

With the proliferation of wireless devices, equitable apportionment and management of the radio spectrum has become more important. Military, commercial, private citizens, public safety, appliances: equipment in all these groups competes for space on the airwaves. Lower frequencies were the first to be commercialized, and are therefore the most widely used. They offer the best reception over the greatest distance with the least power expended in amplification. Advances in technology have made more of the high frequency wavelengths available, in the microwave part of the spectrum. But these presently require more repeating equipment to keep the signal going over longer distances or in areas of complex topography, like cities.

Radiotelephone communications, Cellular and Other Wireless Telecommunications, Mobile Radio Services, Statistical Data Included, Telecommunications services industry, Telecommunications industry, Radio broadcasting, Frequency allocation (Telecommunications), Telecommunications equipment industry, Wireless communications services, Radio frequency allocation

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Versatile video CD's get a foothold in U.S.; video CD's can't rival DVD's for movie quality, but they offer a wide selection and lower cost

Article Abstract:

Video CDs are gaining popularity in the world outside the US. Although the disks do not have the picture quality or the data-capacity of DVDs, they are about half the price and there is a more varied selection. Many of the video CDs made in Asian countries are pirated versions of US motion pictures. The Motioin Picture Association of America is watching the Asian market carefully and estimates that the association's members lose $3 billion annually from various forms of piracy.

Marketing procedures, Motion Picture and Video Industries, Motion Picture Production & Services, Video Discs, Forecasts and trends, Industry trend, International aspects, Video recording industry, Videodisks, Videodisc industry

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Using the Internet to cut phone calls down to size

Article Abstract:

Internet Protocol telephony's popularity has grown as Internet use has grown. It is a less-expensive way to make phone calls worldwide. The technology is now approaching and international standard which will see the elimination of dropped calls and user-equipment incompatibility.

Telephone and telegraph apparatus, Telephone Apparatus Manufacturing, Services information, Data Communications Equip, Computer network equipment industry, Network hardware industry, Innovations, Computer-telephone integration, Computer telephony, Technology development, Data communications equipment, Internet/Web technology

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