Expert opinion: coming soon - adding, modifying services quickly

Article Abstract:

Two new technologies, the Switch Computer Application Interface (SCAI) and the Intelligent Network (IN), will enable telephone service subscribers to to use their computers to rapidly modify, develop and add new telecommunications services. It is costly and time-consuming for telephone companies to develop, modify and test the software that provides the enhanced telephone services that reside on the companies' central-office switches. The major challenge to shifting responsibility for new services to telephone service providers and end-users is to provide an open network architecture while ensuring network security and reliability. The SCAI interface will enable subscriber-owned computers to provide sophisticated call transfer and delivery functions and create caller-specific records for call recipients. US and European SCAI standards are being developed. IN provides an infrastructure for new services that will function on both the Signaling System 7 signaling network as well as subscriber computers, and it provide general access to services and features throughout the network. IN standards and regulatory issues are discussed.

Computer integrated systems design, Product introduction, Systems development, Telephone systems, End users, System Development, Telephone System, Strategic Planning, End User, Communications Management, Requirements Analysis, Telecommunications Service, New Technique

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Metropolitan-area networks

Article Abstract:

Metropolitan-area networks (MANs) are a new networking scheme that supply more bandwidth than local area networks (LAN). MANs provide a regional conduit for voice, video, and data services that the LANs are too small to handle and the wide area networks (WANs) are too large for in terms of capacity and cost. MANs fill the gap for users within a 50-kilometer diameter. The topology, data rates, and access protocols are still evolving for this new type of network. The double-star configuration is usually preferred by designers of residential fiber MANs. Most business MANs have a multiple-ring configuration. The IEEE, the American National Standards Institute (ANSI), and the International Telegraph and Telephone Consultative Committee (CCITT) are working on standard protocols.

Communications protocols, Protocol, Metropolitan area networks, Trends, Configuration, Optical Communication

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Optical fibers reach into homes

Article Abstract:

Optical-fiber cabling to individual homes is now being installed by some telephone companies to determine the appropriate technology and price for fiber-to-home connections. Fiber makes possible interactive broadband services such as conventional video, high-definition television and still-frame displays for information retrieval or catalog shopping. By the early 1990s, the first systems conforming to the new B-ISDN (broadband integrated services digital network) standards are expected to appear. Most US residents will have access to the broadband world by 2010.

Internet services, Cable television, Fiber optics, Telecommunications, Videophones, Broadband, Communications Technology, Cable Television/Data Services, Video Telephones

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