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IEEE Communications Magazine

Issue 12 • Date Dec. 1996

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Displaying Results 1 - 15 of 15
  • Author index

    Publication Year: 1996, Page(s):1 - 16
    Cited by:  Papers (1)
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    Freely Available from IEEE
  • H.263: video coding for low-bit-rate communication

    Publication Year: 1996, Page(s):42 - 45
    Cited by:  Papers (58)  |  Patents (22)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (984 KB)

    This article provides an overview of H.263, the new ITU-T Recommendation for low-bit-rate video communication. H.263 specifies a coded representation for compressing the moving picture component of audio-visual signals at low bit rates. The basic structure of the video source coding algorithm is taken from ITU-T Recommendation H.261 and is a hybrid of interpicture prediction to reduce temporal red... View full abstract»

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  • Low bit-rate speech coders for multimedia communication

    Publication Year: 1996, Page(s):34 - 41
    Cited by:  Papers (56)  |  Patents (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3428 KB)

    The International Telecommunications Union (ITU) has standardized three speech coders which are applicable to low-bit-rate multimedia communications. ITU Rec. G.729 8 kb/s CS-ACELP has a 15 ms algorithmic codec delay and provides network-quality speech. It was originally designed for wireless applications, but is applicable to multimedia communications as well. Annex A of Rec. G.729 is a reduced-c... View full abstract»

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  • The V.34 high speed modem standard

    Publication Year: 1996, Page(s):28 - 33
    Cited by:  Papers (28)  |  Patents (20)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2032 KB)

    The development of the V.34 modem standard permits full-duplex transmission at rates up to 33.6 kb/s in the ordinary general switched telephone network (GSTN). This article briefly describes the technologies that are used to make these dramatically increased bit rates possible. This new high-speed modem enables various new multimedia modem applications View full abstract»

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  • Multiservice access network upgrading in Europe: a techno-economic analysis

    Publication Year: 1996, Page(s):124 - 134
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (5872 KB)

    The article presents a techno-economic evaluation of strategies for developing the traditional access network along a cost effective path toward a future-proof multiservice broadband network. A broad range of appropriate network alternatives have been assessed for each of five representative European upgrade cases. The technological options that have been evaluated range from conventional copper-b... View full abstract»

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  • The H.324 multimedia communication standard

    Publication Year: 1996, Page(s):46 - 51
    Cited by:  Papers (13)  |  Patents (59)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1596 KB)

    ITU-T H.324 is the new international standard for multimedia communication on low-bit-rate circuit-switched networks, including ordinary analog telephone lines. It supplies any combination of real-time video, audio, and data. H.324 was designed, above all, to provide the best possible performance (video and audio quality, delay, etc.) on low-bit-rate networks. This article covers the H.324 system ... View full abstract»

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  • H.323: the multimedia communications standard for local area networks

    Publication Year: 1996, Page(s):52 - 56
    Cited by:  Papers (41)  |  Patents (216)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2468 KB)

    This article provides an overview of ITU-T Recommendation H.323, “Visual telephone systems and equipment for local area networks which provide a non-guaranteed quality of service.” This recommendation applies to multimedia communications over packet-switched networks, such as Ethernet, which run TCP/IP, IXP/SPX, or other related protocols. In addition to the multimedia terminal, other ... View full abstract»

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  • Simultaneous voice and data on the general switched telephone network using framed QADM

    Publication Year: 1996, Page(s):58 - 63
    Cited by:  Papers (4)  |  Patents (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2228 KB)

    Considerable effort has been expended to allow voice to be transmitted over a general switched telephone network (GSTN) connection simultaneous with modulated data. A new transmission technology for this purpose is introduced-framed quadrature audio/data modulation (framed QADM)-in which voice and data channels are combined as an integral part of the modulation process. The basic technology is des... View full abstract»

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  • The information driveway [using analog telephone lines]

    Publication Year: 1996, Page(s):64 - 68
    Cited by:  Papers (11)  |  Patents (27)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2512 KB)

    Regular analog telephone lines can be directly connected through the telephone network to ISDN terminals. By using appropriate modulation formats, they can carry digital traffic at rates approaching those of ISDN, without extra recurring costs for the customers or new investments in the network. Such a system thus provides an affordable and universal “driveway” to information services.... View full abstract»

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  • Operations standards for global ATM networks: network element view

    Publication Year: 1996, Page(s):72 - 84
    Cited by:  Papers (4)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (7380 KB)

    The International Telecommunication Union (ITU) has completed work on a series of standards on asynchronous transfer mode (ATM) equipment functional operations and network element management. The objective of these standards is to enable flexible design and interoperability of network elements for use in a global ATM network, independent of any specific implementation. This article discusses these... View full abstract»

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  • Photonic transport network OAM technologies

    Publication Year: 1996, Page(s):86 - 94
    Cited by:  Papers (27)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (7028 KB)

    The optical path concept was proposed to realize ubiquitous B-ISDN. It can make quantum leaps in both transmission capacity and cross-connect throughput simultaneously by exploiting WDM (wavelength division multiplexing) transmission and the wavelength routing capabilities of paths. Since the optical path is a new concept, new operation and management (OAM) systems and related technologies need to... View full abstract»

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  • Administration of restorable virtual path mesh networks

    Publication Year: 1996, Page(s):96 - 101
    Cited by:  Papers (19)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1432 KB)

    This article addresses key issues related to the administration of ATM backbones based on virtual paths with embedded restoration capabilities. The concept of logical subnetworking according to the required reliability of service (RoS) is presented. This is followed by an investigation into alternative protocols for activating preplanned backup VPs with shared capacity protection, whereby speed an... View full abstract»

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  • A new service provisioning method in the multimedia/B-ISDN era

    Publication Year: 1996, Page(s):102 - 107
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3560 KB)

    In the coming multimedia/B-ISDN era, customers must be able to design, define, and manage communication services based on their own concepts and knowledge of communications. This article proposes a new concept, intelligent dynamic service provisioning (IDSP), offering customers this capability. Service views of customers and carriers for multimedia services are presented. Based on these views, we ... View full abstract»

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  • Managing a broadband environment: “you can't buck the market”

    Publication Year: 1996, Page(s):108 - 112
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1632 KB)

    Demand for bandwidth seems unstoppable, and investment in network infrastructure is massive. There is a desire that network operators be able to manage these networks in an efficient manner, with flexibility to support new customer service opportunities faster and cheaper. Network operators are looking to standards to help them meet this challenge. The telecommunications management network (TMN) m... View full abstract»

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  • Sockets++: a uniform application programming interface for basic level communication services

    Publication Year: 1996, Page(s):114 - 123
    Cited by:  Papers (6)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4496 KB)

    This article presents an enhanced application programming interface based on the well-known BSD Sockets paradigm. The major modifications made during the redesign of Sockets are as follows: using an object-oriented design that facilitates the introduction of new communication service functions and simplifies use and learning; using a new generic communication model that supports a wide range of tr... View full abstract»

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Aims & Scope

IEEE Communications Magazine, considered by most to be their most important member benefit, provides timely information on all aspects of communications: monthly feature articles describe technology, systems, services, market trends, development methods, regulatory and policy issues, and significant global events.

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Meet Our Editors

Editor-in-Chief
Osman Gebizlioglu
Huawei Technologies