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IEEE Communications Magazine

Issue 4 • April 1989

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Displaying Results 1 - 5 of 5
  • Error performance in evolving digital networks including ISDNs

    Publication Year: 1989, Page(s):12 - 18
    Cited by:  Papers (19)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (879 KB)

    Some recent developments on error performance design methodology and the status of international standardization activities on network performance objectives are discussed. The effects of errors in various services and common error performance parameters are outlined, and a fundamental strategy for ISDN (integrated-services digital network) performance design methodology is presented. Error perfor... View full abstract»

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  • DS-1 extended superframe format and related performance issues

    Publication Year: 1989, Page(s):19 - 23
    Cited by:  Papers (1)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (527 KB)

    The impact of the North American DS-1 extended superframe format (ESF) on both service and application performance monitoring is discussed. The difference between D4 framing and the ESF format is explained, and a description is given of how customers use ESF statistics. Results of ESF monitoring by the authors are presented, and ESF facility measurements are correlated with data application perfor... View full abstract»

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  • Performance aspects of reference clock distribution for evolving digital networks

    Publication Year: 1989, Page(s):24 - 34
    Cited by:  Papers (3)  |  Patents (23)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1063 KB)

    Recent reference clock distribution technologies are reviewed. Performance concepts and specification methodologies for synchronization system designs are then summarized. The focus is on the common master-slave synchronization designs, generally consisting of three subsystems: the primary clock supply, the slave clock supply, and the clock distribution system overlaid on the digital network. Netw... View full abstract»

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  • Grade of service in the ISDN era

    Publication Year: 1989, Page(s):46 - 50
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (562 KB)

    The grade of service (GOS) concept is explained, and effect of ISDN (integrated-service digital network) services on GOS parameters is explored. Consideration is given to quality degradation that could be caused by traffic congestion, other than effects on the existing parameters such as call setup delay and call blocking probability, and to the changes that would be induced on the existing parame... View full abstract»

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  • AT&T's new approach to the synchronization of telecommunication networks

    Publication Year: 1989, Page(s):35 - 45
    Cited by:  Papers (18)  |  Patents (17)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1451 KB)

    A description is given of AT&T's nationwide synchronization network along with a tutorial on the importance of and need of synchronization. The primary reference clock (PRC) is described along with its verification methodology, capabilities, and performance. The clock and transmission models are discussed along with methods of specifying and testing clock performance. Planning tools and methodolog... View full abstract»

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Huawei Technologies