Broadening the ATM offer with a full set of service categories

Livio Lambarelli; Matteo D'Ambrosio; Paolo Castelli

doi:10.1117/12.261237

13 December 1996 Broadening the ATM offer with a full set of service categories

Livio Lambarelli, Matteo D'Ambrosio, Paolo Castelli

Proceedings Volume 2953, Broadband Strategies and Technologies for Wide Area and Local Access Networks; (1996) https://doi.org/10.1117/12.261237
Event: Advanced Imaging and Network Technologies, 1996, Berlin, Germany

Abstract

The paper aims at providing a comprehensive picture of the new set of ATM-layer services defined in parallel by the ITU-T and The ATM Forum, outlining the potential benefits that can derive, both to users and network service providers, from the availability of these new functionalities in an ATM-based network. Terminological differences between the ITU-T and ATM Forum documents are compared and clarified and the approaches to the use of quality of service parameters and classes are discussed. The so-called Service Categories (using the ATM Forum nomenclature) are Constant Bit Rate, Variable Bit Rate (VBR), Available Bit Rate (ABR) and Unspecified Bit Rate. The ABR is the newest and the one raising major discussions, as specific congestion control mechanisms, which do represent a real innovation in the ATM framework, have been defined for its support. The paper therefore introduces the ABR service in some details and discusses some still open issues and utilization perspective.

Citation Download Citation

Livio Lambarelli, Matteo D'Ambrosio, and Paolo Castelli "Broadening the ATM offer with a full set of service categories", Proc. SPIE 2953, Broadband Strategies and Technologies for Wide Area and Local Access Networks, (13 December 1996); https://doi.org/10.1117/12.261237

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