Broadband Local Loops for High-Speed Internet Access (Artech by Maurice Gagnaire PDF

By Maurice Gagnaire

ISBN-10: 1580530893

ISBN-13: 9781580530897

ISBN-10: 1580536727

ISBN-13: 9781580536721

A research of broadband entry applied sciences for engineers operating for telecommunications vendors and web carrier prone. It deals pros an in-depth realizing of unbundling for voice and knowledge companies, and gives information on issues and demanding conversation protocols. there's assurance of a number of the choices for the buyer premises, together with domestic networking, unmarried apparatus client premises, and multi-equipment consumer premises. Supported by means of approximately 250 illustrations and over a hundred and twenty equations, the handbook covers quite a lot of key issues to aid execs with their paintings within the field."

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Extra info for Broadband Local Loops for High-Speed Internet Access (Artech House Telecommunications Library)

Example text

These descriptors are then analyzed by a call-admission control (CAC) procedure within the ATM network. ATM offers six different classes of service called ATM transfer capabilities (ATCs). In public networks, there are very few switched virtual circuit (SVC) capabilities, with most of the ATM connections being based on PVCs. Each ATC is defined by a combination of traffic and QoS parameters [4]. The ATCs have been specified with a different taxonomy by the ITU-T and the ATM Forum. These differences are described as follows.

7 discusses the impact of dial-up modems on the PSTN. 2 Dial-Up Modems Since 1980, PSTN users have begun to use their subscriber lines to access data network, and more particularly the Internet. For that purpose, a voiceband modem must be installed at the CPE. The term voiceband refers to the fact that the on-line signal must be included in the [0, 4 kHz] band. The reason for this constraint is simple: With analog modems, the subscriber line is dedicated exclusively either to the telephone set or the modem.

Most of these disciplines were developed initially for the ATM environment. Weighted fair queuing (WFQ) and class-based weighted fair queuing (CB-WFQ) are among the most popular service disciplines that have been adapted to the IP context [3]. Different queuing strategies are also used to distinguish the priorities of the different flows. RED11 and weighted RED (WRED) are two more popular buffer management strategies inspired by the ATM environment [6]. Different criteria enable one to determine the relative merits of these techniques.

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Broadband Local Loops for High-Speed Internet Access (Artech House Telecommunications Library) by Maurice Gagnaire

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