Recursos de colección

DSpace at MIT (104.280 recursos)

This site is a university repository providing access to the publication output of the institution. Registered users can set up email alerts to notify them of newly added relevant content. A certain level of encryption and security is embedded in the site which may cause some users accessibility problems.

Program on Internet and Telecoms Convergence

Mostrando recursos 1 - 20 de 67

  1. The Legacy of the Precautionary Principle In US Law: The Rise of Cost Benefit Analysis and Risk Assessment as Undermining Factors in Health, Safety and Environmental Protection

    Ashford, Nicholas A.

  2. Supporting Real-Time Applications in an Integrated Services Packet Network: Architecture and Mechanism

    Shenker, Scott; Clark, David D.; Zhang, Lixia
    This paper considers the support of real-time applications in an Integrated Services Packet Network (ISPN). We first review the characteristics of real-time applications. We observe that, contrary to the popular view that real-time applications necessarily require a fixed delay bound, some real-time applications are more flexible and can adapt to current network conditions. We then propose an ISPN architecture that supports two distinct kinds of real-time service: guaranteed service, which is the traditional form of real-time service discussed in most of the literature and involves pre-computed worst-case delay bounds, and predicted service, which uses the measured performance of the network in...

  3. Integrated Service in the Internet Architecture: An Overview

    Clark, Dave; Braden, Bob; Shenker, Scott
    This memo discusses an extension to the Internet architecture and protocols to provide "integrated service", i.e., to support real-time as well as best-effort IP service. This memo outlines a proposed technical framework and recommends steps towards engineering and deployment of Internet integrated service. This extension is necessary to meet the growing need for realtime service for multimedia applications.

  4. Telecommunications @ Crossroads: The Transition from a Voice-centric to Data-centric Communication Network

    Mutooni, Philip K.
    Presentation version of MIT M.S. EECS/TP P Thesis, May 1997

  5. Comparative Deregulation of Far Eastern Telecommunications Markets: Economic Incentives and International Competitive Strategies

    Davidson, Jacob; McGarty, Terrence P.
    The deregulation of telecommunications has taken a major step with the WTO agreements in February of this year. Namely, each of the major Far Eastern countries has agreed to open their market in some form of planned entry. These markets will allow for the introduction of competition of local and international services now currently restricted to the local PTT as well as allowing the entry of new services in what are generally closed markets. This paper analyzes the implications of changes in several key Far Eastern countries and discusses how this will impact the U.S. economy and the overall policy implications that this will focus on.

  6. Vertical Integration and Internet Industry Structure: An Application of the Pricing Taxonomy

    Lehr, William
    This paper utilizes the Internet Pricing Interface Taxonomy to examine incentives of service providers at various stages in the service provider value chain to vertically integrate. The focus is on residential, dial-up subscribers to simplify the analysis. The goal of the paper is to address the following sorts of questions: -- What are the incentives of firms at various stages in the value chain to vertically integrate? -- What does this imply for Internet industry structure today and in the future? -- Is the market for a commodity IP bearer service sustainable? The paper is organized into the following sections. Section I provides a review of the Internet Pricing...

  7. Sustaining a Vertically Disintegrated Network through a Bearer Service Market

    Kavassalis, Petros; Lee, Thomas Y.; Bailey, Joseph P.
    Based upon the Internet perspective, this chapter will attempt to clarify and revise several ideas about the separation between infrastructure facilities and service offerings in digital communications networks. The key notions that we will focus on in this paper are: i) the bearer service as a technology-independent interface which exports blind network functionality to applications development; ii) the sustainability of an independent market for bearer service and the organizational consequences associated with such a market.

  8. Complementary Products and Modular Innovation in Internet Telephony

    Gawer, Annabelle
    Presentation at ITC semiannual meeting, Hewlett-Packard Laboratories, Bristol, UK, June 12-13, 1997

  9. Taxonomy Table of Existing and Forthcoming Internet Telephony and Multimedia Standards

    Englund, Christer

  10. Taxonomy of Internet Telephony and Multimedia Standards

    Englund, Christer

  11. Future Directions of Personal Multimedia Communication Space: Investigation of Wireless Markets, Systems, and Standards in Regard to Multimedia over IP

    Englund, Christer
    Mobile communications and Internet based computer communications are the two fastest growing areas of communications indicating an enormous business potential in the intersection of these two domains. Since the introduction of cellular networks, wireless communications have focused on speech only, while mobile data has played a minor role. This paradigm is likely to change drastically in the near future. A new phenomenon, reflected by a nomadic lifestyle, is spreading all over the industrialized countries. Clear evidence of this is discernible particularly in Japan and Scandinavia. Nomadic lifestyle suggests that we are now at the advent of a new era of mobile communications, which will be fueled by...

  12. A Taxonomy of Internet Telephony Applications

    Clark, David
    There are a broad range of objectives and opportunities that can be lumped under the heading of Internet Telephony, or ITel. This paper identifies a number of criteria that can be used to separate these different ITel applications into classes, including the degree of interoperation with the existing telephone system, and the extent to which the existing Internet must be augmented to support them. Using this framework, the paper concludes that different ITel applications have very different motivations, and have very different implications for industry structure, economics and regulation. The immediate opportunities for ITel involve cost reductions relative to current telephone pricing. The long term trajectory for...

  13. Public Policies to Encourage High-Speed Residential Internet Access

    Gillett, Sharon
    This paper analyzes inter-firm alliances for providing the home computer user with an innovative new telecommunications service: a high-speed connection to the Internet. After providing an overview of the Internet access provider industry, it discusses the split of competencies needed to deliver this new service, between monopolistic infrastructure (cable and local telephone) companies and entrepreneurial Internet service providers. It finds that the asymmetry in market power between the two partners holds up the diffusion of this innovation, and can best be remedied by more open access to both the subscriber and provider sides of the cable network, along with increased competition in all forms of local communications infrastructure. policy implications of the analysis. While policy issues related to...

  14. Internet Economics: What Happens When Constituencies Collide?

    Bailey, Joseph P.; McKnight, Lee
    This paper describes the emerging field of Internet Economics and some of the constituencies which are shaping it. It defines the motivating factors for looking at this area, reviews some recent research results, and explores areas of overlapping interest. The paper concludes with six recommendations for further work. different academic disciplines which have done work related to Internet economics: technology, economics, and policy. Each of these areas has important contributions to make to the field but there has been little consensus across disciplines (or even within disciplines) on which direction to take. Figure 1 shows a Venn diagram which tries to characterize the constituencies' current motivation to look at Internet economics.

  15. Opening the Set-Top Market

    Bailey, Joseph P.
    As the cable television networks transition from a broadcast-only network, to a high-bandwidth two-way network, the importance and functionality of the set-top box increases. However, developments in the set-top box industry have been restrained by the control the cable companies have over their equipment. Currently, a set-top box includes closed, proprietary technology which prohibits its use on other cable systems' networks. This paper explores the possibility of abandoning closed, proprietary set-top box standards in favor of open standards. This "opening" of the set-top box is not a trivial matter since it challenges cable companies' concerns about security, quality, etc. The paper includes a policy analysis of the impact...

  16. Internet Economics

    Bailey, Joseph P.
    The Internet, a growing network of networks, is an often touted and often misunderstood technology. It has its own infrastructure complete with service providers, private networks, user communities, international links, etc. similar to telephone or telegraph industries. However, the Internet is more decentralized and less application-specific than traditional telecommunication industries. These differences extend beyond the technology of the Internet to the economics and policies. This paper explores Internet economics, a growing field which encompasses the technology, economics, and policy surrounding the Internet. It identifies different communities who have overlapping interests in this field and how their preconceived notions of how the Internet operates create contradictory views on how this...

  17. Anything You Can Do I Can Do Better

    Solomon, Richard
    We are about to witness one of those revolutionary shifts in technology that pass through similar stages of pathologic stress often chronicled for human behavior: first an imperceptible perturbation deemed a singularity or interesting curiosity; then the change grows into a faddish amusement or distraction; soon the amusement starts generating enough money or activity to become either, or both. a real business or a threat to other established enterprises or even to the social order; and finally the technological change takes hold, completely revamps its corner of the universe, economy, or society, and now enters the realm of permanent ?problem? or ?opportunity,? depending on your...

  18. A Taxonomy of Communications Demand

    O'Donnell, Shawn; Neuman, W. Russell; Lanning, Steven
    Demand forecasts are an essential tool for planning capacity and formulating policy. Traffic estimates are becoming increasingly unreliable, however, as accelerating rates of use and new communications applications invalidate conventional forecasting assumptions. This paper presents an alternative approach to the study of telecommunications demand: build aggregate estimates for demand based on the elasticity of demand for bandwidth. We argue that price elasticity models are necessary to grasp the interaction between Moore-type technological progress and non-linear demand functions. Traditional marketing models are premised on existing or, at best, foreseeable services. But in a period of sustained price declines, applications-based forecasts will be unreliable. Dramatically lower prices can cause fundamental changes in the mix of applications...

  19. Open Layered Networks: the Growing Importance of Market Coordination

    Kavassalis, Petros; Lee, Tom; Bailey, Joseph P.
    Based upon the Internet perspective, this paper will attempt to clarify and revise several ideas about the separation between infrastructure facilities and service offerings in digital communications networks. The key notions that we will focus on in this paper are: i) the bearer service as a technology-independent interface which exports blind network functionality to applications development; ii) the organizational consequences associated with the emergence of a sustainable market of bearer service: a clear movement at the level of industrial structure from traditional hierarchies to more market coordination.

  20. The History of Communications and Its Implications for the Internet

    Odlyzko, Andrew
    The Internet is the latest in a long succession of communication technologies. The goal of this work is to draw lessons from the evolution of all these services. Little attention is paid to technology as such, since that has changed radically many times. Instead, the stress is on the steady growth in volume of communication, the evolution in the type of traffic sent, the qualitative change this growth produces in how people treat communication, and the evolution of pricing. The focus is on the user, and in particular on how quality and price differentiation have been used by service providers to influence consumer behavior, and how...

Aviso de cookies: Usamos cookies propias y de terceros para mejorar nuestros servicios, para análisis estadístico y para mostrarle publicidad. Si continua navegando consideramos que acepta su uso en los términos establecidos en la Política de cookies.