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The Unpredictable Certainty White Papers (1997) / Chapter Skim
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Plans for Ubiquitous Broadband Access to the National Information Infrastructure in the Ameritech Region
Pages 185-189

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From page 185...
... is rapidly becoming widely available, providing dialup capability at 56, 64, and 128 kilobits per second. Various local carriers, including the local exchange carriers, are offering frame relay service at 56 kilobits per second and I.5 megabits per second, and switched mult~megabit digital service at I.5 and 45 megabits per second, with plans for migration to asynchronous transfer mode (ATM)
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From page 186...
... The allocation of these 110 charnels to various applications is flexible and wait be adjusted to satisfy user needs. Based on current estimates, approximately 70 of the channels will carry analog video signals for applications similar to current cable television, including basic and premium channels and pay-per-view.
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From page 187...
... These upstream channels must utilize a time division multiple access protocol, which does not allow for 100 percent "fill"; nevertheless, traffic studies indicate that a single I.5-megabit-per-second upstream channel could easily support all of Me digital video requirements, including video on demand, of the 125 customer locations, leaving the remaining 14 or more for the more interactive multimedia and data applications. There are two parameters of Me interactive services that determine the required upstream capacity: (1)
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From page 188...
... In actuality, as additional lines are constructed in each of the six major metropolitan areas, building on the initial base, economies of scale are expected to make the economics even more favorable. TABLE 1 Economic Data for Initial Phase of Amentech's Deployment of Broadband Access Transport Infrastructure Year Customer locations RevenuesCosts Discounted cumulative passed (millions)
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From page 189...
... Ameritech has commit to providing broadband access in its region, utilizing a hybrid optical fiber and coaxial cable architecture, supporting a wide range of applications. These include video services similar to current cable television, expanded digital multicast services, and interactive multimedia services, as well as high speed data services.
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Key Terms

  • coaxial cable
  • downstream capacity
  • broadband access
  • optical fiber
  • access transport

  • million lines
  • interactive multimedia
  • cable television
  • information infrastructure
  • national information

  • current cable
  • multicast services
  • multimedia services
  • interactive services
  • market penetration

  • percent market
  • video serving
  • information repositories
  • cable bus
  • including video

  • single user
  • simultaneous sessions
  • services similar
  • upstream channels
  • serving offices

  • internodal network
  • multiple users
  • initial phase
  • ubiquitous broadband
  • percent simultaneous


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