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Emerging Technologies. 1 March 2006. Agenda. Assignments Recap More on digital divide in the US Lecture Discussion Leaders Lab. Assignments. Paper due Friday Presentation order (M/W) online Max five minutes! Send me files early and I will upload to main computer. Recap.

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Presentation Transcript
agenda
Agenda
  • Assignments
  • Recap
    • More on digital divide in the US
  • Lecture
  • Discussion Leaders
  • Lab
assignments
Assignments
  • Paper due Friday
  • Presentation order (M/W) online
    • Max five minutes!
    • Send me files early and I will upload to main computer
recap
Recap
  • Access is only part of the Digital Divide story
    • Although most of the DD story is outside our borders, it’s not just outside
  • Look at these data from Pew:
    • Broadband @ Home:
      • Rural: 24% adults
      • Suburban/Urban: 39% adults
emerging technologies1
Emerging Technologies
  • Nature of bits puts pressure on many sectors of society
    • Sometimes the pressure is referred to as “convergence”
  • The latest sector is telephony
slide6
POTS
  • Mature technology
  • Dedicated voice network
  • End-to-end guaranteed bandwidth
    • Exception: disasters
  • Reasonably good security
  • Meets 9-1-1 regulatory requirements
what is voip
What is VoIP?
  • VoIP (Voice over Internet Protocol) is a way to first digitize voice and then encapsulate it into packets before transmitting over a (non-voice) packet-switched IP network.
  • It is sometimes called “internet telephony”
differences 1 2
Differences (1/2)
  • Packet-switching versus circuit-switching
    • “Internet” technology allows several calls to use the same bit of bandwidth, because the bandwidth is not dedicated
  • This is possible because our voice is “digitized” and then that file is broken into small packets (bundles of bits)
differences 2 2
Differences (2/2)
  • Power requirements
    • POTS corded phone works when the power goes out. (Cordless does not! Neither does VoIP.)
  • Telephone line is multi-use infrastructure
    • Some people use it for broadband (DSL)
    • Security systems, DVRs (Tivo, RePlay) “phone home” on it
  • 9-1-1
locked to computer
Locked to Computer?
  • No! Businesses already using
  • No! Homeowners already using
  • Computer-to-phone: Skype and (soon?) Microsoft/MCI
  • “Portable” VoIP phones use wi-fi networks
    • Who provides “hot-spots”? Mostly telephone companies (AT&T, Verizon, Cingular etc.)
pc world feb 2006
PC World, Feb 2006:
  • * My People is an Internet phone service provider with a cute name and features like wake-up calls and voice dialing . * EQO is a mobile-phone app with a hard-to-pronounce name (actually, it\'s easy once you know, but it\'s "echo"--not "E Q O") that lets you place and receive Skype calls. * Chili is a wireless gadget from a company with a weird name (ZinkKat) which is designed to let teenagers make VOIP calls, listen to music stored on a PC, and hear text-to-speech versions of RSS feeds--but the demo made it a bit difficult to figure out what exactly was going on.
voip the new phone
VoIP: The New Phone
  • Subscribers end of 2005: 4.5 – 5.1 million
  • Subscribers end of 2006: 7.9 million
  • US Households by 2010: 115 million
exercise
Exercise:
  • See if service is available at your current address and determine the cost of service at Vonage and Speakeasy.net
    • Keep your current number (why?)
    • Make sure equipment costs are included
questions
Questions:
  • Despite of all the cool features and great rates of VoIP, what are the factors that may prevent people from NOT going to VoIP in the household?
  • Do you think the impacts of VoIP on society are positive or negative? And why?
  • How will VoIP change the landscape in how we communicate throughout the world?
    • What about those caught in the digital divide – will they be left behind?
summary 1 4
Summary (1/4)
  • Digital technologies are transforming society at many different levels
  • Characteristics of new media are disruptive
    • “Zeros and Ones”
    • Modularity
    • Transcoding (tech layer & cultural layer)
  • Impacts on time/space
summary 2 4
Summary (2/4)
  • Nevertheless, “new” media are more evolutionary than revolutionary
  • The growth in new media communication has led to info overload
    • How do we determine credibility?
    • Who/what used to do this for us?
summary 3 4
Summary (3/4)
  • Network effects
    • Can affect adoption of new (exclusive) technology
    • Value of network increases exponentially with the size of the network
    • New forms of organization
  • Impacts on media, politics
    • “Emergent democracy”?
summary 4 4
Summary (4/4)
  • But Many/Most are being left behind
    • What is our responsibility to them?
  • We live in a privileged place in time
slide20
Lab
  • Help with projects, website, PPTs
    • Help your neighbor?
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