Telecom
Upcoming SlideShare
Loading in...5
×
 

Telecom

on

  • 305 views

hi

hi

Statistics

Views

Total Views
305
Views on SlideShare
305
Embed Views
0

Actions

Likes
0
Downloads
2
Comments
0

0 Embeds 0

No embeds

Accessibility

Categories

Upload Details

Uploaded via as Microsoft PowerPoint

Usage Rights

© All Rights Reserved

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Processing…
Post Comment
Edit your comment
  • File: telecom.ppt 1998-01-29 Did this for OPIM 660, Spring 1998.
  • This is perhaps useful, but sok really didn’t draw upon it for making these slides: @book(fitzgerald-jerry-1993, author="Jerry Fitzgerald", Editor="", title="Business Data Communications", publisher="John Wiley \\&\\ Sons, Inc.", year="1993", volume="", series="", address="New York, New York", edition="fourth", month="", note="", comment="")
  • xx
  • xx
  • xx
  • Have a discussion (if there’s time) on the data networks issue. Note connection with Dertouzos and “common communications conventions” Basically, the point is that the voice networks have their interconnection problems solved, but the data networks do not. Why? The regulatory structure, but also: (1) there are A LOT of datacom networks and standards and vendors... and (2) the services that are needed and offered for datacom are many and varied and still emerging. Voice then is comparatively simple.
  • “ Anything, anytime, anywhere...” just like sex in the 1960s (ha ha? Use: @Article(lewis-nyt-082794, author="Peter H. Lewis", title="Here's to the Techies Who Lunch", journal="The New York Times", year="1994", volume="", number="", pages="35, 43", note="(August 27, 1994)", comment="") It’s about a caffé in Dallas, Infomart, featuring modem-ready tables with power strips for your laptops. Perhaps use the article in the course pack and/or scan the picture and headline and get it into these slides. Also, wireless....
  • xx
  • Get a little discussion going. Some of the big points are (1) Voice and telex don’t have computers at the other end (2) A human initiating a data call can use a computer to get information and to do things, without another person being there then (3) A computer could initiate the data call. Thus, work can get done computer-to-computer, making for economies of labor. This course is in large part about how this is all coming about and what it means.
  • “ Anything, anytime, anywhere...” just like sex in the 1960s (ha ha? Use: @Article(lewis-nyt-082794, author="Peter H. Lewis", title="Here's to the Techies Who Lunch", journal="The New York Times", year="1994", volume="", number="", pages="35, 43", note="(August 27, 1994)", comment="") It’s about a caffé in Dallas, Infomart, featuring modem-ready tables with power strips for your laptops. Perhaps use the article in the course pack and/or scan the picture and headline and get it into these slides. Also, wireless....

Telecom Telecom Document Transcript

  • Basic Telecommunications
    • Vocabulary, concepts, more “bullet proofing”
    • Touch on just a few basic points
      • essentials of technology and where it’s going
      • essentials of regulation and where it’s going
    • Raise for discussion certain management issues
  • Basic Telecom Terms and Concepts, 1
    • Transmission facilities
      • Twisted pair
      • Coaxial cable
      • Microwave
      • Satellite
      • Fiber optics
      • Wireless
    • Signaling
      • Analog--continuous
      • Digital--discrete
  • Basic Telecom Terms and Concepts, 2
    • Analog signaling
      • AM, FM, etc.
      • Limitations
        • Error correction
        • Encryption
    • Digital signaling
      • Computer friendly
      • Facilitates
        • Error correction
        • Encryption
      • Fits with fiber optic transmission facilities
      • “The way the world is going”
    • Modems
      • “Modulator--demodulator”
      • A to D and D to A
      • Because the voice network is analog
        • At the handset
    View slide
  • Basic Telecom Terms and Concepts, 3
    • Switching
      • The cloud
      • The cloud is expensive
      • Switching makes better use of the cloud
    • Kinds of switching
      • Circuit switching
      • Message switching
      • Packet switching
        • And the Internet
        • And ATM
      • Broadcasting
      • Cellular
    View slide
  • Basic Telecom Terms and Concepts, 4
    • Voice networks
      • RBOCs
      • Other local telcos
      • Long distance carriers
      • Cable companies?
    • Data networks
      • LAN
      • WAN
      • etc.
      • Often (usually) use voice network transmission facilities
    • Cable TV networks
      • Microsoft and $1 billion/yr R&D on the set top box
  • Where Do Networks Come From?
    • Long distance carriers
      • AT&T, MCI, Sprint, etc.
    • “ Common carriers”
    • VANs
      • And the Internet
    • The Internet and ISPs
    • Private networks
  • Telecom Standards and Regulation
    • Voice network regulation (U.S.A.)
      • 1934-1981
      • 1982-present
        • RBOCs etc.--local loop provider regulated, but less so under the Telcom Act of 1996
        • Long distance: largely unregulated
    • Data communications?
      • Basically, anything goes
      • But whose transmission facilities are used?
        • Largely: from the voice networks
    • Voice networks
      • Interconnected world-wide
        • Standards
        • Legal requirements
    • Data networks? Cable?
    • Recent (de)regulatory actions
  • The Internet
    • The world’s first network for making data calls
      • NB telex
    • History and culture
      • ARPA net, nuclear attack
      • NSF net and the open community
      • Governance
    • Design policies
      • Simple protocols (e.g., TCP/IP)
      • Public and open
    • Continuing rapid growth
      • Electronic commerce
        • Consumer-oriented
        • Business-to-business
      • User base growing beyond “young male nerds”
    • Cost of use?
  • The Last Mile Problem
    • What it is
    • Possible solutions
      • Upgrades of existing plant
      • Cable
      • Fiber optics
      • Wireless
    • The competitive scene TODAY
      • Cable companies (and Microsoft)
      • DSL and the telcos (and Microsoft)
      • Other telcos
    • Why is the computer industry mucking in the last mile problem?
    • Prognostications?
  • The Protocols Problem(s)
    • Important concept: layered architectures for telecommunications
      • OSI reference model, 7 layers
      • Also important for software in general
      • Abstraction as a way of handling complexity
    • Importance of standardization
      • de jure
      • de facto
      • Internet?
    • Development of standards to date
      • Telephony
      • Data communications
        • And the Internet
    • For electronic commerce?
      • Incomplete
    • Managerial/decision issues?
  • Further Issues for Discussion
    • Outsourcing of network provision and management
      • Options
      • Management issues
    • Imagine you are about to receive a sales call…
    • Commitment to standards
      • Which ones?
      • Who to believe, trust, or bet on?
    • Assuming AAA networks (the Internet on steroids),
      • Productivity opportunities? (and what will it take to realize them)
      • Industrial-organizational consequences?
  • This slide unintentionally left blank
  • Computer Mediated Communication (CMC): 1
    • Telex
      • A world-wide telecommunications system
      • Up and running for > 100 years
      • Digital signaling
    • Telephone
      • A world-wide telecommunications system
      • Up and running for > 50 years
    • Isn’t this enough?
      • What’s missing?
  • CMC: 2
    • Telephones are everywhere.
      • From an arbitrary telephone you can call nearly any other telephone.
    • Computers are .... all over.
      • From an arbitrary computer, why can’t you make a data call to nearly any other computer?
    • Data communications is inherently easier (in many ways) than voice communication.
      • So why can’t you make those data calls?
  • CMC: 3
    • Increasingly, you can make those data calls
      • And there’s a lot of great stuff out there now
    • Call on special networks
      • NSF Net
      • Compuserve
      • Prodigy
      • etc.
    • And THE INTERNET...
      • An internet: a network of networks
      • The Internet: The Mother of All Internets
    • The world we are coming to
      • “ Anything, anytime, anywhere...”