Basic Telecommunications - PowerPoint PPT Presentation

Loading...

PPT – Basic Telecommunications PowerPoint presentation | free to download - id: 24dac2-ZDc1Z



Loading


The Adobe Flash plugin is needed to view this content

Get the plugin now

View by Category
About This Presentation
Title:

Basic Telecommunications

Description:

Telecom.ppt. Basic Telecommunications. Vocabulary, concepts, more 'bullet proofing' ... Basic Telecom Terms and Concepts, 1. Transmission facilities. Twisted ... – PowerPoint PPT presentation

Number of Views:4474
Avg rating:3.0/5.0

less

Write a Comment
User Comments (0)
Transcript and Presenter's Notes

Title: Basic Telecommunications


1
Basic Telecommunications
  • Vocabulary, concepts, more bullet proofing
  • Touch on just a few basic points
  • essentials of technology and where its going
  • essentials of regulation and where its going
  • Raise for discussion certain management issues

2
Basic Telecom Terms and Concepts, 1
  • Transmission facilities
  • Twisted pair
  • Coaxial cable
  • Microwave
  • Satellite
  • Fiber optics
  • Wireless
  • Signaling
  • Analog--continuous
  • Digital--discrete

3
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

4
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

5
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 RD on the set top box

6
Where Do Networks Come From?
  • Long distance carriers
  • ATT, MCI, Sprint, etc.
  • Common carriers
  • VANs
  • And the Internet
  • The Internet and ISPs
  • Private networks

7
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

8
The Internet
  • The worlds 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?

9
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?

10
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?

11
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?

12
This slide unintentionally left blank
13
Computer Mediated Communication (CMC) 1
  • Telex
  • A world-wide telecommunications system
  • Up and running for gt 100 years
  • Digital signaling
  • Telephone
  • A world-wide telecommunications system
  • Up and running for gt 50 years
  • Isnt this enough?
  • Whats missing?

14
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 cant you make a
    data call to nearly any other computer?
  • Data communications is inherently easier (in many
    ways) than voice communication.
  • So why cant you make those data calls?

15
CMC 3
  • Increasingly, you can make those data calls
  • And theres 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...
About PowerShow.com