INFS 370 Telecommunications - PowerPoint PPT Presentation

Loading...

PPT – INFS 370 Telecommunications PowerPoint presentation | free to download - id: 1ad1aa-ZTQzZ



Loading


The Adobe Flash plugin is needed to view this content

Get the plugin now

View by Category
About This Presentation
Title:

INFS 370 Telecommunications

Description:

Rosen invents geosynchronous satellite. Milestones in telecommunications. 1963. Rosen invents geosynchronous satellite. 1965. Lucky makes auto equalization techniques ... – PowerPoint PPT presentation

Number of Views:135
Avg rating:3.0/5.0
Slides: 77
Provided by: morgans5
Learn more at: http://www.uccs.edu
Category:

less

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

Title: INFS 370 Telecommunications


1
INFS 370 Telecommunications
  • Professor Morgan M. Shepherd

2
Agenda
  • Roll
  • Syllabus
  • What you should expect

3
Roll
4
www.uccs.edu/is370
  • Syllabus and lecture notes are posted
  • Now for your input

5
If you had one wish...
6
Good health

Fame
Long life
Popularity
Good looks
7
Dont want to be a schmuck!
8
What do people fear most?
Exam
Two trains are heading towards each other. One
starts from NY,
9
Speaking in Public
10
This will be a GREAT course if...
11
We will learn
  • Telecommunication jargon
  • Telecommunication models
  • How to solve typical telecommunication problems
  • About telecommunication management issues
  • How networks work

12
9 to 5 in telecommunications
  • What goes into your definition of a dream job?

13
Definitions
  • Telecommunications
  • The electronic transmission of information
  • Transmission
  • The movement of signals along a communications
    link

14
Broken down into its simplest form,
telecommunications is just the movement of bits
from point A to point B.
15
We need to understand how that occurs, and how to
manage the people and equipment involved.
16
Types of networks
  • Differentiated by geographical coverage
  • LAN (Local Area Network)
  • Covers a few kilometers
  • MAN (Metropolitan Area Network)
  • Covers a few dozen kilometers
  • WAN (Wide Area Network)
  • World-wide coverage

17
How do we represent information?
18
How do we represent information?
  • The computer handles this for us.

19
What is a byte?
20
How many bits are in a byte?
6 ?
2 ?
3 ?
4 ?
5 ?
8 ?
1 ?
7 ?
16 ?
12 ?
21
How many bits are in a byte?
6 ?
2 ?
3 ?
8
4 ?
5 ?
7
1 ?
16 ?
12 ?
22
Why?
23
How many choices can you make with a quarter?
24
Two choices
  • H
  • T

25
How many choices can you make with two quarters?
26
Four
  • H H
  • H T
  • T H
  • T T

27
How many choices can you make with three quarters?
28
Eight
  • H H H
  • H H T
  • H T H
  • H T T
  • T H H
  • T H T
  • T T H
  • T T T

29
So if I had an 8 letter alphabet....
  • H H H a
  • H H T b
  • H T H c
  • H T T d
  • T H H e
  • T H T f
  • T T H g
  • T T T h

30
But computers only understand 1s and 0s
  • 0 0 0 a
  • 0 0 1 b
  • 0 1 0 c
  • 0 1 1 d
  • 1 0 0 e
  • 1 0 1 f
  • 1 1 0 g
  • 1 1 1 h

31
How many bits do we need to represent...
  • The alphabet?

a,b,c,d,e...
32
How many bits do we need to represent...
  • The alphabet?
  • Including the capital letters?

a,b,c,d,e... A,B,C,D,E...
33
How many bits do we need to represent...
  • The alphabet?
  • Including the capital letters?
  • And the digits 0-9?

a,b,c,d,e... A,B,C,D,E... 0,1,2,3,4...
34
How many bits do we need to represent...
  • The alphabet?
  • Including the capital letters?
  • And the digits 0-9?
  • And all the funny characters?

a,b,c,d,e... A,B,C,D,E... 0,1,2,3,4...
_at_,,,!,?...
35
Bits
  • Small letters 26
  • Capital letters 26
  • Digits 0-9 10
  • Funny characters 100
  • Total 162
  • So 2? gt 162?

36
2 n
  • 21 2
  • 22 4
  • 23 8
  • .
  • .
  • 27 128
  • 28 256

37
Eight bits covers us
  • By using eight bits to represent each character
    we can uniquely identify each character

38
Examples
a 01100001 b 01100010 c 01100011 A
01000001 B 01000010 C 01000011
39
The network
40
Whats in the cloud?
41
Whats in the cloud?
  • A bunch of computers
  • All operating like old time switchboard operators
  • These computers are primarily responsible for
    routing all the traffic

42
How does a phone call work?
43
Why do we care how this routing occurs?
44
Why do we care how this routing occurs?
  • The more hops our route takes, the longer it
    may take for the data to arrive

45
Some simple network commands
  • Ping
  • Used to see if the computer at the other end is
    there, or awake
  • Tracert
  • Used to see all the computers we have to go
    through before our data makes it to the
    destination
  • Returns the Internet Control Message Protocol
    (ICMP) messages

46
Network exercise
  • Go to Start
  • Then Run
  • Then type command

47
Using the ping command
  • Ping the brain machine from the lab
  • ping brain
  • ping brain.uccs.edu
  • Ping the Colorado Springs web site
  • ping www.coloradosprings.com
  • Ping the Google site
  • ping www.google.com

48
Using the trace command
  • Trace the Colorado Springs web site
  • tracert www.coloradosprings.com
  • Trace the Google site
  • tracert www.google.com
  • Which had more hops?

49
Your biggest task in this field
  • Keeping the users happy, vs. keeping management
    happy

50
Managers wants
Users wants
51
Managers wants
Users wants
52
Throughput vs. response time
53
Throughput
  • The amount of data you can push through in a
    given amount of time
  • The more data you push through (transmit), the
    greater the throughput

54
Response time
  • The amount of time you have to wait before the
    system does what you asked it to do.
  • Usually thought of as How long after I hit the
    enter key do I have to wait for a new screen?

55
A brief history
  • Started in the 1950s....

56
Milestones in telecommunications
  • 1897
  • Braun invents the CRT

57
Do we need to know this stuff !?!
58
Milestones in telecommunications
  • 1897
  • Braun invents the CRT
  • WWI
  • Teletype is invented

59
Milestones in telecommunications
  • 1897
  • Braun invents the CRT
  • WWI
  • Teletype is invented
  • WWII
  • Van Duuren invents ARQ transmission

60
Milestones in telecommunications
  • 1897
  • Braun invents the CRT
  • WWI
  • Teletype is invented
  • WWII
  • Van Duuren invents ARQ transmission
  • Early 1950s
  • MIT ties 23 networks together

61
Milestones in telecommunications
  • 1960
  • Maiman invents the laser

62
Milestones in telecommunications
  • 1960
  • Maiman invents the laser
  • Early 1960s
  • Bell Labs invents digital phone switch

63
Milestones in telecommunications
  • 1960
  • Maiman invents the laser
  • Early 1960s
  • Bell Labs invents digital phone switch
  • 1961
  • Corbato invents time sharing computer

64
Milestones in telecommunications
  • 1960
  • Maiman invents the laser
  • Early 1960s
  • Bell Labs invents digital phone switch
  • 1961
  • Corbato invents time sharing computer
  • 1962
  • Bell Labs invents the T-1

65
Milestones in telecommunications
  • 1963
  • Rosen invents geosynchronous satellite

66
Milestones in telecommunications
  • 1963
  • Rosen invents geosynchronous satellite
  • 1965
  • Lucky makes auto equalization techniques

67
Milestones in telecommunications
  • 1963
  • Rosen invents geosynchronous satellite
  • 1965
  • Lucky makes auto equalization techniques
  • 1960-1969
  • RS-232 standard evolves

68
Milestones in telecommunications
  • 1963
  • Rosen invents geosynchronous satellite
  • 1965
  • Lucky makes auto equalization techniques
  • 1960-1969
  • RS-232 standard evolves
  • 1968
  • Carterphone FCC ruling

69
Milestones in telecommunications
  • 1970
  • Aloha network developed

70
Milestones in telecommunications
  • 1970
  • Aloha network developed
  • Early 1970s
  • Corning develops fiber optic cable

71
Milestones in telecommunications
  • 1970
  • Aloha network developed
  • Early 1970s
  • Corning develops fiber optic cable
  • 1971
  • ARPANET was formed

72
Milestones in telecommunications
  • 1970
  • Aloha network developed
  • Early 1970s
  • Corning develops fiber optic cable
  • 1971
  • ARPANET was formed
  • 1974
  • DEC develops Ethernet

73
Milestones in telecommunications
  • 1983
  • OSI develops the 7 layer ISO model

74
Milestones in telecommunications
  • 1983
  • OSI develops the 7 layer ISO model
  • 1984
  • ISDN networks are developed

75
Milestones in telecommunications
  • 1983
  • OSI develops the 7 layer ISO model
  • 1984
  • ISDN networks are developed
  • ENOUGH WITH THE HISTORY ALREADY!!!!

76
Next week
  • Skim through the entire book
  • If you havent already
  • Not as if youll be tested, but just to get an
    idea about what is in store
  • Read chapter 1
  • As if you will be tested
About PowerShow.com