Networking and Telecommunications

1
Networking and Telecommunications

• 1. Introduction

2
Introduction-Basic Terms and Acroynms

• Telecommunications
• Data Communications
• Network
• LAN
• WAN
• MAN

3
Can You Think of Examples of Lans, Wans,
Networks???
4
(No Transcript)
5
History of Networking/Telecom.

• Tele distance
• 3000 BC Sumarian Clay Tables
• Ancient Greeks/Fire Signals
• Roman messengers/scrolls
• Paul Revere light/horse/mouth
• Pony Express (short lived)
• 1854 Samuel Morse- telegraph
• 1876 Bell telephone
• Today TV, Radio, phone, fax

6
Alexander Bell-Inventor of Telephone
7
History-Networking and Telecommunications

• Mainframe/minicomputers-Punch cards/terminals
  (1940-1970)
• Microcomputers (1980) standalone
• Network-LAN / WAN (1990)
• Combo of data, voice and video

8
(No Transcript)
9
(No Transcript)
10
(No Transcript)
11
(No Transcript)
12
Is this a history class?

• 1980 Xerox, DEC and Intel developed 1.0
  Ethernet, 10Mbps, bus topology, baseband lan
• 1983 Novell Formed
• 1984 IBM and Microsoft, early client/server
  file sharing lan

13
(No Transcript)
14
Why Lans?

• Sharing Resources (hardware and software)
• Distributed processing
• Centralized administration (backups, software
  installs/upgrades)
• Centralized data and software/applications

15
Why Lans? (cont.)

• Low Cost
• Minimal Perf. Degredation with each additional
  user although there is some degredation and a
  single point of failure
• Communications
• Downsizing/rightsizing

16
Why Wans?

• Connects lans, micros, minis, mainframes

17
(No Transcript)
18

• Lan vs. Wan Speeds

19
Lan Hardware

• Cables
• Peripherals
• Etc

• Server
• Client
• NIC

• (cables-twisted pair, coax, fiber, etc)

20
HUB/Switch
NIC
UTP-Cat 5E (RJ 45)
21
Lan Software

• Network Operating System (NOS)
• Novell Netware, Banyan Vines, etcor bundled with
  O.S. like windows or unix)
• Application Software
• Server Software

22
Some Terms

• Client/workstation/pc/mac/ unix system, desktop
• Server-file, communications, print, web, email,
  etc
• Ethernet-intel, dec, xerox (1980)
• Token ring-ibm
• Virtual drive

23
(No Transcript)
24
More Terms

• ATT deregulation and divestiture
• rboc-regional bell operating companies
• Carrier
• Protocols-tcp/ ip, ipx/spx, appletalk, etc..
• Standards-ISO, ANSI, IEEE

25

• Port-software and hardware (serial or parallel
  port)
• rs232-ieee, 25 pin serial cable
• Punch down blocks
• Conduit
• Wiring closet
• Riser cables
• Hub/Switch
• mau (multistation access unit)
• Rj11/ rj45 (phone/ data jacks)

26
Punch Down Blocks
Wiring Closet
27

• Digital vs. analog transmissions
• Multiplexer
• Terminal server/access server
• Polling
• Bandwidth
• Baseband/broadband
• OSI 7 layer model
• TCP/IP

28
(No Transcript)
29
Terminal/Access Server
30
Voice Networks

• Telephone Networks
• CO (Central Office)
• Switching network (old days humans, then
  mechanical switches, then electronic switching)
• Public Switched Telephone Network
• Other Types of Networks
• Private vs. Public Networks
• Wireless Networks (radio waves)

31
(No Transcript)
32
(No Transcript)
33
(No Transcript)