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Networking and Telecommunications
1. Introduction 11/11/2018
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Introduction-Basic Terms and Acroynms
Telecommunications Data Communications Network LAN WAN MAN 11/11/2018
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Can You Think of Examples of Lans, Wans, Networks???
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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 11/11/2018
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Alexander Bell-Inventor of Telephone
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History-Networking and Telecommunications
Mainframe/minicomputers-Punch cards/terminals ( ) Microcomputers (1980) standalone Network-LAN / WAN (1990) Combo of data, voice and video 11/11/2018
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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 11/11/2018
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Why Lans? Sharing Resources (hardware and software)
Distributed processing Centralized administration (backups, software installs/upgrades) Centralized data and software/applications 11/11/2018
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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 11/11/2018
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Why Wans? Connects lans, micros, minis, mainframes 11/11/2018
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Lan vs. Wan Speeds 11/11/2018
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Lan Hardware Server Client NIC Cables Peripherals Etc…
(cables-twisted pair, coax, fiber, etc…) 11/11/2018
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HUB/Switch NIC UTP-Cat 5E (RJ 45) 11/11/2018
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Lan Software Network Operating System (NOS)
Novell Netware, Banyan Vines, etc…or bundled with O.S. like windows or unix) Application Software Server Software 11/11/2018
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Client/workstation/pc/mac/ unix system, desktop
Some Terms Client/workstation/pc/mac/ unix system, desktop Server-file, communications, print, web, , etc… Ethernet-intel, dec, xerox (1980) Token ring-ibm Virtual drive 11/11/2018
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AT&T deregulation and divestiture
More Terms… AT&T deregulation and divestiture rboc-regional bell operating companies Carrier Protocols-tcp/ ip, ipx/spx, appletalk, etc.. Standards-ISO, ANSI, IEEE 11/11/2018
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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) 11/11/2018
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Punch Down Blocks Wiring Closet 11/11/2018
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Digital vs. analog transmissions Multiplexer
Terminal server/access server Polling Bandwidth Baseband/broadband OSI 7 layer model TCP/IP 11/11/2018
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Terminal/Access Server
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Voice Networks Telephone Networks Other Types of 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) 11/11/2018
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