Telecommunications Networking ITelecommunications NetworkingTelecommunications NetworkingOverview of Telecommunications Networking IOverview of Telecommunications Networking IICopyright 1998, S.D. Personick. All rights reserved 1Telecommunications Networking ILecture 1Overview of Telecommunications Networking I-IICopyright 1998, S.D. Personick. All rights reserved 2Telecommunications Networking •Sending and receiving messages (smoke signals, flashes of light, telegraph, teletype, facsimile, voice mail, text E-mail, multimedia E-mail)•Real-time conversations and collaborative work (telephone, 2-way radio, amateur radio, video teleconferencing, multimedia teleconferencing)•Accessing stored information (FTP, WWW)•Networked information systems (telnet, client-server, distributed computing environments)Copyright 1998, S.D. Personick. All rights reserved 3Telecommunications Networking•How to communicate in efficient, predictable, reliable, and useful ways?-Representing information as a “signal”-Defining fidelity of reception-Signals in the presence of noise, distortion and interference-Point-to-point communication systems-Switched networksCopyright 1998, S.D. Personick. All rights reserved 4Overview of Telecommunications Networking I•Overview of telecommunications Networking I-II •Information (voice, audio, images, video), and signals that represent information •Signals in noise, measures of quality of communication•Wire-pair and coaxial cable, optical fiber, and wireless transmission systems (link layer)•Circuit switching and circuit-switched telecommunications networksCopyright 1998, S.D. Personick. All rights reserved 5Overview of Telecommunications Networking II•Wireless systems and networks: peer-to-peer communication using a shared “ether”, broadcast systems, cellular/ PCS, 2-way satellite systems •Local area networks (packet switching) •Internet •Next generation systems, networks, issues and
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