Table of Contents
2.3 The Physical Layer : Transmission Media
Baseband and Broadband: Definitions
The Baseband vs Broadband tradeoff
Magnetic media
Twisted pair
Twisted pair, contíd
Baseband Coaxial Cable "Coax"
Broadband Coax
Optical Fibre
Optical Fibre contíd
Line of Sight: infra-red, lasers, microwave, radio
Communication satellites
Communication Satellites contíd
Point to Point Guided Media
Characteristics of Unguided Media
The Electromagnetic Spectrum
Standards for the physical layer
Some Jargon
Jargon Contíd
RS-232c
RS 232 Basics
RS-232c
RS232c - Functional specs (9 typically used pins)
RS232c - Functional specs (9 typically used pins)
RS-232c for DTE/DTE connection
RS-449 using RS-422A or RS-423A
RS-449 using RS-422A or RS-423A
X.21
Part 2 The Physical Layer
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Author: Brian Unger
Email: unger@c3.ca
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