September 2001
Beginner
528 pages
14h 14m
English
Content preview from Essential Guide to Telecommunications, The, Third Edition
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Chapter 5. The Public Network
In this chapter...
Switched Services—Local and Long Distance Calling
Dedicated Services
Virtual Private Networks—Connectivity for Remote Access, Intranets and Extranets
“The Last Mile” or Access Networks
Optical Networking
Network Intelligence and Signaling
Convergence—Technical Advances Leading to Improvements in IP Networks
Examples of Converged Networks
Document Sharing and Click to Talk
Summary
The public switched telephone network (PSTN) is made up of switches, cabling and equipment that simultaneously transmits multiple telephone calls over single pairs of fiber cabling. The extraordinary characteristic of public networks is that carriers from all parts of the world have agreed on ways to transmit calls to each other. ...
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