In this chapter...
Switched Services—Local and Long Distance Calling
Virtual Private Networks—Connectivity for Remote Access, Intranets and Extranets
“The Last Mile” or Access Networks
Network Intelligence and Signaling
Convergence—Technical Advances Leading to Improvements in IP Networks
Examples of Converged Networks
Document Sharing and Click to Talk
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. ...