6.4 Circuit switching (phones) versus packet switching (internet)
The Future of Ideas (pp. 29–34) explains how Paul Baran developed the concept of packet switching. Note that Donald Watts Davies developed the concept independently in the UK.
Read pages 29–34 of The Future of Ideas, linked below, and note down what advantages packet switching holds over the conventional circuit-switching approach of the phone networks.
Click 'view document' to open the extract from The Future of Ideas.
6.3.2. Packet switching
6.4.1 Sending a message over a network as a series of packets