... Telstar • 19 62, Fax was introduced • 19 63, Touch tone telephones • 19 69, Picture phone service • 19 69, Internet began as a network of US military and academic computers • 19 76, packet-switched ... of these. lecture 1. doc Page 1 (6) CSN200 Introduction to Telecommunications, Winter 2000 Lecture_ 01 Why Study Data Communications and Communications Network? To fulfill the occupational ... lecture 1. doc Page 2 (6) CSN200 Introduction to Telecommunications, Winter 2000 Lecture_ 01 360 BC : Water telegraphs store detailed information transmitted by smoke signals 15 0 BC : Net...