Historical Perspectives of Development of Antique Analog Telephone Systems

Abstract

Long distance voice communication has been always of great interest to human beings. His untiring efforts and intuition from many years together was responsible for making it to happen to a such advanced stage today. This paper describes the development time line of antique telephone systems, which starts from the year 1854 and begins with the very early effort of Antonio Meucci and Alexander Graham Bell and ends up to the telephone systems just before digitization of entire telecommunication systems. The progress of development of entire antique telephone systems is highlighted in this paper. The coverage is limited to only analog voice communication in a narrow band related to human voice.

Keywords

• antique telephones
• common battery systems
• crossbar switches
• PSTN
• voice band communication
• voice communication