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Broadband Telecommunications Technologies and Management by Riaz Esmailzadeh

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1Introduction

Historical Note

An early example of a telecommunications system is the Royal Mail of the Persian Empire circa 500 BC. The Empire ruled over the region between the Indus River (present day India/Pakistan) and Thrace in the present day European Turkey. It also extended as far as Libya in North Africa. The Empire was divided into different ‘Satraps’ or provinces, which were ruled by governors appointed by the central government. To rule effectively, fast and reliable messaging between Susa the capital and provincial centres was necessary. However, the distances were prohibitively long, and the means ...

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