Introduction to Telecommunications Networks

Part of Delmar Learning's new National Center for Telecommunications Technologies series, this book begins with the history of the public switched telephone network (PSTN). Descriptions of public and private telecommunications networks, plus a basic electronics refresher, are provided. Subsequent chapters offer a complete overview of existing network infrastructure, with discussion of analog and digital signals concepts, frequency spectra, plus modulating and multiplexing techniques. System hardware is also introduced, including transmission and reception technology, switching systems and more.

Delmar Learning新的國家電信技術中心系列的一部分，本書從公共交換電話網（PSTN）的歷史開始。提供了公共和私人電信網絡的描述，以及基本電子學的複習。隨後的章節提供了現有網絡基礎設施的完整概述，包括模擬和數字信號概念、頻譜、調製和多路復用技術的討論。還介紹了系統硬件，包括傳輸和接收技術、交換系統等。