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Introduction to Telecommunications Network Engineering
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Telecommunications has been defined as a technology concerned with communicating from a distance, and we can categorize it in various ways. Figure 1.1 shows one possible view of the different sections of telecommuni- cations. It includes mechanical communication and electrical communica- tion because telecommunications has evolved from a mechanical to an electrical form using increasingly more sophisticated electrical systems. This is why many authorities such as the national post, telegraph, and telephone (PTT) companies are involved in telecommunications using both forms. Our main concern here is electrical and bidirectional communication, as shown in the upper part of Figure 1.1. The share of mechanical telecommu- nications such as conventional mail and press is expected to decrease, whereas electrical, especially bidirectional, communication will increase and take the major share of telecommunications in the future. Hence, major press corpo- rations are interested in electrical telecommunications as a business opportunity.
Tarmo Anttalainen - Personal Name
1-58053-500-3
NONE
Management
English
2003
1-399
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