It is a network device, usually at a telephone company local exchange or central office, that receives signals from multiple customer Digital Subscriber Line (DSL) connections and puts the signals on a high-speed backbone line using multiplexing techniques.
Published in Chapter:
Evolution of DSL Technologies Over Copper Cabling
Ioannis Chochliouros (OTE S.A., General Directorate for Technology, Greece), Anastasia S. Spiliopoulou (OTE S.A., General Directorate for Regulatory Affairs, Greece), Stergios P. Chochliouros (Independent Consultant, Greece), and Elpida Chochliourou (General Prefectorial Hospital “G. Gennimatas”, Greece)
Copyright: © 2009
|Pages: 11
DOI: 10.4018/978-1-60566-014-1.ch068
Abstract
A variety of digital technologies can be used for effective implementation of access networks in fast growing (global) markets. The relative challenge becomes of greater importance, due to the extended penetration and the wider (technical and business) adoption of the much-promising broadband perspective (Chochliouros & Spiliopoulou, 2005). Regarding the four different (and actually “primary”) media that can be used to reach several categories of end-users (namely, copper, fiber, air, and power lines), Figure 1 demonstrates possible alternatives that can currently be used in all related cases.