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NEW APPLICA-TION OF COPPER WIRE PAIRS: xDSL TECHNOLOGY
Aleksandar Đorđević Sa�a Đorđević Nata�a �ivić
In the last few years we have witnessed fast expansion of communication technologies, among which are mobile communications and Internet. By means of the Moore�s law the number of transistors placed on silicone chip expands exponentially, enabling more complicated applications to be used. On the other hand, the Internet growth (with its own Moore�s law), and wish for more speed places a rather big problem of ISP access in front of the engineers. ISDN with its speed of 160 kbps soon become too slow for �bandwidth-hungry applications� such as IP-telephony and real-time video. With fiber optics still too far, the only solution is xDSL.
Ključne reči: xDSL technologies, access networks, copper wire pairs. |