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	TWISTED PAIR ADSL Technology ADSL (Asymmetrical Digital Subscriber Line) provides access by twisted pair and asymmetrical form (8Mbit/s downstream and 800kbit/s upstream), being thus considered the best solution for internet access in broad band for medium and long distances (until 4000m). SHDSL Technology SHDSL (Single pair High Speed Digital bit Subscriber Line) provides access by twisted pair and symmetrical form (2Mbit/s downstream and 2Mbit/s upstream), being thus considered the best solution for access where needs online interactivity, as for example video conference. Its typical reach is of 4000m in 2Mbit/s. VDSL Technology VDSL (Very high speed Digital Subscriber Line) provides access by twisted pair and symmetrical and asymmetrical form (up to 50 Mbit/s), being thus considered the best solution for internet access in broad band services of online interactivity that they need highest band for short distances (300m - 1000m).
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