DSL
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DSL, punim nazivom digital subscriber line, jest porodica tehnologija koja nudi digitalnu razmjenu podataka preko običnih bakrenih žica koje se mogu naći u većini običnih domova. Obično, brzina downloada (preuzimanja) ide od 128 kilobita po sekundi (kbps) pa sve do 24.000 kbps, sve u zavisnosti od tehnologije koja se koristi. Kod asimetrične (ADSL) linije, brzina downloada veća je od brzine uploada (slanja), dok su kod simetrične SDSL linije obje stavke iste. Za uspostavljanje DSL linije obavezan je neki DSL modem.
DSL tehnologije
DSL tehnologije (nazvane xDSL) uključuju:
- High-bit-rate Digital Subscriber Line (HDSL)
- Symmetric Digital Subscriber Line (SDSL), standardizovanu HDSL verziju
- Asymmetric Digital Subscriber Line (ADSL), verzija DSLa sa sporijom brzinom slanja (upload)
- Rate-Adaptive Digital Subscriber Line (RADSL)
- Very-high-bit-rate Digital Subscriber Line (VDSL)
- Very-high-bit-rate Digital Subscriber Line 2 (VDSL2), poboljšana verzija VDSL-a
- G. Symmetric High-speed Digital Subscriber Line (G.SHDSL), standardizovana zamjena za rane SDSL linije
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