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DSL. DSL liigid ADSL SHDSL VDSL ADSL ITU G.992.1 Jagab vasepaari telefoniga, filtri abil 8 Mbit/s download, 1 Mbit/s upload Interleaving (error correction),

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Presentation on theme: "DSL. DSL liigid ADSL SHDSL VDSL ADSL ITU G.992.1 Jagab vasepaari telefoniga, filtri abil 8 Mbit/s download, 1 Mbit/s upload Interleaving (error correction),"— Presentation transcript:

1 DSL

2 DSL liigid ADSL SHDSL VDSL

3 ADSL ITU G Jagab vasepaari telefoniga, filtri abil 8 Mbit/s download, 1 Mbit/s upload Interleaving (error correction), DTM + QAM

4 ADSL DMT

5 ADSL variandid ADSL2 (12Mbit/s), ADSL2+ ITU G (24 Mbit/s, 2,2 Mhz) Annex M (2x upload, split 138 > 276kHz) Annex I (256k upload POTS arvelt) Annex J (I+M) G.Lite (ilma filtrita)

6 SHDSL kHz ITU G – max 2312 kbit/s G.SHDSL.bis – max 5696 kbit/s TC-PAM – Trellis Coded Pulse Amplitud Modulation Ei saa kasutada koos telefoniga Bonding 2 ja 4 paariga Võrdlus SDSL-i ja HDSL-iga

7 VDSL ITU G – VDSL – 52 Mbit/s ITU G – VDSL2 – m VDSL1 – QAM või DMT. VDSL2 – DMT Cisco LRE jt.

8 ATM ADSL ja SHDSL kasutavad ATM-i PVC-d (VPI/VCI) ATM cell 48 baiti Uuemad DSLAM-id IP-põhised

9 Rakendused Andmeside VoDSL (ADSL, SHDSL) E1 over SHDSL Privaatvõrgud


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