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Untitled Document
Fiber Optic vs VDSL ????????????????????????????????????????????????
โดย Support วันที่ 10/03/2549 11:48
 

?????????????????????????????????????????? LAN ?????????????????????? UTP ???? ?????????????????????????????????????? 100 ????????????  ???????????????????????????????????????? ???? ?????? Repeater ??????? 100 ????, ?????? 56K ???????????????, ?????????????????????????????? (Fiber Optic)  ???????????????????????????? (Wireless LAN) ???????  ????????????????????????????????????????????????????????? LAN ????????????????  ????????? Fiber Optic ??????????????????????? ?????????????????????????????????????????????????? Fiber Optic  ??????????????????????? ?????????????????????????????????????????????????  ????????????????????????????????? Fiber Optic ??? Ethernet over VDSL ?????????????????????????????????????????????????????????????????



??????????????????????? Fiber Optic

????????????????????? Fiber Optic ?????????????????????????????? Media Converter ???????????????????????????????????????????????? (Copper Cabling System) ?????????????????????????????? (Fiber Cabling System)  ????????????????????? 10/100Base-TX ?????? 100Base-FX ?????????????????????????? 2 ??. ????????? Multimode  ??? 15 ??. ????????? Singlemode ??? Fiber Optic ?????????????????????????????????????????? ?????????????????????????????????


??????????????????????? Ethernet over VDSL

Ethernet over VDSL ????????????????????????????????????????????????????????????????????????????? LAN ?????????????? ??????????????????????????????????????? VDSL (Very High-Bit Rate Digital Subscriber Line) ????????????????????????? DSL  ??? VDSL ????????? Ethernet over VDSL ?????????-????????? (Upstream/Downstream) ???????????????????? (Symmetric) ??? 10Mbps  ??????????????????????????????? 1.2 ??. ????????????????????????????????????? 0.4 ??.  ??????????????????????????????????????????????????? 0.9 ??. ????????????????????????? 1.5 ??.

??????? ?????????????????? Ethernet over VDSL ??????????????????????????????? Media Converter ?????????? Fiber Optic  ??? Ethernet over VDSL ??????????????????????????????? UTP ????????????????????????? (???????????)  ?????????????????????? 10/100Base-Tx ?????? 10Base-S ?????????????????????????????????????????????? Ethernet over VDSL  ????????????????????????????? Ethernet over VDSL ????????????????????????????????? Ethernet over VDSL (Master) ??????? Ethernet over VDSL (Slave) ??????????????????????  ?????????????????????????????????????? ?????????????????????????????????????????????


??????????????????????????? Fiber Optic ??? Ethernet over VDSL

Technology

????????

???????

??????????

 Fiber Optic (Multimode)

???????? ??????????????????

2 KM

??? ??????????????????????????

 Fiber Optic (Singlemode)

???????? ??????????????????

15 KM

??? ??????????????????????????

 Ethener over VDSL

10 Mbps

1.2 KM

???? ??????????????

???????????????????? Fiber Optic ????????????????????????? Ethernet over VDSL ??????? ????  ???????????????????????????? Fiber Optic ???????????????????? ??????????????????????? Media Converter ?????? Fiber Optic ?????????????????????????  ???????????????????????????????????????????????????????????  ??????????? Fiber Optic ???????????????????????????????????????????????????????????? ???? ?????????????????????????????????-??????? ?????????????????????????? Bandwidth ????????? ???? ??????????????????? ?????????????????????? ???????????????? ????????????????????????????????????????????????????????????  ????????????????????? Fiber Optic ????????????????????????? ????????????????????????


??????????????????????????????

Technology

??????????

?????????????????

??????+??????

 Fiber Optic

55,000 ???

10,000 ???

180 ???/????

 Ethener over VDSL

35,000 ???

????? ???????????????

8 ???/???? (????? ?????????????)

?????????????????????????????? Fiber Optic ????????? Media Converter (2 ???) ?????????????????????? ??????????????????????? VDSL ????????? VDSL Modem (2 ???) ???????????  ?????????????????????????????????????????????????????????????? ????????????????? Fiber Optic ??????????????????????????????????????????????????????????? ??????????????????? VDSL ????????????????????????????????????????????????????????????????????????  ????????????????????????????????????????????????????????????????????????????????????????????????????????  ??????????????????????????????????? Fiber Optic ??????????????????????????? ??????? Fiber Optic ?????????????????????????????? 15 ???? ????????? Fiber Optic ??????????????????????????????????????????? ????????????????????????????????????????????????????????????????????  ???? VDSL ???? ??????????????????????????????? ?????????????????????????? ????? VDSL ???????????????????????????????????????


???????????????????????????????????????? VDSL ???????????????????????????

??????????????????????? ????????????????????????????????????????????????????????????????????????????????  ???????????????????????????????????????????????? ?????????????????????????????????????? ??????????????????????????????????  ??????????????????????????????????????????????????

 
 
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