56K Modem ? Cable modem and ADSL - PowerPoint PPT Presentation

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56K Modem ? Cable modem and ADSL

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Title: PowerPoint Last modified by: andy Created Date: 1/1/1601 12:00:00 AM Document presentation format: Other titles: Times New Roman ... – PowerPoint PPT presentation

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Tags: 56k | adsl | cable | docsis | modem

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Title: 56K Modem ? Cable modem and ADSL


1
?????????
2
56K Modem ? Cable modem and ADSL
56k Modem Cable modem ADSL
???????(bps) Upload33.6K Download56K ?? Upload1024K Download10240K ?? Upload256K Download6144K Upload64K640K Download512K6M (HiNet?SEEDNet)
?? ?? ?? ??
?? ?? ?? ??
3
56K Modem ? Cable modem and ADSL
56k Modem Cable modem ADSL
???????(bps) ???????? ????10K?? ?? Upload600K Download1856K ?? Upload600K Download1600K Upload56K Download400K (HiNet?SEEDNet)
IP ISP?? ?? ??
?? ??,???? ???? ???
4
56K Modem ? Cable modem and ADSL
56k Modem Cable modem ADSL
?? ??? ??? ???(?????? ?????)
?? ??? ??? ????????
??? 96.8 1.2 0.7
??? ?? ?????? ???????????????????? ??????????????????
5
56K Modem ? Cable modem and ADSL
56k Modem Cable modem ADSL
?? ?????????????? ?????????????? ?????????????????????????????????????????
?? ???????????,modem????????? ??????????????????????????????? ???????????????????????????????????????4??????????
6
56K Modem ? Cable modem and ADSL
56k Modem Cable modem ADSL
??? PC???????? PC??????????????? PC???????????
??? ?????? ????????????? ?????????????
?? ???? ???? ????
??????? HiNet?SEEDNet? ???????????? HiNet?????
7
Worldwide Forecast of Total Cable Modems
K Units
FromGartnerGroup Dataquest
8
Worldwide Forecast of Total xDSL CPE
K Units
FromGartnerGroup Dataquest
9
????
  • ?????(Cable Modem)
  • ????(CMTS)
  • ?????????(ADSL)
  • ????(DSLAM)

10
????
  • Correlant ?CM???Broadcom????,???????????
  • ??????DOCSIS Cable Modem ?2000???????3040

11
??????
  • ??Cable Modem???????????????????????????
  • ?????,??????????? ?????????????????????
  • ?????Cisco ? Nortel ? Motorola ? 3COM ? COM21 ?
    Terayon ? GI ? Toshiba

12
?????????????
  • ????(Integration) ? ??????
  • ??????,????? ? ????
  • ????,???? ? ???????,????

13
????
  • ????????????????????????????????????,?????????????
    ?
  • ?????Correlant???San Diego?????????????,???OEM????
    ???????
  • ???????????????????????????????,???????????,??????
    ??,??????????

14
?????????
  • Cable Modem?????????????,???????????Cable???,??Cab
    le Modem???,???????Cable???????
  • ??Cable Modem???????????????,???PC?Set-Top-Box????
    ??,?????????,?????????,????????????,?????????

15
????SMT AI
16
????M/IT/UTESTPACK
17
Cable modem????
18
??????????
19
????????
  • ????-??????
  • ????-????
  • ????-????

20
????
  • ???????
  • ??????
  • 25.010247 MHz
  • ??????
  • -15ppm25ppm
  • ??
  • 2500987225010872
  • Hz

21
???????
22
?????Ca?
??????µ? X?????,Ca????,??????????????
23
Ca??????
24
???????
  • A?-??????????????????????.
  • B?-????????A?
  • C?-???????????????????????????
  • D?-???????,?????????????
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