CM??????????
1?CATV?????????
CATV???????????????????????????????????????CATV?????????????HFC?????550MHz????????????????????????
???????????????????Cable Modem?????????Cable??????????????????????????????Modem?????????????????CATV??????????????????????????????????????????????????????????????????10Mbps?????????????30-50Mbps???
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| CM??????? |
????????????????????ISP??????????????????????
2?CM?????
????????????????????Cable Modem?????????????????????????????
CABLE MODEM????????????????????????????????????????CABLE MODEM????????????????????????
CABLE MODEM??????????????MODEM??????/???????????????SNMP???????????????????????????????????????????????Modem???????VLAN?????????????Modem???????10BaseT?????????PC??????/??????
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| ????????USB???DLINK DCM-202? |
???????????????MODEM?????MODEM?????56Kbps????????64Kbps????????ISDN?????128Kbps???????????????????????????????????????
?CABLE MODEM??????????HFC????????????????????????????????????30/40Mbps????????????????????????10Mbps????CABLE MODEM????????MODEM??????????????????
3?CM???
CABLE MODEM??????????16-QAM?64-QAM?256-QAM??QAM???????????????????????????CABLE MODEM??????????64-QAM??????30Mbit/s?256-QAM??40Mbit/s??????CABLE MODEM??????????????????????????????????27Mbit/s?36Mbit/s?
??Cable Modem??????????30Mbps?????320Kbps-10.24Mbps?????CM??ISP????????????????????????1Mbps???????128Kbps?????????????????????????????????
????CM????????????????????????????????????????????????????????10M???????500???????????????500?????????????????????????500???27Mbps?????54Kbps?????????Modem?56Kbps?????????500??????????????500??????????????????
4????CM??
??????Cable Modem??????????????MODEM??????/???????????????SNMP????????????????
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| ??CM???? |
?????????????Cable Modem????Cable Modem????Modem?????????????????????????????????????
???????????????????????????Cable Modem?????????????????????USB?????????Cable Modem????????????????????????????????
??Cable Modem???PCI?????????????????????????????????????????????
??????????Cable Modem?????????????????????????????????????????????DVB???????????????????????????????????E-Mail?? |
