1、 GY/T 200.12004 HFC 1 Specification for HFC data transmission system Part 1: General specification 2004-03-22 2004-05-01 GYGY/T 200.12004 I . II III 1 1 2 1 3 1 4 HFC . 1 5 HFC . 2 6 2 7 2 8 3 GY/T 200.12004 II GY/T 200 HFC 1 2 GY/T 200 1 GY/T 200.12004 III HFC HFC HFC GY/T 200.12004 1 HFC 1 1 HFC H
2、FC 2 GY/T 106-1999 GY/T 180-2001 HFC YD/T 1076-2000 CM IEEE 802.3 Information technology Telecommunications and information exchange between systems Local and metropolitan area networks Part 3: Carrier sense multiple access with collision detection(CSMA/CD) access method and physical sublayer specif
3、ications RFC 0791 3 CM Cable Modem CMTS Cable Modem Termination System DHCP Dynamic Host Configuration Protocol NSI Network Side Interface RFI Radio Frequency Interface SNMP Simple Network Management Protocol TFTP Trivial File-Transfer Protocol ToD Time of Date UNI User Network Interface 4 HFC 4.1 H
4、FC HFC / GY/T 106-1999 GY/T 180-2001 4.2 HFC HFC HFC CMTS CM 1 CMTS CM GY/T 200.12004 2 CMTS CM NSI UNI 1 HFC RFI RFI HFC5 HFC 5.1 5.1.1 NSI IEEE 802.3u 100BASE-T 10BASE-T IEEE 802.3z 5.1.2 CMTS CM HFC RFI CMTS CM F HFC 5.1.3 UNI CM UNI IEEE 802.3 10BASE-T IEEE 802.3u 100BASE-T USB PCI CM CM UNI / TCP/IP RFC 0791 5.2 HFC GY/T 106-1999 5.3 RMS 64QAM -10dB -6dB 256 QAM -6dB -4dB 6 HFC CM CM CMTS - CM CM CM DHCP ToD TFTP CM CM SNMP CMTS CMTS SNMP 7 CMTS CM HFC CMTS CM CMTS CM HFC HFC 1 HFC GY/T 200.12004 3 8 HFC
