GY GY/T 200.2—2004 HFC 2 Specification for HFC data transmission system Part 2: RF interface and protocol ITU-T J.112 TransmissionSystems forInteractive 行业标准信息服务平台 Cable Television ServicesMOD 2004-03-22 2004-05-01 行业标准信息服务平台 GY/T 200.2—2004 三 4.2 MAC 4.3 13 4.4 14 4.5 14 4.6 15 PMD 15 16 5.2 29 32 6.1 MPEG 32 6.2 HFC 33 MPEG 6.3 MPEG 33 6.4 MAC 6.5 34 6.6 MPEG 34 34 7.1 34 7.2 MAC 36 7.3 MAC 49 78 8.1 78 8.2 82 8.3 82 8.4 84 98 86 9 86 9.1 86 9.2 97 9.3 100 9.4 106 10 CM- CMTS 111 10.1 CMTS 111 10.2 CM 111 10.3 129 10.4 132 10.5 173 11 CM 174 ＡＢＣＤＥＦＧＨＩKＬ 176 178 181 CM 212 MAC 217 224 225 HFC 230 233 DOCSIS 240 IGMP 245 247 GY/T 200.2—2004 GY/T 200 HFC 1 2 GY/T 200 2 ITU-T J.112 Transmission Systems forInteractive Cable Television Services B Data-over-cableradiofrequencyinterface ITU-T J.112 B QoS A B c F D H 1 E G J K L 行业标准信息服务平台 11