The DVB-C Annex-A is the widely used cable standard. Transmission uses QAM modulation.
The DVB-C Annex-C is optimized for 6MHz, and is used in Japan. It supports a subset of the Annex A modulation types, and a roll-off of 0.13, instead of 0.15
The following parameters are valid for DVB-C Annex A/C:
In addition, the DTV QoS statistics are also valid.
The DVB-C Annex-B is only used on a few Countries like the United States.
The following parameters are valid for DVB-C Annex B:
In addition, the DTV QoS statistics are also valid.