混合光纤同轴电缆（HFC）网络是有线电视（CATV）网络的一个子类，其中用户通过在主干网中使用光传输技术进行分组。有线电视基础设施可以支持适用于DVB广播系统的交互式服务的返回通道的实现。有线电视可用于在DVB环境中实现交互式服务，从而在用户终端和服务提供商之间提供双向通信路径。

Hybrid Fibre Coax (HFC) networks are a sub-class of Cable Television (CATV) networks in which the subscribers are divided into groups by using optical transmission technology in the trunk network. The CATV infrastructures can support the implementation of the Return Channel for interactive services suitable for DVB broadcasting systems. CATV can be used to implement interactive services in the DVB environment, providing a bi-directional communication path between the user terminal and the service provider.