What evolved due to the introduction of switched digital video (SDV) that highlighted limitations of legacy HFC networks?

The introduction of switched digital video (SDV) highlighted several limitations of legacy Hybrid Fiber-Coaxial (HFC) networks, leading to the evolution of distributed access architecture (DAA). This architecture addresses bandwidth constraints and enhances the flexibility and scalability of network infrastructure.

DAA enables operators to distribute the processing and management of video and data services closer to the end users. It takes advantage of advanced technologies like Remote PHY and Remote MAC-PHY, which help alleviate issues such as congestion and limited capacity in the traditional HFC setup. By moving certain functionalities out of the headend and closer to the curb, DAA can significantly improve the efficiency of bandwidth usage, allowing more customers to access high-definition video and data services simultaneously without straining the network.

This shift to DAA is crucial for supporting the increasing demands of modern video consumption and high-speed internet, making it a fitting response to the challenges presented by implementations like SDV.