What technology evolved after the adoption of switched digital video (SDV) due to the limitations found in legacy hybrid fiber coax (HFC) networks?

The evolution of Distributed Access Architecture (DAA) is a response to the limitations associated with legacy hybrid fiber coax (HFC) networks, particularly after the introduction of switched digital video (SDV).

DAA enhances the ability to deliver higher-bandwidth services in a more efficient manner. It separates the control plane from the data plane, allowing for a more scalable and flexible network architecture. This technology utilizes a combination of data processing at the headend and remote locations, enabling improved resource management and increased capacity, which are especially important in modern applications requiring enhanced bandwidth.

In contrast, optical networking primarily focuses on the transmission of data over optical fibers, which was already recognized before the complications with HFC and SDV. Fiber-to-the-premise (FTTP) refers specifically to the installation of fiber cabling directly to end-user locations, but it does not address the need for enhancements within existing HFC infrastructures. Coaxial cable upgrades involve improving the physical components of the coaxial network but do not tackle the fundamental limitations associated with the architecture of HFC systems in handling modern digital demands. Hence, DAA is recognized as a significant technological advancement that directly addresses the challenges faced in traditional HFC networks following the implementation of switched digital video.