Vectored DSL: benefits and challenges for service providers

Service providers are facing a two-dimensional challenge in deploying broadband access networks: the evolution of service demand and competition. The demand for content-rich services including high-definition multicast and unicast video is increasing. Also, telephone companies are facing fierce competition from cable companies, especially in the North American market. In areas where fiber to the home is not cost effective, vectored DSL is a cost-effective solution for achieving downstream data rates of 100 Mb/s over 500 m by leveraging the existing copper infrastructure. This article outlines the key market driving forces behind the need for high-speed DSL and specifically vectored DSL. This article also describes many vectoring features and capabilities, and highlights the key considerations for service providers in terms of vectored DSL planning, operation, and management.