Because there is a non-linear relationship between money invested and the end result, and the greatest efficiency in investment may be achieved through a hetero

Because there is a non-linear relationship between money invested and the end result, and the greatest efficiency in investment may be achieved through a heterogeneous approach. For example, if there is existing coaxial cable infrastructure in an area, it may be far less expensive to deploy higher-speed DOCSIS than it is to roll out entirely new fibre for the same amount of bandwidth. DOCSIS is easily capable of gigabit speeds, the main issues are sharing QAMs with existing cable television and the ratio of customers per headend.