all the accompanying coefficients to these variables are different from zero as certified by the ftest results overall the models explanatory power rsquared is strong significant at the level estimation based on robust standard errors it further provides an understanding on how these changes will affect national ict policy and regulatory frameworks and identifies measures policy makers and regulators can take to be prepared to respond efficiently to the new challenges raised by the digital economy chapter three looks at ways to accommodate broadband spectrum expansion through new modes of sharing and innovations in licensing