To date, most residential customers to the Internet have used dial-up modems with a top speed of about 56.6 kbps [kilobits per second]. In the past two years broadband access has become available via cable modems offered by the local unregulated cable provider and via digital subscriber lines...

In this article, we examine the rationales offered by telecommunications regulators worldwide for pursuing mandatory unbundling. We begin by defining mandatory unbundling, with brief descriptions of different wholesale forms and different retail products. Next, we examine four major rationales...