by Ikanos CommunicationsBusiness and residential subscribers are constantly demanding more bandwidth. With the Internet, where a wealth of content resides on the World Wide Web, most of this demand has historically been in the downstream direction. And that will certainly continue. But what has changed is that users are now accumulating and generating copious amounts of content of their own. Users, carriers and equipment vendors alike have a long history of underestimating the need for speed. The root cause is innocent enough: keeping costs under...