For many homeusers, VOIP viability, will depend on both reliability (I suspect many will argue broadband is less reliable than standard telephone), cost in use savings allowing for cost of setup. For me, as I make few landline calls from home, and very few are of long duration, or distance (£3.00 per month phone use bill is quite high), It would take a long while to recoup the costs, given ntl bundle a fixed phone for "free" with the TV service.
There will also be an apathy factor. Many could save money by switching energy suppliers, etc, but they don't so why will everyone drop standard phone like a hot potato? There will also be issues of customers understanding how it works.
Having said that any telecoms supplier that is not preparing for the advent of VOIP will be foolish. Its coming soon
