Will VOIP become successful despite the problems listed below?
Of course VOIP will become successful. Most people aren't concerned about voice quality, 911 availability, and backup power requirements when choosing a phone or calling plan. People will be happy with mediocre connections as long as they can communicate. J.R. Snyder (internal link) points out early telephone users put up with worse: calls going out when it rained, party lines (internal link) where only one person out of perhaps 12 could make a call at a time, and noise so bad that you could barely hear. But do we have to go backwards? Isn't technology advancing? It is. To more efficiently make and process calls that sound bad, that can't be located, and die when the power dies. :-) Telecom doesn't always move forward in the direction we want. I'll give a negative example from the past and then mention a positive development for the future.
Cellular callers often sound like Donald Duck in a tin can because carriers went digital to increase their network capacity. They'd run out of spectrum and needed to carry more calls using the same frequencies. Digital by itself does not decrease bandwidth, actually it increases it (internal link), but you gain channel capacity when you tightly compress and multiplex those calls. Now you have three calls on every frequency and, well, quack, quack, quack. Since digital signals don't go as far as analog and aren't as robust, coverage suffered as well. More dropped calls, more clipped conversations. But high capacity cellular systems could not exist today unless they were digital. The old analog networks couldn't meet demand and there isn't any way they could have paid for themselves with those comparatively few callers. There's the rub. We advance, we go backwards. Speaking of advance, have you heard of Skype?
Skype.com (external link) offers VOIP without a switch. It cuts out this formerly necessary component, needed almost since telephony began, by using peer to peer networking. PCs talking to other PCs, using PCs to connect. Very clever. They claim better audio quality than landline telephones. How? Since they base their network on DSL anchored PCs they'd have 128kbs paths to put voice on. Landline telephone circuits by comparison are allocated 64kbs. As long as the call is PC to PC it should sound good. But as soon as the call hits the Public Switched Telephone Network then quality will start to fall apart. Still, that's beyond their control, they have a good idea, and a method using a higher standard than, "Well, what can we get away with?"
Tomorrow: more VOIP rambling and the regulatory issues that threaten it.

