Saw this article about Time Warner bringing VoIP to NYC
What's interesting to note is that Time Warner was at least somewhat "honest" about the technology they are using as compared to Cox (see this blog entry). That is, Howard Szarfarc, the president of Time Warner Cable of New York & New Jersey, stated that TWC's Digitalphone initiative is different from other VoIP-based businesses, because it does not use the "public" Internet to make calls. (There goes that FUD about public Internet calling again)
Anyway, he explained the new service is enabled by TWC's Hybrid Fibre Coaxial (HFC) network, which is the backbone for its RoadRunner high-speed broadband, Video on Demand (VoD) and Digital Video Recorder (DVR) services. Digitalphone calls begin on the TWC network and travel to their regional data center in New York City. Sprint then completies the call across its network.
Even with his explanation, what is unclear to me is whether this Digitalphone service is voice-over-coax or voice-over-IP using the customer's broadband pipe. It sounds like it's voice-over-coax and not VoIP. So scratch my statement about Time Warner being honest. I guess Time Warner bought Ted Turner's ethics when they bought CNN. Just kidding...
Seriously, though, I wish they wouldn't confuse VoIP with digital Voice-over-Coax.