Face it, 7D is dead; and even if overlays had not arrived, cell
phones would have killed it. Once you learn to think 10D, it's
trivial.
Oh, you ignorant rednecks.* Even my cell phone has 7D dialing and
it'll be a century before overlays arrive where I live.
The reason that it makes sense for an ISP to warn its customers about
surprise toll calls is that toll rates have gotten so low that for the
most part, we don't worry about them. Due to the peculiar
telegeography in my area, a 7D call within my area code could be
local, intra-LATA toll, or inter-LATA toll. But the most expensive of
those is 8 cents/min so for voice calls, I don't care, and I really