Not long ago a tragedy happened during a home invasion robbery in Texas. An elderly couple was attacked and nearly killed while their daughter, hiding in an upstairs room, frantically dialed 911. What she got instead of the lifesaving help she needed was a recording saying that the service wasn't available.
Welcome to the world of Voice over IP.
When four hurricanes in a row smashed into Florida last fall, cell phone service went away almost immediately as towers fell, others were left without power and what few cells remained operational were being used by emergency services. Ordinary citizens were unable to make cell phone calls, even if they needed to call for help.
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