I am a fan of Mitchell Lazarus. This engineer-cum-lawyer, who is also a PhD in psychology, has brilliantly narrated the evolution of PSTN. He believes that regulating IP telephony is as challenging as “updating the rules of the road from horse-and-carriage traffic to modern automobiles.” It’s all about regulating the interconnected and non-interconnected VoIP services. There used to be a marked difference between the two: where interconnected VoIP needed no special skills, the typical non-interconnected VoIP customer was a highly computer-literate person with a headset plugged into a laptop.
Mitchell Lazarus practices law in Washington D.C. He also holds two degrees in electrical engineering and a doctorate in experimental psychology. His article – Radio’s Regulatory Roadblocks – is an outstanding piece. He also wrote The Great Radio Spectrum Famine thereafter.