Since this was already mentioned, let me just reiterate it. Hospitals are known for having little to no cellular coverage. People, especially doctors are aware of the existence of cellular phones, and how advanced it has become. In fact, it is so advanced that anyone can have one. This brings us to the fact of professional distinction. Let's face it, there are time when calls made to a cellphone are ignored, because it would be thought of as nothing but a social call. High quality pagers give a sense of urgency, because of the industry that it is used for/ No one would page you just for a social purposes. Let face it, we blame technology for mishaps, when in fact technology only runs through human fuel.