We all know that computers, generally speaking, have not been as reliable as phones. And the fear, uncertainty, and doubt (FUD) surrounding voice over Internet protocol (VoIP) has been, in some cases, justified. However, for VoIP the question now is not whether reliability can be achieved, but rather how much reliability you can expect from the options available to you.
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know that computers, generally speaking, have not been as reliable as phones, and there is still a lot of FUD (Fear, Uncertainty, and Doubt) circulating about VoIP. And in fact, there have been VoIP implementations that cannot be called reliable. However, there is no longer any question that highly available VoIP systems can be delivered on any of the three basic architectures discussed in this paper. It is now a question of how such reliability is achieved, not whether it can be achieved. For VoIP