Media praise for Switching to VoIP
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"Wellingford does a good job taking what can be complex material and making it understandable. An admirable task in itself...What makes this book stand out from other books I'd expect to see is that it doesn't just dwell on jargon and theory. There are a number of projects included in the book so you can get your hands dirty actually working with the technology. Add to that the fact that the author uses an open source PBX system called Asterisk for the exercises. So now you have no reason in terms of cost for not diving right in. "
-- , Duffbert's Random Musings