Rating: 
Summary: If you do TAPI - you absolutely need this book
Review: TAPI is a very complex win32 API, and Chris tells a story which makes it possible for mere mortals to take it on. Very well written, if you are doing or thinking about doing TAPI you need it. I highly recommend this book
Rating:
Summary: The best source of TAPI out there
Review: TAPI is a VERY complicated API, but Chris does a good job of introducing it to the reader. With the added sample code and Chris's Tfx API to TAPI, this book becomes its worth in gold. I highly recommend this book.
Rating: 
Summary: High scores on a book well written
Review: The "Developers Guide to TAPI" provides an introduction and selected advanced topics for the windows developer who is a TAPI novice. As a dyed in the wool "C" hacker, I found Mr. Sells C++ class library somewhat confusing, but this shortcoming is mine and not Mr. Sells.I believe that the technical material, examples and the method of presentation is a great deal more user friendly than much of the content of the MSDN library series to which I have been a subscriber and user.
Rating:
Summary: High scores on a book well written
Review: The "Developers Guide to TAPI" provides an introduction and selected advanced topics for the windows developer who is a TAPI novice. As a dyed in the wool "C" hacker, I found Mr. Sells C++ class library somewhat confusing, but this shortcoming is mine and not Mr. Sells. I believe that the technical material, examples and the method of presentation is a great deal more user friendly than much of the content of the MSDN library series to which I have been a subscriber and user.
Rating: 
Summary: Ferociously misplaced accents
Review: The "good old petzold" -- why has it always been and still remains so good? Because Charles Petzold went laboriously over the *Windows API*, and described its operation in a detailed, blow-by-blow account. No feats of design, no showing off of the personal greatness by concocting something very great on top of the OS interface, just the API, so that the reader could learn how the thing works and then apply it in his own work. Richter did the same in his Windows programming books, and they're deservedly respected by the programming community too. Why am I talking about this? Because the author of "Windows Telephony..." did exactly the opposite. Perhaps he's a great C++ programmer and an excrutiatingly gifted software designer, but what I needed was a description of TAPI in its most nitty-gritty detail, not the author's C++ library he built on top of it. I can't use his library (nor do I like the way it's designed, btw) while the TAPI's "bare" functionality is not covered in sufficient for my needs detail. Which resulted in a pretty damn useless book. Which is a shame, given a dearth of information on the topic.
Rating:
Summary: Excellent explanation of TAPI and background
Review: The book starts by giving some background information on TAPI, then explains how TAPI works. The examples are for MFC, but can be adapted to plain C++, mostly not to difficult. For me, experienced in C++ (not MFC but Borland's OWL) but never done any telephony work, this book was exactly what I was looking for. C++ experience is mandatory, Visual Basic will not do with this book.
Rating:
Summary: Good for TAPI basics, but fails in depth.
Review: The intro to TAPI starts out well, but many in depth TAPI features are not well covered. Most noticeably missing is more than a perfunctory coverage of transmissing/receiving data through TAPI. The book's main thrust is voice emulation. This book was recommended to me, but I would have difficulty recommending to anyone else.
Rating:
Summary: The best TAPI book
Review: There are not many books about TAPI, but even if there were thousands, I'm sure this one would still be highly rated. The book gives clear overview of both TAPI architecture and development principles. The author accompanies the book with well-designed C++ classes wrapping TAPI functions (source code can be downloaded) which do not only illustrate how to use TAPI but provide a good starting base for any professional TAPI application. I also liked the author's writing style.
Rating:
Summary: The TFX alone is worth this book.
Review: This book not only gives a clear insight into TAPI but also helps those programmers struggling with TAPI function calls and event handling in today's object oriented world. Chris takes the system level API and provides an elegant Application level API. He has saved me many, many hours of work. Thank you Chris!
Rating:
Summary: A Great Book for TAPI Programming
Review: Well done on the author Chris Sells. A tiny simple book with huge complexity of coding on it. Great efforts in simplifiying many of the mysterious coding in TAPI- where Microsoft had missed. It's a gateway for further TAPI development for Pros. Good source of supports as well. Looking forwards for the author's next "TAPI 3.0 book" comming...
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