Softswitch : Architecture for VoIP
Dec.25, 2009 in
Northern Colorado VoIP Products
Product Description
Bypassing the old circuit-switched hardware, softswitches streamline message traffic and provide a much more efficient service development environment. Along with SIP, this technology leverages Internet technologies to replace plain-old-telephone service. Developers who are freed up by softswitch technology to build cost-effective 3G serives will learn how it works and what applications it can support. Network managers making hard decisions about whether to deploy VoIP will learn pros and cons, costs and benefits, and most importantly how to separate myth from reality…. More >>
December 25th, 2009 at 4:57 pm
This is the book that traditional switchmakers like AT&T, Nortel, Ericsson, Siemens and Alcatel and LECs like Verizon and QWest don’t want you to read. Softswitch poses a highly disruptive threat to telecom monopolies. This book pulls no analytical punches in pointing out how the array of softswitch technologies (Class 4 and 5 replacement, IP Centrex, and IP-PBX) provide a lower barrier to entry to the service provider market and how this technology saves existing service providers in terms of OAM&P. If legacy telephone companies want to survive into the next decade, they must learn the lessons contained in this book.
Rating: 5 / 5
December 25th, 2009 at 6:58 pm
The book can be interesting for anyone wants a first contact with Voip technology, however, the constant repetitions in the text, such as the countless mentions of the “Lucent 5ESS 3500 features”, the “Clayton Christiensen axiom” and many others, make reading this book an extremely boring experience. I estimate that a basic review of the text for a second edition, can cut off roughly 10% of the text (and hopefully, the price too).
Rating: 3 / 5
December 25th, 2009 at 8:24 pm
Mr. Ohrtman spends much of the book to argue his case for VOIP rather than discussions of how it works and how it interfaces with the PSTN. The technical discussions, especially for the local loop alternatives, were very basic and not of much value.
Rating: 2 / 5
December 25th, 2009 at 9:32 pm
Ohrtman explains the basic structure and the functionality of VoIP technology, with a respective amount of indepth information he does a good job in explaining each criteria.
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This book has fifteen interesting chapters.
Chapter one explains the reliability and quality of service while chapter two goes on to talk about voice digitization and signaling.
Chapter three explains IP phones and chapter four explains thoroughly what VoIP is.
Chapter five: SIP is introduced,
chapter six is about switching and chapter seven explains human error.
Next, chapter eight talks about quality of service and improving QoS on the network.
Chapter nine is about interworking SS7 and VoIP Networks and SIP for telephones;
chapter ten explains features and applications and application programming interfaces.
Next, chapter eleven is titled Softswitch economics and talks about bandwidth saving while chapter twelve is about deconstruction of service providers and disruption of the legacy telecommunications value network.
Chapter thirteen is about broadband along with converged networks independent of ILEC infrustructure and chapter fourteen is about the past, present, and future of softswitch and functional entities.
Lastly chapter fifteen is basically the conclusion of all points made in the previous chapters.
Ohrtman teaches the concepts and structure of VoIP technology throughout the book. To summarize the book, he shows how softswitches will affect systems, services, and vendors and how one can learn how to get hardware level quality, scalability, and signaling from a softswitch.
It also explains clearly the technology of VoIP along with the risks and payoffs. This book is an excellent tool to learn about VoIP technology, if one likes new innovative technology this book would be a good recommendation.
The average person would find the content of the book to be quite hard to comprehend or somewhat confusing but overall it has interesting facts and one can enhance their intellect fairly well.
A. J. Baltes
Rating: 5 / 5
December 25th, 2009 at 10:53 pm
We get a lot of inquiries from our corporate customers asking if and how they should transition to VoIP. Usually, we send them a copy of this book and we always get the contract to switch over the customer to a VoIP infrastructure. This book has done wonders for our business.
Rating: 5 / 5