Softswitch

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. MORE AT http://satisfyingsolutions.com 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

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.

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.

Finally a book from a known publishing house about softswitch. The book is about the definition, need and scope of the softswitch from both a technical and economic perspective. The piece dealing with the current trend and the future market is particularly well written. Highly recommended to the newbies as well as to the know-it-all folks of softswitch world.

"FINALLY, someone has taken the time and effort to define softswitch and lay out the architecture for a VoIP replacement of the PSTN. Author Ohrtman goes into painstaking detail to overcome the usual objections to VoIP in general and softswitch in particular, that is: reliability ("five 9s"), scalability,Quality of Service, features and applicaitons and signaling. Not only does this book lay out the technical details of this revolutionary/evolutionary technology, but the author also delves into the economics and politics of softswitch and VoIP. This book is both a snapshot of the telecom infrastructure of today as well as explaining how the PSTN will be replaced by an all-IP network. No serious telecommunications professional should be without this book!