After almost one year, the new book about OpenSIPS is going to be published on the next week by Packt Publishing UK. This revision was really tough, it started with OpenSIPS 1.5,then in the middle of the book we decided to change to 1.6 using the beta version then, finally when the 1.6 was released, we discovered that many things had changed and a new rewrite was required to finally release the book on the latest version of the software. I hope you enjoy the new book, it will contain a code pack with all the code shown. The book will be available from Packt www.paktpub.com and in the main bookstores. OpenSIPS (former OpenSER) is one of the most advanced platforms for IP telephony using SIP. It is widely used by VoIP providers and large enterprises. I would like to thank the reviewers Bogdan andrei Iancu and Justin Zimmermann and to Packt Publishing staff that help me to make the book a reality. .
