Bogdan-Andrei Iancu entered the SIP world in 2001, right after graduating in Computer Science from the "Politechnica" University of Bucharest, Romania. He started in the early days of SIP as a researcher at the Fokus Fraunhofer Institute, Berlin, Germany. For almost four years, Bogdan-Andrei Iancu accumulated a quick understanding and experience of VoIP/SIP, being involved in research and industry project and following tight the evolution of the VoIP world.
In 2005, Bogdan-Andrei Iancu started his own company Voice System. The company entered the open source software market by launching the OpenSER/OpenSIPS project—a free GPL-SIP proxy implementation. As CEO of Voice System, Bogdan-Andrei Iancu pushes the company in two directions: developing and supporting the OpenSIPS public project (Voice System being the major contributor and sponsor of the project), and creating professional solutions and platforms (OpenSIPS based) for the industry. In other words, Bogdan's interest was to create knowledge (by the work with the project) and to provide the knowledge where needed (embedded in commercial products or in raw format as consultancy service).
In the effort of sharing the knowledge of the SIP/OpenSIPS project, together with Flavio E. Goncalves, the author of this book, he started to run OpenSIPS Bootcamp since 2008, an intensive training dedicated to people who want to learn and get hands-on experience on OpenSIPS from the most experienced people.
Bogdan-Andrei Iancu's main concern is to research and develop new technologies or new software for SIP-based VoIP (actually, this is the reason for his strong involvement with the OpenSIPS project), and to pack all these cutting-edge technologies as professional solutions to the industry.
SIP and OpenSIPS became a key factor in the VoIP world along the year—telephony providers, telcos, carrier grades started to adopt and use OpenSIPS as the core component of their VoIP network, because of its stability, performance, and security, but most importantly, because of its reliability as a project.
Justin Thomas Zimmer has worked in the contact-center technology field for twelve years. During that time, he has performed extensive software and computer telephony integrations using both PSTN and IP telephony. His current projects include system designs utilizing open source soft switches over more traditional proprietary hardware-based telephony and the integration of these technologies into market-specific CRM products.
As the Technical Partner of Unicore Technologies out of Phoenix, Arizona, Justin is developing custom business solutions utilizing open source software. Unicore's solutions present businesses with low startup costs in a turbulent economy.
He has worked on The Hopewell Blogs—a science fiction adventure novel that will be released online chapter-by-chapter, and available in print once the final chapter has been released.