The descriptions of our special guests that you can meet during the event on the 2nd of September, 2011, at FhG Fokus in Berlin, Germany.

The list of names is in alphabetic order, the bio for other special guests will be added here as soon as they confirm the participation.

Andrei Pelinescu-Onciul

He is the developer that started SIP Express Router (SER), the architect behind the core components such as configuration file interpreter, locking synchronization and memory managers, timers, transport layers (UDP, TCP, TLS and SCTP). He is the one that wrote the first line of code (and many more before anyone else got into the project) back in 2001.

During 2005-2008, Kamailio (OpenSER) (being a fork of SER) still relied a lot on his code. Starting with version 3.0.0, as a result of SIP Router project, Kamailio and SER share the same source code again.

Well known for his care about performance and stability, Andrei is today the main developer of, also supervising the contributions to, core and tm module.

You can listen to one of his very rare public appearances – VoIP Users Conference podcast:

• SER and Kamailio 3.0 Podcast

Bogdan Pintea

TBA

He developed his graduation thesis in Computer Science as part of an internship program at FhG Fokus. Since then he has contributed to SIP Express Router (SER) and SIP Express Media Server (SEMS) project.

Carsten Bock

Carsten Bock is a member of the development team of the Kamailio (OpenSER) project, currently working for Telefonica Germany in Hamburg on the deployment and operation of the new IMS-platform at Telefonica. He was among the leading technologists to develop and provide the first IP telephony solution as a real analog line replacement for Telefonica/O2 in Germany.

Carsten Bock has a Bachelor’s Degree in Computer Science from the University of Applied Sciences of Hamburg, Germany. He knows the Asterisk, SER and Kamailio (OpenSER) projects from the beginning, having many years of experience in the area of Open Source VoIP.

Currently he is working on integrating the OpenIMS core into Kamailio.

Dan Bogos

He is a voice and web technologies architect, offering consultancy via ITSysCom. Dan graduated Polytechnics University of Timisoara in 2002 and since then has worked in the telecomunications field. He is one of the early adopters of SER projects, using it to build customizable solution to integrate VoIP and web for building new communication meanings.

Daniel-Constantin Mierla

Daniel-Constantin Mierla co-founded in June 2005 Kamailio (formerly named OpenSER-Project.org), aiming to build a solid SIP server project where openess to community and contributions has an important role, previously being core developer of SIP Express Router (SER) from its early beginning in 2002. He has a Master degree in Computer Science and Engineering from the Polytechnics University of Bucharest. His experience was accumulated working as consultant for Orange Romania, branch of French Orange mobile operator, and researcher in network communications at Fraunhofer Fokus Institute, Berlin, Germany.

Among his goals with Asipto company is to build reliable services and solutions that benefit at maximum from Kamailio’s flexibility and features, sharing his knowledge and expertise via professional trainings and consultancy.

Daniel is a frequent speaker at SIP, VoIP and Open Source events, advocating Kamailio (OpenSER) and SIP Router projects while still being very much involved in development and community activity. He authored many of the available tutorials, like Devel Guide, Integration with Asterisk, Radius Integration, the Cookbooks for Core, Pseudo-Variables and Transformations, Step by Step Installations from SVN or GIT.

Dorgham Sisalem, Dr.

He is director for strategic architecture at Tekelec, responsible for Tekelec’s SIP Signaling Router. He cofounded iptelorg jointly with Jiri Kuthan in 2004. iptelorg, which was acquired in 2005 by Tekelec, provided the VoIP infrastructure for nearly all major German ISPs such as T-Online and Freenet.

Between 1995 and 2004 he worked at the Fraunhofer Institute heading the activities in the areas of VoIP and mobile communication. Dr. Sisalem received his Msc and PhD from the Technical University of Berlin in 1995 and 2000 respectively and has published more than 50 papers in referenced journals and conferences in the areas of QoS, VoIP and Security.

Dragos Vingarzan

Dragos Vingarzan graduated at the “Politehnica” University of Bucharest in February 2005 with a Diploma Thesis on the subject of service triggering in IMS, with a practical prototype implementation. During the 5-year study at the Faculty of Automatic Control and Computers he followed the Computer Engineering program on base software, compilers and computer networks.

Between 1999 and 2004, he gained valuable hands-on experience as a full-time employee at various national ISP and Telecom Operators. During this period he acted as software analyst/developer as well as project development leader in various projects for network monitoring, provisioning, management, billing and VoIP deployments. During 2004 he worked on his Diploma Thesis at Fraunhofer FOKUS, which represented the first milestone of the Open IMS Playground.

Since 2005 he is employed as a Scientific Researcher as the same institute, where he continued his work into the Open Source IMS Project, as well into feasibility and performance studies on NGN architectures.
Currently he is working on his PhD study in the area of IMS core networks, with special interests in prototyping, open source in telecommunications, performance benchmarking and interoperability. He is an active member of various IMS working groups.

Elena-Ramona Modroiu

Co-Founder of Kamailio (OpenSER) Project, Elena-Ramona Modroiu joined SER (SIP Express Router) in the spring of 2003, just after several months since the project was publicly released. She became one of the most active contributors, with key modules like avpops, diameter support, pdt, speeddial, uac, xlog. Elana-Ramona has a Master degree in Computer Science and Engineering from the Polytechnics University of Bucharest, Romania, completing the studies at Politechnics University of Valencia, Spain, and Fraunhofer Fokus Institute, Berlin, Germany. In summer 2005, she co-founded the OpenSER project, renamed in 2008 to Kamailio.

Nowadays she works as VoIP and Kamailio (OpenSER) consultant at ASIPTO, focusing on innovative solutions and integration of SIP and VoIP with web2.0. She manages Siremis Project – an open source web admin application for Kamailio (OpenSER) – and has authored many tutorials about the Kamailio project, including Devel Guide, Pseudo-Variables Cookbook or Radius Integration.

Henning Westerholt

Jiri Kuthan

He has been active in the VoIP innovation area since about 1998. Jiri began his carreer at research labs Fraunhofer Fokus in Berlin, Germany. The key result of his work in Fraunhofer in addition to several publications was a popular open-source SIP server, SER, www.iptel.org/ser/. SER software formed a technological foundation for the company started in 2004 in Berlin, iptelorg. The company was later (2005) acquired by Tekelec. Jiri has assumed AVP position in Tekelec then while preserving Managing Director positions within iptelorg Berlin-Germany and Prague-Czech Republic.

Constantly, his interest has been to have joy at work by doing hi-tec work advancing technology significantly.

Marcus Hunger

Marcus Hunger is a VoIP developer, involved from early beginning in SIP Express Router (SER) and Kamailio (OpenSER) projects. He contributed relevant patches and feedback based on his experience in designing and managing sipgate VoIP platform, blending Kamailio (OpenSER) and SER together with other Open Source VoIP applications to offer innovative services.

TBA

Mathieu Rene

He is the co-founder and CTO of Avant-Garde Solutions, a canadian company which specializes in VoIP products and mobile applications. Strong believer in the open-source ethos, Mathieu is always interested to bring a new light to old ideas.

Miklos Tirpak

TBA

Among the first external contributors to SIP Express Router (SER) after the project was released under open source license by FhG Fokus.

Olle E. Johansson

Originally a book publisher that started to work with computer networks in the mid-80’s. Founded Edvina in 1987, started distributing TCP/IP and Open Network software in 1989. Company grew to 40 employees. Worked closely with FTP Software, Andover, MA, USA. Worked as a CTO for FTP for a short while.

From 1996 to today worked as computer consultant, specialising in Open Network standards. In 2003, started to work with VoIP – mainly SIP networks for service providers. He has been active in the Asterisk.org Open Source community since 2003, as a developer, trainer, evangelist and conference organizer.

Raphael Coeffic

TBA

The founder of SIP Express Media Server (SEMS).

Stefan Broddesson

TBA

He is SIP achitect at Rebtel Networks, working to build scalable VoIP infrastructure to be able to sustain Rebtel services world wide.

Stefan Sayer

TBA

CTO and Co-Founder at FRAFOS GmbH, lead developer of SIP Express Media Server (SEMS).

Stefan Wintermeyer

CEO and founder of AMOOMA. Author of an Asterisk book ( http://www.the-asterisk-book.com ). Before working with VoIP solutions he was CEO at OTRS which does open-source trouble-ticket-systems. Stefan started his open-source career as a vice president for SuSE Linux in 1998. He is a very open-source minded guy who even published his book under the FDL. AMOOMA is a German company which offers mainly VoIP consulting in Europe.

Thomas Magedanz, Prof. Dr.

He is professor of the chair for Next Generation Networks (AV – Architektur der Vermittlungsknoten in German) in the electrical engineering and computer sciences faculty of the Technische Universität Berlin, Germany, where he is educating masters and PhD students in the fields of multimedia Service Delivery Platform technologies on top of converging fixed and mobile networks, Next Generation Networks, and the Future Internet.

In addition, he leads the Next Generation Network Infrastructures (NGNI) Competence Center at Fraunhofer Institute FOKUS (formerly known as GMD Institute FOKUS) in Berlin, Germany, where he is responsible for the performance of major international R&D co-operations and related projects in the context of next generation telecommunications infrastructures. In this context he is a globally recognized pioneer of the development and delivery of advanced network and service technology testbeds and related software tools in the fields of Next Generation Networks and the emerging Future Internet for both academia and industry. Well known examples include the Open IMS Playground and the Open SOA Telco Playground.