Next is the list (with most) of the accepted speakers — full details will be published soon:
- Alexandr Dubovikov, QXIP – Homer SIPCapture Project, Germany
- Andreas Granig, Sipfront, Austria
- Andreas Tarp, Sipgate, Germany
- Dan Jenkins, NimbleApe, UK
- Dan-Christian Bogos, ITSysCom, Germany
- Daniel-Constantin Mierla, Asipto – Kamailio Project, Germany
- Dorgham Sisalem, Frafos, Germany
- Dragos Vingarzan, Neat Path Networks, Germany
- Elena Dariba, CloudTalk, Portugal
- Elena-Ramona Modroiu, Technische Universität Berlin, Germany
- Fred Posner, Lod.com, USA
- Giacomo Vacca, Signalwire/FreeSwitch, USA
- Henning Westerholt, Gilawa, Germany
- Iurii Gorlichenko, IN8INITY, Netherlands
- James Body, Telet, UK
- Jan Janak, Columbia University, USA
- Jiri Kuthan, Iptel.org, Czech Republic
- Jonathan Kandel, Cellact, Netherlands
- Julien Chavanton, Raven Technologies, Canada
- Lorenzo Miniero, Meetecho – Janus Gateway, Italy
- Mack Hendricks, dOpenSource, USA
- Markus Monka, Sipgate – Kamailio Project, Germany
- Mathias Pasquay, Pascom, Germany
- Roman Onic, Kontron Transportation, Austria
- Sandro Gauci, Enable Security, Germany
- Tim Panton, |pipe|, UK
- Victor Seva, Kamailio Project, Spain
- Viktor Litvinov, Net2Phone, Spain
- Wolfgang Kamplicher, Frequentis, Austria