Fred Posner
Fred's primary role is a VoIP Consultant, specializing in Open Source software including Asterisk, Kamailio (formerly OpenSER), and FreeSWITCH.
For more than 20 years, Fred has provided SIP/VoIP Engineer consultation services including architecture, design, support, and more.
Open Source VoIP Consultant
Fred provides SIP/VoIP Engineer consultation services including architecture, design, support, and more.
Kamailio
Kamailio expert, speaker, and consultant. Proudly working with Kamailio/OpenSER since 2005.
Kamailio ConsultantAPIBAN
Fred launched APIBAN as a free service to help protect SIP servers from unwanted SIP traffic.
APIBANFreeSWITCH
FreeSWITCH consulting since 2007. A great cross-platform telephony platform / PBX.
FreeSWITCH ConsultantAsterisk
Asterisk consulting/support since 2002. Another telephony platform / PBX.
Asterisk ConsultantHave SIP. Will Travel.
Fred enjoys evangelizing open source telecom and has spoken at Kamailio World, Astricon, ITEXPO, Cluecon, Asterisk World, and more.
Fred loves the open source VoIP community and was honored to receive a 2019 SimCon Award (Pre-Posthumous Legend) recognizing his support and contribution.
Testimonials
Selected Video
Open Source Software Myths
Presentation from Kamailio World 2018 in which Fred discusses common myths regarding Open Source software.