Fred Posner

Kamailio Consultant, VoIP Engineer, SIP Expert

Fred's primary role is a VoIP Consultant, specializing in Open Source software including Asterisk, Kamailio (formerly OpenSER), and FreeSWITCH.

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Fred Posner and Yeni Monroy in Berlin
Fred Posner Solutions Oriented Professional

Kamailio / SIP Expert

For more than 15 years, Fred Posner has provided VoIP consulting services; specializing in open source communication products such as Kamailio, Asterisk, and FreeSWITCH. Clients utilize Fred's services for design, implementation, and support (including emergency support).

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Have 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 recognizing his support and contributions.

About Fred
Simcon Award
SIP / VoIP Engineer

Open Source VoIP Consultant

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Kamailio Support

Kamailio expert, speaker, and consultant. Proudly working with Kamailio/OpenSER since 2005.

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Asterisk Support

Asterisk expert, speaker, and consultant. Proudly working with Asterisk since 2003.

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FreeSWITCH Support

FreeSWITCH expert, speaker, and consultant. Proudly working with FreeSWITCH since 2008.

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Testimonials

Fred utterly embodies the definition of 'reliability' and 'quality'.

Dean Wells, Principal Program Manager

Fred should be your go to guy.

Michael White, Principal @ .e4

A tireless and enthusiastic advocate on behalf of the Kamailio project and, more broadly, in the service of the open-source VoIP ecosystem.

Alex Balashov, SIP Expert

Fred has a very strong work ethic and is a great problem solver.

Andy Day, VP Carrier Services

Fred's problem solving skills have a razor precision that borders on freakish.

Fred Posner

Fred's primary role is a VoIP Consultant, specializing in Open Source software including Asterisk, Kamailio (formerly OpenSER), and FreeSWITCH. Fred Posner provides consultation services through The Palner Group and LOD Communications.