Fred Posner

SIP Expert

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Fred Posner and Yeni Monroy in Berlin
SIP Support

SIP Expert, VoIP Consultant

Fred Posner provides VoIP Consultant services through LOD Communications and The Palner Group, Inc. Active in the VoIP community, Fred works to empower business through professional communication systems.

Why SIP?

From voice to video, phones to webrtc, SIP connectivity remains essential to communication. An incredibly complex set of RFCs cover this protocol and having a seasoned expert's assistance can help with design, deployment, and troublshooting.

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FreeSWITCH Expert
FreeSWITCH Support


From Fortune 50 companies to family owned small businesses, Fred provides every customer with expert knowledge and real-world experience. Fred can provide you with custom programming, design, implementation, troubleshooting, emergency support, and more.

From call centers to database integration, carrier grade systems to simple IVR assistance, Fred's experience with Asterisk, FreeSWITCH, OpenSER (Kamailio), and other VoIP products will provide you the quality communications solution you need.


Fred actively participates in the VoIP Community, including ClueCon, Astricon, Kamailio World, and other groups/events providing support for Open Source and branded communication software.

Selected Video: APIBAN

Presented during ClueCon Weekly in April 2020.

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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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.