Fred Posner

Kamailio Consultant, VoIP Engineer, SIP Expert, and Baker

Yes, Baker

Fred's primary role is a VoIP Consultant, specializing in Open Source software including Asterisk, Kamailio (formerly OpenSER), and FreeSWITCH. Fred enjoys evangelizing open source telecom and has spoken at Kamailio World, Astricon, ITEXPO, Cluecon, Asterisk World, and more.

About Fred »

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).

Fred provides consultation services through The Palner Group, Inc. and LOD Communications. Clients include carriers, call centers, large enterprises, as well as small to mid sized businesses.

Fred Posner, SIP Expert

Not just a pretty face...

Learn more about Fred and the services he provides:


It's not a word to pronounce... just letters that rarely get confused when spelled out loud (over a phone for example). It's often a handle I use when coding, qxork. Not the most interesting story, but the truth rarely is.

Asterisk Expert

Fred Posner provides expert Asterisk consulting and assistance.

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Kamailio Expert

Fred Posner provides expert Kamailio consulting and assistance.

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FreeSWITCH Expert

Fred Posner provides expert FreeSWITCH consulting and assistance.

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