SER vs OpenSER

SER was originally developed by the FhG Fokus research institute in Berlin, Germany, and released under the GPL license. The core developers of SER were Andrei Pelinescu-Onciul, Bogdan-Andrei Iancu, Daniel Constantin Mierla, Jan Janak, and Jiri Kuthan. Some contributors joined the project later, namely Juha Heinamen (RADIUS, ENUM, DOMAIN, URI), Greg Fausak (POSTGRES), Maxim Sobolev (NATHELPER), Adrian Georgescu (MEDIAPROXY), Elena Ramona Modroiu (XLOG, DIAMETER, AVPOPS, SPEEDDIAL), Miklos Tirpak (Permissions),
and others.

OpenSER is a fork of the original SER project. In 2004 FhG Fokus started a spinoff of the SER project creating the iptel.org. In 2005 the commercial variant of IPtel was sold to TEKELEC. The core development team was split in two. Three of them went to iptel.org (Andrei Pelinescu-Onciul, Jan Janak, and Jiri Kuthan). The other two (Bogdan Andrei Iancu and Daniel Constantin Mierla) left the FhG to start a company called Voice-System the main maintainer of the OpenSER project started in 2005.

OpenSER has become OpenSIPS