ChorusOS, sometimes called, improperly 'Chorus', is a highly scalable, reliable, POSIX compliant, embedded, realtime operating system; used by top telecom suppliers, in: public switches, PBXs, access networks, cross-connect switches, voice-mail systems, cellular base stations, cell-phones, web phones.
Growing article, with links to many related topics. Wikipedia.
ChorusOS 4.0 common documentation collection, ChorusOS 4.0 reference manual collection, ChorusOS 4.0 target family documentation collection.
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