The gnu ccscript package offers a class extensible threaded embedded scripting engine for use with gnu common c++. this engine is also used in gnu bayonne (the gnu telephony application server package) and other parts of gnucomm (the gnu telephony meta-project). this engine differs from traditional scripting systems in that it is used to script near real-time state-event systems through deterministic callback step execution rather than the linear and non-deterministic fashion of embedded script systems such as tcl, libguile, etc.