Hi! By default aectest is not compiled :-/ Edit pjsip-apps/build/Samples.mak and add aectest to the build target list: SAMPLES := auddemo \ confsample \ aectest \ encdec \ ..... Then compile as usual: ./configure && make dep && make and you'll get the aectest binary file in bin/samples/i686-pc-linux-gnu/ directory. Regards, -- /Sa?l http://www.saghul.net | http://www.sipdoc.net