Hi, >From the documentation I understood that this: MediaPort *mp = Endpoint::instance().audDevManager().setNoDev(); unregisters the audio-device and returns a structure which allows you to set callbacks for your own audio-processing. What I could not find his: how can I re-register this MediaPort? Because currently I get no callbacks at all. _______________________________________________ Visit our blog: http://blog.pjsip.org pjsip mailing list pjsip@xxxxxxxxxxxxxxx http://lists.pjsip.org/mailman/listinfo/pjsip_lists.pjsip.org