Hello, Look in pjsua_app.c and look for static void ringback_start(pjsua_call_id call_id); static void ring_start(pjsua_call_id call_id); static void ring_stop(pjsua_call_id call_id); I think it should help you. Perhaps you want to play a file and not ring tone ? Samuel nitu dhanurved a ?crit : > Hi all, > can anyone tell me, how to add ring tone at incoming call....... > i am using playfile.c for playing ring tone in my project(i am > taking reference from pjsua 200line), it is giving me break point at > pj_mutex_lock in os_core_win32.c line no. 903......... > > > > Regards > New_bie > > > ------------------------------------------------------------------------ > > _______________________________________________ > Visit our blog: http://blog.pjsip.org > > pjsip mailing list > pjsip at lists.pjsip.org > http://lists.pjsip.org/mailman/listinfo/pjsip_lists.pjsip.org