I am attempting to interrupt the ringback audio at regular intervals with announcements while a bridge is in progress. Everything is going fine - the far end is ringing, the ringback audio is playing, the first displacement is heard, but subsequent displacements are not. I am using an outbound ESL connection, FreeSWITCH version 1.2.3. First, the ringback audio is set: esl_execute(handle, "set", "ringback=file_string://'../sounds/music/8000/suite-espanola-op-47-leyenda.wav'",NULL); Next, the bridge is initiated: esl_execute(handle, "bridge", "user/1001",NULL); Now, a displacement is scheduled for 5 seconds in the future: esl_send_recv(handle, "api sched_api +5 none uuid_displace <uuid> start digits/1.wav"); After each MEDIA_BUG_STOP event is received, another displacement is scheduled. The log file shows successful attempts are being made to play the displacement audio: 66017ce6-23c8-4df1-accc-6275eed8fc45 2012-12-04 18:25:39.161496 [DEBUG] switch_core_media_bug.c:506 Attaching BUG to sofia/internal/1000@192.168.1.136 2012-12-04 18:25:39.161496 [DEBUG] mod_commands.c:3894 Command uuid_displace(66017ce6-23c8-4df1-accc-6275eed8fc45 start digits/1.wav): +OK Success 2012-12-04 18:25:39.161496 [DEBUG] switch_scheduler.c:138 Deleting task 17 sched_api_function (none) 66017ce6-23c8-4df1-accc-6275eed8fc45 2012-12-04 18:25:39.641496 [DEBUG] switch_core_media_bug.c:724 Removing BUG from sofia/internal/1000@192.168.1.136 2012-12-04 18:25:39.761496 [DEBUG] switch_scheduler.c:214 Added task 18 sched_api_function (none) to run at 1354667144 66017ce6-23c8-4df1-accc-6275eed8fc45 2012-12-04 18:25:44.161496 [DEBUG] switch_core_media_bug.c:506 Attaching BUG to sofia/internal/1000@192.168.1.136 2012-12-04 18:25:44.161496 [DEBUG] mod_commands.c:3894 Command uuid_displace(66017ce6-23c8-4df1-accc-6275eed8fc45 start digits/1.wav): +OK Success 2012-12-04 18:25:44.161496 [DEBUG] switch_scheduler.c:138 Deleting task 18 sched_api_function (none) 66017ce6-23c8-4df1-accc-6275eed8fc45 2012-12-04 18:25:44.181496 [DEBUG] switch_core_media_bug.c:724 Removing BUG from sofia/internal/1000@192.168.1.136 2012-12-04 18:25:44.341496 [DEBUG] switch_scheduler.c:214 Added task 19 sched_api_function (none) to run at 1354667149 66017ce6-23c8-4df1-accc-6275eed8fc45 2012-12-04 18:25:49.161496 [DEBUG] switch_core_media_bug.c:506 Attaching BUG to sofia/internal/1000@192.168.1.136 2012-12-04 18:25:49.161496 [DEBUG] mod_commands.c:3894 Command uuid_displace(66017ce6-23c8-4df1-accc-6275eed8fc45 start digits/1.wav): +OK Success 2012-12-04 18:25:49.161496 [DEBUG] switch_scheduler.c:138 Deleting task 19 sched_api_function (none) 66017ce6-23c8-4df1-accc-6275eed8fc45 2012-12-04 18:25:49.181496 [DEBUG] switch_core_media_bug.c:724 Removing BUG from sofia/internal/1000@192.168.1.136 2012-12-04 18:25:49.341496 [DEBUG] switch_scheduler.c:214 Added task 20 sched_api_function (none) to run at 1354667154 66017ce6-23c8-4df1-accc-6275eed8fc45 2012-12-04 18:25:54.161496 [DEBUG] switch_core_media_bug.c:506 Attaching BUG to sofia/internal/1000@192.168.1.136 2012-12-04 18:25:54.161496 [DEBUG] mod_commands.c:3894 Command uuid_displace(66017ce6-23c8-4df1-accc-6275eed8fc45 start digits/1.wav): +OK Success Any guidance would be appreciated. Thanks, Scott