[Freeswitch-users] Displacing ringback audio during bridge - only first displacement heard

[Scott Beil]

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 at 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 at 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 at 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 at 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 at 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 at 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 at 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