Hello, I am using Freeswitch to do some development work and encounter a problem with Event Socket. The configuration is: Freeswitch works as PBX. I also configure three softphones A, B and C. What I want is: 1. A call B. 2. B reject the call. 3. Freeswitch start conference involve A, B and C. What I did was: 1. Add perl script to the dialplan, so the perl script will be called after B reject the call from A. Worked fine. 2. In the script, I connected to localhost:8021 so the Freeswitch work in Inbound mode. Worked fine. 3. Then run $connection->execute to run "conference_set_auto_outcall" and "conference" command. Not worked. So I check the "parse_command" function in file "mod_event_socket.c", the following is what happened: Since I give the uuid to "$connection->execute" command, so FS doesn't care if it is Async mode or not. Actually FS just call function "switch_core_session_queue_private_event" to queue the event. Here is the problem, since B already reject the call, then nobody will call the function "switch_ivr_parse_event" to execute the command. I did try to add code to "parse_command" function to treat the Async and Sync mode differently when the uuid is provided. The conference was started successfully in Sync mode but since the "conference" application is blocked, my perl script was not able to move on since it was waiting for the "conference" to stop. If I choose "$connection->executeAsync", the commands were not run because of the reason I mentioned above. What is the proper solution for this? Thanks Hai Lei