[Freeswitch-users] Trouble With 'transfer' DP After a 'bridge' on Async Event Socket

Joseph Crivello josephcrivello at gmail.com
Mon May 3 04:36:23 PDT 2010

Hello All,

I am currently working on a conference bridge based on FreeSWITCH that
allows some conference members to dial out to a prompted number.

Currently my implementation binds * in conference.xml to the "transfer"
action, leading to a dial plan extension that runs an async full outgoing
event socket. My application serving the event socket does the following:

1) Verifies the user is allowed to dial out, and writes a record to the
2) Retrieves the number to be dialed with 'play_and_get_digits'
3) Bridges the call to the dialed number
4) Waits for the a-leg to press star
5) Uses 'transfer' to transfer both legs back to the conference 

Everything works up to step #5, which does nothing. 

There is no NOTICE outputted to the console indicating that a transfer is
taking place and neither leg is rejoined to the conference.

I get a normal event back after the transfer sendmsg:

Content-Type: command/reply
Reply-Text: %2BOK

If I subscribe to all events before running the transfer and receive events
in a loop, I receive nothing but routine RE_SCHEDULE and CALL_UPDATE events
after the transfer.

I am using ESL to communicate with FreeSWITCH, and prior to running any of
steps #1-5 I set the event lock to true. The line from the dial plan
extension that calls my application follows:

<action application="socket" data=" async full" />

Any ideas? Perhaps I'm "doing it wrong"? I am very new to FS.

Joe Crivello

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