[Freeswitch-users] Run dialplan tools from event socket

João Mesquita jmesquita at freeswitch.org
Fri Jan 21 06:48:36 MSK 2011

Lucky for you I have been working on this lately and the bad news is ...
there's no easy way to do it....

You can execute an extension like you said, but you have to park the legs
first... It would help to know how's the transfer_call extension so that I
can try to help you out, but maybe it is easier if you think of it this way:

When you use an app like att_xfer, the core already knows what to do next
with a call and parks the legs for you. If you do it on ESL, you've done it
half way and you didn't really park anything before you transfered the call.
When the bridge is undone, the leg that was not transfered doesn't know what
to do, has no applications to be run at this moment and so all it's left for
it is to let go.

A bit clearer? Att_xfer is a bit of a pain in the butt and it kinda requires
you to know a bit more of the inner workings of the state machine.

You can always execute att_xfer using ESL's execute (
http://wiki.freeswitch.org/wiki/Event_Socket_Library#execute) if you don't
care what happens to the legs afterwards but if you want to have control
over all 3 legs, no luck for you...

João Mesquita

On Fri, Jan 21, 2011 at 12:13 AM, Fraser Redmond <fraserredmond at gmail.com>wrote:

> Is there any way to run a dialplan tool from the event socket?
> I have a dialplan that uses a dtmf to set up and perform an attended
> transfer, like so:
> <action application="bind_meta_app" data="8 a s
> execute_extension::TransferCall XML transfer_call"/>
> But I can't see any way to run the same thing from the event socket. I
> thought doing an  "api uuid_transfer"  might do it, but that hangs up one of
> the legs (no good for attended transfer.)
> api uuid_transfer Uuid -bleg TransferCall XML transfer_call
> As far as I can see, the closest thing is "sendmsg execute", but it looks
> like you have to park a call/channel first to use that, so I'm not sure that
> that is much use for attended transfer either.
> Or should I be lame and do "api uuid_send_dtmf" to send * 8.
> Cheers,
> Fraser
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