Yes, this was exactly my problem with session variables. Seems I've been using freeswitch git version where perl ESL event filtering was broken. I saw a thread about this on mailing list. I'll try with latest git.

2011/3/1 Steven Ayre <steveayre@gmail.com>
Yes... Problem is how to get it. One way is the CDR, but that's not through ESL. Events are another - it'll be sent as a header. There's the uuid_getvar api but that won't work if the session has been destroyed.

Steve on iPhone

On 1 Mar 2011, at 14:04, Diego Toro <dftoro@yahoo.com> wrote:

Hi, check originate_disposition variable

http://wiki.freeswitch.org/wiki/Extension_Status_Example
http://wiki.freeswitch.org/wiki/Variable_originate_disposition

Diego Toro
http://voipensando.blogspot.com/

--- On Tue, 3/1/11, Steven Ayre <steveayre@gmail.com> wrote:

From: Steven Ayre <steveayre@gmail.com>
Subject: Re: [Freeswitch-users] HANGUP_CAUSE after bridge in outbound ESL
To: "FreeSWITCH Users Help" <freeswitch-users@lists.freeswitch.org>
Date: Tuesday, March 1, 2011, 4:08 AM

The correct way is to use events. You can register for just the hangup event.

-Steve


On 28 February 2011 22:43, Dmitry Sytchev <kbdfck@gmail.com> wrote:
> Hi All
>
> What is correct method to get bridge status after execute("bridge") in ESL?
> I have inbound call that gets bridged to SIP endpoint. I need to know
> whether it was ORIGINATOR_CANCEL or BUSY or something else, but if I use
> sync, seems I can't determine ORIGINATOR_CANCEL status, because it is set on
> a-leg which is destroyed first after hangup.
>
> Is there a way to get bridge status without messing with events and event
> source filtering by channel uuid or event type?
>
> --
> Best regards,
>
> Dmitry Sytchev,
> IT Engineer
>
> _______________________________________________
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>
>

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--
Best regards,

Dmitry Sytchev,
IT Engineer