[Freeswitch-users] Unanswered pstn outbound call via gateway detection

Ciprian Dosoftei ciprian.dosoftei at gmail.com
Fri Nov 15 16:24:55 UTC 2019

Tanim --

Since you are using ESL, you should monitor the status of the outbound
channel you've originated -- you should do that by channel ID, either the
generated one or you could preset it via the origination_uuid variable.

During the channel's execution you will see a bunch of CHANNEL_* events
streamed via ESL; the relevant event for your question is CHANNEL_HANGUP.
You can extract the reason behind the hangup from the Hangup-Cause header
(could be CALL_REJECTED, USER_BUSY etc. here's a comprehensive list

Conversely, if the call is picked up, you will see a CHANNEL_ANSWER event
coming through.

On Fri, 15 Nov 2019 at 10:59, Md,Mehedi Hasan Kabir(Tanim) <
tanim at surroundapps.com> wrote:

> Hi
> I have originated outbound call to pstn number using gateway provider
> flowroute with originate command. I am using python ESL to achieve this.
> If the call is not answered by pstn user, then i need to post status to my
> webserver .
> Can anyone suggests me how i can detect whether the pstn call is answered
> or not?
> Thanks
> Tanim
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Best Regards,
Ciprian Dosoftei

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