[Freeswitch-users] Timers/DTMFs During a Call

delianSPAM delianspam at gmail.com
Wed Aug 26 23:52:35 PDT 2009

Looks like I was wrong about using the native Python timers. Here is how
they can be used in your script:


# Imports - add these new imports

import time

import threading


# class definitions - add this new class

class Timer(threading.Thread):

                def __init__(self, seconds):

                               self.runTime = seconds


                def run(self):


                               console_log("debug", "TIMER


# entry point - add two rows in the entry point function that is called from

def handler(session, args):


 t = Timer(10)




So what is now remaining is to get when the call CONNECTS and how to get
DTMFs during the call. 


From: delianSPAM [mailto:delianspam at gmail.com] 
Sent: Thursday, August 27, 2009 9:35 AM
To: 'freeswitch-users at lists.freeswitch.org'
Subject: RE: [Freeswitch-users] Timers/DTMFs During a Call


Hello Michael!


Thank you for your reply! I know about sched_api and I use Python as a
scripting language. Also "sched_api" can be used inside python, using
session.execute. However the problem is that the "sched_api" timer starts
right after you initiate the SETUP of the second call leg. What I need is to
call something, after a call CONNECT instead. One workaround would be if I
can check what time it took to connect the call, but I do not know/see how
to do this. I do not see a CONNECT callback function either.


Best Regards, Delian Tashev

P.S. Dear enlightened people, thank you for providing help to the community
by replying to the list e-mails.


From: Michael Collins [mailto:msc at freeswitch.org] 
Sent: Wednesday, August 26, 2009 11:28 PM
To: freeswitch-users at lists.freeswitch.org
Subject: Re: [Freeswitch-users] Timers/DTMFs During a Call


Do you actually need Python for the IVR, or is it that you're comfortable
using a scripting lang for an IVR? I like using XML for IVRs, but using
scripting langs does give you a bit more power & flexibility at the cost of
some resources.

For the record, you can do this in the dialplan using XML and sched_api
without touching a scripting language. Checkout the sched_api channel
variable on the wiki - it may give you the functionality you need.


On Wed, Aug 26, 2009 at 7:59 AM, delianSPAM <delianspam at gmail.com> wrote:

Hello Everybody!


1.       Scenario.

I am writing an IVR in Python that gets a destination from the calling party
(party A) and then connects to the destination (party B).

When the call is CONNECTED, I want to:

-          Receive DTMFs

-          Have a timer that can call a certain function in my script. The
script will have to play a message to party A.

-          Have a timer that can call a certain function in my script. The
script will have to drop the call.

Please notice that I want to do the things after the two parties are
connected, and not after I send the Invite to party B.


2.       Problem.

I will be happy to receive help on:

-          Which methods should I look for to implement this.


3.       Details

Here is how I connect the call currently:

session.execute("bridge","sofia/internal/" + destination_number +


I have tried to create a timer callback function "my_method()" using:

ivr_timer =threading.Timer(30,my_method)

This never called the function "my_method()".


Maybe I am wrong in using threading.Timer and the "bridge" application?
Maybe I need to create a new thread and a new timer using the API of
freeswitch, plus to use the "session.setInputCallback", plus use a
conference rather than a bridge? Can you please provide any suggestions or


Thank you!

Best Regards, Delian Tashev

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FreeSWITCH-users at lists.freeswitch.org


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