[Freeswitch-users] Dial multiple users for "conference" call

Bote Man bote_radio at botecomm.com
Wed Jan 13 18:29:35 MSK 2016

Oh dear! Loopback is evil and should be used sparingly and carefully.


Having said that, I use loopback in my outbound conference dialplan extension to play an alert tone at the beginning of the call using tgml, then it hangs up and goes away. Nothing much to go wrong there, so it’s not very evil.


Loopback tells FS to make another pass through the dialplan (loop back through the dialplan) searching for the number or string specified to loopback. If you get spurious matches, you should refine your dialplan further to match only the desired extension.


As anthm is fond of saying, the XML dialplan is not a script processor, it’s a basic routing mechanism. You might have enough complexity to require a script to parse and process those outlier numbers without country code, I don’t know. That’s above my pay grade J


Just saw your follow-up message. Perhaps try the “export” app instead of the “set” app to make sure that your custom channel variables get exported to the B-leg of the loopback app? Just a shot in the dark, but loopback does generate A- and B-legs apparently.


Hope this helps.





From: Michael Nielsen
Sent: Wednesday, 13 January, 2016 07:55
Subject: Re: [Freeswitch-users] Dial multiple users for "conference" call


Hi Bote,


Thank you so much for all your detailed info. That helped a lot and solved almost everything.


Final question... When I use the <action application="conference_set_auto_outcall" data="loopback/293234"/>, doesn't loopback means that it's try and dial 293234 from a matching dial plan already existing within my FreeSWITCH?


The case is, that I've got a dial plan recognising expression="^(\d{3,20})$" etc. 

And if a number doesn't contain a valid country code I'll append it automatically according to the subscriber who initiate the calls.

So my subscriber for example has a variable set country_code = +44. When I dial something it appends +44 if there is no country code.


This works if I call something else than my conference dial plan, but when calling the conference dial plan and using loopback it doesn't work.


Does it make sense and can you help?


On Tue, Jan 12, 2016 at 6:44 PM, Bote Man <bote_radio at botecomm.com> wrote:

Michael, I make extensive use of the FreeSWITCH outbound conference calling feature. I recently figured that I got the results that you (and I) desire with these 2 lines in the dialplan of the extension that initiates the outbound conference call:


<action application="set" data="conference_auto_outcall_caller_id_name=${caller_id_name}"/>

<action application="set" data="conference_auto_outcall_caller_id_number=${caller_id_number}"/>


It’s not clear to me which of the many, many, many Caller*ID variables are the best to use overall, but these are the ones that send the originating extension number and name as FreeSWITCH knows them to the dialed conferees. I find that effective_caller_id_number is not always effective J


Of course, you can set caller_id_* to effective_* or any other assignments as needed; experimentation yields a lot of knowledge here. Use the “log” application liberally in your conference dialplan extension to display as many variables as you need to determine which holds the desired values, that’s how I did it. A lot of them are empty, some are default, nothing is set in stone so change and set them the way you see fit.



Also, in answer to your previous query about the conferees still ringing after the originator hangs up, add the “endconf” flag to your conference kick-off string:


<action application="conference" data="myconf at default++flags{endconf|moderator|nomoh}"/>


myconf – the “name” of the conference as FreeSWITCH knows it, can be pretty much anything readable, numbers, letters, literal value, variable replacement, etc.


default – the conference profile to use as configured in autoload_configs/conference.conf.xml


moderator flag – pulls in a different set of controls as specified in the config file mentioned above.


Hope this helps.





From: Michael Nielsen
Sent: Tuesday, 12 January, 2016 04:27
Subject: Re: [Freeswitch-users] Dial multiple users for "conference" call


Hi Larry,


As you can see from my example, I am trying to set that exact variable:

<action application="set" data="conference_auto_outcall_caller_id_number=${effective_caller_id_number}"/>

But I want to set it from the effective_caller_id_number, so I can get the caller ID from the person who initiated the conference call.


On Mon, Jan 11, 2016 at 7:50 PM, Larry Morley <lmorley at neny.cslimits.net> wrote:


Go back and have another look at the "mad boss" example. The variable you likely want to set in this instance is "conference_auto_outcall_caller_id_number".

Basically, what Mike J was telling you is that not all variables are salient; are set by FreeSwitch; have any meaning whatsoever; in the context of certain parts of a given FreeSwitch configuration.

>From the "mad boss" example:

<!--These params effect the outcalls made once you join-->

        <action application="set" data="conference_auto_outcall_caller_id_name=Mad Boss"/>

        <action application="set" data="conference_auto_outcall_caller_id_number=0911"/>

Hope that helps, 

On Jan 11, 2016 9:02 AM, "Michael Nielsen" <mic.niel84 at gmail.com> wrote:



On Mon, Jan 11, 2016 at 3:00 PM, Michael Nielsen <mic.niel84 at gmail.com> wrote:

In other dial plans I'm able to use ${effective_caller_id_number} from my directory.

That means, if my subscriber 1001 are calling I can use 1001 as caller ID, so my called parties know who it is.


On Mon, Jan 11, 2016 at 2:58 PM, Michael Jerris <mike at jerris.com> wrote:

On Monday, January 11, 2016, Michael Nielsen <mic.niel84 at gmail.com> wrote:

Seems as if it has nothing to do with multiple parties speaking together, just simultaneously calling them.


Back to mod_conferece and the madboss example. It seems to work, but not getting the variable from the caller:


1) If I call some numbers, and hang up before the 60 seconds timeout - the numbers keeps ringing for 60 seconds, even though I as initiator have hung up.

2) <action application="set" data="conference_auto_outcall_caller_id_number=${effective_caller_id_number}"/> doesn't seems to be acknowledge, it shows Unknown number.


What do you think effective_caller_id_number is here?  this is not a variable that is automatically set  




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