Control of clients in the conference

Is it possible to set up control of clients in the conference using FreePBX? I mean auto-return users to the conference after disconnection?

More information is required to answer your question. Do you mean when the caller calls back into the conference line, they redirect to the correct conference?

Sangoma has a module:
Conference Pro | FreePBX - Let Freedom Ring
Conference Pro - PBX GUI - Documentation (

This would allow an extension (employee) to add people to a conference bridge by entering their phone number on the webpage they log into.

There is also a callback module you may be able to leverage, but you would likely need to do something custom.
Callback Module User Guide - PBX GUI - Documentation (

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Thx for answer.
For example, a conference is holding now. There are n subscribers in it. One of the subscribers has a disconnection (the satellite wobbled, the child pulled the cord, etc.). Can Asterisk make a call and invite the subscriber back to the conference? If yes, what module do asterisk need?

Doable with a custom dialplan. However, how would you differentiate between accidental and intentional disconnections?

no way, I think. The fact is, that subscribers must constantly be in this conference. Any shutdown (other than authorized by the administrator) is not allowed

What if the participant needs to call the emergency services?

You need to make something custom to accomplish your goal, but there are still too many unknown variables to give you anything more than basic direction.

One approach could be to write a script using AMI to monitor the conference(s). When you see a user disconnect, originate a call to that user with whatever actions you would like taken.

Asterisk Manager Interface (AMI) - Asterisk Project - Asterisk Project Wiki

ConfBridge AMI Events - Asterisk Project - Asterisk Project Wiki
ConfBridge AMI Actions - Asterisk Project - Asterisk Project Wiki
Asterisk 11 ManagerAction_Originate - Asterisk Project - Asterisk Project Wiki

There are other ways to approach this as well, this is just one idea.

This conference used in army telephony, in closed network. There are other ways to call ES or etc if needed

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