Direct SIP IP Call


I have a touchscreen tablet with a Priority application using the SIP agent.

An intercom communicates with it using “Direct IP SIP call”.
I would like the intercom call to be sent to 2 other tablets simultaneously.

Tablets cannot have a CID, only Direct SIP in “X@IPaddress” format

The idea was to use FreePBX on rasberryPi for just one rule.

Create a personalized Direct SIP extension, make it a group and ask the intercom to call this group.

But nothing works.

I tried custom extensions, custom destinations, trunks and SIP aliases but it was not conclusive.

The intercom may have a CID.

Thank you for your response

Sorry if it’s not clear, I used Google translate to make this text

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