Transfer with abnormal behavior
I have a system with freepbx that does a strange thing about transfers: “Call Forward All Activate * 72”
In practice, if an extension calls the extension that is being transferred, everything works but if the call comes from an external trunk, the transfer takes place but the communication is not heard.
The switchboard is in the cloud and between the cloud and the customer network there is a vpn, NAT problems I never had …
But above all, according to the client, the problem is not present on all extension but only on some