FreePBX sends sip Ringing to early


i read all network traffic on my FreePBX using tcpdump and i noticed the following:

After the PBX recieves an “Invite message” (the called sip-phone is online) it immediately sends two messages back to the caller, Trying and Ringing.

So now i ask, why is it sending back a ringing before it got a ringing from the called phone?

Until now i found out that this is maybe due to Asterisk doing inband-progress
i added “progressinband=no” or “progressinband=never” to sip_general_custom.conf but the problem remains

is there any setting in the gui for this?

Try removing the r option from Asterisk Dial Options for the called extension.

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