Make incoming SIP call moderator or start conference without any other participants

Hey guys.

We have jitsi instance working jigasi for inbound and outbound calling. Now we are wondering that can we somehow make incoming SIP calls as a moderator and starts conference bridge?

Because right now if we get an inbound call on default bridge siptest, we need to start a conference session from the browser for siptest room, only then jitsi accepts the incoming call.

We want that any incoming call for any conference room name should start and initiate conference bridge without a moderator.

Any help and ideas will be highly appreciated.

I would also like to know if this is possible. We have integrated an external conference bridge, and once a moderator dials in to the main conference, we dial out to the Jitsi room and need that call to trigger the room to open for other participants.