I want to achieve the following behavior: When someone calls our main number, extension 1 should start ringing. If no one picks up the call immediately, after some delay (lets say 10 seconds) extension 2 should also start ringing AND the first one should continue to ring. From there on, both extensions should continue to ring indefinitely until either someone answers the call or the caller hangs up. Seems pretty basic, but I couldn't get it to work. With a ring group and the setting "prioritized hunt", the first extension stops ringing as soon as the second one starts. Not ideal. Furthermore, after a far to short total ring time of 20 seconds, the call will be either ended or forwarded somewhere else (depending on what you set for "Destination if no answer" in the ring group). Also not good. Another idea that came to mind was to create a dummy extension, put it in a ring group together with extension 1, set the ring group to "ring all" and let the dummy extension forward it's call to extension 2 after after a 10 second timeout. However, of course the dummy extension has no phone registered to it, which means it counts as unregistered and therefore timeout settings won't apply.