Trying to send a user's call to their cellphone can be problematic, especially when their phone is off, bad signal, etc... I know some carriers send q931 messages back when a call is redirected (sometimes), but not all do.
Is it possible to make a determination in OpenSER (if we know we're sending to a cell phone) that the call was picked up too quickly? That's really the ugly problem. If I could say, "Oh yeah, you're cellphone picked up in less than 1 second, a real person probably didn't do that." and drop that fork, that would be awesome.
--Chris