you’re quite a spammer ! 🙂
i have the training document in fron of me, and it specifies all the GMM states (Ready/StdBy/Idle) but it doesn’t mention the RR states (PIM/PTM).
So here are the possible combinations:
READY – PTM : MS has a TBF
READY – PIM : TBF has been released but T_READY is not yet expired
STD-BY – PIM : MS is GPRS-ATTACHED but no ongoing TBF
IDLE – PIM : MS is not GPRS-ATTACH (therefore, no TBF)
… as far as i know.