Section: 4.7.4.1.3 MS initiated combined GPRS detach procedure completion
Content: When the DETACH REQUEST message is received by the network, a DETACH ACCEPT message shall be sent to the MS, if the detach type IE value indicates that the detach request has not been sent due to switching off. Depending on the value of the detach type IE the following applies: GPRS/IMSI detach: The MS is marked as inactive in the network for GPRS and for non-GPRS services. The network and the MS shall deactivate the PDP contexts, the MBMS contexts and deactivate the logical link(s), if any. The States GMM-DEREGISTERED and MM NULL are entered in both the MS and the network. In Iu mode, if the detach has been sent due to switching off, then the network shall release the resources in the lower layers for this MS (see 3GPP TS 25.331[ None ]  [23c]). IMSI detach: The MS is marked as inactive in the network for non-GPRS services. State MM NULL is entered in the MS and the network.