Section: 4.3.3.4 Abnormal cases on the network side
Content: The following abnormal cases can be identified: a) RR connection failure: Upon detection of a RR connection failure before the IDENTITY RESPONSE message is received, the network shall release all MM connections (if any) and abort any ongoing MM specific procedure. b) Expiry of timer T3270: The identification procedure is supervised by the network by the timer T3270. At expiry of the timer T3270 the network may release the RR connection. In this case, the network shall abort the identification procedure and any ongoing MM specific procedure, release all MM connections if any, and initiate the RR connection release procedure as described in 3GPP TS 44.018[ None ]  [84] subclause 3.5, 3GPP TS 25.331[ None ]  [23c] (UTRAN Iu mode only), or in 3GPP TS 44.118[ None ]  [111] (GERAN Iu mode only). Figure 4.3/3GPP TS 24.008[ Mobile radio interface Layer 3 specification; Core network protocols; Stage 3 ] : Identification sequence