Section: 4.2.3 Service state when back to state MM IDLE from another state
Content: When returning to MM IDLE, e.g., after a location updating procedure, the mobile station selects the cell as specified in 3GPP TS 43.022[ None ]  [82] and 3GPP TS 25.304[ None ]  [98]. With one exception, this is a normal cell selection. An eCall only mobile station (as determined by information configured in USIM), shall start timer T3242 if the return to MM IDLE state is the result of an emergency services call and shall start timer T3243 if the return to MM IDLE state is the result of a call to a non-emergency MSISDN for test and terminal reconfiguration services, as described in subclause 4.4.7. If this return to idle state is not subsequent to a location updating procedure terminated with reception of cause "Roaming not allowed in this location area", the service state depends on the result of the cell selection procedure, on the update status of the mobile station, on the location data stored in the mobile station and on the presence of the SIM/USIM: - if no cell has been found, the state is NO CELL AVAILABLE, until a cell is found; - if no SIM/USIM is present, or if the inserted SIM/USIM is considered invalid by the MS, the state is NO IMSI; - for an eCall only mobile station (as determined by information configured in USIM), if timer T3242 or timer T3243 has expired and service state PLMN SEARCH is not required, the state is eCALL INACTIVE and the eCall inactivity procedure is performed as described in subclause 4.4.7; - if the selected cell is in the location area where the MS is registered, then the state is NORMAL SERVICE; it shall be noted that this also includes an abnormal case described in subclause 4.4.4.9; - (Only applicable for mobile stations supporting VGCS listening or VBS listening.) if the mobile stations was in the service state RECEIVING GROUP CALL (NORMAL SERVICE) or RECEIVING GROUP CALL (LIMITED SERVICE) before the location updating procedure and the selected cell is in the location area where the mobile station is registered, then the state is RECEIVING GROUP CALL (NORMAL SERVICE); - if the selected cell is in a location area where the mobile station is not registered but in which the MS is allowed to attempt a location update, then the state is LOCATION UPDATE NEEDED; - if the selected cell is in a location area where the mobile station is not allowed to attempt a location update, then the state is LIMITED SERVICE; - if the selected cell is a CSG cell whose CSG ID and associated PLMN identity are not in the Allowed CSG list or in the Operator CSG list stored in the MS, then the state is LIMITED SERVICE; - (Only applicable for MSs supporting VGCS listening or VBS listening.) if the MSs was in the service state RECEIVING GROUP CALL (NORMAL SERVICE) or RECEIVING GROUP CALL (LIMITED SERVICE) before the location updating procedure and the selected cell is in the location area where the MS is not allowed to attempt a location update, then the state is RECEIVING GROUP CALL (LIMITED SERVICE); - after some abnormal cases occurring during an unsuccessful location updating procedure, as described in subclause 4.4.4.9, the state is ATTEMPTING TO UPDATE. In case of a return from a location updating procedure to which was answered "Roaming not allowed in this location area", the service state PLMN SEARCH is entered as specified in subclause 4.2.1.2.