Section: 4.10 Support of MUSIM features
Content: A network and a MUSIM UE may support one or more of the MUSIM features (i.e. the NAS signalling connection release, the paging indication for voice services, the reject paging request, the paging restriction and the paging timing collision control). If MUSIM UE supports one or more MUSIM features, the UE indicates support of one or more MUSIM features during the attach procedure and the normal tracking area updating procedure. If the UE has indicated support of the NAS signalling connection release or the reject paging request or both and the UE supports the paging restriction, the UE indicates support of the paging restriction. If the UE indicates support of one or more MUSIM features and the network decides to accept one or more MUSIM features, the network indicates the support of one or more MUSIM features during the attach procedure and the normal tracking area updating procedure. The network only indicates the support of the paging restriction together with the support of either NAS signalling connection release or the reject paging request. The network does not indicate support for any MUSIM feature to the UE during the attach for emergency bearer services. If a UE stops fulfilling the condition to be considered a MUSIM UE as defined in subclause 3.1, and the UE has negotiated support of one or more MUSIM features, then the UE shall initiate a normal tracking area update procedure to indicate that all the MUSIM features are not supported as specified in clause 5.5.3.2. A MUSIM UE operating in NB-S1 mode or in WB-S1 mode CE mode B does not indicate the support for paging indication for voice services during the attach procedure or the normal tracking area update procedure towards the network.