U.2.2.1A Modification of the PDU session of the 5GS QoS flow used for SIP signalling Word-p. 938
U.2.2.1B Re-establishment of the PDU session with the 5GS QoS flow used for SIP signalling
U.2.2.1C P-CSCF restoration procedure Word-p. 939
U.2.2.2 Session management procedures Word-p. 940
U.2.2.3 Mobility management procedures
U.2.2.4 Cell selection and lack of coverage
U.2.2.5 5GS QoS flow for media
U.2.2.5.1C Deactivation of a QoS flow for media Word-p. 941
U.2.2.5.1D Default QoS flow usage restriction policy
U.2.2.5.2 Special requirements applying to forked responses
U.2.2.5.3 Unsuccessful situations Word-p. 942
U.2.2.6.4 Emergency services in single-registration mode
U.2.2.6.5 Emergency services in dual registration mode Word-p. 949
U.3.1.1 P-Access-Network-Info header field Word-p. 953
U.3.1.1A Cellular-Network-Info header field
U.3.1.2 Availability for calls
U.3.1.2A Availability for SMS Word-p. 955
U.3.1.3 Authorization header field Word-p. 956
U.3.1.4 SIP handling at the terminating UE when precondition is not supported in the received INVITE request, the terminating UE does not have resources available and IP-CAN performs network-initiated resource reservation for the terminating UE
U.3.1.5 3GPP PS data off
U.3.1.6 RLOS [R16] Word-p. 958
U.3.1.7 SIP handling at the originating UE when redirecting the UE from NG-RAN to E-UTRAN fails [R16]
U.3.1.8 Unified Access Control [R16]
