5.3 Upper Tester (UT)

34.229-33GPPInternet Protocol (IP) multimedia call control protocol based on Session Initiation Protocol (SIP) and Session Description Protocol (SDP)Part 3: Abstract test suite (ATS)Release 17TSUser Equipment (UE) conformance specification

Tools: ARFCN - Frequency Conversion for 5G NR/LTE/UMTS/GSM

The upper tester interface is the same as defined in TS 36.523-3 [30] clause 5 for E-UTRA or TS 34.123-3 [4] clause 6A.4 for UTRAN or TS 38.523-3 [54] clause 6.1 for NR5GC, with additional, IMS-specific AT commands as specified in clause 8.4 and IMS-specific MMI commands as specified in annex B.2.