ForewordIntroduction1 Scope2 References3 Definitions of terms, symbols and abbreviations4 Interfaces5 Test setup6 RTP Payload Format Conformance for AMR7 RTP Payload Format Conformance for AMR-WB8 RTP Payload Format Conformance for EVS 4 Interfaces 26.1303GPPRelease 18Speech/Audio Codec RTP Payload Format Conformance for UE TestingTS Tools: ARFCN - Frequency Conversion for 5G NR/LTE/UMTS/GSM 4.1 [Interface 1] tbd 4.2 [Interface 2] Tbd