ETSI TS 138 508-1-2020 5G; 5GS; User Equipment (UE) conformance specification; Part 1: Common test environment (V16.5.1; 3GPP TS 38.508-1 version 16.5.1 Release 16)
2021ETSI TS 138 508-1-2021 5G; 5GS; User Equipment (UE) conformance specification; Part 1: Common test environment (V16.7.0; 3GPP TS 38.508-1 version 16.7.0 Release 16)
2020ETSI TS 138 508-1-2020 5G; 5GS; User Equipment (UE) conformance specification; Part 1: Common test environment (V16.5.1; 3GPP TS 38.508-1 version 16.5.1 Release 16)