| LS | Title | From | To | Approval date |
| SG9-LS46 | LS/r on updated reference table of ITU-T Recommendations to be used for conformity and interoperability testing (SG11-LS32) [to ITU-T SG11] | SG9 | SG11; | 2018-01-30 |
| SG11-LS32 | LS on updated reference table of ITU-T Recommendations to be used for conformity and interoperability testing | SG11 | SG2; SG3; SG5; SG9; SG12; SG13; SG15; SG16; SG17; SG20; | 2017-11-17 |
| SG16-LS45 | LS/r on Implementation of ITU C&I Programme (SG11-LS6) [to ITU-T SG11] | SG16 | SG11; | 2017-10-27 |
| SG15-LS25 | LS on Conformance and Interoperability Testing (CIT) activities for WP1/15 Recommendations | SG15 | SG11; | 2017-06-30 |
| SG16-LS35 | LS/r on implementation of C&I programme (SG11-LS6) [to ITU-T SG11] | SG16 | SG11; | 2017-05-12 |
| SG11-LS6 | LS on Implementation of ITU C&I Programme | SG11 | SG2; SG3; SG5; SG9; SG12; SG13; SG15; SG16; SG17; SG20; | 2017-02-15 |
