| LS | Title | From | To | Approval date |
| SG15-LS210 | LS/r to TSAG on proposed ITU-T Focus Group on Quantum Information Technology for Networks (FG-QIT4N) (reply toTSAG-LS19 -E ) | SG15 | TSAG; | 2019-07-12 |
| SG5-LS95 | LS/r on proposed ITU-T Focus Group on Quantum Information Technology for Networks (FG-QIT4N) (reply to TSAG-LS19) | SG5 | TSAG; | 2019-05-22 |
| SG3-LS64 | LS/r on proposed ITU-T Focus Group on Quantum Information Technology for Networks (FG-QIT4N) (reply to TSAG-LS19) | SG3 | TSAG; | 2019-05-02 |
| SG20-LS126 | LS/r on proposed ITU-T Focus Group on Quantum Information Technology for Networks (FG-QIT4N) (reply to TSAG-LS19 -E) | SG20 | TSAG; | 2019-04-18 |
| SG16-LS124 | LS/r on proposed ITU-T Focus Group on Quantum Information Technology for Networks (FG-QIT4N) (TSAG-LS19) [to TSAG] | SG16 | TSAG; | 2019-03-29 |
| SG13-LS107 | LS/r on proposed ITU-T Focus Group on Quantum Information Technology for Networks (FG-QIT4N) (reply to TSAG-LS19) [from ITU-T SG13] | SG13 | TSAG; | 2019-03-14 |
| TSAG-LS19 | LS on proposed ITU-T Focus Group on Quantum Information Technology for Networks (FG-QIT4N) [to ITU-T SGs 2, 3, 5, 9, 11, 12, 13, 15, 16, 17, 20] | TSAG | SG2; SG3; SG5; SG9; SG11; SG12; SG13; SG15; SG16; SG17; SG20; | 2019-01-21 |