| LS | Title | From | To | Approval date |
| SG17-LS261 | LS/r on ongoing ITU-T Q2/17 and Q6/17 works on security aspects for the software-defined networking (reply to COM 13 – LS 132) | SG17 | SG13; | 2016-03-23 |
| SG13-LS132 | LS/r about ongoing ITU-T Q2/17 and Q6/17 work on security aspects for the software-defined networking (reply to SG17-LS189) | SG13 | SG17; | 2015-12-11 |
| SG5-LS137 | LS/r on SDN standardization activity roadmap (reply to JCA-SDN-LS4-E) | SG5 | JCA-SDN; | 2015-10-23 |
| SG17-LS235 | LS/r about ongoing ITU-T Q2/17 and Q6/17 works on security aspects for the software-defined networking (response to COM13-LS100) | SG17 | SG13; | 2015-09-17 |
| SG13-LS100 | Security aspects for SDN | SG13 | SG17; | 2015-05-01 |
| SG11-LS67 | LS/r on SDN standardization activity roadmap (reply to JCA-SDN - LS 4 -E) | SG11 | JCA-SDN; | 2015-04-29 |
| SG17-LS189 | LS/r about ongoing ITU-T Q2/17 and Q6/17 work on security aspects for the software-defined networking (reply to JCA-SDN LS 4) | SG17 | SG13; JCA-SDN; | 2015-04-17 |
| SG2-LS80 | LS/r on SDN standardization activity roadmap (reply to JCA-SDN-LS004) | SG2 | 3GPP; JCA-SDN; | 2015-03-27 |
| SG3-LS33 | LS/r on SDN standardization activity roadmap (reply to JCA-SDN - LS 4 -E) | SG3 | JCA-SDN; | 2015-03-20 |
| JCA-SDN-LS4 | LS on SDN standardization activity roadmap | JCA-SDN | SG2; SG3; SG5; SG9; SG11; SG12; SG13; SG15; SG16; SG17; TSAG; | 2014-11-13 |
