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| LS | Title | From | To | Approval date |
| SG20-LS40 | LS/r on response to ITU-T SG2 (reply to SG2 LS3, SG2 LS25 and SG2 LS6) | SG20 | SG2; | 2017-09-15 |
| SG2-LS25 | LS to SG20 regarding SG2 work on certain aspects of IoT naming, numbering and identification | SG2 | SG20; TSAG; | 2017-07-24 |
| SG15-LS36 | LS/r on “Telecommunication Management and OAM Project Plan” (reply to SG2-LS142 and SG2-LS5) | SG15 | SG2; | 2017-06-30 |
| SG9-LS18 | LS/r on ITU-T study group responsibilities in WTSA Resolution 67 (Rev. Dubai, 2012) – Terms and Definitions harmonization (SG2-LS142) [to ITU-SG2] | SG9 | SG2; | 2017-05-31 |
| SG2-LS3 | LS/r on response to ITU-T SG20 [reply to SG20 - LS23] | SG2 | SG20; TSAG; | 2017-04-07 |
| SG2-LS5 | LS on Telecommunication Management and OAM Project Plan | SG2 | SG3; SG5; SG9; SG11; SG12; SG13; SG15; SG16; SG17; SG20; TSAG; | 2017-04-07 |
| SG2-LS6 | LS/r on IoT management collaboration request [reply to SG20 - LS22 and SG20 - LS24] | SG2 | TSAG; SG20; | 2017-04-07 |
| SG2-LS24 | LS/r on ITU-T study group responsibilities in WTSA Resolution 67 (Rev. Dubai, 2012) - Terms and Definitions harmonization [reply to SG5 - LS 174] | SG2 | SG5; | 2017-04-07 |
| SG20-LS22 | LS/r on Telecommunication Management and OAM Project Plan (reply to SG2 - LS 155 -E) | SG20 | SG2; | 2017-03-22 |
| SG20-LS23 | LS/r on “Internet of things identification” (reply to SG2 - LS 1 -E, SG2 - LS 153 -E, and SG2 - LS 152 -E) | SG20 | SG2; SG11; SG16; | 2017-03-22 |
| SG20-LS24 | LS/r on Response on Terms and Definitions harmonization request (reply to SG2 - LS 142 -E) | SG20 | SG2; | 2017-03-22 |
| SG2-LS1 | LS on NNAI for IoT | SG2 | SG20; | 2017-02-17 |
| SG5-LS174 | LS/r on ITU-T study group responsibilities in WTSA Resolution 67 (Rev. Dubai, 2012) - Terms and Definitions harmonization (reply to SG2 - LS 142 -E) | SG5 | SG2; | 2016-10-14 |
| SG2-LS142 | LS on ITU-T study group responsibilities in WTSA Resolution 67 (Rev. Dubai, 2012) – Terms and Definitions harmonization | SG2 | SG3; SG5; SG9; SG11; SG12; SG13; SG15; SG16; SG17; ITU-R CCV; SCV; SG20; | 2016-09-23 |
| SG2-LS152 | LS on SG2 work on NNAI for IoT | SG2 | SG20; | 2016-09-23 |
| SG2-LS153 | LS/r on NNAI aspects of Internet of Things (IoT) and Smart Cities and Communities (SC&C) (reply to COM 20 – LS 48) | SG2 | SG20; SG11; SG17; | 2016-09-23 |
| SG2-LS155 | LS on Telecommunication Management and OAM Project Plan | SG2 | SG3; SG5; SG9; SG11; SG12; SG13; SG15; SG16; SG17; SG20; | 2016-09-23 |
| SG20-LS48 | LS/r on NNAI aspects of Internet of Things (IoT) and Smart Cities and Communities (SC&C) (reply to SG2 - LS 138 -E and SG2 - LS 125 -E) | SG20 | SG2; | 2016-08-05 |
| SG2-LS138 | LS/r on NNAI aspects of Internet of Things (IoT) and Smart Cities and Communities (SC&C) (reply to ITU-T SG20 COM 20 – LS 25) | SG2 | SG20; | 2016-05-27 |
| SG2-LS125 | LS on SG2 work on Numbering Naming Addressing and Identification | SG2 | SG20; | 2016-01-29 |
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