| LS | Title | From | To | Approval date |
| IETF ippm WG-LS3 | LS/r on harmonization of IP Capacity and Latency Parameters: Consent of Draft Rec. Y.1540 on IP packet transfer performance parameters and New Annex A with Lab & Field Evaluation Plans | IETF ippm WG | SG12; BROADBAND FORUM; ETSI TC STQ; SG9; SG11; SG15; | 2021-05-21 |
| ETSI TC STQ-(19)061050r1 | LS on current status of the draft Recommendation ITU-T Q.3961, and on Approval of Revised TS 103 222-2 (reply to SG11 LS80) | ETSI TC STQ | BROADBAND FORUM; ETSI TC INT; IETF ippm WG; SG11; SG12; | 2019-07-12 |
| ETSI TC STQ-(19)061049 | LS/r on harmonization of IP Capacity and Latency Parameters, and on Approval of Revised TS 103 222-2 (reply to SG12 LS92) | ETSI TC STQ | BROADBAND FORUM; ETSI TC INT; IETF ippm WG; SG11; SG12; | 2019-07-12 |
| BROADBAND FORUM-LS140 | LS/r to Liaison harmonization of IP Capacity and Latency Parameters: Consent of Draft Rec. Y.1540 and LS/r on Quality Experience Delivered (Broadband QED) project | BROADBAND FORUM | Q17/12; | 2019-06-20 |
| SG12-LS92 | LS on harmonization of IP Capacity and Latency Parameters: Consent of Draft Rec. Y.1540 on IP packet transfer performance parameters and New Annex A with Lab & Field Evaluation Plans | SG12 | BROADBAND FORUM; ETSI TC INT; ETSI TC STQ; IETF ippm WG; SG11; TSAG; | 2019-05-16 |
| SG12-LS93 | LS/r on current status of the draft Recommendation ITU-T Q.3961 (reply to SG11-LS80) | SG12 | BROADBAND FORUM; ETSI TC INT; ETSI TB STQ; IETF ippm WG; SG11; TSAG; | 2019-05-16 |
| SG11-LS80 | LS/r on current status of the draft Recommendation ITU-T Q.3961 (reply to SG12-LS59) | SG11 | SG12; BROADBAND FORUM; ETSI TC INT; ETSI TC STQ; IETF ippm WG; TSAG; BEREC; | 2019-03-15 |
| SG12-LS59 | LS/r on current status of the draft Recommendation ITU-T Q.3961 (reply to SG11-LS52) | SG12 | ETSI TC INT; SG11; TSAG; BROADBAND FORUM; ETSI TC STQ; IETF ippm WG; | 2018-10-17 |
| SG11-LS52 | LS/r on current status of the draft Recommendation ITU-T Q.3961 (reply to SG12-LS57) | SG11 | SG12; ETSI TC INT; ETSI TC STQ; TSAG; | 2018-07-27 |
| SG12-LS57 | LS/r on current status of the draft Recommendation ITU-T Q.3961 (reply to SG11-LS31) | SG12 | ETSI TC INT; SG11; TSAG; ETSI TC STQ; IETF ippm WG; | 2018-05-10 |
| SG11-LS31 | LS/r on current status of the draft Recommendation ITU-T Q.3961 (reply to SG12-LS35) | SG11 | SG12; TSAG; | 2017-11-17 |
| SG12-LS35 | LS/r on current status of the draft Recommendation ITU-T Q.3961 (reply to SG11-LS16) | SG12 | SG11; TSAG; | 2017-09-28 |
| SG11-LS16 | LS on current status of the draft Recommendation ITU-T Q.3961 | SG11 | SG12; | 2017-06-14 |
