| LS | Title | From | To | Approval date |
| OpenROADM MSA-LS5 | LS/i/r on update on B400G project (reply to SG15-LS54) | OpenROADM MSA | SG15; | 2023-06-22 |
| SG15-LS54 | LS/r on 800 Gbit/s FlexO (reply to OpenROADM MSA-LS4, OIF-LS54) | SG15 | OIF; OpenROADM MSA; | 2023-04-28 |
| OpenROADM MSA-LS4 | LS/r on OpenROADM (reply to SG15-LS40) | OpenROADM MSA | SG15; | 2023-04-07 |
| SG15-LS40 | Liaison Statement to OIF and OpenROADM | SG15 | OpenROADM MSA; OIF; | 2023-02-17 |
| OIF-LS54 | LS/r on 800ZR IA project update (reply to SG15-LS20) | OIF | SG15; | 2022-11-10 |
| SG15-LS20 | Liaison to OIF and OpenROADM | SG15 | OIF; OpenROADM MSA; | 2022-09-30 |
