| LS | Title | From | To | Approval date |
| SG12 - LS 21 | LSOR on Technical Paper - How to increase QoS/QoE of IP-based platform(s) to regionally agreed standards to ITU-T SG13 (COM 13 – LS 2) | SG12 | SG13; APT ASTAP; | 2013-03-28 |
| COM 13 - LS 2 | Reply Liaison Statement to ASTAP NGN EG on cooperation between ITU-T SGs on Bali Plan of Action | SG13 | APT ASTAP; SG12; | 2013-03-01 |
| APT - LS 4 | Liaison Statement to ITU-T on Cooperation between ITU-T STUGs and ASTAP EG NGN on Bali Plan of Action | APT | SG12; SG13; | 2012-10-10 |