Just got this from Draytek: As you may be aware, NBN Co will be implementing a SOS (Save our Showtime) and ROC (Robust Overhead Channel) upgrade of VDSL2 (FTTN/FTTB) services (SOS/ROC Upgrade). The purpose of the upgrade is to prevent dropouts due to sudden large noise bursts, thereby improving service stability. The SOS/ROC Upgrade was expected to commence on 1 July 2021 but now has been pushed back to 31 January 2022. Later model VDSL2 routers such as the Vigor2765 and Vigor2865 series routers fully support the new NBN requirements but will need to be enabled manually via a telnet command. Older model routers such as the Vigor2760, Vigor2860 series and Vigor130 will require firmware updates to support this new requirement. The Vigor2762 and Vigor 2862 will provide a stable VDSL2 connection with the current firmware but DrayTek will also be working on providing updated firmware for these models. DrayTek routers affected by this change should continue to operate normally until then. We will keep you updated in the coming months with new developments as they become available.