I currently am using a ZyXEL VMG1312-B10D as the CPE for a G.992.3 (ADSL2) configured circuit.
During some reading of other ZyXEL documentation (not related to the VMG1312-B10D), I discovered something . . .
From a web-browser, enter the following into the address bar --
IPv4_address_of_ZyXEL_device/deviceInfo.pageNote that the string
deviceInfo.page is all in lower-case, apart from the
I (of
Info).
Is anything now displayed?