Annex M is a variation of ADSL2 and ADSL2+ which increases the maximum Upload bandwidth from 1Mbps to 3Mbps.
Install the latest firmware from our web site to enable Annex-M support in the Vigor2800 router.
Use firmware version with the modem code prefix starting with E. For example modem code: E.38.2.23.
Select “ADSL2 annex M” or “ADSL2+ annex M” from the Modulation drop-down on the Internet Access>>PPPoE/PPPoA menu page.