Summary

This model replaced the older VMG1312-B10D in November 2020.
The ZyXEL VMG1312 (VMG1312-T20D) is a basic all-in-one ADSL/VDSL router with WiFi and 4 100M network ports. AAISP started supplying these in November 2020.
Quick Start guide: File:VMG1312-T20B Quick Start.pdf

Basic Specs:

4x 10/100M ports. (not gigabit Ethernet)
Modem supports VDSL (FTTC) and ADSL/ADSL2.
No Ethernet WAN port
WiFi is 2.4 GHz, 802.11 b/g/n
MTU 1500 when in bridge mode not possible.

Suitable for

ADSL1
ADSL2
VDSL (aka FTTC)

Bridge or Router

The VMG1312-T20B can be set up as a router or as a bridge if you have your own PPPoE router. When in bridge mode, the router’s "Login Password" is as printed on the Zyxel information on the router and not the one specified by A&A.

Not suitable for

FTTP
G.FAST
Plugging in to a modem (there is no Ethernet WAN port)

Security Advisories

ZyXEL have a page with their Security Advisories: https://www.zyxel.com/support/security_advisories.shtml

'Consumer' grade

It's worth noting that this is a consumer grade router which is ideal for home use or for small offices. Different or additional hardware may be more suitable for larger or more complex networks, larger offices or to cover a larger area with WiFi access.

Admin and WiFi passwords

We ship the router with a basic configuration that is just enough to get the router to log in to us and fetch its full configuration for your line. There are settings on the control panel that can set the SSID, passwords etc, but until the router has been sent its full configuration it is in an 'unconfigured' state.

	As shipped / unconfigured	When in bridge mode	Once configured
IP:	192.168.1.1		192.168.1.1 or your public block
Username:	admin
Password:	as stated on the ZyXEL rear panel	Contact Support	as printed on the A&A card
WiFi Password:	as stated on the rear panel	WiFi is disabled	the one printed on the A&A card

Misc

Reset

To reset the settings: hold in the reset button with a paperclip for 6 seconds, release the reset button when the power LED goes red.

Zyxel's quick start guide:

File:ZyXEL-T20B-QuickStart.pdf