The ZyXEL VMG3925-B10B (VMG3925 for short) is the elder sibling of the VMG1312 - it benefits from having Gigabit Ethernet ports and dual-band WiFi, you can see more differences on the VMG1312 Vs VMG3925 page

Quick Start

Guide with how to plug in and what the LEDs mean

Further Documents

Manuals and other documentation for the router

Settings & Configuration

Information about how A&A configure the router and what settings are available to customers

Software

Software information and downloads

Summary

The ZyXEL B10B (VMG3925-B10B) is an all-in-one ADSL/VDSL router with dual band, 2.4G and 5G WiFi, 4 Gigabit network ports and a separate WAN Ethernet port. AAISP started supplying these in April 2018

ZyXEL VMG3925-B10B

Stand, can also be wall mounted

Diagram of the rear

Diagram of the front

File:VMG3925 B10B Quick Start.pdf

The insides!

Basic Specs:

• 4x 10/100M/1000M ports.
• Modem supports VDSL (FTTC) and ADSL/ADSL2.
• WiFi is 2.4GHz and 5Ghz, 802.11b/g/n, 802.11a/n/ac
• MTU 1500 when in bridge mode not possible yet, but we are working with ZyXEL on this. (2018-03)

Suitable for:

• ADSL1
• ADSL2
• VDSL (FTTC)
• VDSL (FTTC) as an Ethernet router plugged in to a VDSL modem (no longer a common setup, as Openreach no longer provide VDSL modems)
• VDSL (FTTC) or ADSL as a bridging modem to a third-party PPPoE router (e.g. FireBrick).
• FTTP using the Ethernet WAN port doing PPPoE.

Factory Default Admin Username/Password

Note: An AAISP configured router will have a different username and password.

Supervisor password:

The B10B has an autogenerated supervisor password (hashed from the serial number). Earlier models left a md5crypt type hash in /etc/passwd, however firmware AAVF.10 introduced these being stored in /etc/shadow. You may have some success reading this file by logging into the router as the "admin" user via SSH. You will need to crack the hash (eg with hashcat), the password will be 8 characters long using characters 0-9,a-f (lower case)