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

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!

Summary

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

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
• Broadcom 63168 chipset
• 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), G.Fast (Modem doesn't support G.Fast, so you'd need a separate G.Fast modem)
• FTTP, FTTPoD

Router and Modem modes:

• an all in one modem/router/wifi
• an Ethernet (PPPoE) router plugged in to a separate VDSL or ADSL modem or a FTTP or FTTPoD ONT
• a bridging modem to a third-party PPPoE router (e.g. FireBrick, Mikrotik etc)

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 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.

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 changed to a SHA-512 type hash stored in /etc/shadow. Prior to firmware AAVF.10 you will be able to read /etc/passwd by logging into the router as the "admin" user via SSH or Telnet. With firmware AAVF.10 and later you would have to log in as the supervisor user - but you'd need to know the password.... You would need to crack the hash (e.g. with hashcat), the password will be 8 characters long using characters 0-9,a-f (lower case)