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The Zyxel VMG3625-T20A Dual-Band Wireless AC/N Combo WAN Gigabit Gateway with USB is an advanced VDSL2 gateway that provides autosensing between VDSL2 and ADSL2+ for high-speed Internet access. In addition, with supports to G.vectoring, it increases speed and coverage to compete with other broadband technologies without infrastructural change.

The Zyxel VMG3625-T20A integrates an IEEE 802.11 a/b/g/n/ac access point and a Gigabit Ethernet switch for LAN access. With extreme routing performance, it acts as a concentrator or a power hub to distribute all contents among different devices inside the LAN with both wireless and wired connectivity. The Wi-Fi functionality has also been enhanced to ensure high-quality user experience.

Additionally, it comes with the multiple-WAN function suitable for future FTTH deployments with optimized CAPEX. Users can also leverage the USB interface on Zyxel VMG3625-T20A for file sharing or pair it with a 3G USB dongle for mobile connectivity.

Wireless Standard

  • 802.11 b/g/n 2.4 GHz
  • 802.11 a/n/ac 5 GHz

VDSL Compliance

  • ITU-T G.993.2 VDSL2, band plan 997, 998 over POTS
  • VDSL profiles (8a/b/c/d, 12a/b, 17a, 30a)
  • ITU-T G.993.5 (G.vector)
  • ITU-T G.998.4 (G.inp): up to 16 symbols
  • SRA (Seamless Rate adaptation)
  • UPBO (Upstream Power Back-off)
  • PhyR (Physical Layer Retransmission)
  • TR-114

ADSL Compliance

  • ITU-T G.992.1 (G.dmt) Annex A
  • ITU-T G.992.2 (G.lite) Annex A
  • ANSI T1.413
  • ITU-T G.992.3 ADSL2
  • ITU-T G.992.5 ADSL2+
  • ITU-T G.998.4 (G.inp)
  • Reach-Extended ADSL (RE ADSL)
  • SRA (Seamless Rate Adaption)
  • PhyR (Physical Layer Retransmission)
  • TR-067/100


  • 802.11ac 5 GHz with 866 Mbps data rate
  • 802.11n 2.4 GHz with 300 Mbps data rate
  • WEP data encryption 64/128 bit
  • Wireless Protected Setup (WPS)
  • Multi SSID (up to 4) and hidden SSID support


  • File sharing
  • 3G dongle


  • PPPoE (RFC2516)
  • PPPoA (RFC2364)
  • DHCP client/server/relay
  • DNS proxy/static DNS/DNS from ISP
  • IGMP v1, v2, v3
  • IEEE 802.1d transparent bridge
  • Static route/policy routing
  • IP protocol (IPv4/IPv6)


  • VLAN active (Enable/Disable)/802.1p (0-7)/802.1q (1-4094)
  • Support flexible traffic classification
  • TCP/UDP port range
  • Ether type (NA/IP/ARP/PPPoE discovery/PPPoE session/802.1Q/IPv6)
  • Source & Destination Address/ Subnet Mask/Port Range/MAC/MAC Mask
  • Predefine service
  • IP Protocol (TCP/UDP/ICMP/IGMP/ User defined)
  • DHCP OPT (60/61/77/125)
  • Packet length
  • 6-bit DiffServ code point (DSCP, RFC 2474)

Firewall & Security

  • MAC filter
  • Scheduler rule
  • IPv4/IPv6 Firewall (Sateful Packet Inspection)
  • Parental control
  • ACL rule support: (32 ACL rules)
  • DoS protection


  • Web/HTTP: 3 level log-in
  • Login privilege
  • CLI (Command Line Interpreter) via SSH or Telnet
  • Firmware upgrade via Web/TFTP/FTP/TR069 RPC method
  • Text based configuration (XML based)
  • Configuration backup/update/restore default via Web
  • Configurable access control for remote management (Interface and/ port number)
  • Trust domain
  • DSL forum TR-069, TR-098, TR-181 issue-2, TR-064, TR-111
  • SNMP v1, v2
  • Rom-D support
  • TR-069 serial number parameter MUST be device serial number in back label