Technical specifications


  • Internet via cable on DOCSIS 3.1/EuroDOCSIS 3.0 cable connection
  • 4 x gigabit LAN port (10/100/1000 Base-T)
  • Wireless access point compliant with IEEE 802.11ac, n, g, a
  • 2 USB 3.0 ports for printers and storage media
  • Integrated DECT base station for up to 6 cordless telephones
  • ISDN S₀ bus (RJ45) for ISDN telephones or ISDN telephone system
  • 2 a/b ports (TAE, RJ11) for analog telephones, answering machines and fax



  • Internet via cable on DOCSIS 3.1/EuroDOCSIS 3.0 cable connection
  • Integrated DOCSIS 3.1/EuroDOCSIS 3.0 cable modem for rates of up to 6 gigabit/s downstream
  • Full-band capture tuner
  • High-performance wireless router with firewall/NAT, DHCP server, DynDNS client, UPnP
  • Support for IPv6
  • Stateful Packet Inspection Firewall with port sharing
  • Secure remote access, LAN-to-LAN linkup and dial-in to the company network with VPN (WireGuard and IPSec)



  • 4 x 4 Wi-Fi 5 + 4 with Multi-User MIMO
  • Wi-Fi networks compliant with 802.11ac (up to 1733 Mbit/s gross; 5 GHz) and 802.11n (up to 800 Mbit/s gross; 2.4 GHz)
  • With Mesh W-iFi you can combine several wireless access points into one intelligent system (FRITZ!OS 6.90 and later) Find out more at
  • Dual Wi-Fi 5 + 4 for simultaneous operation in the 2.4 and 5 GHz bands
  • Compatible with Wireless 802.11g and a
  • Secure upon delivery with WPA2 encryption, WPA3/2 transition mode is also available
  • AVM Stick & Surf: automatic security for wireless surfing
  • Wi-Fi Protected Setup (WPS)
  • Guest Wi-Fi access – secure surfing for friends and visitors
  • Wi-Fi auto channel: Automated search for Wi-Fi channel free of interference
  • Green AP mode for optimum performance at minimum power consumption
  • Integrates iPhones and Android smartphones in the home network


  • Telephone systems with DECT base station for up to 6 cordless telephones
  • Voice transmission encrypted upon delivery for greater security
  • ISDN S₀ bus for connecting ISDN telephones/ISDN telephone systems
  • 2 a/b ports for connecting analog telephones, answering machines and fax
  • Supports HD telephony for natural sound
  • DECT Eco: Radio network switches off ergonomically
  • 5 integrated answering machines including email forwarding (voice-to-mail)
  • Fax function including email forwarding (fax-to-mail)
  • Call diversion, internal calls, three-party conferencing, call transfer
  • Call blocks, alarm, baby monitor, VIP calls and Do not Disturb
  • Internet telephony SIP-compliant in accordance with RFC 3261
  • Registration of IP telephones (LAN/Wi-Fi) SIP-compliant
  • FRITZ!App Fon for landline calls via your smartphone

Home network convenience

  • Media server makes music, pictures and videos available to devices in the home network (SMB, FTP, UPnP AV)
  • With MyFRITZ!, secure access to your own FRITZ!Box from anywhere
  • FRITZ!NAS – simple, browser-based access to all files in the network, wherever they are stored
  • Powerful processor: networked applications like IPTV, video on demand and music streaming
  • Streams free-to-air TV programs simultaneously to tablets or smartphones (conveniently with FRITZ!App TV) and to computers (with the VLC media player) in your home network.
  • Parental controls, push service, cloud contacts, online storage
  • Guest Wi-Fi access – secure surfing for friends and visitors (Wi-Fi/LAN)
  • Sharing of existing Internet connection over LAN or Wi-Fi
  • Wake on LAN over the Internet


  • "": multi-language user interface, for intuitive operation via Web browser
  • User interface optimized for smartphones and tablets (responsive design)
  • Free updates for new functions and security
  • Handy FRITZ!Apps for your smartphone: MyFRITZ!App for FRITZ! convenience on the go, the clever Wi-Fi helper FRITZ!App WLAN and FRITZ!App Smart Home for intuitive control of your FRITZ! Smart Home
  • Help function with full-text search
  • Smart Home features integrated in the user interface
  • Smart Home support for DECT ULE/HAN FUN devices
  • Smart Home devices can be switched manually and automatically both in the home network and from the Internet

Package contents

  • FRITZ!Box 6591 Cable
  • Power adapter with 1.5-meter cable
  • RJ11/TAE adapter
  • 1.5-meter LAN cable
  • Quick guide

Device properties

  • Dimensions (W x H x D): 85 x 209 x 273 mm
  • Medium power consumption: 11 W


  • 5-year manufacturer’s warranty for end customers

Article number

  • 20002844