Belkin ADSL Modem Wireless Router Firewall

What are you supposed to call these things anyway? They really need a catchy name!

Belkin calls it their "ADSL Modem With Built-In 11g Wireless Router" (Part # F5D7630uk4A)

This is what it does:

  • Broadband ADSL Modem
  • Wireless Access Point - 802.11g, ie. 54Mb/s, and 802.11b, ie. 11Mb/s
  • 4-port Switch - 10/100Mb/s ethernet
  • Router with NAT and DHCP server
  • Firewall with SPI (Stateful Packet Inspection)

What more could you ask for?! (Apart from a print server, file server, ...!)

Belkin Wireless ADSL


Very simple to set up, this unit is also small, neat and quiet. The only drawback being Yet Another Separate Power Supply.

My initial impression was: In use I've had no problems at all, and can heartily recommend it. The Lifetime guarantee is a big plus point, and the Technical Support folks seem knowledgeable too!

Hints and Tips

The latest firmware was released on 9 August 2004, as far as I am aware.

Here's a set of undocumented pages which show statistics and extra configuration information:

The telnet login details are: login is blank, password is the router password set by the web interface. Later models have admin as login name.


Phillip Deackes reports that the device is not Belkin-specific:

Interestingly, you can flash this unit with firmware from SMC. It appears they use the innards of the Belkin in their Barricade device - model SMC7804WBRA. I successfully flashed my Belkin with the SMC firmware and there appeared to be lots of extra options and more feedback as to what is going on. The SMC firmware sets up a password of 'smcadmin' when you log in.

The device seems to be running embedded Linux with a miniPCI intersil (3880 prism chipset) card (incidentally this works in laptops using drivers). You can take apart the firmware, it is just concatenated Zip files, to get PFS.IMG, SOHO.BIN and ISL1030.BIN (the latter is the intersil driver). PFS contains all the web pages and images, SOHO contains the code. Having a look through shows there's a console debug mode ("shift-0: enable debug") which I'll have to investigate.



Router Specifications
IP Sharing Method NAT (Network Address Translation)
Firewall NAT, SPI
Clients Supported 253 Total
Wieless Clients Supported 64 Total
DHCP Server Supported, User Defeatable
User Interface HTTP/Through Web Browser
RJ11 1 WAN (for connection to the DSL modem),
RJ45 Ports 4 LAN (For connection to local clients) auto-uplinking
Wired Network Standards WAN: 802.3 10Base-T
  LAN: 802.3u 10/100Base-T
Protocols Supported TCP/IP, UDP, CSMA/DCD, DHCP, AppleTalk®
ISP Protocols Supported Static
  Multiple Protocol over ATM
Power Consumption 12V/1A
Modem Specifications        
Standard ITU G.dmt (Downstream 8 mbps, Upstream 640kbps)
  ITU G.Lite (Downstream 1.5 mbps, Upstream 512kbps)
  ITU G.Handshake  
  ITU T.413 issue 2 - ADSL full rate  
  Annex A (Annex B Available)  
Radio Specifications
Wireless Standard 802.11g  
Radio technology Direct Sequence Spread Spectrum (DSSS)

64- or 128-bit WEP (Wired Equivalent Privacy), WPA (WiFi Protected Access) Data Encryption with TKIP and AES

Media Access Protocol CSMA/CA (Collision Avoidance) with ACK
Frequency Band ISM Band, 2400-2483.5MHz  
Antenna Type Dual dipole antenna  
Output Power   +13dBm-20dBm (50mW) (max.)  
Modulation Type QPSK, BPSK, CCK  
RF Channels 1-11 Channels (USA, Mexico, Canada), 1-13 (UK)
Data Rates Supported 1, 2, 5.5, 6, 9, 11, 12, 24, 36, 48 & 54 Mbps
Max Operating Range (ft/Meters)        
Outdoors 1800 ft (550m)    
Indoors 300 ft (90m)      
Reciever Sensitivity   -80 dBm  
LED Indicators    
8 LEDs Power, SYN, Data, WAN, LAN (1,2,34)
Operating System Support    
Windows® 95, 98, 98SE, Me, 2000, NT, XP, Linux, Mac OS®  
Environmental Specifications        
  Temperature Humidity
Operating (-10 to 50  degress C) 10% - 95% (non-condensing)
Storage (-40 to 70  degrees C) 10% - 95% (non-condensing)
Package Contents
802.11g Wireless ADSL Modem Router  
Power Supply  
User Manual  
Quick Installation Guide  
RJ45 Networking Cable  

Belkin Wireless ADSL

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