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DSL-G684T Wireless ADSL Router User Guide
This section provides a brief description of the Router, its associated technologies, and a list of Router features.
Router Description and Operation
The DSL-G684T Wireless ADSL Router is designed to provide connectivity for your private Ethernet LAN, and
802.11g/802.11b wireless LAN to the Internet via an ADSL connection.
The Router is easy to install and use. Standard Ethernet ports are used to connect to computer or other Ethernet devices.
The 802.11g wireless interface provides connectivity to 802.11g or 802.11b wireless devices.
The embedded 802.11g wireless access point provides Internet access and connectivity to the Ethernet for 802.11g and
802.11b wireless workstations. IEEE 802.11g is fully compatible with IEEE 802.11b wireless devices. The 802.11g
standard supports data transfer rates of up to 54 Mbps. The wireless Router supports 64-bit and 128-bit WEP encryption.
Asymmetric Digital Subscriber Line (ADSL) is a broadband network technology that utilizes standard twisted-pair
copper wire telephone lines to enable broadband high-speed digital data transmission and bandwidth hungry
applications for business and residential customers.
ADSL routers and modems provide faster downloads and more reliable connectivity to the user without loss of quality
or disruption of voice/fax telephone capabilities.
ADSL2+ provides a dedicated service over a single telephone line operating at speeds of up to 24Mbps downstream and
up to 1Mbps upstream, depending on local telephone line conditions. A secure point-to-point connection is established
between the user and the central office of the service provider.
D-Link ADSL devices incorporate the recommendations of the ADSL Forum regarding framing, data format, and upper
The DSL-G684T ADSL Router utilizes the latest ADSL enhancements to provide a reliable Internet portal suitable for
most small to medium sized offices. DSL-G684T advantages include:
• PPP (Point-to-Point Protocol) Security – The DSL-G684T ADSL Router supports PAP (Password
Authentication Protocol) and CHAP (Challenge Handshake Authentication Protocol) for PPP connections.
• DHCP Support – Dynamic Host Configuration Protocol automatically and dynamically assigns all LAN IP
settings to each host on your network. This eliminates the need to reconfigure every host whenever changes in
network topology occur.
• Network Address Translation (NAT) – For small office environments, the DSL-G684T allows multiple users on
the LAN to access the Internet concurrently through a single Internet account. This provides Internet access to
everyone in the office for the price of a single user.
NAT improves network security in effect by hiding the private network behind one global and visible IP address.
NAT address mapping can also be used to link two IP domains via a LAN-to-LAN connection.
• TCP/IP (Transfer Control Protocol/Internet Protocol) – The DSL-G684T supports TCP/IP protocol, the
language used for the Internet. It is compatible with access servers manufactured by major vendors.