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6
DI-724U User’s Manual
D-Link Systems, Inc.
Features and Benefits
Features and Benefits
Fully compatible with the 802.11g standard to provide a wireless data rate of up
to 108Mbps*.
Backwards compatible with the 802.11b standard to provide a wireless data rate
of up to 11Mbps
WPA
(Wi Fi Protected Access) authorizes and identifies users based on a secret
key that changes automatically at a regular interval, for example:
TKIP
(Temporal Key Integrity Protocol), in conjunction with a RADIUS server,
changes the temporal key every 10,000 packets, ensuring greater security
Pre Shared Key
mode means that the home user, without a RADIUS server,
will obtain a new security key every time the he or she connects to the network,
vastly improving the safety of communications on the network
802.1x Authentication in conjunction with the RADIUS server verifies the identity
of would be clients
Utilizes
OFDM
technology (
O
rthogonal
F
requency
D
ivision
M
ultiplexing)
User-friendly configuration and diagnostic utilities
Operates in the 2.4GHz frequency range
Connects multiple computers to a Broadband (Cable or DSL) modem to share
the Internet connection
Advanced Firewall features: Supports NAT with VPN pass-through, providing
added security, MAC Filtering, URL Filtering, and Scheduling
DHCP server enables all networked computers to automatically receive IP
addresses
Web-based interface for Managing and Configuring
Access Control to manage users on the network
Supports special applications that require multiple connections
Equipped with 4 10/100 Ethernet ports, 1 WAN port, Auto MDI/MDIX
* Maximum wireless signal rate derived from IEEE Standard 802.11g specifications. Actual data
throughput will vary.
Network conditions and environmental factors, including volume of network traffic,
building materials and construction, and network overhead lower actual data throughput rate. D-Link
108G performance results are based on testing with other D-Link 108G enabled devices utilizing Packet
Bursting, FastFrames, Turbo Mode and Compression techniques. Data already compressed may not
benefit from the D-Link 108G compression techniques..
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Page 7 / 101
7
DI-724U User’s Manual
D-Link Systems, Inc.
Hardware Overview
Hardware Overview
Connections
DC Power Connector
The DC power input connector is
labeled
DC 5V 2.5A
with a single
jack socket to supply power to the
DI-724U.
All Ethernet Ports (WAN and LAN)
are auto MDI/MDIX, meaning you
can use either a straight-through or a
crossover Ethernet cable.
Auto MDI/MDIX WAN Port
This is the connection for the Ethernet
cable to the Cable or DSL modem.
Auto MDI/MDIX LAN Ports
These ports automatically sense
the cable type when connecting to
Ethernet-enabled computers.
Reset Button
Pressing the Reset Button restores the router
to its original factory default settings.
USB Port
Connection for a USB printer.
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Page 8 / 101
8
DI-724U User’s Manual
D-Link Systems, Inc.
Hardware Overview
LEDs
LOCAL
NETWORK LED
A solid green light indicates a connection
to an Ethernet-enabled computer on
ports 1-4. This LED will blink during
data transmission.
STATUS
A blinking light indicates that
the DI-724U is ready.
POWER LED
A solid green light indicates
a proper connection to the
power supply.
WAN LED
A solid light indicates a connection
on the WAN Port. This LED will blink
during data transmission.
WAN LED
A solid light indicates that the wireless
segment is ready.
This LED will blink
during data transmission.
USB LED
A solid light indicates a connection
on the USB port. This LED will
blink during data transmission.
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Page 9 / 101
9
DI-724U User’s Manual
D-Link Systems, Inc.
Wireless Basics
Wireless Basics
D-Link
wireless products are based on industry standards to provide easy-to-use and
compatible high-speed wireless connectivity within your home, business or public
access wireless networks. D-Link wireless products will allow you access to the data you
want, when and where you want it. You will be able to enjoy the freedom that wireless
networking brings.
A WLAN is a cellular computer network that transmits and receives data with radio signals
instead of wires. WLANs are used increasingly in both home and office environments,
and public areas such as airports, coffee shops and universities. Innovative ways to
utilize WLAN technology are helping people to work and communicate more efficiently.
Increased mobility and the absence of cabling and other fixed infrastructure have proven
to be beneficial for many users.
Wireless users can use the same applications they use on a wired network.
Wireless
adapter cards used on laptop and desktop systems support the same protocols as
Ethernet adapter cards.
People use wireless LAN technology for many different purposes:
Mobility -
Productivity increases when people have access to data in any location
within the operating range of the WLAN.
Management decisions based on real-time
information can significantly improve worker efficiency.
Low Implementation Costs –
WLANs are easy to set up, manage, change and relocate.
Networks that frequently change can benefit from WLANs ease of implementation.
WLANs can operate in locations where installation of wiring may be impractical.
Installation and Network Expansion
- Installing a WLAN system can be fast and easy
and can eliminate the need to pull cable through walls and ceilings. Wireless technology
allows the network to go where wires cannot go - even outside the home or office.
Scalability
– WLANs can be configured in a variety of topologies to meet the needs
of specific applications and installations. Configurations are easily changed and range
from peer-to-peer networks suitable for a small number of users to larger infrastructure
networks to accommodate hundreds or thousands of users, depending on the number
of wireless devices deployed.
Inexpensive Solution
- Wireless network devices are as competitively priced as
conventional Ethernet network devices.
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Page 10 / 101
10
DI-724U User’s Manual
D-Link Systems, Inc.
Wireless Basics
Installation Considerations
The D-Link DI-724U Wireless 108G Qos Router lets you access your network, using
a wireless connection, from virtually anywhere within its operating range. Keep in mind,
however, that the number, thickness and location of walls, ceilings, or other objects that the
wireless signals must pass1 Keep the number of walls and ceilings between the DI-724U
and other network devices
to a minimum - each wall or ceiling can reduce your D-Link
wireless product’s range from 3-90 feet (1-30 meters.) Position your
devices so that the
number of walls or ceilings is minimized.
1
Keep the number of walls and ceilings between the DI-724U and other network
devices
to a minimum - each wall or ceiling can reduce your D-Link wireless
product’s range from 3-90 feet (1-30 meters.) Position your
devices so that the
number of walls or ceilings is minimized.
2
Be aware of the direct line between network devices. A wall that is 1.5 feet thick
(.5 meters), at a 45-degree angle appears to be just over 2 feet (.6 meters) thick.
At a 2-degree angle it looks over 42 feet (14 meters) thick! Position devices so
that the signal will travel straight through a wall or ceiling (instead of at an angle)
for better reception.
3
Building Materials can impede the wireless signal - a solid metal door or aluminum
studs may have a negative effect on range. Try to position wireless devices and
computers with wireless adapters so that the signal passes through drywall or
open doorways and not other materials.
4
Keep your product away (at least 3-6 feet or 1-2 meters) from electrical
devices or appliances that generate extreme RF noise.
Standards-Based Technology
The DI-724U Wireless 108G QoS Router utilizes the
802.11g
standard.
The IEEE
802.11g
standard is an extension of the 802.11b standard.
It increases the
data rate up to 54Mbps* within the 2.4GHz band, utilizing
OFDM technology.
This means that in most environments, within the specified range of this device, you will
be able to transfer large files quickly or even watch a movie in MPEG format over your
network without noticeable delays. This technology works by transmitting high-speed
digital data over a radio wave utilizing
OFDM
(
O
rthogonal
F
requency
D
ivision
M
ultiplexing)
technology.
OFDM
works by splitting the radio signal into multiple smaller sub-signals
that are then transmitted simultaneously at different frequencies to the receiver.
OFDM
reduces the amount of
crosstalk
(interference) in signal transmissions.
The DI-724U is backwards compatible with 802.11b devices. This means that if you
have an existing 802.11b network, the devices in that network will be compatible with
802.11g devices at speeds of up to 11Mbps in the 2.4GHz range.
* Maximum wireless signal rate derived from IEEE Standard 802.11g specifications.
Actual data
throughput will vary.
Network conditions and environmental factors, including volume of network
traffic, building materials and construction, and network overhead lower actual data throughput rate.
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