D-Link DSL-2320B User Guide

Table of Contents

Table of Contents

General Information ....................................................4

Package Contents.................................................... 4

Important Safety Instructions ................................... 4

Front Panel View ......................................................5

Rear Panel View ...................................................... 6

Installing the Modem ...................................................7

Installation Diagram ....................................................9

USB Driver Installation ..............................................10

Configuring Your Computer ...................................... 14

Windows® 2000 ...................................................... 14

Windows® XP .........................................................15

Log in to the Modem ................................................16

Home ...........................................................................17

Bridge Filters .........................................................35

MAC Filtering Setup ......................................... 35

Parental Control ..................................................... 37

Time of Day Restrictions .................................. 37

Tools ........................................................................... 38

Access Control.......................................................38

Access Control—Admin ...................................39

Access Control—Services ............................... 39

Access Control—IP Address ...........................40

Time ....................................................................... 41

Remote Log ...........................................................42

System ................................................................... 44

Save and Reboot .............................................44

Backup Settings ...............................................44

Update Settings ............................................... 45

Restore Default Settings ..................................45

Wizard....................................................................17

ATM PVC Configuration ............................... 17

WAN ......................................................................23

LAN ........................................................................ 29

Logout .................................................................... 30

Advanced Setup ........................................................31

ADSL ..................................................................... 31

ADSL Settings .................................................32

ADSL Tone Settings .........................................33

SNMP .................................................................... 34

Firmware ..........................................................46

Test .................................................................. 47

Status ..........................................................................48

Device Info .............................................................48

WAN Info ................................................................49

Route Info ..............................................................49

Log ......................................................................... 50

LAN ........................................................................ 50

WAN ......................................................................51

2D-Link DSL-2320B ADSL2+ Ethernet/USB Modem User Manual

Table of Contents

ATM ........................................................................52

ADSL ..................................................................... 53

ADSL BER Test......................................................54

Troubleshooting .........................................................56

Networking Basics ....................................................58

Check your IP address .......................................... 58

Check your MAC address ......................................58

Statically Assign an IP address ............................. 59

Contacting Technical Support .................................. 60

Warranty ..................................................................... 61

Registration ................................................................63

3D-Link DSL-2320B ADSL2+ Ethernet/USB Modem User Manual

Section 1 - General Information

General Information

The D-Link DSL-2320B is an ADSL2+ modem offering the convenience of both Ethernet and USB connections. This
user manual provides you with a simple and easy-to-understand format to install and configure your modem.

Package Contents

• ADSL2/2+ Ethernet/USB Modem

• 12VDC, 1A DC CEC-compliant switching power adapter

• RJ-11 telephone cable

• RJ-45 Ethernet cable

• USB Cable

• Quick Install Guide

• Documentation CD-ROM (QIG + User Manual)

Note: Using a power supply with a different voltage rating than the one included with the DSL-2320B will cause damage
and void the warranty for this product.

Important Safety Instructions

• Place your modem on a flat surface close to the cables in a location with sufficient ventilation.

• To prevent overheating, do not obstruct the ventilation openings of this equipment.

• Plug this equipment into a surge protector to reduce the risk of damage from power surges and lightning
strikes.

• Operate this equipment only from an electrical outlet with the correct power source as indicated on the
adapter.

• Do not open the cover of this equipment. Opening the cover will void any warranties on the equipment.

• Unplug equipment first before cleaning. A damp cloth can be used to clean the equipment. Do not use
liquid/aerosol cleaners or magnetic/static cleaning devices.

4D-Link DSL-2320B ADSL2+ Ethernet/USB Modem User Manual

Section 1 - General Information

Power LED
A solid green light indicates
the unit is powered up. A red
light indicates a malfunction.

Front Panel View

Local Network LED

A solid light indicates a connection to an
Ethernet-enabled computer. This LED blinks
during data transmission.

Internet LED

A solid green light indicates that the modem
has an IP address and is connected to
the Internet. A red light indicates that the
modem does not have an IP address or
authentication has failed. No light indicates
that an ADSL connection is not present or
the modem is in bridge mode.

Status LED

A blinking light indicates traffic is
passing through the DSL-2320B.

DSL LED

A Solid light indicates the DSL
is synchronized. A flashing
LED indicates the modem is
attempting to synchronize with
the DSL provider.

USB LED

A Solid light indicates a connection is
established using USB. A flashing LED
indicates traffic is being send and received
using USB.

5D-Link DSL-2320B ADSL2+ Ethernet/USB Modem User Manual

Section 1 - General Information

Rear Panel View

ON/OFF

Press this button to turn the
unit on or off.

Power Receptor

Receptor for the supplied
power adapter.

LAN Port

Connect Ethernet devices such as
computers, switches, and hubs.

USB Port

Connect a computer using a USB
cable.

DSL Line

Connect to an active telephone
line (RJ-11).

Reset
Pressing the Reset button restores
the modem to its original factory
default settings.

6D-Link DSL-2320B ADSL2+ Ethernet/USB Modem User Manual

Section 2 - Installing The Modem

• Connect an RJ-11 cable between the wall phone jack and the line-end of the splitter (see diagram
below).

• Attach another RJ-11 phone cable to the modem-end of the splitter and the ADSL port on the rear panel
of the modem.

• The phone-end of the splitter will be connected to the telephone using a third RJ-11 phone cable.

Installing the Modem

Connect the ADSL and Telephone Lines

Note: See connections on the installation diagram.

Connect the PC to the Modem

• To use the Ethernet connection, connect the Ethernet cable from the computer directly to the modem.
Connect one end of the Ethernet cable to the port labeled LAN on the back of the modem and attach the
other end to the Ethernet port of your computer.

• Or, you can use the supplied USB cable to connect your computer directly to the modem. Connect one
end of the USB cable to the USB port on the back of the modem and connect the other end to a free USB
port on your PC. The Found New Hardware Wizard will open on your PC. See the Installation Diagram
on page 9.

7D-Link DSL-2320B ADSL2+ Ethernet/USB Modem User Manual

Section 2 - Installing The Modem

• If your LAN has more than one computer, you can attach one end of an Ethernet cable to a hub or a
switch and the other to the Ethernet port (labeled LAN) on the modem. Note that either a crossover or
straight-through Ethernet cable can be used. The modem automatically recognizes the type of connection
that is required.

• Complete the process by connecting the supplied 12VAC, 1A power adapter to the POWER connector
on the back of the device and plug the adapter into a wall outlet or power strip. Then turn on and boot up
your PC and any LAN devices, such as hubs or switches, and any computers connected to them.

Connect the Power Adapter

8D-Link DSL-2320B ADSL2+ Ethernet/USB Modem User Manual

Section 3 - Installation Diagram

Installation Diagram

9D-Link DSL-2320B ADSL2+ Ethernet/USB Modem User Manual

Section 5 - USB Installation

USB Driver Installation

To connect your computer to the modem by the USB cable instead of the Ethernet cable, you will need to install the
modem’s USB driver. If you are completing the setup using the ethernet port on the modem, skip this section and
proceed to “Configuring your Computer”. The following are general steps (may vary for each computer) to complete
the USB driver installation on a Windows® 2000/XP operating system.

The following pop-up window appears when you
connect the USB cable to your computer (with the
other end already attached to the modem).

The Found New Hardware Wizard will appear on
your screen. To continue, click Next.

10D-Link DSL-2320B ADSL2+ Ethernet/USB Modem User Manual

Section 5 - USB Installation

The next screen allows you to select how you want the wizard
to find the driver on your computer. The default selection is set
to search for a suitable driver for my device (recommended).
To contunue, click Next.

Next, you can specify the search locations. Make sure
CD-ROM drives and Specify a Location are selected
and click Next.

11D-Link DSL-2320B ADSL2+ Ethernet/USB Modem User Manual

Section 5 - USB Installation

At this point, you can insert the CD-ROM into your
computer’s CD-ROM drive and click on the Browse button
to specify the CD-ROM drive of your computer.

To driver is located in the folder named D-Link_WHQL_
USB_Driver. The file name is usbdslur.inf. Click Open
to proceed with the installation.

After the file has been selected, the this screen will appear
verifying the location where the file will be extracted from.
Click on OK to continue.

12D-Link DSL-2320B ADSL2+ Ethernet/USB Modem User Manual

Section 5 - USB Installation

This next screen shows the device and the driver to be
installed. Click Next to proceed with the installation.

The last screen confirms that the installation is complete.
Click on Finish to close the wizard.

13D-Link DSL-2320B ADSL2+ Ethernet/USB Modem User Manual

Section 4 - Configuring Your Computer

Configuring Your Computer

Prior to accessing the modem through the LAN or USB port, note the following necessary configurations:

• Your PC’s TCP/IP address: 192.168.1.x (where “x” is any number between 2 and 254)

• The modem’s default IP address: 192.168.1.1

• Subnet mask: 255.255.255.0

Below are the procedures for configuring your computer. Follow the instructions for the operating system that you are
using.

Windows® 2000

These are instructions for configuring your Windows® 2000 operating system. If you are using Windows® XP please
proceed to page 15.

1. In the Windows taskbar, click on the Start button and point to Settings > Control Panel > Network and
Dial-up Connections (in that order).

2. Click on Local Area Connection. When you have the Local Area Connection Status window open, click
on Properties.

3. Listed in the window are the installed network components. If the list includes Internet Protocol (TCP/IP),
then the protocol has already been enabled, and you can skip to Step 10.

4. If Internet Protocol (TCP/IP) does not appear as an installed component, then click on Install.

5. In the Select Network Component Type window, click on protocol and then the Add button.

6. Select Internet Protocol (TCP/IP) from the list and then click on OK.

14D-Link DSL-2320B ADSL2+ Ethernet/USB Modem User Manual

Section 4 - Configuring Your Computer

7. If prompted to restart your computer with the new settings, click OK.

8. After your computer restarts, click on the Network and Dial-up Connections icon again, and right click
on the Local Area Connection icon and then select Properties.

9. In the Local Area Connection Properties dialog box, select Internet Protocol (TCP/IP) and then click on
Properties.

10. In the Internet Protocol (TCP/IP) Properties dialog box, click in the radio button labeled Use the following
IP address and type 192.168.1.x (where “x” is any number between 2 and 254) and 255.255.255.0 in
the IP address field and Subnet Mask field.

11. Click on OK twice to save your changes and then close the Control Panel.

Windows® XP

1. In the Windows taskbar, click on the Start button then go to Control Panel and then click Network
Connections.

2. In the Network Connections window, right-click on the Local Area Connection icon and click on
Properties.

3. Listed in the Local Area Connection window are the installed network components. Make sure the box
for Internet Protocol (TCP/IP) is checked and then click on Properties.

4. In the Internet Protocol (TCP/IP) Properties dialog box, click on the radio button labeled Use the following
IP address and type 192.168.1.x (where x is any number between 2 and 254) for the IP address field
and 255.255.255.0 for the Subnet Mask field.

5. Click on OK twice to save your changes and then close the Control Panel.

15D-Link DSL-2320B ADSL2+ Ethernet/USB Modem User Manual

Section 6 - Log In To The Modem

Log in to the Modem

This section will explain how to log in to your modem using the following steps:

1. Launch your web browser.

2. Enter the URL http://192.168.1.1 in the address bar and press Enter.

A login screen like the one below will be displayed after you connect to the user interface.

Note: There are three account types, each requiring
a different username and password.

• The user account provides limited access to
certain configurations (username / password:
user / user).

• The admin account can perform all functions

(username / password: admin / admin).

• The support account is for ISP technicians for
maintenance purposes

(username / password: support / support).

Note: Passwords can be changed at any time.

3. Enter your user name and password, and then click OK to display the user interface.

Note: This manual has been prepared using the admin user name.

16D-Link DSL-2320B ADSL2+ Ethernet/USB Modem User Manual

Section 7 - Home

Home

The home section provides configurations for general use, including a Quick Setup Wizard with steps to quickly set
up your modem for Internet connection. Also included in this section are LAN/WAN setup and DNS configuration. The
next sections explain the setup for each.

Wizard

This section will explain how to quickly configure the modem if your only intention is to access the Internet.

ATM PVC Configuration

To enable the auto-connect process, click on the box labeled DSL Auto-connect, a process that will automatically
detect the first usable PVC and automatically detect PPPoE, PPPoA, and Bridge Protocol (with DHCP Server available).
To continue, click on the Next button.

17D-Link DSL-2320B ADSL2+ Ethernet/USB Modem User Manual

Section 7 - Home

If you uncheck the DSL Auto-connect box, the resulting screen is seen below. Enter the VPI/VCI as indicated by your
ISP.

18D-Link DSL-2320B ADSL2+ Ethernet/USB Modem User Manual

Section 7 - Home

The following is the Connection Type screen where you select the type of network protocol and encapsulation mode
over the ATM PVC that your ISP has instructed you to use. Connection types include PPPoA, PPPoE, and Bridging
modes.

Note: The following is a bridging example. Click on Next to continue.

19D-Link DSL-2320B ADSL2+ Ethernet/USB Modem User Manual

Section 7 - Home

The Enable Bridge Service checkbox is selected by default with the bridge service name in the box. Click on Next to
continue.

20D-Link DSL-2320B ADSL2+ Ethernet/USB Modem User Manual

Section 7 - Home

The next screen displays the LAN IP address and subnet mask. Make any necessary changes and click on Next.

21D-Link DSL-2320B ADSL2+ Ethernet/USB Modem User Manual

Section 7 - Home

After all of the WAN configurations are done, the WAN Setup Summary screen displays all WAN settings that you
have made. Check that the settings are correct before clicking on the Save / Reboot button. Clicking on Save /
Reboot will save your settings and restart your modem.

22D-Link DSL-2320B ADSL2+ Ethernet/USB Modem User Manual

Section 7 - Home

Configure the WAN settings as provided by your ISP.

Click on the Add button if you want to add a
new connection for the WAN interface and to
proceed to the ATM PVC Configuration screen
as seen here. The ATM PVC Configuration
screen allows you to configure an ATM PVC
identifier (VPI and VCI) and select a service
category.

Find out the following values from your ISP
before you change them.

WAN

23D-Link DSL-2320B ADSL2+ Ethernet/USB Modem User Manual

Section 7 - Home

Note: The Following settings are ISP dependant. For information regarding proper configuration, contact your ISP.

VPI:

Virtual Path Identifier. The valid range is 0 to 255.

Virtual Channel Identifier. The valid range is 32 to 65535.

VCI:

Service

Category:

without Peak Cell Rate):

(Unspecified Bit Rate with

CBR (Constant Bit Rate):

Five classes of traffic are listed:

UBR Without PCR

(Unspecified Bit Rate

UBR With PCR

Peak Cell Rate):

(Unspecified Bit Rate without Peak Cell Rate) UBR
service is suitable for applications that can tolerate
variable delays and some cell losses. Applications
suitable for UBR service include text/data/image
transfer, messaging, distribution and retrieval
and also for remote terminal applications such as
telecommuting.

(Unspecified Bit Rate with Peak Cell Rate ) UBR
service is suitable for applications that can tolerate
variable delays and some cell losses. The Peak Cell
Rate is a determining factor in how often cells are
sent in an effort to minimize lag or jitter caused by
traffic inconsistencies.

(Constant Bit Rate) Used by applications that require a fixed data rate that is continuously available
during the connection time. It is commonly used for uncompressed audio and video information such as
videoconferencing, interactive audio (telephony), audio / video distribution (e.g. television, distance learning,
and pay-per-view), and audio / video retrieval (e.g. video-on-demand and audio library).

Non Realtime VBR

(Non-Real-time

Variable Bit Rate):

Realtime VBR (Real-time

Variable Bit Rate):

Quality of

Service:

Can be enabled only for UBR without PCR, UBR with PCR, and Non Realtime VPR.

(Non-Real-time Variable Bit Rate) Can be used for data transfers that have critical response-time
requirements such as airline reservations, banking transactions, and process monitoring.

(Real-time Variable Bit Rate) Used by time-sensitive applications such as real-time video. Rt-VBR service
allows the network more flexibility than CBR.

24D-Link DSL-2320B ADSL2+ Ethernet/USB Modem User Manual

Section 7 - Home

This screen shows the types of network
protocols and encapsulation modes:

• PPP over ATM (PPPoA)

• PPP over Ethernet (PPPoE)

• Bridging

25D-Link DSL-2320B ADSL2+ Ethernet/USB Modem User Manual

Section 7 - Home

The following screen allows you to enter PPP username and password as well as make any selections regarding
your connection.

Dial on demand:

Allows you to manually connect to the
Internet so you are not permanently
connected. Idle timeout timer is
included.

PPP IP extension:

Keep alive:

Use static IP

address:

Used by some ISP’s. Check with your
ISP to see if it is required.

Keeps you connected to your ISP
even when no activity is present for
a certain period of time.

Select if you want to use a non-DHCP
issued IP address to connect to the
Internet. If selected, you will be asked
to enter the static IP address.

Click Next when finished with your configurations
and the below screen will follow displaying the WAN
settings that you made.

26D-Link DSL-2320B ADSL2+ Ethernet/USB Modem User Manual

Section 7 - Home

When satisfied with the settings click on the Apply
button.

27D-Link DSL-2320B ADSL2+ Ethernet/USB Modem User Manual

Section 7 - Home

After you apply the configurations, it will return
to the WAN Setup screen showing the new
configurations. Select the Finish button to
save the changes and reboot the modem.

This is the DSL Modem Reboot screen that will
appear during the rebooting process.

28D-Link DSL-2320B ADSL2+ Ethernet/USB Modem User Manual

Section 7 - Home

You can configure the DSL Modem IP address
and Subnet Mask for the LAN interface.

The Save but ton only saves th e LAN
configuration data, but does not apply the
configurations. Select the Save/Reboot button
to save the LAN configuration data, then reboot
the modem and apply the new configuration.

LAN

29D-Link DSL-2320B ADSL2+ Ethernet/USB Modem User Manual

Section 7 - Home

Logout

To log out of the modem’s user interface at any time during the setup, click on the Logout button. A confirmation screen
will appear confirming that you really want to log out.

30D-Link DSL-2320B ADSL2+ Ethernet/USB Modem User Manual

Section 8 - Advanced Setup

Advanced Setup

This section of the setup is an advanced version of the quick setup. If you want to make specific configurations to
your modem such as creating a SNMP, etc., consider going through this advanced setup for a more comprehensive
configuration.

ADSL

The ADSL settings page contains modulation and
capability settings. Consult your ISP to determine the
correct settings. Click Apply if you are finished or click
on Advanced Settings if you want to configure other
advanced settings.

31D-Link DSL-2320B ADSL2+ Ethernet/USB Modem User Manual

Section 8 - Advanced Setup

ADSL Settings

The test mode can be selected from the ADSL Advanced Settings page. Test modes include normal, reverb, medley,
no retrain, and L3. After you make your selection, click on Apply to save these settings first before you go to Tone
Selection.

32D-Link DSL-2320B ADSL2+ Ethernet/USB Modem User Manual

Section 8 - Advanced Setup

ADSL Tone Settings

The frequency band of ADSL is split into 256 separate tones, each spaced 4.3125 kHz apart. Each tone carries separate
data, so the modem operates as if 256 separate modems were running in parallel. The tone range is from 0 to 31 for
upstream and from 32 to 255 for downstream. Do not change these settings unless directed by your ISP.

33D-Link DSL-2320B ADSL2+ Ethernet/USB Modem User Manual

Section 8 - Advanced Setup

SNMP

SNMP (Simple Network Management Protocol) is a network protocol that provides a means to monitor the status and
performance of the modem, as well as make configuration changes. It enables a management station to configure,
monitor and receive trap messages from network devices that are configured for SNMP.

To configure the SNMP agent select Enable,
Enter a Read Community, Set Community, System
Name, Location, Contact, and the IP address of
the Trap Manager. To save the configuration click

Apply.

34D-Link DSL-2320B ADSL2+ Ethernet/USB Modem User Manual

Section 8 - Advanced Setup

Bridge Filters

MAC Filtering Setup

MAC filtering can forward or block traffic by MAC address. You
can change the policy or add settings to the MAC filtering table
using the MAC Filtering Setup screen.

If you click Change Policy, a confirmation dialog
allows you to verify your change. Select Yes to
continue, or No to to cancel.

35D-Link DSL-2320B ADSL2+ Ethernet/USB Modem User Manual

Section 8 - Advanced Setup

If you want to add an entry to the MAC filtering table,
Select Add from the MAC Filtering Setup screen. The
Add MAC Filter screen should then appear. Select a
Protocol Type, enter the Destination and Source MAC
address, the necessary Frame Direction, and WAN
interface (bridge mode only). Click Apply to save.

After you save the settings, a screen showing the settings will appear. On this screen you will be able to view and
delete MAC filtering rules.

36D-Link DSL-2320B ADSL2+ Ethernet/USB Modem User Manual

Section 8 - Advanced Setup

Parental Control

Time of Day Restrictions

In a home setting, parents can disallow access to the modem (and the internet) by creating special rules called Time of
Day Restrictions. Using these restrictions, parents can define the time and days computers on the network are allowed
to access the Internet.

Click Add to set up the restrictions.

After you click you Add, you will see the Time of Day Restriction
Add screen. Enter the MAC address of the computer you wish
to place on a time of day restriction, select which days you
would like the restriction to be in place, and Enter a start and
end blocking time.

To determine the MAC address of a computer see “Networking
Basics” in the Appendix section of this manual.

Click Apply to save the settings and continue.

37D-Link DSL-2320B ADSL2+ Ethernet/USB Modem User Manual

Section 9 - Tools

Tools

The tools section contains various administrator functions to maintain your modem. Sections include the following:
Admin, Time, Remote Log, System, Firmware, and Test.

• Admin: Allows you to change the password for the various user names available

• Time: Allows you to set the modem’s time

• Remote Log: Allows you to view logs of the modem’s activities

• System: Allows you to perform functions such as save / reboot, backup, update settings, and restore
default settings

• Firmware: Allows you to upgrade your modem with new available firmware versions

• Test: Allows you to view test information for your Internet connection

Access Control

You can enable or disable some services provided by your modem for LAN and WAN connections. If no WAN
connection is defined, only the LAN side can be configured.

Click the Admin button to change the modems account
passwords.

Click the Services button to configure what services are
allowed to pass through the modem.

Click the IP Address button to define who is permitted
access to local management features.

38D-Link DSL-2320B ADSL2+ Ethernet/USB Modem User Manual

Section 9 - Tools

Access Control—Admin

There are three usernames and passwords (admin, support, and user) that can be
used to control your modem. The passwords for these usernames can be changed
on the Admin screen. Select the Username, enter the Old Password, enter a New
Password, and then confirm the new password. When you are ready, click Apply
at the bottom of the page.

Access Control—Services

From this page you can enable/disable certain services from passing through your modem. Services that can be
enabled/disabled on the LAN/WAN are FTP, HTTP, ICMP, SNMP, Telnet, and TFTP.

FTP:

HTTP:

ICMP:

SNMP:

Telnet:

TFTP:

(File Transfer Protocol) Used for file transfer.

(Hyper Text Transfer Protocol) A communications protocol that enables Web
browsing.

(Internet Control Message Protocol) supports packets containing error, control,
and informational messages.

(Simple Network Management Protocol) A protocol used for network management
and monitoring network devices.

A standard Internet protocol for accessing remote systems.

(Trivial File Transfer Protocol) A very simple form of the File Transfer Protocol
(FTP).

39D-Link DSL-2320B ADSL2+ Ethernet/USB Modem User Manual

Section 9 - Tools

Access Control—IP Address

Web access to the modem can be limited when Access Control Mode is enabled.

Add the IP address to the IP address list by clicking on the
Add button, then select Enabled to enable Access Control
Mode.

If Access Control Mode is disabled, any workstation connected
locally to your modem can access the web interface provided
the correct username and password is supplied at log on.

Enter the IP address of the management station permitted
to access the local configuration and click Apply. This will
return you to the previous screen where you can enable
access control.

40D-Link DSL-2320B ADSL2+ Ethernet/USB Modem User Manual

Section 9 - Tools

Time

The Time Settings page allows you to automatically synchronize your time with a time server on the Internet.

To set the modem’s time, click on the automatically synchronize
with Internet time servers checkbox. Addional time settings will
appear below the checkbox.

Select from the list of NTP (Network Time Protocol) time servers. Then
select the time zone that you are in and click Apply to save.

41D-Link DSL-2320B ADSL2+ Ethernet/USB Modem User Manual

Section 9 - Tools

Remote Log

The System Log screen allows you to view the system log and configure the system log options.

To view the system log, click on the View System Log button.

Note: When you click on the View System Log button, the System
Log screen is located under the Status section (see screen on
right). To return to the previous screen to configure system log,
remember to click on the Tools tab (located on top row) first and
then click on Remotelog.

The System Log screen shows the date/time of the log, the facility
that was logged, the severity level and the log message. Click on
Refresh to view any new information that has been logged.

If the log is enabled, the system will log selected events including
Emergency, Alert, Critical, Error, Warning, Notice, Informational,
and Debugging. All events above or equal to the selected log level
will be logged and displayed.

System log when log is disabled.

System log when log is enabled.

42D-Link DSL-2320B ADSL2+ Ethernet/USB Modem User Manual

Section 9 - Tools

To configure the system log, click the Configure
System Log button.

From the configuration screen, set the log to Enable,
select the Log Level, Display Level and Mode. If the
selected mode is “Remote” or “Both”, events will be sent
to a specified IP address and UDP port of a remote
system log server. If the selected mode is “Local” or
“Both”, events will be recorded and viewed locally. Select
the desired values and click Apply to save the system
log options.

43D-Link DSL-2320B ADSL2+ Ethernet/USB Modem User Manual

Section 9 - Tools

System

The system section includes several tools on one page, including save and reboot, backup settings, update settings,
and restore default settings.

Save and Reboot

The Save/Reboot button, when clicked, will save all configuration changes made on the modem and restart the device.
All new configuration settings will take effect when the modem starts up again.

Backup Settings

The Backup Settings button allows you to save your modem configuration to a file on your computer so that it may
be accessed again later. This feature is useful if you have changed the configuration on the modem, but would like to
revert to a previous configuration.

To save your current configuration, click the Backup
Settings button. The following pop-up screen will
appear with a prompt to open or save the file to your
computer.

44D-Link DSL-2320B ADSL2+ Ethernet/USB Modem User Manual

Section 9 - Tools

Update Settings

To load a previously saved configuration file onto your
modem, click Browse, select the file on your computer
and then click on Update Settings.

The modem will restore settings and reboot to activate
the restored settings.

Restore Default Settings

Restore Default Settings will delete all current settings and restore the modem to factory default settings. Click on the
Restore Default Settings button to proceed. The following confirmation dialog will appear confirming your decision to
restore default settings. Click on OK to continue.

45D-Link DSL-2320B ADSL2+ Ethernet/USB Modem User Manual

Section 9 - Tools

Firmware

If your ISP releases new software for this modem, follow these steps to perform an upgrade.

1. Obtain an updated software image file (firmware) from your ISP.

2. Enter the path of the image file location or click the Browse button to locate the image file.

3. Click the Update Software button once to upload the new image file.

46D-Link DSL-2320B ADSL2+ Ethernet/USB Modem User Manual

Section 9 - Tools

Test

The diagnostics screen allows you to run diagnostic tests to check your DSL connection. The results will show test
results of three connections:

• Connection to your local network

• Connection to your DSL service provider

• Connection to your Internet service provider

There are three buttons at the bottom of the
page; Next Connection (appears only if you
have created more than one connection), Test
and Test with OAM F4 (which will allow you to
retest if necessary).

47D-Link DSL-2320B ADSL2+ Ethernet/USB Modem User Manual

Section 10 - Status

Status

The status section allows you to view general and status information for your modem’s connection.

Device Info

The Device Info page shows details of the modem such as the version of the software, bootloader, LAN IP address,
etc. It also displays the current status of your DSL connection.

48D-Link DSL-2320B ADSL2+ Ethernet/USB Modem User Manual

Section 10 - Status

The WAN Info screen displays WAN connections
previously set up in the Home section. There is
an extra “Status” column used for connection
status information, displaying either ADSL Link
Down or ADSL Link Up.

WAN Info

The Route Info section displays route
information showing the IP addresses of the
destination, gateway, and subnet mask as
well as other route information.

Route Info

49D-Link DSL-2320B ADSL2+ Ethernet/USB Modem User Manual

Section 10 - Status

Log

This is the same screen as seen in the Remotelog section under tools.

LAN

The LAN section shows received and transmitted packet information for the Ethernet interface. Click on Reset Statistics
to renew the information.

50D-Link DSL-2320B ADSL2+ Ethernet/USB Modem User Manual

Section 10 - Status

WAN

The WAN section shows received and transmitted packet information for the WAN connections that you have set up.
Click on Reset Statistics to renew the information.

51D-Link DSL-2320B ADSL2+ Ethernet/USB Modem User Manual

Section 10 - Status

ATM

The ATM section displays statistical values for your ATM interface as well as for AAL5 and AAL5 VCC. Click on Reset
Statistics to reset the values.

52D-Link DSL-2320B ADSL2+ Ethernet/USB Modem User Manual

Section 10 - Status

ADSL

Information contained in the ADSL screen is useful for troubleshooting and diagnosing connection problems.

53D-Link DSL-2320B ADSL2+ Ethernet/USB Modem User Manual

Section 10 - Status

ADSL BER Test

A Bit Error Rate Test (BER Test) is a test that reflects the ratio of error bits to the total number transmitted.

If you click on the ADSL BER Test button at the bottom of the ADSL Statistics
page, the following pop-up screen will appear allowing you to set the tested
time and to begin the test. Click Start to begin the test.

When you start the ADSL BER Test, the following progress window will display
the connection speed as well as the length of time that the test will run for.
At any time during the test, click on the Stop button to terminate the test.

54D-Link DSL-2320B ADSL2+ Ethernet/USB Modem User Manual

Section 10 - Status

When the test is complete, the following window will display the test results
showing the test time, total transferred bits, total error bits and error ratio.
Click Exit to close the window.

55D-Link DSL-2320B ADSL2+ Ethernet/USB Modem User Manual

Section 11 - Troubleshooting

Troubleshooting

This chapter provides solutions to problems that can occur during the installation and operation of the DSL-2320B.
Read the following descriptions if you are having problems. (The examples below are illustrated in Windows® XP. If you
have a different operating system, the screenshots on your computer will look similar to th3e following examples.)

1. Why can’t I access the web-based configuration utility?

When entering the IP address of the D-Link modem (192.168.1.1 for example), you are not connecting to a website
on the Internet or have to be connected to the Internet. The device has the utility built-in to a ROM chip in the device
itself. Your computer must be on the same IP subnet to connect to the web-based utility.

• Make sure you have an updated Java-enabled web browser. We recommend the following:

• Internet Explorer 6.0 or higher

• Netscape 8 or higher

• Mozilla 1.7.12 (5.0) or higher

• Opera 8.5 or higher

• Safari 1.2 or higher (with Java 1.3.1 or higher)

• Camino 0.8.4 or higher

• Firefox 1.5 or higher

• Verify physical connectivity by checking for solid link lights on the device. If you do not get a solid link light, try using
a different cable or connect to a different port on the device if possible. If the computer is turned off, the link light may
not be on.

• Disable any internet security software running on the computer. Software firewalls such as Zone Alarm, Black Ice,
Sygate, Norton Personal Firewall, and Windows® XP firewall may block access to the configuration pages. Check the
help files included with your firewall software for more information on disabling or configuring it.

56D-Link DSL-2320B ADSL2+ Ethernet/USB Modem User Manual

Section 11 - Troubleshooting

• Configure your Internet settings:

• Go to Start > Settings > Control Panel. Double-click the Internet Options Icon. From the Security tab,
click the button to restore the settings to their defaults.

• Click the Connection tab and set the dial-up option to Never Dial a Connection. Click the LAN Settings
button. Make sure nothing is checked. Click OK.

• Go to the Advanced tab and click the button to restore these settings to their defaults. Click OK three
times.

• Close your web browser (if open) and open it.

• Access the web management. Open your web browser and enter the IP address of your D-Link modem in the address
bar. This should open the login page for your the web management.

• If you still cannot access the configuration, unplug the power to the modem for 10 seconds and plug back in. Wait
about 30 seconds and try accessing the configuration. If you have multiple computers, try connecting using a different
computer.

2. What can I do if I forgot my password?

If you forgot your password, you must reset your modem. Unfortunately this process will change all your settings back
to the factory defaults.

To reset the modem, locate the reset button (hole) on the rear panel of the unit. With the modem powered on, use a
paperclip to hold the button down for 10 seconds. Release the button and the modem will go through its reboot process.
Wait about 30 seconds to access the modem. For information about logging into the modem see page 16.

57D-Link DSL-2320B ADSL2+ Ethernet/USB Modem User Manual

Appendix A - Networking Basics

Networking Basics

Check your IP address

After you install your new D-Link device, by default, the TCP/IP settings should be set to obtain an IP address from a
DHCP server (i.e. wireless modem) automatically. To verify your IP address, please follow the steps below.

Click on Start > Run. In the run box type cmd and click OK.

At the prompt, type ipconfig and press Enter.

This will display the IP address, subnet mask, and
the default gateway of your adapter.

If the address is 0.0.0.0, check your device
installation, security settings, and the settings on
your modem. Some firewall software programs may
block a DHCP request on newly installed device.

If you are connecting to a wireless network at a hotspot (e.g. hotel, coffee shop, airport), please contact an employee
or administrator to verify their wireless network settings.

Check your MAC address

Click on Start > Run. In the run box type cmd and click OK.

At the prompt, type ipconfig /all and press Enter.

This will display information about all installed adapters on your computer. Your MAC address is listed as the
“Physical Address” and should look like xx-xx-xx-xx-xx-xx or xx:xx:xx:xx:xx:xx

58D-Link DSL-2320B ADSL2+ Ethernet/USB Modem User Manual

Appendix A - Networking Basics

Statically Assign an IP address

If you are not using a DHCP capable gateway/modem, or you need to assign a static IP address, please follow the
steps below:

Step 1

Windows® XP - Click on Start > Control Panel > Network Connections.
Windows® 2000 - From the desktop, right-click My Network Places > Properties.

Step 2
Right-click on the Local Area Connection which represents your D-Link network adapter and select Properties.

Step 3
Highlight Internet Protocol (TCP/IP) and click Properties.

Step 4

Click Use the following IP address and enter an IP address that is on the same subnet as your network or the LAN
IP address on your modem.

Example: If the modem´s LAN IP address is 192.168.0.1, make your IP address

192.168.0.X where X is a number between 2 and 99. Make sure that the number

you choose is not in use on the network. Set Default Gateway the same as the LAN
IP address of your modem (192.168.0.1).

Set Primary DNS the same as the LAN IP address of your modem (192.168.0.1). The
Secondary DNS is not needed or you may enter a DNS server from your ISP.

Step 5

Click OK twice to save your settings.

59D-Link DSL-2320B ADSL2+ Ethernet/USB Modem User Manual

Appendix B - Contacting Technical Support

Contacting Technical Support

U.S. and Canadian customers can contact D-Link technical support through our web site or by phone.

Before you contact technical support, please have the following ready:

• Model number of the product (e.g. DSL-2320B)

• Hardware Revision (located on the label on the bottom of the modem (e.g. rev A1))

• Serial Number (s/n number located on the label on the bottom of the modem).

You can find software updates and user documentation on the D-Link website as well as frequently asked questions
and answers to technical issues.

For customers within the United States:

Phone Support:

[phone]

(877) 45-DLINK

Internet Support:
http://support.dlink.com

For customers within Canada:

Phone Support:

[phone]

Internet Support:
http://support.dlink.com

60D-Link DSL-2320B ADSL2+ Ethernet/USB Modem User Manual

Appendix C - Warranty

Warranty

Subject to the terms and conditions set forth herein, D-Link Systems, Inc. (“D-Link”) provides this Limited Warranty:

• Only to the person or entity that originally purchased the product from D-Link or its authorized reseller or distributor, and

• Only for products purchased and delivered within the fty states of the United States, the District of Columbia, U.S. Possessions or Protectorates, U.S. Military Installations, or addresses with an APO

or FPO.

Limited Warranty: D-Link warrants that the hardware portion of the D-Link product described below (“Hardware”) will be free from material defects in workmanship and materials under normal use from the

date of original retail purchase of the product, for the period set forth below (“Warranty Period”), except as otherwise stated herein.

• Hardware (excluding power supplies and fans): One (1) year

• Power supplies and fans: One (1) year

• Spare parts and spare kits: Ninety (90) days

The customer's sole and exclusive remedy and the entire liability of D-Link and its suppliers under this Limited Warranty will be, at D-Link’s option, to repair or replace the defective Hardware during the
Warranty Period at no charge to the original owner or to refund the actual purchase price paid. Any repair or replacement will be rendered by D-Link at an Authorized D-Link Service Ofce. The replacement

hardware need not be new or have an identical make, model or part. D-Link may, at its option, replace the defective Hardware or any part thereof with any reconditioned product that D-Link reasonably

determines is substantially equivalent (or superior) in all material respects to the defective Hardware. Repaired or replacement hardware will be warranted for the remainder of the original Warranty Period
or ninety (90) days, whichever is longer, and is subject to the same limitations and exclusions. If a material defect is incapable of correction, or if D-Link determines that it is not practical to repair or replace
the defective Hardware, the actual price paid by the original purchaser for the defective Hardware will be refunded by D-Link upon return to D-Link of the defective Hardware. All Hardware or part thereof

that is replaced by D-Link, or for which the purchase price is refunded, shall become the property of D-Link upon replacement or refund.

Limited Software Warranty: D-Link warrants that the software portion of the product (“Software”) will substantially conform to D-Link’s then current functional specications for the Software, as set forth
in the applicable documentation, from the date of original retail purchase of the Software for a period of ninety (90) days (“Software Warranty Period”), provided that the Software is properly installed on
approved hardware and operated as contemplated in its documentation. D-Link further warrants that, during the Software Warranty Period, the magnetic media on which D-Link delivers the Software will be
free of physical defects. The customer’s sole and exclusive remedy and the entire liability of D-Link and its suppliers under this Limited Warranty will be, at D-Link’s option, to replace the non-conforming
Software (or defective media) with software that substantially conforms to D-Link’s functional specications for the Software or to refund the portion of the actual purchase price paid that is attributable to the
Software. Except as otherwise agreed by D-Link in writing, the replacement Software is provided only to the original licensee, and is subject to the terms and conditions of the license granted by D-Link for
the Software. Replacement Software will be warranted for the remainder of the original Warranty Period and is subject to the same limitations and exclusions. If a material non-conformance is incapable of

correction, or if D-Link determines in its sole discretion that it is not practical to replace the non-conforming Software, the price paid by the original licensee for the non-conforming Software will be refunded

by D-Link; provided that the non-conforming Software (and all copies thereof) is rst returned to D-Link. The license granted respecting any Software for which a refund is given automatically terminates.

Non-Applicability of Warranty: The Limited Warranty provided hereunder for Hardware and Software portions of D-Link’s products will not be applied to and does not cover any refurbished product and any
product purchased through the inventory clearance or liquidation sale or other sales in which D-Link, the sellers, or the liquidators expressly disclaim their warranty obligation pertaining to the product and in
that case, the product is being sold “As-Is” without any warranty whatsoever including, without limitation, the Limited Warranty as described herein, notwithstanding anything stated herein to the contrary.

Submitting A Claim: The customer shall return the product to the original purchase point based on its return policy. In case the return policy period has expired and the product is within warranty, the

customer shall submit a claim to D-Link as outlined below:

• The customer must submit with the product as part of the claim a written description of the Hardware defect or Software nonconformance in sufcient detail to allow D-Link to conrm the same, along

with proof of purchase of the product (such as a copy of the dated purchase invoice for the product) if the product is not registered.

• The customer must obtain a Case ID Number from D-Link Technical Support at 1-877-453-5465, who will attempt to assist the customer in resolving any suspected defects with the product. If the product

is considered defective, the customer must obtain a Return Material Authorization (“RMA”) number by completing the RMA form and entering the assigned Case ID Number at https://rma.dlink.com/.

• After an RMA number is issued, the defective product must be packaged securely in the original or other suitable shipping package to ensure that it will not be damaged in transit, and the RMA number

must be prominently marked on the outside of the package. Do not include any manuals or accessories in the shipping package. D-Link will only replace the defective portion of the product and will
not ship back any accessories.

• The customer is responsible for all in-bound shipping charges to D-Link. No Cash on Delivery (“COD”) is allowed. Products sent COD will either be rejected by D-Link or become the property of D-Link.

Products shall be fully insured by the customer and shipped to D-Link Systems, Inc., 17595 Mt. Herrmann, Fountain Valley, CA 92708. D-Link will not be held responsible for any packages that are
lost in transit to D-Link. The repaired or replaced packages will be shipped to the customer via UPS Ground or any common carrier selected by D-Link. Return shipping charges shall be prepaid by
D-Link if you use an address in the United States, otherwise we will ship the product to you freight collect. Expedited shipping is available upon request and provided shipping charges are prepaid by

the customer.

61D-Link DSL-2320B ADSL2+ Ethernet/USB Modem User Manual

Appendix C - Warranty

D-Link may reject or return any product that is not packaged and shipped in strict compliance with the foregoing requirements, or for which an RMA number is not visible from the outside of the package. The
product owner agrees to pay D-Link’s reasonable handling and return shipping charges for any product that is not packaged and shipped in accordance with the foregoing requirements, or that is determined

by D-Link not to be defective or non-conforming.

What Is Not Covered: The Limited Warranty provided herein by D-Link does not cover: Products that, in D-Link’s judgment, have been subjected to abuse, accident, alteration, modication, tampering,

negligence, misuse, faulty installation, lack of reasonable care, repair or service in any way that is not contemplated in the documentation for the product, or if the model or serial number has been altered,
tampered with, defaced or removed; Initial installation, installation and removal of the product for repair, and shipping costs; Operational adjustments covered in the operating manual for the product, and

normal maintenance; Damage that occurs in shipment, due to act of God, failures due to power surge, and cosmetic damage; Any hardware, software, rmware or other products or services provided by
anyone other than D-Link; and Products that have been purchased from inventory clearance or liquidation sales or other sales in which D-Link, the sellers, or the liquidators expressly disclaim their warranty
obligation pertaining to the product. While necessary maintenance or repairs on your Product can be performed by any company, we recommend that you use only an Authorized D-Link Service Ofce.

Improper or incorrectly performed maintenance or repair voids this Limited Warranty.

Disclaimer of Other Warranties: EXCEPT FOR THE LIMITED WARRANTY SPECIFIED HEREIN, THE PRODUCT IS PROVIDED “AS-IS” WITHOUT ANY WARRANTY OF ANY KIND WHATSOEVER
INCLUDING, WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IF ANY IMPLIED WARRANTY CANNOT BE
DISCLAIMED IN ANY TERRITORY WHERE A PRODUCT IS SOLD, THE DURATION OF SUCH IMPLIED WARRANTY SHALL BE LIMITED TO THE DURATION OF THE APPLICABLE WARRANTY PERIOD
SET FORTH ABOVE. EXCEPT AS EXPRESSLY COVERED UNDER THE LIMITED WARRANTY PROVIDED HEREIN, THE ENTIRE RISK AS TO THE QUALITY, SELECTION AND PERFORMANCE OF
THE PRODUCT IS WITH THE PURCHASER OF THE PRODUCT.

Limitation of Liability: TO THE MAXIMUM EXTENT PERMITTED BY LAW, D-LINK IS NOT LIABLE UNDER ANY CONTRACT, NEGLIGENCE, STRICT LIABILITY OR OTHER LEGAL OR EQUITABLE
THEORY FOR ANY LOSS OF USE OF THE PRODUCT, INCONVENIENCE OR DAMAGES OF ANY CHARACTER, WHETHER DIRECT, SPECIAL, INCIDENTAL OR CONSEQUENTIAL (INCLUDING,
BUT NOT LIMITED TO, DAMAGES FOR LOSS OF GOODWILL, LOSS OF REVENUE OR PROFIT, WORK STOPPAGE, COMPUTER FAILURE OR MALFUNCTION, FAILURE OF OTHER EQUIPMENT
OR COMPUTER PROGRAMS TO WHICH D-LINK’S PRODUCT IS CONNECTED WITH, LOSS OF INFORMATION OR DATA CONTAINED IN, STORED ON, OR INTEGRATED WITH ANY PRODUCT
RETURNED TO D-LINK FOR WARRANTY SERVICE) RESULTING FROM THE USE OF THE PRODUCT, RELATING TO WARRANTY SERVICE, OR ARISING OUT OF ANY BREACH OF THIS LIMITED
WARRANTY, EVEN IF D-LINK HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. THE SOLE REMEDY FOR A BREACH OF THE FOREGOING LIMITED WARRANTY IS REPAIR,
REPLACEMENT OR REFUND OF THE DEFECTIVE OR NON-CONFORMING PRODUCT. THE MAXIMUM LIABILITY OF D-LINK UNDER THIS WARRANTY IS LIMITED TO THE PURCHASE PRICE
OF THE PRODUCT COVERED BY THE WARRANTY. THE FOREGOING EXPRESS WRITTEN WARRANTIES AND REMEDIES ARE EXCLUSIVE AND ARE IN LIEU OF ANY OTHER WARRANTIES OR
REMEDIES, EXPRESS, IMPLIED OR STATUTORY.

Governing Law: This Limited Warranty shall be governed by the laws of the State of California. Some states do not allow exclusion or limitation of incidental or consequential damages, or limitations on
how long an implied warranty lasts, so the foregoing limitations and exclusions may not apply. This Limited Warranty provides specic legal rights and you may also have other rights which vary from state

to state.

Trademarks: D-Link is a registered trademark of D-Link Systems, Inc. Other trademarks or registered trademarks are the property of their respective owners.

Copyright Statement: No part of this publication or documentation accompanying this product may be reproduced in any form or by any means or used to make any derivative such as translation,

transformation, or adaptation without permission from D-Link Corporation/D-Link Systems, Inc., as stipulated by the United States Copyright Act of 1976 and any amendments thereto. Contents are subject

to change without prior notice.

Copyright 2006-2007 by D-Link Corporation/D-Link Systems, Inc. All rights reserved.

CE Mark Warning: This is a Class B product. In a domestic environment, this product may cause radio interference, in which case the user may be required to take adequate measures.

FCC Statement: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable

protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions,
may cause harmful interference to radio communication. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio
or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.

• Increase the separation between the equipment and receiver.

• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

• Consult the dealer or an experienced radio/TV technician for help.

For detailed warranty information applicable to products purchased outside the United States, please contact the corresponding local D-Link ofce.

62D-Link DSL-2320B ADSL2+ Ethernet/USB Modem User Manual

Appendix D - Registration

Registration

Product registration is entirely voluntary and failure to complete or return this form will not diminish your warranty
rights.

Version 1.2

May 14, 2007

63D-Link DSL-2320B ADSL2+ Ethernet/USB Modem User Manual