D-Link DSL-300T User Guide

DSL-300T

2nd Edition (October 2004)

651DSL300T02

ADSL Modem

User’s Manual

DSL-300T DSL Modem User’s Guide

FCC Warning

This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1)
This device may not cause harmful interference, and (2) this device must accept any interference received,
including interference that may cause undesired operation.

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 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 communications. 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 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.

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.

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DSL-300T ADSL Modem User’s Guide

Warranty and Registration for all Countries and
Regions Except USA

Wichtige Sicherheitshinweise

1. Bitte lesen Sie sich diese Hinweise sorgfä ltig durch.

2. Heben Sie diese Anleitung für den spä tern Gebrauch auf.

3. Vor jedem Reinigen ist das Gerä t vom Stromnetz zu trennen. Vervenden Sie keine Flüssig- oder Aerosolreiniger. Am besten
dient ein angefeuchtetes Tuch zur Reinigung.

4. Um eine Beschä digung des Gerä tes zu vermeiden sollten Sie nur Zubehörteile verwenden, die vom Hersteller zugelassen sind.

5. Das Gerä t is vor Feuchtigkeit zu schützen.

6. Bei der Aufstellung des Gerä tes ist auf sichern Stand zu achten. Ein Kippen oder Fallen könnte Verletzungen hervorrufen.
Verwenden Sie nur sichere Standorte und beachten Sie die Aufstellhinweise des Herstellers.

7. Die Belüftungsöffnungen dienen zur Luftzirkulation die das Gerä t vor Ü berhitzung schützt. Sorgen Sie dafü r, daß diese
Ö ffnungen nicht abgedeckt werden.

8. Beachten Sie beim Anschluß an das Stromnetz die Anschluß werte.

9. Die Netzanschluß steckdose muß aus Grü nden der elektrischen Sicherheit einen Schutzleiterkontakt haben.

10. Verlegen Sie die Netzanschluß leitung so, daß niemand darü ber fallen kann. Es sollete auch nichts auf der Leitung abgestellt
werden.

11. Alle Hinweise und Warnungen die sich am Gerä ten befinden sind zu beachten.

12. Wird das Gerä t über einen lä ngeren Zeitraum nicht benutzt, sollten Sie es vom Stromnetz trennen. Somit wird im Falle einer
Ü berspannung eine Beschä digung vermieden.

13. Durch die Lüftungsöffnungen dürfen niemals Gegenstä nde oder Flüssigkeiten in das Gerä t gelangen. Dies könnte einen
Brand bzw. Elektrischen Schlag auslösen.

14. Ö ffnen Sie niemals das Gerä t. Das Gerä t darf aus Gründen der elektrischen Sicherheit nur von authorisiertem
Servicepersonal geöffnet werden.

15. Wenn folgende Situationen auftreten ist das Gerä t vom Stromnetz zu trennen und von einer qualifizierten Servicestelle zu
überprü fen:

a. Netzkabel oder Netzstecker sint beschä digt.
b. Flüssigkeit ist in das Gerä t eingedrungen.
c. Das Gerä t war Feuchtigkeit ausgesetzt.
d. Wenn das Gerä t nicht der Bedienungsanleitung ensprechend funktioniert oder Sie mit Hilfe dieser Anleitung

keine Verbesserung erzielen.
e. Das Gerä t ist gefallen und/oder das Gehä use ist beschä digt.
f. Wenn das Gerä t deutliche Anzeichen eines Defektes aufweist.

16. Bei Reparaturen dürfen nur Orginalersatzteile bzw. den Orginalteilen entsprechende Teile verwendet werden. Der Einsatz von
ungeeigneten Ersatzteilen kann eine weitere Beschä digung hervorrufen.

17. Wenden Sie sich mit allen Fragen die Service und Repartur betreffen an Ihren Servicepartner. Somit stellen Sie die
Betriebssicherheit des Gerä tes sicher.

18. Zum Netzanschluß dieses Gerä tes ist eine geprüfte Leitung zu verwenden, Für einen Nennstrom bis 6A und einem
Gerä tegewicht grőßer 3kg ist eine Leitung nicht leichter als H05VV-F, 3G, 0.75mm2 einzusetzen.

WARRANTIES EXCLUSIVE

IF THE D-LINK PRODUCT DOES NOT OPERATE AS WARRANTED ABOVE, THE CUSTOMER'S SOLE REMEDY SHALL BE, AT D­LINK'S OPTION, REPAIR OR REPLACEMENT. THE FOREGOING WARRANTIES AND REMEDIES ARE EXCLUSIVE AND ARE IN
LIEU OF ALL OTHER WARRANTIES, EXPRESSED OR IMPLIED, EITHER IN FACT OR BY OPERATION OF LAW, STATUTORY OR
OTHERWISE, INCLUDING WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. D-LINK NEITHER
ASSUMES NOR AUTHORIZES ANY OTHER PERSON TO ASSUME FOR IT ANY OTHER LIABILITY IN CONNECTION WITH THE SALE,
INSTALLATION MAINTENANCE OR USE OF D-LINK'S PRODUCTS.

D-LINK SHALL NOT BE LIABLE UNDER THIS WARRANTY IF ITS TESTING AND EXAMINATION DISCLOSE THAT THE ALLEGED
DEFECT IN THE PRODUCT DOES NOT EXIST OR WAS CAUSED BY THE CUSTOMER'S OR ANY THIRD PERSON'S MISUSE,
NEGLECT, IMPROPER INSTALLATION OR TESTING, UNAUTHORIZED ATTEMPTS TO REPAIR, OR ANY OTHER CAUSE BEYOND
THE RANGE OF THE INTENDED USE, OR BY ACCIDENT, FIRE, LIGHTNING OR OTHER HAZARD.

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DSL-300T DSL Modem User’s Guide

LIMITATION OF LIABILITY

IN NO EVENT WILL D-LINK BE LIABLE FOR ANY DAMAGES, INCLUDING LOSS OF DATA, LOSS OF PROFITS, COST OF COVER
OR OTHER INCIDENTAL, CONSEQUENTIAL OR INDIRECT DAMAGES ARISING OUT THE INSTALLATION, MAINTENANCE, USE,
PERFORMANCE, FAILURE OR INTERRUPTION OF A D- LINK PRODUCT, HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY.
THIS LIMITATION WILL APPLY EVEN IF D-LINK HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

IF YOU PURCHASED A D-LINK PRODUCT IN THE UNITED STATES, SOME STATES DO NOT ALLOW THE LIMITATION OR
EXCLUSION OF LIABILITY FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES, SO THE ABOVE LIMITATION MAY NOT APPLY TO
YOU.

Limited Warranty

Hardware:

D-Link warrants each of its hardware products to be free from defects in workmanship and materials under normal use and service
for a period commencing on the date of purchase from D-Link or its Authorized Reseller and extending for the length of time
stipulated by the Authorized Reseller or D-Link Branch Office nearest to the place of purchase.

This Warranty applies on the condition that the product Registration Card is filled out and returned to a D-Link office within ninety
(90) days of purchase. A list of D-Link offices is provided at the back of this manual, together with a copy of the Registration Card.

If the product proves defective within the applicable warranty period, D-Link will provide repair or replacement of the product.
D-Link shall have the sole discretion whether to repair or replace, and replacement product may be new or reconditioned.
Replacement product shall be of equivalent or better specifications, relative to the defective product, but need not be identical. Any
product or part repaired by D-Link pursuant to this warranty shall have a warranty period of not less than 90 days, from date of
such repair, irrespective of any earlier expiration of original warranty period. When D-Link provides replacement, then the defective
product becomes the property of D-Link.

Warranty service may be obtained by contacting a D-Link office within the applicable warranty period, and requesting a Return
Material Authorization (RMA) number. If a Registration Card for the product in question has not been returned to D-Link, then a
proof of purchase (such as a copy of the dated purchase invoice) must be provided. If Purchaser's circumstances require special
handling of warranty correction, then at the time of requesting RMA number, Purchaser may also propose special procedure as may
be suitable to the case.

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.
The package must be mailed or otherwise shipped to D-Link with all costs of mailing/shipping/insurance prepaid. D-Link shall
never be responsible for any software, firmware, information, or memory data of Purchaser contained in, stored on, or integrated
with any product returned to D-Link pursuant to this warranty.

Any package returned to D-Link without an RMA number will be rejected and shipped back to Purchaser at Purchaser's expense,
and D-Link reserves the right in such a case to levy a reasonable handling charge in addition mailing or shipping costs.

Software:

Warranty service for software products may be obtained by contacting a D-Link office within the applicable warranty period. A list
of D-Link offices is provided at the back of this manual, together with a copy of the Registration Card. If a Registration Card for the
product in question has not been returned to a D-Link office, then a proof of purchase (such as a copy of the dated purchase invoice)
must be provided when requesting warranty service. The term "purchase" in this software warranty refers to the purchase
transaction and resulting license to use such software.

D-Link warrants that its software products will perform in substantial conformance with the applicable product documentation
provided by D-Link with such software product, for a period of ninety (90) days from the date of purchase from D-Link or its
Authorized Reseller. D-Link warrants the magnetic media, on which D-Link provides its software product, against failure during
the same warranty period. This warranty applies to purchased software, and to replacement software provided by D-Link pursuant
to this warranty, but shall not apply to any update or replacement which may be provided for download via the Internet, or to any
update which may otherwise be provided free of charge.

D-Link's sole obligation under this software warranty shall be to replace any defective software product with product which
substantially conforms to D-Link's applicable product documentation. Purchaser assumes responsibility for the selection of
appropriate application and system/platform software and associated reference materials. D-Link makes no warranty that its
software products will work in combination with any hardware, or any application or system/platform software product provided by
any third party, excepting only such products as are expressly represented, in D-Link's applicable product documentation as being
compatible. D-Link's obligation under this warranty shall be a reasonable effort to provide compatibility, but D-Link shall have no
obligation to provide compatibility when there is fault in the third-party hardware or software. D-Link makes no warranty that
operation of its software products will be uninterrupted or absolutely error-free, and no warranty that all defects in the software
product, within or without the scope of D-Link's applicable product documentation, will be corrected.

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DSL-300T ADSL Modem User’s Guide

Warranty and Registration Information for USA Only

Subject to the terms and conditions set forth herein, D-Link Systems, Inc. (“D-Link”) provides this Limited warranty for its product
only to the person or entity that originally purchased the product from:

l D-Link or its authorized reseller or distributor and
l Products purchased and delivered within the fifty states of the United States, the District of Columbia, U.S. Possessions

or Protectorates, and U.S. Military Installations, addresses with an APO or FPO.

Limited Warranty: D-Link warrants that the hardware portion of the D-Link products described below will be free from material
defects in workmanship and materials from the date of original retail purchase of the product, for the period set forth below
applicable to the product type (“ Warranty Period”), except as otherwise stated herein.

5-Year Limited Warranty for the Product(s) is defined as follows:

l Hardware (excluding power supplies and fans) Five (5) Years
l Power Supplies and Fans Three (3) Year
l Spare parts and spare kits Ninety (90) days

D-Link’s sole obligation shall be to repair or replace the defective Hardware during the Warranty Period at no charge to the original
owner or to refund at D-Link’s sole discretion. Such repair or replacement will be rendered by D-Link at an Authorized D-Link
Service Office. The replacement Hardware need not be new or have an identical make, model or part. D-Link may in its sole
discretion 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 from the date of original retail purchase. If a material defect is
incapable of correction, or if D-Link determines in its sole discretion that it is not practical to repair or replace the defective
Hardware, the 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 specifications 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 (“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
Warranty Period, the magnetic media on which D-Link delivers the Software will be free of physical defects. D-Link’s sole obligation
shall be to replace the non-conforming Software (or defective media) with software that substantially conforms to D-Link’s
functional specifications for the Software or to refund at D-Link’s sole discretion. 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. Software will be warranted for the remainder of the original Warranty Period from the date or original
retail purchase. 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 first 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 of D-Link's products, will
not be applied to and does not cover 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: Any claim under this limited warranty must be submitted in writing before the end of the Warranty Period to
an Authorized D-Link Service Office.

l The customer must submit as part of the claim a written description of the Hardware defect or Software nonconformance

in sufficient detail to allow D-Link to confirm the same.

l The original product owner must obtain a Return Material Authorization (“RMA”) number from the Authorized D-Link

Service Office and, if requested, provide written proof of purchase of the product (such as a copy of the dated purchase
invoice for the product) before the warranty service is provided.

l 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.

l The customer is responsible for all shipping charges to D-Link. No Charge on Delivery (“COD”) is allowed. Products sent

COD will either be rejected by D-Link or become the property of D-Link. Products should be fully insured by the
customer and shipped to D-Link Systems, Inc., 17575 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
via UPS Ground or any common carrier selected by D-Link, with shipping charges prepaid. Expedited shipping is
available if shipping charges are prepaid by the customer.

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: This limited warranty provided by D-Link does not cover: Products, if in D-Link’s judgment, have been
subjected to abuse, accident, alteration, modification, 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

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DSL-300T DSL Modem User’s Guide

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, firmware or other
products or services provided by anyone other than D-Link; 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. Repair by anyone other than D-Link or an Authorized D-Link Service Office will void this 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 NINETY (90) DAYS. 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 D­LINK 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 specific legal rights and the product owner may also have
other rights which vary from state to state.

vi

TABLE OF CONTENTS

About This User’s Guide...............................................................................................................................ix

Before You Start............................................................................................................................................ix

Information Required for Installation..............................................................................................................x

INTRODUCTION........................................................................................................1

Modem Description and Operation.................................................................................................................1

Modem Features..............................................................................................................................................3

Standards Compatibility and Compliance.......................................................................................................4

Front Panel Display.........................................................................................................................................5

Rear Panel Connections..................................................................................................................................6

HARDWARE INSTALLATION...................................................................................7

Power on Modem............................................................................................................................................7

Factory Reset Button.......................................................................................................................................7

Network Connections......................................................................................................................................8

CONFIGURING THE MODEM FOR THE FIRST TIME............................................10

Configuring IP Settings on Your Computer..................................................................................................10

Access the Configuration Manager..................................................................................................15

Home.....................................................................................................................................................16

Configure the Modem...................................................................................................................................17

Setup.....................................................................................................................................................18

Configure a New Connection........................................................................................................................19

WEB-BASED MANAGEMENT................................................................................25

Accessing the Web Manager.........................................................................................................................25

DHCP Configuration.....................................................................................................................................26

Management IP.............................................................................................................................................27

Tools.....................................................................................................................................................28

Changing the User Name and Password.......................................................................................................28

System Commands........................................................................................................................................28

Remote Log...................................................................................................................................................29

User Management.........................................................................................................................................30

Update Gateway............................................................................................................................................32

Ping Test.......................................................................................................................................................33

Status....................................................................................................................................................34

Network Statistics.........................................................................................................................................35

Connection Status.........................................................................................................................................36

DHCP Clients................................................................................................................................................37

Modem Status...............................................................................................................................................38

Product Info..................................................................................................................................................39

System Log...................................................................................................................................................40

Help.......................................................................................................................................................41

TECHNICAL SPECIFICATIONS..............................................................................42

IP ADDRESS SETUP...............................................................................................44

IP CONCEPTS.........................................................................................................46

MICROFILTERS AND SPLITTERS.........................................................................49

DSL-300T DSL Modem User’s Guide

About This User’s Guide

This user’s guide provides instructions on how to install the DSL-300T ADSL Modem and use it to connect a
computer or Ethernet Local Area Network (LAN) to the Internet thus providing a gateway to the Wide Area
Network (WAN).

If you are using a computer with a functioning Ethernet port, the quickest and easiest way to set up the DSL­300T is to follow the instructions provided in the Quick Installation Guide.

Before You Start

Please read and make sure you understand all the prerequisites for proper installation of your new Modem. Have
all the necessary information and equipment on hand before beginning the installation.

Installation Overview

The procedure to install the Modem can be described in general terms in the following steps:

1. Gather information and equipment needed to install the device. Before you power on the device or

connect it to your computer, make sure you have all the necessary information, cables, power adapter
and any other required equipment listed.

2. Install the hardware, that is, connect the cables (Ethernet and telephone) to the device and connect the

power adapter.

3. Check the IP settings on your computer and change them if necessary so the computer can access the

web-based software built into the Modem.

4. Use the web-based management software to configure the device to suit the requirements of your ADSL

account.

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DSL-300T DSL Modem User’s Guide

Information Required for Installation

Information you will need from your ADSL service provider:

Username

Password

Connection Protocol

Security Protocol

VPI

VCI

This is the Username used to log on to your ADSL
service provider’s network. It is commonly in the form −
[e-mail]. Your ADSL service provider uses this
to identify your account.

This is the Password used, in conjunction with the
Username above, to log on to your ADSL service
provider’s network. This is used to verify the identity of
your account.

This is the method your ADSL service provider uses to
send and receive data between the Internet and your
computer. Your Modem supports the following
connection protocols: PPPoE, PPPoA, CLIP (IPoA) and
Bridge.

This is the method your ADSL service provider will use
to verify your Username and Password when you log
on to their network. Your Modem supports the PAP and
CHAP protocols.

This is the Virtual Path Identifier (VPI). It is used in
conjunction with the Virtual Channel Identifier (VCI)
below, to identify the data path between your ADSL
service provider’s network and your computer.

This is the Virtual Channel Identifier (VCI). It is used in
conjunction with the VPI above to identify the data path
between your ADSL service provider’s network and
your computer.

Record info here

Information you will need to change settings on the DSL-300T Modem:

Record info here

Username

Password

LAN IP addresses for
the DSL-300T

LAN Subnet Mask for
the DSL-300T

This is the Username needed access the Modem’s
management interface. When you attempt to connect to
the device through a web browser you will be prompted
to enter this Username. The default Username for the
Modem is admin. This may be changed by the user.

This is the Password you will be prompted to enter
when you access the Modem’s management interface.
The default Password is admin. This may be changed
by the user.

This is the IP address you will enter into the Address
field of your web browser to access the Modem’s
configuration graphical user interface (GUI) using a
web browser. The default IP address is 192.168.1.1
and it is referred to as the “Management IP” address in
this User’s Manual. This may be changed to suit any IP
address scheme the user desires. This address will be
the base IP address used for DHCP service on the LAN
when DHCP is enabled.

This is the subnet mask used by the DSL-300T, and
will be used throughout your LAN. The default subnet
mask is 255.255.255.0. This can be changed later.

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DSL-300T DSL Modem User’s Guide

Information you will need about your Ethernet LAN or computer:

If your computer has an Ethernet NIC, you can
connect the DSL-300T to this Ethernet port using an

Ethernet NIC

DHCP Client status

It is recommended that your collect and record this information here, or in some other secure place, in case you
have to re-configure your ADSL connection in the future.

Once you have the above information, you are ready to setup and configure your DSL-300T ADSL Modem.

The Modem may be reset to its factory default settings by performing a Restore

Note

settings operation within the management interface (see below). If you cannot gain
access to the management interface, you may opt to use the Reset button on the
rear panel of the device (see Factory Reset Button below).

Ethernet cable. You can also use the Ethernet port on
the DSL-300T to connect to other Ethernet devices,
such as a Wireless Access Point.

Your DSL-300T ADSL Modem is configured, by
default, to be a DHCP server. This means that it can
assign an IP address, subnet mask, and a default
gateway address to computers on your LAN. The
default range of IP addresses the DSL-300T will
assign are from 192.168.1.2 to 192.168.1.254. Your
computer (or computers) needs to be configured to
Obtain an IP address automatically (that is, they
need to be configured as DHCP clients.)

Record info here

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DSL-300T ADSL Modem User’s Guide

1

Introduction

This section provides a brief description of the Modem, its associated technologies and a list of Modem features.

Modem Description and Operation

The DSL-300T ADSL Modem is designed to provide a simple and cost-effective ADSL Internet connection for
a single computer through the Ethernet port; or use it to bridge your Ethernet LAN to the Internet. The DSL­300T combines the benefits of high-speed ADSL technology and LAN IP management in one compact and
convenient package. ADSL technology enables many interactive multi-media applications such as video
conferencing and collaborative computing.

The Modem is easy to install and use. The DSL-300T connects to single computer or an Ethernet LAN via a
standard Ethernet interface. The ADSL connection is made using ordinary twisted-pair telephone line with
standard connectors. Multiple PCs can be networked and connected to the Internet using a single Wide Area
Network interface and single global IP address.

What is ADSL?

Asymmetric Digital Subscriber Line (ADSL) is an access technology that utilizes ordinary copper telephone
lines to enable broadband high-speed digital data transmission and interactive multimedia applications for
business and residential customers.

ADSL greatly increases the signal carrying capacity of copper telephone lines without interfering with regular
telephone services. For the ADSL user, this means faster downloads and more reliable connectivity. ADSL
devices make it possible to enjoy benefits such as high-speed Internet access without experiencing any loss of
quality or disruption of voice/fax telephone capabilities.

ADSL provides a dedicated service over a single telephone line operating at speeds of up to 8 Mbps downstream
and up to 640 Kbps 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 layer protocols.

Low Pass Filters

Since ADSL and telephone services share the same copper wiring to carry their respective signals, a filtering
mechanism may be necessary to avoid mutual interference. A low pass filter device can be installed for each
telephone that shares the line with the ADSL line. These filters are easy to install passive devices that connect to
the ADSL device and/or telephone using standard telephone cable. Ask your service provider for more
information about the use of low pass filters with your installation.

Operating Systems

The DSL-300T uses an HTML-based web interface for setup and management. The web configuration manager
may be accessed using any operating system capable of running web browser software, including Windows 98
SE, Windows ME, Windows 2000, and Windows XP.

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DSL-300T ADSL Modem User’s Guide

Web Browser

Any common web browser can be used to configure the Modem using the web configuration management
software. The program is designed to work best with more recently released browsers such as Opera, Microsoft
Internet Explorer® version 5.0, Netscape Navigator® version 4.7, or later versions. The web browser must have
JavaScript enabled. JavaScript is enabled by default on many browsers. Make sure JavaScript has not been
disabled by other software (such as virus protection or web user security packages) that may be running on your
computer.

Ethernet Port (NIC Adapter)

Any computer that uses the Modem must be able to connect to it through the Ethernet port on the Modem. This
connection is an Ethernet connection and therefore requires that your computer be equipped with an Ethernet
port as well. Most notebook computers are now sold with an Ethernet port already installed. Likewise, most fully
assembled desktop computers come with an Ethernet NIC adapter as standard equipment. If your computer does
not have an Ethernet port, you must install an Ethernet NIC adapter before you can use the Modem. If you must
install an adapter, follow the installation instructions that come with the Ethernet NIC adapter.

Additional Software

It may be necessary to install software on your computer that enables the computer to access the Internet.
Additional software must be installed if you are using the device a simple bridge. For a bridged connection, the
information needed to make and maintain the Internet connection is stored on another computer or gateway
device, not in the Modem itself.

If your ADSL service is delivered through a PPPoE, PPPoA or IPoA connection, the information needed to
establish and maintain the Internet connection can be stored in the Modem. In this case, it is not necessary to
install software on your computer. It may however be necessary to change some settings in the device, including
account information used to identify and verify the connection.

All connections to the Internet require a unique global IP address. For bridged connections, the global IP settings
must reside in a TCP/IP enabled device on the LAN side of the bridge, such as a PC, a server, a gateway device
such as a router or similar firewall hardware. The IP address can be assigned in a number of ways. Your network
service provider will give you instructions about any additional connection software or NIC configuration that
may be required.

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DSL-300T ADSL Modem User’s Guide

Modem Features

The DSL-300T ADSL Modem utilizes the latest ADSL enhancements to provide a reliable Internet portal
suitable for most small to medium sized offices. DSL-300T advantages include:

• PPP (Point-to-Point Protocol) Security – The DSL-300T ADSL Modem supports PAP (Password
Authentication Protocol) and CHAP (Challenge Handshake Authentication Protocol) for PPP connections.

• DHCP Support – Dynamic Host Configuration Protocol automatically and dynamically assigns al LAN IP
settings to each host on your network. This eliminates the need to reconfigure every host whenever changes
in network topology occur.

• TCP/IP (Transfer Control Protocol/Internet Protocol) – The DSL-300T supports TCP/IP protocol, the
language used for the Internet. It is compatible with access servers manufactured by major vendors.

• ATM (Asynchronous Transfer Mode) – The DSL-300T supports Bridged Ethernet over ATM (RFC1483),
IP over ATM (RFC1577) and PPP over ATM (RFC 2364).

• Precise ATM Traffic Shaping – Traffic shaping is a method of controlling the flow rate of ATM data cells.
This function helps to establish the Quality of Service for ATM data transfer.

• G.hs (Auto-handshake) – This allows the Modem to automatically choose either the G.lite or G.dmt ADSL
connection standards.

• High Performance – Very high rates of data transfer are possible with the Modem. Up to eight Mbps
downstream bit rate using the G.dmt.

• Easy Installation – The DSL-300T uses a web-based graphical user interface program for convenient
management access and easy set up. Any common web browser software can be used to manage the Modem.

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DSL-300T ADSL Modem User’s Guide

Standards Compatibility and Compliance

The DSL-300T complies with or is compatible with the following standards as recognized by their respective
agencies.

• ITU G.992.2 (G.lite “Splitterless ADSL”) compliant

• ITU-T Rec. I.361 compliant

• RFC 791 Internet Protocol compliant

• RFC 792 UDP compliant

• RFC 1334 PPP Authentication Protocol compliant

• RFC 1483 IP over AAL5/ Bridged Ethernet over AAL5 compliant

• RFC 1557 Classical IP over ATM (IPoA) compliant

• RFC 1661 Point to Point Protocol (PPP) compliant

• RFC 1877 Automatic IP assignment compliant

• RFC 1994 Challenge Handshake Authentication Protocol compliant

• Supports RFC 2131 and RFC 2132 DHCP functions including: automatic assignment of IP address, use of

subnet mask and default gateway and provision of DNS server address for all hosts

• RFC 2364 PPP over ATM compliant (PPPoA) compliant

• RFC 2516 PPP over Ethernet compliant (PPPoE) compliant

• RFC 2684 Bridged/Routed Ethernet over ATM compliant

• Embedded management agent accessed via web browser

• Supports DHCP for up to 253 hot connections

• Supports ATM Forum UNI 3.1/4.0

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DSL-300T ADSL Modem User’s Guide

Packing List

Open the shipping carton and carefully remove all items. In addition to this User's Guide, ascertain that you have:

• One DSL-300T ADSL Modem

• One Quick Installation Guide

• One twisted-pair telephone cable used for ADSL connection

• One straight-through Ethernet cable

• One AC power adapter suitable for your electric service

• An Installation CD containing this User’ s Manual

Front Panel Display

Place the Modem in a location that permits an easy view of the LED indicators on the front panel.
The LED indicators on the front panel include the Power, Status, ADSL Link/Act, and Ethernet Link/Act.

The ADSL and Ethernet indicators monitor link status and activity (Link/Act).

Power

Status

ADSL: Link/Act

Ethernet: Link/Act

Steady green light indicates the unit is powered on. When the device is
powered off this remains dark.

Lights steady green during power on self-test (POST). Once the connection
status has been settled, the light will blink green. If the indicator lights steady
green after the POST, the system has failed and the device should be
rebooted.

Steady green light indicates a valid ADSL connection. This will light after the
ADSL negotiation process has been settled. A blinking green light indicates
activity on the WAN (ADSL) interface.

A solid green light indicates a valid link on startup. This light will blink when
there is activity currently passing through the Ethernet port.

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DSL-300T ADSL Modem User’s Guide

connect ADSL

Power cord

Rear Panel Connections

All cable connections to the Modem are made at the rear panel. Connect the power adapter here to power on the
Modem. Use the Reset button to restore the settings to the factory default values (see Factory Reset Button in the
next chapter for instructions on using the reset button).

ADSL port,

cable here

Factory

Reset

button

Ethernet

port,

connect

Ethernet

cable here

connects

here

Note

The Modem may be rebooted by disconnecting and then reconnecting the power.

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DSL-300T ADSL Modem User’s Guide

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Hardware Installation

The DSL-300T maintains two interfaces and provides a bridge between two networks. An Ethernet port connects
to a computer or Ethernet LAN and an ADSL port provides the connection to the Internet and the Wide Area
Network. Place the Modem in a location where it can be connected to the various devices as well as to a power
source. The Modem should not be located where it will be exposed to moisture or excessive heat. Make sure the
cables and power cord are placed safely out of the way so they do not create a tripping hazard. As with any
electrical appliance, observe common sense safety procedures.

The access point can be placed on a shelf or desktop, ideally you should be able to see the LED indicators on the
front if you need to view them for troubleshooting.

Power on Modem

CAUTION: The Modem must be used with the power adapter included with the

device.

To power on the Modem:

1. Insert the AC Power Adapter cord into the power receptacle located on the rear panel of the Modem and
plug the adapter into a suitable nearby power source.

2. You should see the Power LED indicator light up and remain lit. The Status LED should light solid green
and begin to blink after a few seconds.

3. If the Ethernet port is connected to a working device, check the Ethernet Link/Act LED indicators to make
sure the connection is valid. The Modem will attempt to establish the ADSL connection, if the ADSL line is
connected and the Modem is properly configured this should light up after several seconds. If this is the first
time installing the device, some settings may need to be changed before the Modem can establish a
connection.

Factory Reset Button

The Modem may be reset to the original factory default settings by depressing the reset button for a few seconds
while the device is powered on. Use a ballpoint or paperclip to gently push down the reset button. Remember
that this will wipe out any settings stored in flash memory including user account information and LAN IP
settings. The factory default IP address of the Modem is 192.168.1.1 and the subnet mask is 255.255.255.0, the
default management Username is admin and the default Password is admin.

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DSL-300T ADSL Modem User’s Guide

Network Connections

Network connections are provided through the ADSL port and the Ethernet port on the back of the Modem. See
the Rear Panel diagram above and the illustrations below for examples.

Connect ADSL Line

Use the ADSL cable included with the Modem to connect it to a telephone wall socket or receptacle. Plug one
end of the cable into the ADSL port (RJ-11 receptacle) on the rear panel of the Modem and insert the other end
into the RJ-11 wall socket. If you are using a low pass filter device, follow the instructions included with the
device or given to you by your service provider. The ADSL connection represents the WAN interface, the
connection to the Internet. It is the physical link to the service provider’s network backbone and ultimately to the
Internet.

Connect Modem to Ethernet

The Modem may be connected to a single computer or Ethernet device through the 10BASE-TX Ethernet port
on the rear panel. Any connection to an Ethernet concentrating device such as a switch or hub must operate at a
speed of 10/100 Mbps only. When connecting the Modem to any Ethernet device that is capable of operating at
speeds higher than 10Mbps, be sure that the device has auto-negotiation (NWay) enabled for the connecting port.

Note

Use standard twisted-pair cable with RJ-45 connectors. The RJ-45 port on the Modem is a crossed port (MDI-X).
Follow standard Ethernet guidelines when deciding what type of cable to use to make this connection. When
connecting the Modem directly to a PC or server use a normal straight-through cable. You should use a crossed
cable when connecting the Modem to a normal (MDI-X) port on a switch or hub. Use a normal straight-through
cable when connecting it to an uplink (MDI-II) port on a hub or switch.

The rules governing Ethernet cable lengths apply to the LAN to Modem connection. Be sure that the cable
connecting the LAN to the Modem does not exceed 100 meters.

In order to connect the Modem to an Ethernet LAN, it is necessary to install
3rd-party PPP connection software on any system used to access the Internet.

Computer to Modem Connection

Connect the Modem
directly to a
10/100BASE-TX
Ethernet port on a PC
or notebook computer
using the Ethernet
cable provided as
shown in this diagram.

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DSL-300T ADSL Modem User’s Guide

If you wish to reserve the

uplink port on the switch or

hub for another device,

connect to any on the other

X ports (1x, 2x, etc.)

Hub or Switch to Modem Connection

Connect the Modem to an uplink port (MDI-II) on an Ethernet hub or switch with a straight-through cable as
shown in the diagram below:

MDI­with a crossed cable.

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