D-Link DI-1750 User manual

DI-1750
Router
Installation Guide
Rev. 01 (April 2003)
RECYCLABLE

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2
LIMITED WARRANTY
D-Link Systems, Inc. ( D-Link”)provides this limited warrantyfor its product onlyto the person or entitywho originallypurchased
the product from D-Link or its authorized reseller or distributor.
Limited Hardware Warranty: D-Link warrants that the hardware portion of the D-Link productsdescribed below ( Hardware”)
will be free from material defects in workmanship and materials from the date of original retail purchase of the Hardware, for the
period set forth below applicable to the product type ( WarrantyPeriod”)if the Hardware is used and serviced in accordance with
applicable documentation; provided that acompleted Registration Card is returned to an Authorized D-Link Service Office within
ninety(90) daysafter the date of original retail purchase of the Hardware. Ifacompleted Registration Card is not received byan
authorized D-Link Service Office within such ninety(90) period, then the WarrantyPeriod shall be ninety(90) daysfrom the date
of purchase. Product Type Warranty Period
Product One (1) Year
Power Supplies and Fans One (1) Year
Spare parts and spare kits Ninety(90) days
D-Link’ssole obligation shall be to repair or replace the defective Hardware at no charge to the original owner. Such repair or
replacement will be rendered byD-Link at an Authorized D-Link Service Office. The replacement Hardware need not be new or of
an identicalmake,model or part; D-Link mayin its discretion mayreplace the defective Hardware (or anypart thereof) with any
reconditioned product that D-Link reasonablydetermines is substantiallyequivalent (or superior) in all materialrespectsto the
defective Hardware. The WarrantyPeriod shall extend for an additional ninety(90) daysafter anyrepaired or replaced Hardware is
delivered. Ifamaterial defect is incapable of correction, or if D-Link determines in its sole discretion that it is not practical torepair
or replace the defective Hardware, the price paid bythe original purchaser for the defective Hardware will be refunded byD-Link
upon return to D-Link of the defective Hardware. All Hardware (or part thereof) that is replaced byD-Link, or for which the
purchase price is refunded, shall become the propertyof D-Link upon replacement or refund.
Limited Software Warranty: D-Link warrants that the software portion of the product ( Software”)will substantiallyconform to D-
Link’sthen current functional specifications for the Software, as set forth in the applicable documentation, from the dateof original
deliveryof the Software for aperiod of ninety(90) days( WarrantyPeriod”), if the Software isproperlyinstalled on approved
hardware and operated as contemplated in its documentation. D-Link further warrants that, during the WarrantyPeriod, the
magnetic media on which D-Link delivers the Software will be free of physical defects. D-Link’ssole obligation shall be toreplace
the non-conforming Software (or defective media) with software that substantiallyconforms to D-Link’sfunctional specifications
for the Software. Except as otherwise agreed byD-Link in writing,the replacement Software is provided onlyto the original
licensee, and is subject tothe terms and conditions of the license granted byD-Link for the Software.The WarrantyPeriod shall
extend for an additional ninety(90) daysafter anyreplacement Software isdelivered. Ifamaterial nonconformance 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 bythe original licensee for the non-conforming Software will be refunded byD-Link; provided that the non-conforming
Software (and all copies thereof) is first returned to D-Link. The license granted respecting anySoftware for which arefund is given
automaticallyterminates.
What You Must Do For Warranty Service:
Registration Card. The Registration Card provided at the back of this manual must becompleted and returned to an Authorized D-
Link Service Office for each D-Link product within ninety(90) daysafter the product is purchased and/or licensed. The
addresses/telephone/fax list of the nearest Authorized D-Link Service Office is provided in the back of this manual. FAILURE TO
PROPERLYCOMPLETE AND TIMELYRETURN THE REGISTRATION CARD MAY AFFECT THE WARRANTY FOR
THIS PRODUCT.
Submitting AClaim. Anyclaim under this limited warrantymust be submitted in writing before the end of the WarrantyPeriod to
an Authorized D-Link Service Office. The claim must include awritten description of the Hardware defect or Software
nonconformance in sufficient detail to allow D-Link to confirm the same. The original product owner must obtain aReturn Material
Authorization (RMA) number from the Authorized D-Link Service Office and, if requested, provide written proof of purchase of the

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3
product (such as acopyof the dated purchaseinvoice for the product) before the warrantyservice is provided. After an RMA
number is issued, the defective product must be packaged securelyin the original or other suitable shipping package to ensure that it
will not be damaged in transit, and the RMA number must be prominentlymarked on the outside of the package. The packaged
product shall be insured and shipped to D-Link,with all shipping costs prepaid. D-Link mayrejector return anyproduct that is not
packaged and shipped in strict compliance with the foregoing requirements, or for which an RMAnumber is not visible from the
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that is not packaged and shipped in accordance with the foregoing requirements, or that is determined byD-Link not to be defective
or non-conforming.
What Is Not Covered?
This limited warrantyprovided byD-Link does not cover: Products that have been subjected to abuse, accident, alteration,
modification, tampering,negligence, misuse, faultyinstallation, lack of reasonable care, repair or service in anywaythat 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; and Anyhardware, software, firmware or other products or services provided byanyone other
than D-Link.
Disclaimer of Other Warranties:EXCEPT FOR THE LIMITED WARRANTY SPECIFIED HEREIN, THE PRODUCT IS
PROVIDED AS-IS”WITHOUT ANY WARRANTY OF ANY KIND INCLUDING, WITHOUT LIMITATION, ANY
WARRANTY OF MERCHANTABILITY,FITNESS FOR APARTICULAR PURPOSE AND NON-INFRINGEMENT. IF ANY
IMPLIED WARRANTY CANNOT BE DISCLAIMED INANY TERRITORY WHERE APRODUCT ISSOLD, THE
DURATION OF SUCH IMPLIED WARRANTY SHALL BE LIMITED TO NINETY (90) DAYS. EXCEPT AS EXPRESSLY
COVERED UNDER THE LIMITED WARRANTY PROVIDED HEREIN, THE ENTIRERISK AS TO THE QUALITY,
SELECTION AND PERFORMANCE OF THE PRODUCT IS WITH THE PURCHASER OF THE PRODUCT.
Limitation of Liability:TO THE MAXIMUMEXTENT PERMITTED BY LAW, D-LINK IS NOT LIABLE UNDER ANY
CONTRACT, NEGLIGENCE, STRICT LIABILITY OR OTHER LEGALOR EQUITABLETHEORY FOR ANY LOSS OF USE
OF THE PRODUCT, INCONVENIENCE OR DAMAGES OF ANY CHARACTER, WHETHER DIRECT, SPECIAL,
INCIDENTALOR CONSEQUENTIAL(INCLUDING, BUT NOT LIMITED TO, DAMAGES FOR LOSS OF GOODWILL,
WORK STOPPAGE, COMPUTER FAILURE OR MALFUNCTION, 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 THISLIMITED WARRANTY, EVEN IFD-LINK HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
DAMAGES. THE SOLEREMEDY FOR ABREACH OF THE FOREGOING LIMITED WARRANTY ISREPAIR,
REPLACEMENT OR REFUND OF THE DEFECTIVE OR NON-CONFORMING PRODUCT.
GOVERNING LAW: This Limited Warrantyshall be governed bythe 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
warrantylasts, sothe foregoing limitations and exclusions maynot apply.This limited warrantyprovides specific legal rights and
the product owner mayalso have other rights which vary Trademarks
Copyright 1999 D-Link Corporation. Contents are subject to change without prior notice. D-Link is aregistered trademark of D-
Link Corporation/D-Link Systems, Inc. All other trademarks belong to their respective proprietors.
Copyright Statement
No part of this publication maybe reproduced inanyform or byanymeans or used to make anyderivative such as translation,
transformation, or adaptation without permission from D-Link Corporation/D-Link Systems Inc.,asstipulated bythe United States
Copyright Act of 1976.

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Table of Contents
Introduction ____________________________________________________________________________ 6
Overview ____________________________________________________________________________ 6
Key Features _________________________________________________________________________ 6
Flexibility __________________________________________________________________________ 6
Integrated voice and data networking_____________________________________________________ 6
Security____________________________________________________________________________ 6
Quality-Of -Service___________________________________________________________________ 6
Product Specifications: ___________________________________________________________________ 7
Hardware Features: ___________________________________________________________________ 7
Feature_____________________________________________________________________________ 7
Memory: ___________________________________________________________________________ 7
Physical interface (Default) ____________________________________________________________ 7
WAN Interface Cards _________________________________________________________________ 7
Voice Interface Cards _________________________________________________________________ 7
Software Features: ____________________________________________________________________ 7
Link layer protocol ___________________________________________________________________ 7
Network layer protocol ________________________________________________________________ 8
Routing protocol _____________________________________________________________________ 8
Security____________________________________________________________________________ 8
AAA ______________________________________________________________________________ 8
Firewall____________________________________________________________________________ 8
VPN_______________________________________________________________________________ 8
Qualityof Service (QoS) ______________________________________________________________ 8
Network reliability ___________________________________________________________________ 8
Management ________________________________________________________________________ 8
Voice application ____________________________________________________________________ 8
Mechanical design: ______________________________________________________________________ 9
External Outlook______________________________________________________________________ 9
Power: ______________________________________________________________________________ 9
Environmental specifications: ___________________________________________________________ 9
Identifying External Components________________________________________________________ 9
Front Panel _________________________________________________________________________ 9
Rear Panel_________________________________________________________________________ 10
Router Installation______________________________________________________________________ 11
Before you Begin_____________________________________________________________________ 11
Unpacking the Router_________________________________________________________________ 11
Safety Warnings & Recommendations___________________________________________________ 11
Tools and equipments required for installation____________________________________________ 11
Installing the Router Case _____________________________________________________________ 12
Installing the Router Case on Table _____________________________________________________ 12

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5
Installing the Router Case in a 19”Rack _________________________________________________ 12
Connecting Power to the Router________________________________________________________ 12
Recommended AC power socket _______________________________________________________ 12
Connecting AC power cord ___________________________________________________________ 12
Connecting to the Console & Auxiliary Port ofthe Router __________________________________ 13
Console Port _______________________________________________________________________ 13
AUX Port—AuxiliaryPort____________________________________________________________ 14
Connecting the Fast Ethernet Interface __________________________________________________ 15
Installing WAN Interface Cards ________________________________________________________ 16
Interface Combination Matrix :-________________________________________________________ 16
Troubleshooting________________________________________________________________________ 18
ProblemPowering Up the DI-1750 Router _______________________________________________ 18
None of the LEDs are ON when you power up the router:-___________________________________ 18
ProblemConfiguring Router through Console port________________________________________ 18
Nothing is displayed on terminal:- ______________________________________________________ 18
ProblemsConnecting WIC/VIC Cards __________________________________________________ 18
Router does not detect the WIC/VIC cards:- ______________________________________________ 18
Router reboots after inserting WIC/VIC:- ________________________________________________ 18

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Introduction
Congratulations on your purchase of D-Link DI-1750 Modular Multi-Service Access Router. D-Link DI-1750 router offers
an inexpensive yet acomplete Internetworking solution with Voice support for your Corporate office, Business or
Enterprise.
Overview
Today LAN, WAN and Internet connectivity are being rapidly accepted as the most used media for business. Agrowing
percentage of business transactions, including data &voice communications, are being carried on Intranets and the Internet.
At the same time, LAN and WAN technologies are evolving rapidly to meet the ever growing demand for faster connections,
higher capacity and more robust security with sophisticated policy controls. Interconnecting the company through Intranet
and Internet is becoming a competitive necessity for SOHO businesses and Enterprise branch offices.
Such Enterprise &SOHO businesses also require solutions that provide reliable, secure, high-performance
access to their private WANs and the Internet, with flexibilityto upgrade to newservices easilyin the near
future. Service providers are interested in meeting this demand for new network services, to capitalize on
opportunities in the growing SOHO & Enterprise market.
D-Link DI-1750 modular router provides acost-effective solution for small and medium-sized businesses and Enterprise
small branch offices. DI-1750 delivers aflexible, scalable, integrated data access solution supporting multiple types of WAN
interfaces providing a tailored access solution for both data & voice.
The D-Link DI-1750 Internetwork Operating System,includes Routing, Firewall, and Virtual Private Network (VPN)
functions (including GRE, L2TP)and provides IPSec (IPSecurity), thus guaranteeing the security of WAN network in the
Internet environment.
For voice applications, DI-1750 routers supports 3different modules including Foreign Exchange Station (FXS) interface
which connects directlyto astandard analog telephone, Foreign Exchange Office (FXO) interface allowing an analog
connection to be directed at the PSTN's central office or to astation interface on aprivate branch exchange (PBX) and, Ear
&Mouth (E&M) interface allowing analog connection to be directed at the E&M station on aprivate branch exchange
(PBX).
Key Features
Flexibility
• InterchangeableWAN interface cards enableeasyadditions or changes in WAN technologies without aforklift
upgrade of the entire platform.
• Modular data and voice slots enable users to tailor data and voice services as needed
• Supports different cards, such as Fast Ethernet, Asynchronous serial port, sync/async serial port, ISDN BRI, ISDN
PRI/E1 etc.
Integrated voice and data networking
• Reduces long-distance toll charges byallowing the data network to carry interoffice voice and fax traffic.
• Works with existing handsets, keyunits, and PBXs, eliminating the need for a costlyphone-equipment upgrade.
• Provides a path to migrate to IP telephony.
Security
• Support Firewall/VPN Function.
Quality-Of -Service
• Allocates WAN bandwidth to priority applications for improved performance.
• End-to-end qualityof service (QoS).
• Policy Routing.

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Product Specifications:
Hardware Features:
Feature Detailed Description
Chassis Rack mount 1U size
RISC Processor Motorola MPC860T at 50MHz
Memory:
EEPROM 512K Bytes
Flash memory 8MB
SDRAM 64MB
Physical interface
(Default)
10/100M Fast Ethernet
port One port RJ-45 Supports IEEE802.3u, IEEE802.3
Console port One port
RJ-45 with RS-232 interface - Asynchronous serial
Auxiliaryport One port
RJ-45 with RS-232 interface - Asynchronous serial
Modular slots Two slots
Supports WAN interface cards (WICs) and Voice interface cards (VICs)
WAN Interface Cards
One port E1 DB-15
One E1/ISDN PRI (30B+D) Supports G.703 / G.704
One ISDN BRI S/T One ISDN BRI port (S/T interface, requires external NT-1)
RJ-45 Support ITU I.430, Q.921, Q.931
One serial, async, and sync
(T1/E1) DB-60 One serial port provides serial connections to remote sites or legacyserial
network devices such as Synchronous Data Link Control (SDLC)
Supports V.24/V.28, RS232-D X.21bit, V.35, RS422/RS449
Two serial, async, and
sync (T1/E1) DB-60
Two serial port provides serial connections to remote sites or legacyserial
network devices such as Synchronous Data Link Control (SDLC)
Supports V.24/V.28, RS232-D X.21bit, V.35, RS422/RS449
One Ethernet + one serial,
async, and sync (T1/E1) RJ-45 Supports IEEE802.3u, IEEE802.3
Supports V.24/V.28, RS232-D X.21bit, V.35, RS422/RS449
One/Two port Ethernet RJ-45 10Mbps Ethernetport
Supports IEEE802.3u, IEEE802.3
8 ports asynchronous serial
DB68 Supports V.24/V.28, RS232-D
Voice Interface Cards
Two ports FXS RJ-11
A Foreign Exchange Station (FXS) interface connects directlyto a
standard telephone; fax machine, or similar device
Two ports FXO RJ-11
Foreign Exchange Office (FXO) allows an analog connection to be
directed at the PSTN's central office or to a station interface on a private
branch exchange (PBX).
Two ports E&M RJ-11
Supports 2 and 4 wire, E&M signaling types I, II, III, V
Software Features: Feature Detailed Description
Link layer protocol Frame relay
X.25
LAPB
PPP
PPPoE
HDLC

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SLIP
ISDN (PRI/BRI)
LLC2
SDLC
DLSW-SSP
VLAN
Network layer protocol ARP
ARP Proxy
DNS
NAT
IP Filtering
ICMP
IGMP
DHCP client
NHRP
Routing protocol Static routing
Policy-based routing
RIP v1, v2
OSPF v1, v2
BEIGRP (compatible with Cisco EIGRP)
BGP-4
DDR
IP Multicasting
DVMRP
PIM-DM/SM
Security
AAA Radius
PAP
CHAP
TACAS+
Firewall ACL
NAT
VPN L2TP
GRE
IPSec
Quality of Service (QoS) FIFO
PQ
CQ
CBWFQ
WFQ
RED
WRED
RTS
RSVP
Network reliability HSRP
Port backup
Management SNMPv1, v2, v3
RMON
Telnet
Voice application Voice over IP
FAX over IP
H.323
G.729/G.729A/G.729B
G.723.1/G.723.1A
G.726
G.727
G.711
Gatekeeper client

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Mechanical design:
External Outlook
Dimension: 445mm x 310mm x 45mm (L x Wx H)
Power: Feature Detailed Description
Power input 110 ~ 264VAC
Power frequency 47 ~ 63Hz
Power dissipation Max. 50W
Environmental specifications:
Feature Detailed Description
Operating Temperature 0 ~ 40°C
Storage Temperature -20 ~ 65°C
Operating Humidity 10% ~ 85%, noncondensing
Identifying External Components
D-Link DI-1750 Router is shipped with the following standard configuration which includes a 10/100Mbps Fast Ethernet
LAN Port, a Console Port and an AUX Port.
Table of Standard Configuration Ports of DI-1750:
Name Features
Fast Ethernet Port Rate: 10/100M auto-negotiation, STP (RJ45) port, with Active, Link &
100Mbps indicator LED’s
Console Port Rate: 1200bps—115200bps, RJ45 interface, with Active indicator light
AUX Port Rate: 1200bps—115200bps, RJ45 interface, with Active indicator light
Besides, there are two Network/Voice interface card slots, a power plug, a power On/Off switch, a ground pole and a vent for
proper air circulation to avoid overheating.
Front Panel
The following figure shows the front panel of the D-Link DI-1750:
The following table describes the components on the Router’s front panel:
Serial No.
Name
Description
1 PWR
Light ON indicates that the Router is powered ON
2 SYS Light ON indicates that the system has started successfully
3 S1 Light ON indicates that there is an interface card in first slot
4 S2 Light ON indicates that there is an interface card in second slot

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Rear Panel
The following is the illustration of the Rear Panel:
The following table describes the components on the Router’s rear panel:
ID No.
Name Description
1 Power plug AC110-264V power input
2 Power supply
screw Secures the Power Supplyto Router Chassis
3 Power switch
Press upwards to turn the Router ON, press downwards to turn it
OFF
4 Ground point
Router Grounding point. Needs to be properlygrounded
5 CON Console Port with LED. Blinking LED indicates that there’s data
transmit/receive on the Console Port
6 AUX AuxiliaryPort with LED. Blinking LED indicates that there’s data
transmit/receive on the AUX Port
7 100M The LED glows Green when the 10/100Mbps LAN port operates at
100Mbps
8 LINK This LED glows green when a valid connection is established
between the LAN port and Hub/Switch via a twisted-pair CAT5 cable
9 ACT Blinking LED indicates that there is data transmit/receive on the
Ethernet port
10 TP Connect the 10/100Mbps LAN through this portusing twisted-pair
CAT5 cable
11 SLOT0 Standard configuration card (include a 10/100Mbps Ethernet port, a
Console port and a AUX port byDEFAULT)
12 SLOT1 Supports Single WAN Interface card or Voice Interface Card. For
details refer Interface Combination matrix page.
13 SLOT2 Supports single WAN Interface Card or Voice Interface Card.
For details refer Interface Combination matrix page.

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Router Installation
Before you Begin
Warning: Onlytrained & qualified technician is allowed to install & maintain the equipment
This Chapter instructs you on how to install D-Link DI-1750 Series Router.
The Chapter is divided into following sections:-
• Unpacking the Router.
• SafetyWarnings and Recommendations.
• Tools and equipments required for installation.
• Installing the Router Case.
• Connecting Power to the Router
• Connecting to the Console & AuxiliaryPort of the Router.
• Connecting the Fast Ethernet interface.
• Connecting WAN and Voice Interface Cards.
Unpacking the Router
Before you proceed further, please check all items you received with your DI-1750 Router with this list to make sure the
package is complete. The complete package should include:
• One DI-1750 Router.
• One 100~240V AC power cord.
• One Console Cable (DRC-0001) for console connection.
• Rack mount kit including six screws and two mounting brackets.
• Installation Guide.
If anyitem is found missing or damaged, please contact your local D-Link Reseller.
Safety Warnings & Recommendations
Follow these guidelines to ensure general safety:
1. Keep the environment clear, dry, safe and dust-free during and after installation.
2. Avoid pulling power supplycable and interface cable vigorously.
3. Ensure that the AC mains power is conditioned using a Standard Power Surge suppressor.
4. It is recommended to use a UPS for continuous uninterrupted power.
5. Wear safetyglasses when working under anyconditions that might be hazardous to your eyes.
6. Do not touch the uncovered telephone-network cable directly.
7. Do not insert telephone-network cable connector to the Ethernet/Fast Ethernet port.
8. Do not work on the system or connect or disconnect cables during periods of lightning activity.
9. Console, Auxiliary&Ethernet connection is RJ-45 based, therefore before plugging corresponding cable it is
important that you properlycheck the cable type.
10. ISDN and Ethernet Cables are verysimilar to each other. It is important that you use the correct cable for each
connection else your router could get damaged.
Tools and equipments required for installation
Following are the tools required for router installation:-
1. Screwdriver
2. ESD-preventive wrist strap
3. Appropriate connecting cable (the cable required for each card)
4. Console cable
5. Power supplycable
6. Terminal

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Installing the Router Case
The router can be placed on adesktop or mounted in a19”rack, depending upon your need. Regardless of where you place
the router make sure its cable jacks are accessible, LED indicators are visible and its ventilation holes are never blocked.
Installing the Router Case on Table
D-Link DI-1750 router maybe placed on asmooth and secured table.Please check the access of power &communication
cables to the installation workplace.
Note: Do not place anyheavyobject on the router, this maydamage the router.
Installing the Router Case in a 19 Rack
D-Link DI-1750 router can be fixed in a19”rack using brackets provided with the router. When locking the case, ensure the
front panel of the router faces front. As illustrated below:
Note:
The above example illustrates onlyone side of the installation; the other side of the router bracket installation will be at a
corresponding location of the case.
After the bracket is installed, you can install the router on the rack, the operation is illustrated in the following figure:
Connecting Power to the Router
Recommended AC power socket
AThree-pinpower socket with aneutral point connector or aspecial power socket for the computer is recommended. The
neutral point of the power supplysystem in abuilding must be reliablygrounded before connecting the AC power cord of the
router. Normally,the neutral point of the power supplysystem in abuilding will have been grounded during the construction
and wiring.
Connecting AC power cord
1. Confirm that the GND wire is correctlygrounded.
2. Make sure that the power switch of the router is turned off, connect one end of the power cord to the AC input
socket on the router’s rear panel, and connect the other end to the AC outlet.

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3. Switch the power switch of the router to ON position.
4. Check that the PWR LED on the front panel of the router is ON.
Connecting to the Console & Auxiliary Port ofthe Router
There is one Console port and one AUX port on D-Link DI-1750 Router. This section describes the features and usage of
these two ports.
Console Port
Transmission Rate supported is 1200bps-to-115200bps and it has astandard RJ45 Connector, ParityCheck is optional, and
has Flow Control. Adedicated Console cable, DRC-0001,provided with the router is used to connect this port to aterminal
device like VT-100, or tothe serial port of PC, and then use aterminal emulator (such as Windows Hyper terminal software)
to configure &monitor the D-Link DI-1750 Router functions. The communication parameter of the serial port on aPC has to
be set as: Rate: 9600bps rate, eight-bit data bits, one-bit stop bit, no Parity Check bit, and no flow control as shown in Figure :
The RJ-45 connector of the Consoleport is shown in the following figure, the male and female connectors are pin-to-pin
corresponding and the pin numbers 1-8 start from left to right.
The connection between the Console port of D-Link 1750 Router and the terminal device or PC serial port is illustrated as
below:

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The pin details ofthe Console port is given in the following table:
Sr. No.
Name Description
1 CD Carrier Detect
2 RXD Receive
3 DSR Data Send Ready
4 TXD Transmit
5 RTS Request to Send
7 DTR Data Ready
8 SG Signal Ground
The DRC-0001 cable is used to connect the Console port of D-Link DI-1750 Router with the external Consoleterminal
equipment or serial port of PC. One end of the DRC-0001 cable is astandard RJ45 eight-pin connector &the other end is
DB25 and DB9 connector. The RJ45 connector gets connected to the Console port of D-Link DI-1750 series router, the other
end you can choose one from the DB25 or DB9 port according to your serial port on terminal or PC. The pin connection of
the console cable DRC-0001 is showed in the following figure.
AUX Port—Auxiliary Port
The Transmission rate supported byAUX Port is 1200bps-to-115200bps and it has astandard RJ45 Connector, Parity Check
is optional, and has Flow Control. AUX Port can be directlyconnected to an asynchronous modem for remote console
configuration support or as abackup link. The communication parameter of the AUX port can be set as: Rate—115200bps,
eight-bit data bits, one-bit stop bit, no ParityCheck, no hardware Flow Control.
The auxiliarycable, DRC-0011 is used to connect the AUX Port with an external asynchronous modem. One end of the DRC-
0011 cable is astandard RJ45 eight pin connector and the other end is DB25 and DB9 female connector. The RJ45 connector
gets connected tothe AUX Port of the router and on the other end you choose one from DB25 or DB9 according to the
requirement of asynchronous serial port of Modem. The pin connection of the AUX cableDRC-0011 is showed in the
following figure.

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15
Connecting the Fast Ethernet Interface
The Fast Ethernet port of the router provides aSTP (RJ45) interface and ACT, Link, 100Mbps LED indicators. The STP
LAN interface port supports 10/100Mbps auto-negotiation speed. AHub/Switch can be connected through the router’sSTP
Port using a CAT5 UTP/STP cable. The UTP pin numbering is shown in the following figure.
The connection between 10/100Mbps auto-negotiation Ethernet Port and the Hub/Switch is illustrated in the following figure.
UTP Port (twist-pair) pin description table:
Sr. No.
Name Description
1 TPTXD+ Transmit+
2 TPTXD- Transmit-
3 TPRXD+ Receive+
6 TPRXD- Receive-
The UTP Port can be connected to a Hub/Switch through a Category5 twisted-pair cable. The connection is illustrated in the
following figure.
When connecting the DI-1750 Router directlyto Ethernet port of singlehost computer, aUTP cross-over cable can be used.
Thus you can eliminate the Fast-Ethernet Hub/Switch in the connection example above. But, when you need to connect more
than one computer to the router, you must use an Ethernet Hub or switch. The illustration of the UTP cross -over connection is
showed as following:
Note: The color code ofthe twisted-pair cable connection should complywith EIA/TIA 568A/B standard.

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Installing WAN Interface Cards
This section describes how to install WAN interface cards (WICs) and Voice Interface Cards (VICs) in D-Link DI-1750
router. Before performing anyof the following procedures, ensure thatpower supply ofthe router is put OFF and the power
mains cable is removed from the power mains outlet.
Caution: Do not insert anyinterface card into the module slotwhen the router is powered ON or when cable is
connected to the Interface card.
To install an interface card in D-Link DI-1750 router, please follow the steps below:
1. Power OFF the router. To avoid damage due to ESD voltages, channel the router chassis to ground.
2. Remove all network interface cables, including telephone cables, from the rear panel.
3. Use a flat-blade screwdriver to remove the blank filler panel from the slot where you plan to install the card. Save the
filler panel for possible future use.
4. Align the module with the guides in the chassis and slide it gentlyinto the slot.
5. Push the module intoplace until the edge connector is securelyseated in the connector on the motherboard. Ensure
that each of the module’s captive screw lines up with its corresponding hole in the chassis.
6. Secure the captive mounting screws into the holes of the chassis using a flat-blade screwdriver.
7. Please refer the Interface Card Installation Guide for detailed WAN & VIC Interface installation procedure.
8. After completing the hardware installation, please refer the Software Configuration Guide toconfigure the Router
parameters.
Interface Combination Matrix :-
Please refer to the Interface Card Hardware Installation Manual for detailed description of each interface card.
Model Name Description Protocol/Standard
DRW-1T 1 port Serial 1 port Asynchronous/Synchronous
V28/V35 serial interface card. V.24/V.28; RS232-D X.21bis;V.35;
RS422/RS449
DRW-2T 2 port Serial 2 port Asynchronous/Synchronous
V28/V35 serial interface card. V.24/V.28; RS232-D X.21bis;V.35;
RS422/RS449
DRW-1ETH 1 port Ethernet
1 port 10M Ethernet interface card. Ethernet 10BaseT
DRW-2ETH 2 port Ethernet
2 port 10M Ethernet interface card. Ethernet 10BaseT
DRW-1E1T 1 port
Ethernet+1 port
Serial
1 port 10M Ethernet interface plus
1 port Asynchronous/Synchronous
V28/V35 serial interface card.
Ethernet 10BaseT
V.24/V.28; RS232-D
X.21bis;V.35;
RS422/RS449
DRW-8ASY 8 port
Asynchronous 8 port V.28 serial interface card. V.24/V.28; RS232-D

DI-1750 Router
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17
DRW-1B-S/T
1 port ISDN
BRI S/T 1 port ISDN BRI S/T interface card. ITU I.430, Q.921,Q.931
DRW-1B-U 1 port ISDN
BRI U 1 port ISDN BRI U interface.
DRW-1DTU 1 port DDN
Lease Line 1 port DDN Lease Line.
DRW-1CE1 1 port
Channelized E1
1 port E1/ISDN PRI (30B+D)
interface card. G.703/G.704
DRW-2FXS 2 port FXS 2 port telephone interface card.
DRW-2FXO 2 port FXO 2 port trunk line interface card used
to connect to PSTN.
DRW-2E&M 2 port E&M 2 port E&M voice interface card
used to connect to PBX.
Voice Signaling

DI-1750 Router
18
Troubleshooting
This chapter describes some troubleshooting techniques, incase of malfunctioning of DI-1750 router. After each description,
we have provided some instructions to help you to diagnose and resolve the problem. If you are not able to locate source of
problem, contact your local reseller or D-Link support center for further help.
The LED indicators indicate the current operation ofthe Router.The standard configuration indicators on the rear
panel ofthe router case are described in the following table:-
No. Indication Description Remarks
1 100M 100Mbps Ethernet LED indicator LED ON indicates this port operates at
100Mbps.
2 ACT 10/100M Ethernet LED indicates
receiving and transmitting data Blinking LED indicates that there’sdata receive/transmit on the Fast Ethernet port
3 LINK 10/100M Ethernet TP port link
active indicator When valid connection is established between the LAN port and the
Switch/Hub through a CAT5 cable, this
LED indicator will turn ON.
The standard configuration indicators on the front panel ofthe router case are described in the following table:-
Name Description
Power LED ON indicates that the Router is powered ON
SYS LED ON indicates that the system has started successfully
S1 LED ON indicates that there is an interface card in first slot
S2 LED ON indicates that there is an interface card in second slot
ProblemPowering Up the DI-1750 Router
None of the LEDs are ON when you power up the router:-
• Check the AC mains power is turned ON.
• Check Router power switch is turned ON.
• Check whether the power cord is properlyconnected to the Router.
ProblemConfiguring Router through Console port
Nothing is displayed on terminal:-
• Check whether router is powered ON properly.
• Check whether the router console port is properlyconnected to PC serial port.
• Check whether Terminal communication program(Hyperterminal) is configured properly.
ProblemsConnecting WIC/VIC Cards
Router does not detect the WIC/VIC cards:-
• Confirm that the card is properlyinserted in the slot.
• Confirm that the interface is installed in a proper slot please refer to Interface Combination. Matrix for proper slot
configuration.
Router reboots after inserting WIC/VIC:-
• Confirm that the interface card is properlyinserted in the slot.
• Check whether LED indication is proper in the front panel w.r.t. slot.
• The WIC/VIC Interface card might be faulty. Turn OFF router immediatelyand consult your reseller.
• Confirm that the interface is installed in the proper slot please refer to Interface Combination Matrix for proper slot
configuration.

DI-1750 Router
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19
Offices
Australia D-Link Australasia
1 Giffnock Avenue, North Ryde, NSW 2113, Sydney, Australia
TEL: [phone] FAX: [phone]
TOLL FREE (Australia): 1300 766 868
TOLL FREE (New Zealand): 0800-900900
URL: www.dlink.com.au
E-MAIL: [email protected] & [email protected]
Brazil D-Link Brasil Ltda.
Rua Tavares Cabral 102 - Conj. 31 e 33
05423-030 Pinheiros, Sao Paulo, Brasil
TEL: [phone] to 2920 FAX: [phone]
URL: www.dlink.com.br
Canada D-Link Canada
2180 Winston Park Drive, Oakville,
Ontario, L6H 5W1 Canada
TEL: [phone] FAX: [phone]
BBS: 1-965-279-8732 FTP: ftp.dlinknet.com
TOLL FREE: 1-800-354-6522
URL: www.dlink.ca E-MAIL: [email protected]
Chile D-Link South America (Sudam rica)
Isidora Goyenechea 2934
Oficina 702, Las Condes, Santiago, Chile
TEL: [phone] FAX: [phone]
URL: www.dlink.com.cl
China D-Link Beijing
Level 5,Tower W1,The Tower,Oriental Plaza
No.1,East Chang An Ave., Dong Cheng District
Beijing,100738,China
TEL: [phone]/31/32/33
FAX: [phone]
URL: www.dlink.com.cn E-MAIL: [e-mail]
Denmark D-Link Denmark
Naverland 2, DK-2600 Glostrup, Copenhagen, Denmark
TEL: [phone] FAX: [phone]
URL: www.dlink.dk E-MAIL: [email protected]
Egypt D-Link Middle East
7 Assem Ebn Sabet Street, Heliopolis, Cairo, Egypt
TEL: [phone] FAX: [phone]
URL: www.dlink-me.com
E-MAIL: [email protected] & [e-mail]
Finland D-Link Finland
Pakkalankuja 7A, 01510 Vantaa, Finland
TEL: [phone] FAX: [phone]
URL: www.dlink-fi.com
France D-Link France
Le Florilege, No. 2, All e de la Fresnerie,
78330 Fontenay-le-Fleury, France

DI-1750 Router
20
TEL: [phone] FAX: [phone]
URL: www.dlink-france.fr
E-MAIL: [e-mail]
Germany D-Link Central Europe (D-Link Deutschland GmbH)
Schwalbacher Strasse 74, D-65760 Eschborn, Germany
TEL: [phone] FAX: [phone]
BBS: 49-(0) 6192-971199 (analog) & BBS: 49-(0) 6192-971198 (ISDN)
INFO: 00800-7250-0000 (toll free) & HELP: 00800-7250-4000 (toll free)
REPAIR: 00800-7250-8000 & HELP: support.dlink.de
URL: www.dlink.de & E-MAIL: [email protected]
India D-Link India
Plot No.5, Kurla -Bandra Complex Rd., Off Cst Rd.,
Santacruz (East), Mumbai, 400 098 India
TEL: [phone]
FAX: [phone]/8476
URL: www.dlink.co.in
E-MAIL: [email protected] & [email protected]
Italy D-Link Mediterraneo Srl/D-Link Italia
Via Nino Bonnet n. 6/B, 20154, Milano, Italy
TEL: [phone] FAX: [phone]
URL: www.dlink.it E-MAIL: [email protected]
Japan D-Link Japan
10F, 8-8-15 Nishi-Gotanda, Shinagawa-ku, Tokyo 141, Japan
TEL: [phone] FAX: [phone]
URL: www.d-link.co.jp E-MAIL: [email protected]
Netherlands D-Link Benelux
Lichtenauerlaan 102-120, 3062 ME Rotterdam, Netherlands
TEL: [phone] FAX: [phone]
URL: www.d-link-benelux.nl & www.dlink-benelux.be
E-MAIL: [email protected]
Norway D-Link Norway
Karihaugveien 89, 1086 Oslo
TEL: [phone] FAX: [phone]
SUPPORT: 800-10-610 & 800-10-240 (DI-xxx)
URL:www.dlink.no
Russia D-Link Russia
129626 Russia, Moscow, Graphskiy per., 14, floor 6
TEL/FAX: [phone]
URL: www.dlink.ru E-MAIL: [email protected]
Singapore D-Link International
0 1 International Business Park, #03-12 The Synergy,
Singapore 609917
TEL: [phone] FAX: [phone]
E-MAIL: [email protected] URL: www.dlink-intl.com
South Africa D-Link South Africa
Einstein Park II, Block B
102-106 Witch-Hazel Avenue
Highveld Technopark
Centurion, Gauteng, Republic of South Africa