D Link SL2750BT1 Wireless N ADSL2+ 3G USB Router User Manual

Download:
Mirror Download [FCC.gov]
Document ID	2868438
Application ID	O0KKVN4PjfTpG4IL68tcvA==
Document Description	User manual
Short Term Confidential	No
Permanent Confidential	No
Supercede	No
Document Type	User Manual
Display Format	Adobe Acrobat PDF - pdf
Filesize	242.19kB (3027435 bits)
Date Submitted	2016-01-11 00:00:00
Date Available	2016-01-11 00:00:00
Creation Date	2016-01-05 11:23:05
Producing Software	Adobe PDF Library 15.0
Document Lastmod	2016-01-07 18:05:50
Document Title	User Manual
Document Creator	Acrobat PDFMaker 15 Word 版
Document Author:	hzf

DSL-2750B
User Manual
ii
Federal Communication Commission Interference 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 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 the equipment
off and on, the user is encouraged to try to correct the interference by one 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.
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.
FCC Caution: Any changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate this equipment.
IMPORTANT NOTE:
FCC Radiation Exposure Statement:
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum
distance 20cm between the radiator & your body.
This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.
Table of Contents
Safety Precautions ............................................................................................ 1
Introduction ........................................................................................................ 1
2.1 LEDs and Interfaces ................................................................................ 2
2.2 System Requirements ............................................................................. 4
2.3 Features................................................................................................... 4
2.4 Standards Compatibility and Compliance ............................................... 5
Hardware Installation......................................................................................... 5
3.1 Choosing the Best Location for Wireless Operation ............................... 5
3.2 Connecting the Router............................................................................. 6
About the Web Configuration ............................................................................ 7
4.1 Preparation Before Login......................................................................... 7
4.2 Logging In to the Router .......................................................................... 8
4.2.1
First-Time Login .......................................................................... 8
4.3 Setup ....................................................................................................... 9
4.3.1
Wizard ......................................................................................... 9
4.3.2
Internet Setup............................................................................ 18
4.3.3
Wireless Connection ................................................................. 24
4.3.4
Local Network ........................................................................... 29
4.3.5
Time and Date ........................................................................... 31
4.3.6
Print Server ............................................................................... 32
4.3.7
Logout ....................................................................................... 32
4.4 Advanced ............................................................................................... 33
4.4.1
Wireless Settings ...................................................................... 33
4.4.2
Port Forwarding......................................................................... 42
4.4.3
Port Triggering........................................................................... 44
4.4.4
DMZ........................................................................................... 46
4.4.5
Parental Control ........................................................................ 46
4.4.6
Filtering Options ........................................................................ 50
4.4.7
DNS ........................................................................................... 54
4.4.8
Dynamic DNS............................................................................ 55
4.4.9
Storage Service ......................................................................... 56
DSL-2750B User Manual
4.4.10 Multicast .................................................................................... 58
4.4.11 Network Tools............................................................................ 59
4.4.12 Routing ...................................................................................... 71
4.4.13 RIP ............................................................................................ 74
4.4.14 MultiNat ..................................................................................... 74
4.4.15 Schedules ................................................................................. 75
4.4.16 Logout ....................................................................................... 76
4.5 Maintenance .......................................................................................... 77
4.5.1
System ...................................................................................... 77
4.5.2
Firmware Update....................................................................... 78
4.5.3
Access Controls ........................................................................ 78
4.5.4
Diagnostics................................................................................ 81
4.5.5
System Log ............................................................................... 82
4.5.6
Logout ....................................................................................... 82
4.6 Status ..................................................................................................... 83
4.6.1
Device Info ................................................................................ 83
4.6.2
Wireless Clients ........................................................................ 84
4.6.3
DHCP Clients ............................................................................ 84
4.6.4
Logs........................................................................................... 85
4.6.5
Statistics .................................................................................... 86
4.6.6
Route info .................................................................................. 87
4.6.7
Logout ....................................................................................... 87
FAQs................................................................................................................ 88
1 Safety Precautions
Follow the following instructions to prevent the device from risks and damage caused by fire or electric power:
 Use volume labels to mark the type of power.
 Use the power adapter packed within the device package.
 Pay attention to the power load of the outlet or prolonged lines. An overburden power outlet or damaged lines and plugs may cause electric shock or fire accident.
Check the power cords regularly. If you find any damage, replace it at once.
 Proper space left for heat dissipation is necessary to avoid damage caused by overheating to the device. The long and thin holes on the device are designed for
heat dissipation to ensure that the device works normally. Do not cover these heat dissipation holes.
 Do not put this device close to a place where a heat source exists or high temperature occurs. Avoid the device from direct sunshine.
 Do not put this device close to a place where it is over damp or watery. Do not spill any fluid on this device.
 Do not connect this device to any PCs or electronic products, unless our customer engineer or your broadband provider instructs you to do this, because any wrong
connection may cause power or fire risk.
 Do not place this device on an unstable surface or support.
2 Introduction
The DSL-2750B is a highly integrated ADSL2/2+ Integrated Access Device. It provides DSL uplink, Ethernet LAN and wireless LAN services. The wireless LAN is
complied with the IEEE802.11b/g /n standards and supports 2T2R. It is usually prefered to provide high access performance applications for the individual users, the
SOHO, the small enterprise and so on.
DSL-2750B User Manual
2.1 LEDs and Interfaces
Front Panel
The LED indicators are as follows from left to right: Power, LAN1/2/3/4, WLAN,
USB, DSL, Internet. The WPS indicator is on the side panel.
The following table describes the LEDs of the device.
LED
Color
Status
Description
Off
The power is off.
Green
The power is on and the initialization is
On
normal.
Power
On
The device is initiating.
Red
Blinks
The firmware is upgrading.
Off
No LAN link.
Data is being transmitted through the LAN
LAN 1/2/3/4 Green
Blinks
interface.
On
The connection of LAN interface is normal.
Data is transmitted through the WLAN
Blinks
interface.
WLAN
Green
On
The connection of WLAN interface is normal.
Off
The WLAN connection is not established.
The connection of USB flash disk has
On
established.
USB
Green
Blink
Data is being transmitted.
DSL
Green
Green
Internet
No signal is detected.
Off
Blinks
On
Initial self-test is failed.
The device is detecting itself.
Initial self-test of the unit has passed.
The device is under the Bridge mode, DSL
connection is not present, or the power is off.
IP is connected and no traffic is detected.
The device is attempted to become IP
connected, but failed.
WPS negotiation is enabled, waiting for the
clients.
Device is ready for new WPS to setup.
Off
On
Red
WPS
(on
the
side
panel)
Off
Green
DSL-2750B User Manual
On
Blinks
Off
Rear Panel
Interface/Button
DSL
LAN4/3/2/1
USB
WIRELESS
ON/OFF
RESET
ON/OFF
POWER
WPS (on the
side panel)
Description
RJ-11 interface that connects to the telephone set through
the telephone cable.
Ethernet RJ-45 interfaces that connect to the Ethernet
interfaces of computers or Ethernet devices.
USB host port, for connecting the USB storage devices.
Button to enable or disable WLAN.
Reset to the factory defaults. To restore factory defaults,
keep the device powered on and push a paper clip into
the hole. Press down the button for one second, and then
release.
Power on or off.
Interface that connects to the power adapter. The power
adapter output is: 12 V DC, 1 A.
WPS button to setup connection to client.
DSL-2750B User Manual
2.2 System Requirements
Recommended system requirements are as follows:
 An 10 baseT/100BaseT Ethernet card is installed on your PC
 A hub or switch (attached to several PCs through one of Ethernet interfaces on the device)
 Operating system: Windows 98SE, Windows 2000, Windows ME, Windows XP, Windows Vista or Windows 7
 Internet Explorer V5.0 or higher, Netscape V4.0 or higher, or Firefox 1.5 or higher
2.3 Features
The device supports the following features:
 User-friendly GUI for web configuration
 Several pre-configured popular games. Just enable the game and the port settings are automatically configured.
 Compatible with all standard Internet applications
 Industry standard and interoperable DSL interface
 Simple web-based status page displays a snapshot of system configuration, and links to the configuration pages
 Downloadable flash software updates
 Support for up to 8 permanent virtual circuits (PVC)
 Support for up to 8 PPPoE sessions
 Support RIP v1 & RIP v2
 WLAN with high-speed data transfer rates of up to 130 Mbps, compatible with IEEE 802.11b/g/n, 2.4GHz compliant equipment
 Optimized Linux 2.6 Operating System
 IP routing and bridging
 Asynchronous transfer mode (ATM) and digital subscriber line (DSL) support
 Point-to-point protocol (PPP)
 Network/port address translation (NAT/PAT)
 Quality of service (QoS)
 Wireless LAN security: WPA, 802.1x, RADIUS client
 Universal plug-and-play(UPnP)
 File server for network attached storage (NAS) devices
 Print server
 Web filtering
 Management and control
Web-based management (WBM)
Command line interface (CLI)
TR-069 WAN management protocol
 Remote update
 USB mass-storage
 System statistics and monitoring
DSL-2750B User Manual
2.4 Standards Compatibility and Compliance












Support application level gateway (ALG)
ITU G.992.1 (G.dmt)
ITU G.992.2 (G.lite)
ITU G.994.1 (G.hs)
ITU G.992.3 (ADSL2)
ITU G.992.5 (ADSL2+)
ANSI T1.413 Issue 2
IEEE 802.3
IEEE 802.3u
IEEE 802.11b
IEEE 802.11g
IEEE 802.11n
3 Hardware Installation
3.1 Choosing the Best Location for Wireless Operation
Many environmental factors may affect the effective wireless function of the DSL Router. If this is the first time that you set up a wireless network device, read the
following information:
The access point can be placed on a shelf or desktop, ideally you should be able to see the LED indicators in the front, as you may need to view them for
troubleshooting.
Designed to go up to 100 meters indoors and up to 300 meters outdoors, wireless LAN lets you access your network from anywhere you want. However, the numbers
of walls, ceilings, or other objects that the wireless signals must pass through limit signal range. Typical ranges vary depending on types of materials and background
RF noise in your home or business.
DSL-2750B User Manual
3.2 Connecting the Router
Connect the DSL port of the router and the Modem port of the splitter
with a telephone cable; connect the phone to the phone port of the
splitter through a cable; and connect the incoming line to the Line port of
the splitter.
The spliiter has three ports:
 LINE: Connect to a wall phone jack (RJ-11 jack)
 Modem: Connect to the Line interface of the router
 PHONE: Connect to a telephone set
(2)
Connect the LAN port of the router to the network interface card (NIC) of
the PC through an Ethernet cable (MDI/MDIX).
(3)
Plug the power adapter to the wall outlet and then connect the other end
of it to the Power port of the router.
(1)
DSL-2750B User Manual
4 About the Web Configuration
The first time you setup the Router. It is recommended that you configure the WAN connection using a single computer, to ensure that both the computer and the
Router are not connected to the LAN. Once the WAN connection operates properly, you may continue to make changes to Router configuration, including IP settings
and DHCP setup. This chapter is concerned with using your computer to configure the WAN connection. The following chapter describes the various menus used to
configure and monitor the Router, including how to change IP settings and DHCP server setup.
4.1 Preparation Before Login
Before accessing the Routerre the communication between PC and Router is normal. Check the communication as follows.
Configure the IP address of the PC as 192.168.1.X (2~254), net mask as
255.255.255.0, gateway address as 192.168.1.1 (for customized version,
configure them according to the actual version).
Enter arp -a in the DOS window to check whether the PC can read the MAC
address of the Router.
Ping the MAINTENANCE IP address (192.168.1.1 by default) of the Router.
If the PC can read the MAC address of the Router and can ping through the
MAINTENANCE IP address of the Router, that means the communication of
the PC and the Router is normal.
Note:
When you manage the Router through Web, you must keep the Router
power on. Otherwise, the Router may be damaged.
DSL-2750B User Manual
4.2 Logging In to the Router
The following description is a detail “How-To” user guide and is prepared for first time users.
4.2.1 First-Time Login
When you log in to the DSL Router for the first time, the login wizard appears.
Step 1 Open a Web browser on your computer.
Step 2
Enter http://192.168.1.1 (DSL router default IP address) in the
address bar. The login page appears.
Step 3
Enter a user name and the password. The default username and
password of the super user are admin and admin. The username
and password of the common user are user and user. You need not
enter the username and password again if you select the option
Remember my password. It is recommended to change these
default values after logging in to the DSL router for the first time.
Step 4 Click Login to log in.
DSL-2750B User Manual
4.3 Setup
4.3.1 Wizard
Wizard enables fast and accurate configuration of Internet connection and other important parameters. The following sections describe these various configuration
parameters.
When subscribing to a broadband service, you should be aware of the method, by which you are connected to the Internet. Your physical WAN device can be Ethernet,
DSL, or both. Technical information about the properties of your Internet connection is provided by your Internet service provider (ISP). For example, your ISP should
inform you whether you are connected to the Internet using a static or dynamic IP address, or the protocol, such as PPPoA or PPPoE, that you use to communicate
over the Internet.
Choose Setup > Wizard. The page shown in the figure appears.
Click Setup Wizard. The page shown in the right figure appears.
DSL-2750B User Manual
There are four steps to configure the device. Click Next to continue.
Change the password for logging in to the device.
The default password is admin. To secure your network, modify the password
timely.
Note:
Confirm password must be the same as the new password.
To ignore the step, click Skip.
DSL-2750B User Manual
10
Set the time and date.
First NTP time server: Select the domain of the time server to which system
time will be synchronized.
Configure the Internet connection.
Select the country and ISP. Set the VPI and VCI. If you fail to find the country
and ISP from the drop-down lists, select Others.
 Protocol: The protocol connection type of the interface. You can select
PPPoE, PPPoA, Dynamic IP, Static IP, or Bridge.
 Connection Type: You can select it from the drop-down list according to the
uplink equipment. You can select LLC or VC-Mux.
 VPI: The virtual path identifier of the WAN interface (provided by your ISP).
The range is 0 to 255.
 VCI: The virtual channel identifier for the WAN interface. The range is 32 to
65535 (1 to 31 are reserved for known protocols).
DSL-2750B User Manual
11
If the Protocol is PPPoE or PPPoA, the page shown in either of the two figures
appears.
DSL-2750B User Manual
12
Set the user name and password as provided by your ISP.
DSL-2750B User Manual
13
If the Protocol is Static IP, the page shown in the figure appears.
Enter the IP Address, Subnet Mask, Default Gateway, and Primary DNS Server.
If the Protocol is Dynamic IP or Bridge, the page shown in the figure appears.
DSL-2750B User Manual
14
After proper configuration, click Next.
DSL-2750B User Manual
15
Configure the wireless network, or keep the default settings. Enter the
information and click Next.
 Enable Your Wireless Network: Enable wireless settings on LAN interface.
 Wireless Network Name (SSID): SSID is the name of your wireless
network. All wireless-equipped devices share the same SSID to
communicate with each other. It must be unique to identify separated
wireless network. For security, you should change the default SSID to a
special ID.
 Visibility Status: You can select visible or invisible.
 Security Level: In order to protect your network from hackers and
unauthorized users, it is highly recommended you choose one of the
following wireless network security settings.
 WPA Pre-Shared Key: Please set it. Then you will need to enter the same
key here into your wireless clients in order to enable proper wireless
connection.
DSL-2750B User Manual
16
The page shown in the right figure appears. In this page, you can view the
configuration information. You can check weather the configurations match the
information provided by your ISP.
DSL-2750B User Manual
17
4.3.2 Internet Setup
Choose Setup > Internet Setup. The page as shown in the right figure
appears. In this page, you can configure the WAN interface of the device.
DSL-2750B User Manual
18
Click Add in “INTERNET SETUP”. The page shown in the following figure
appears.
Description
Field
PVC
Settings
 The virtual path between two points in an ATM
network and its valid value is from 0 to 255.
 The virtual channel between two points in an ATM
network, ranging from 32 to 65535 (0 to 31 is
reserved for local management of ATM traffic).
You can select from the drop-down list.
Service
Category
You can select from the drop-down list.
Protocol
QoS
scheduler
Encapsulati
on Mode
You can select one of the item between Strict Priority
and Weighted Fair Queuing.
Select the method of encapsulation provided by your
ISP. You can select from the drop-down list.
DSL-2750B User Manual
19
Click Next, the page shown in the following figure appears.
DSL-2750B User Manual
20
If you select the PPP over Ethernet (PPPoE) or PPP over ATM (PPPoA) as
the connection protocol, the following page appears.
 PPP Username: The correct user name that your ISP provides to you.
 PPP Password: The correct password that your ISP provides to you.
 Authentication Method: The value can be AUTO, PAP, CHAP, or
MSCHAP. Usually, you can select AUTO.
 Dial on demand (with idle timeout timer): If this function is enabled,
you need to enter the idle timeout time. Within the preset minutes, if the
router does not detect the flow of the user continuously, the router
automatically stops the PPPoE connection. Once it detects the flow (like
access to a webpage), the router restarts the PPPoE dialup.
If this function is disabled, the router performs PPPoE dial-up all the
time. The PPPoE connnection does not stop, unless the router is
powered off and DSLAM or uplink equipment is abnormal.
 MTU Size: Maximum Transmission Unit. Sometimes, you must modify
this function to access network successfully.
 PPP IP extension: If this function is enabled, the WAN IP address
obtained by the router through built-in dial-up can be directly assigned to
the PC being attached to the router (at this time, the router connects to
only one PC). From the aspect of the PC user, the PC dials up to obtain
an IP addres. But actually, the dial-up is done by the router. If this
function is disabled, the router itself obtains the WAN IP address.
 Use Static IP Address: If this function is disabled, the router obtains an
IP address assigned by an uplink equipment such as BAS, through
PPPoE dial-up.
If this function is enabled, the router uses this IP address as the WAN IP
address.
 Enable NAT: Select it to enable the NAT functions of the router. If you do
not want to enable NAT and wish the router user to access the Internet
normally, you must add a route on the uplink equipment. Otherwise, the
access to the Internet fails. Normally, NAT should be enabled.
 Enable Firewall: Enable or disable IP filtering.
 Enable IGMP Multicast: IGMP proxy. For example, if you wish that the
PPPoE mode supports IPTV, enable this function.
DSL-2750B User Manual
21
If you select the MAC Encapsulation Routing(MER) as the connection
protocol, the following page appears.
 Obtain an IP address automatically: The modem obtains a WAN IP
address automatically and at this time it enables DHCP client functions.
The WAN IP address is obtained from the uplink equipment like BAS and
the uplink equipment is required to enable the DHCP server functions.
 Use the following IP address: If you want to manually enter the WAN IP
address, select this check box and enter the information in the field.
 WAN IP Address: Enter the IP address of the WAN interface provided by
your ISP.
 WAN Subnet Mask: Enter the subnet mask concerned to the IP address
of the WAN interface provided by your ISP.
 Default Gateway: Enter the default gateway.
 Obtain DNS info automatically from WAN interface: You can get DNS
server information from the selected WAN interface
 Use the following Static DNS IP address: If you want to manually enter
the IP address of the DNS server, select this check box and enter the
information in the fields.
 Primary DNS server: Enter the IP address of the primary DNS server.
 Secondary DNS server: Enter the IP address of the secondary DNS
server provided by your ISP.
DSL-2750B User Manual
22
After proper settings, click Next.
DSL-2750B User Manual
23
4.3.3 Wireless Connection
This section includes the wireless connection setup wizard and WPS setup
wizard. There are two ways to setup your wireless connection. You can use the
Wireless Connection Setup Wizard or you can manually configure the
connection.
Choose Setup > Wireless Connection. The Wireless Connection page
shown in the following figure appears.
DSL-2750B User Manual
24
4.3.3.1 Wireless Wizard
In Wireless Connection page, Click “Wireless Connection Setup Wizard”,
the page shown in the following figure appears.
If you select “Use WPA encryption instead of WEP” and “Manually assign a
network key”, click “Next”, the page shown in the following figure appears.
DSL-2750B User Manual
25
If you only select “Manually assign a network key”, click “Next”, the page
shown in the following figure appears.
After you enter the network key, the page shown in the following figure appears,
you can confirm the wireless settings in this page.
Click Save to save the settings.
DSL-2750B User Manual
26
4.3.3.2 Wireless Device Add
In Wireless Connection page, Click Add Wireless Device with WPS, the
page shown in the following figure appears.
Select Auto, click Next, the page shown in the following figure appears.
When PIN is used, users are only allowed to enter no more than eight digits in
the field.
Select Manual, click Next, the page shown in the following figure appears.
It displays the current wireless settings and you can manually enter the settings
in the wireless device that’s to be added in the wireless network.
DSL-2750B User Manual
27
4.3.3.3 Manual Wireless Setup
If you want to configure the Internet settings of you new D-Link Router manually, click Manual Wireless Connection Setup. It will redirect to 4.4.1 Wireless Settings.
4.3.3.4 WPS Reset to Unconfigured
In Wireless Connection page, Click Reset to Unconfigured, the page shown
in the following figure appears.
Once the “Reset to Unconfigured” button is clicked, the “wireless settings”
will be reset to factory default, other settings will remain unchanged.
DSL-2750B User Manual
28
4.3.4 Local Network
You can configure the LAN IP address according to the actual application. The preset IP address is 192.168.1.1. You can use the default settings and DHCP service to
manage the IP settings for the private network. The IP address of the device is the base address used for DHCP. To use the device for DHCP on your LAN, the IP
address pool used for DHCP must be compatible with the IP address of the device. The IP address available in the DHCP IP address pool changes automatically if you
change the IP address of the device.
You can also enable the secondary LAN IP address. The two LAN IP addresses must be in different networks.
Choose Setup > Local Network. The Local Network page shown in the
following figure appears.
DSL-2750B User Manual
29
By default, Enable DHCP Server is selected for the Ethernet LAN
interface of the device. DHCP service supplys IP settings to workstations
configured to automatically obtain IP settings that are connected to the
device through the Ethernet port. When the device is used for DHCP, it
becomes the default gateway for DHCP client connected to it. If you
change the IP address of the device, you must also change the range of IP
addresses in the pool used for DHCP on the LAN. The IP address pool
can contain up to 253 IP addresses.
Click Apply to save the settings.
In the Local Network page, you can assign IP addresses on the LAN to
specific individual computers based on their MAC addresses.
Click Add to add static DHCP (optional). The page shown in the following
figure appears.
Select Enable to reserve the IP address for the designated PC with the
configured MAC address.
The Computer Name helps you to recognize the PC with the MAC
address. For example, Father’s Laptop.
Click Apply to save the settings.
After the DHCP reservation is saved, the DHCP reservations list displays
the configuration.
If the DHCP reservations list table is not empty, you can select one or
more items and click Edit or Delete.
DSL-2750B User Manual
30
4.3.5 Time and Date
Choose Setup > Time and Date. The page shown in the following figure
appears.
In the Time and Date page, you can configure, update, and maintain the correct
time on the internal system clock. You can set the time zone that you are in and
the network time protocol (NTP) server. You can also configure daylight saving
to automatically adjust the time when needed.
Select Automatically synchronize with Internet time servers.
Select the specific time server and the time zone from the corresponding
drop-down lists.
Select Enable manual Daylight Saving,overwrite automatic rule if necessary.
Set the daylight as you want.
Click Apply to save the settings.
DSL-2750B User Manual
31
4.3.6 Print Server
Choose Setup > Print Server. The page shown in the following figure appears.
Select Enable on-board print server, the page shown in the following figure
appears.
 Printer name: can be any text string up to 80 characters.
 Make and model: can be any text string up to 80 characters.
Click Save/Apply to save the settings.
4.3.7 Logout
Choose Setup > Logout. The page shown in the following figure appears. In
this page, you can log out of the configuration page.
DSL-2750B User Manual
32
4.4 Advanced
This section includes advanced features used for network management, security and administrative tools to manage the device. You can view status and other
information that are used to examine performance and troubleshoot.
4.4.1 Wireless Settings
This function is used to modify the standard 802.11 wireless radio settings. It is recommended not to change the default settings, because incorrect settings may impair
the performance of your wireless radio. The default settings provide the best wireless radio performance in most environments.
Choose ADVANCED > Wireless Settings. The page shown in the following
figure appears.
DSL-2750B User Manual
33
4.4.1.1 Wireless Basics
In the Wireless Settings page, click Wireless Basic, the page shown in
the following figure appears. In this page, you can configure the
parameters of wireless LAN clients that may connect to the device.
 Enable Wireless: Select this to turn Wi-Fi on and off.
 Wireless Network Name (SSID): The Wireless Network Name is a
unique name that identifies a network. All devices on a network
must share the same wireless network name in order to
communicate on the network. If you decide to change the wireless
network name from the default setting, enter your new wireless
network name in this field.
 Visibility Status: You can select Visible or Invisible.
 Country: Select the country from the drop-down list.
 Wireless Channel: Select the wireless channel from the pull-down
menu. It is different for different countries.
 802.11 Mode: Select the appropriate 802.11 mode based on the
wireless clients in your network. The drop-down menu options are
802.11n auto, 802.11g only, Mixed 802.11g and 802.11b, or 802.11b
only.
 Bandwidth: You can select it from the drop-down list:
Click Apply to save the settings.
DSL-2750B User Manual
34
4.4.1.2 Advanced Settings
In the Wireless Settings page, click Advanced settings, the page shown in
the following figure appears.
 Multicast Rate: Select the multicast transmission rate for the network.
The rate of data transmission should be set depending on the speed of
your wireless network. You can select from a range of transmission
speeds, or you can select Auto to have the Router automatically use the
fastest possible data rate and enable the Auto-Fallback feature.
Auto-Fallback will negotiate the best possible connection speed between
the Router and a wireless client. The default value is Auto.
 Fragmentation Threshold: Packets that are larger than this threshold
are fragmented into multiple packets. Try to increase the fragmentation
threshold if you encounter high packet error rates. Do not set the
threshold too low, since this can result in reducing networking
performance.
 RTS Threshold: This value should remain at its default setting of
2347.Should you encounter inconsistent data flow, only minor reductions
are recommended. Should you encounter inconsistent data flow, only
minor reduction of the default value, 2347 is recommended. If a network
packet is smaller than the preset RTS threshold size, the RTS/CTS
mechanism will not be enabled. The Router sends Request to Send
(RTS) frames to a particular receiving station and negotiates the sending
of a data frame. After receiving an RTS, the wireless station responds
with a Clear to Send (CTS) frame to acknowledge the right to begin
transmission. The RTS Threshold value should remain at its default
value of 2347.
 DTIM Interval: (Delivery Traffic Indication Message) Enter a value
between 1 and 255 for the Delivery Traffic Indication Message (DTIM.) A
DTIM is a countdown informing clients of the next window for listening to
broadcast and multicast messages.
 Beacon Interval: A beacon is a packet of information that is sent from a
connected device to all other devices where it announces its availability
and readiness. A beacon interval is a period of time (sent with the
beacon) before sending the beacon again. The beacon interval may be
adjusted in milliseconds (ms). Default (100) is recommended.
 Global Max Clients: Specifies maximum wireless client stations to be
enble to link with AP. Once the clients exceed the max vlaue, all other
clients will be refused.
DSL-2750B User Manual
35

Transmit Power: Adjust the transmission range here. This tool can be
helpful for security purposes if you wish to limit the transmission range.
 WMM (Wi-Fi Multimedia): Select whether WMM is enable or disabled.
Before you disable WMM, you should understand that all QoS queues or
traffic classes related to wireless do not take effect.
 Enable Wireless: Select this to turn Wi-Fi on and off.
 Wireless Network Name (SSID): The Wireless Network Name is a
unique name that identifies a network. All devices on a network must
share the same wireless network name in order to communicate on the
network. If you decide to change the wireless network name from the
default setting, enter your new wireless network name in this field.
 Visibility Status: You can select Visible or Invisible.
 User Isolation: When many clients connect to the same access point,
they can access each other. If you want to disable the access between
clients which connect the same access point, you can select On to
enable this service.
 Disable WMM Advertise: You can select On or Off from the drop-down
list.
 Enable Wireless Multicast Forwarding (WMF): You can select On or
Off from the drop-down list.
 Max Clients: Specifies maximum wireless client stations to be enble to
link with AP.
 GUEST/VIRTUAL ACCESS POINT: If you want to make Guest/Virtual
network function be available, you can set the parameters below.
These settings are only for more technically advanced users who have
sufficient knowledge about wireless LAN. Do not change these settings
unless you know the effect of changes on the device.
Click Apply to save the settings.
DSL-2750B User Manual
36
4.4.1.3 MAC Filtering
In the Wireless Settings page, click MAC Filtering, the page shown in the
following figure appears.
In this page, you can allow or deny users access the wireless router based on
their MAC address.
Click Add, the page shown in the following figure appears.
DSL-2750B User Manual
37
4.4.1.4 Security Settings
In the Wireless Settings page, click Security Settings. The page shown in the
following figure appears.
Select the SSID that you want to configure from the drop-down list.
Select the encryption type from the Security Mode drop-down list.You can
select None, WEP, WPA-Personal and WPA-Enterprise.
DSL-2750B User Manual
38
If you select WEP, the page shown in the following figure appears.
WEP (Wireless Encryption Protocol) encryption can be enabled for security
and privacy. WEP encrypts the data portion of each frame transmitted from the
wireless adapter using one of the predefined keys.
The router offers 64 or 128 bit encryption with four keys available.
Select Encryption Strength from the drop-down menu. (128 bit is stronger
than 64 bit)
Enter the key into the Network Key field 1~4. (Key length is outlined at the
bottom of the window.)
Click Apply/Save to save the settings.
DSL-2750B User Manual
39
If you select WPA-Personal, the page shown in the following figure appears.
DSL-2750B User Manual
40
If you select WPA- Enterprise, the page shown in the following figure appears.
You can only use WPA-enterprise if you have set up RADIUS server. This is the
WPA/WPA2 authentication with RADIUS server instead of pre-shared key.
DSL-2750B User Manual
41
4.4.2 Port Forwarding
This function is used to open ports in your device and re-direct data through
those ports to a single PC on your network (WAN-to-LAN traffic). It allows
remote users to access services on your LAN, such as FTP for file transfers or
SMTP and POP3 for e-mail. The device accepts remote requests for these
services at your global IP address. It uses the specified TCP or UDP protocol
and port number, and redirects these requests to the server on your LAN with
the LAN IP address you specify. Note that the specified private IP address must
be within the available range of the subnet where the device is in.
Choose ADVANCED > Port Forwarding. The page shown in the following
figure appears.
DSL-2750B User Manual
42
Click Add to add a virtual server.
Select a service for a preset application, or enter a name in the Custom Server
field.
Enter an IP address in the Server IP Address field, to appoint the
corresponding PC to receive forwarded packets.
The Ports show the ports that you want to open on the device. The TCP/UDP
means the protocol type of the opened ports.
DSL-2750B User Manual
43
Click Apply to save the settings. The page shown in the following figure
appears. A virtual server is added.
4.4.3 Port Triggering
Some applications require that specific ports in the firewall of the device are
open for the remote parties to access. Application rules dynamically open the
firewall ports when an application on the LAN initiates a TCP/UDP connection to
a remote party using the trigger ports. The device allows the remote party from
the WAN side to establish new connections back to the application on the LAN
side using the firewall ports. A maximum of 32 entries can be configured.
Choose ADVANCED > Port Triggering. The page shown in the following figure
appears.
DSL-2750B User Manual
44
Click Add to add a new Port Trigger.
Click the Select an application drop-down menu to choose the application you
want to setup for port triggering. When you have chosen an application the
default Trigger settings will populate the table below.
If the application you want to setup isn’t listed, click the Custom application
radio button and type in a name for the trigger in the Custom application field.
Configure the Trigger Port Start, Trigger Port End, Trigger Protocol, Open
Port Start, Open Port End and Open Protocol settings for the port trigger you
want to configure.
When you have finished click the Apply button.
DSL-2750B User Manual
45
4.4.4 DMZ
Since some applications are not compatible with NAT, the device supports the
use of a DMZ IP address for a single host on the LAN. This IP address is not
protected by NAT and it is visible to agents on the Internet with the correct type
of software. Note that any client PC in the DMZ is exposed to various types of
security risks. If you use the DMZ, take measures (such as client-based virus
protection) to protect the remaining client PCs on your LAN from possible
contamination through DMZ.
Choose ADVANCED > DMZ. The page shown in the following figure appears.
Click Apply to save the settings.
4.4.5 Parental Control
Choose ADVANCED > Parental Control. The Parent Control page shown in
the following figure appears.
This page provides two useful tools for restricting the Internet access. Block
Websites allows you to quickly create a list of all websites that you wish to stop
users from accessing. Block MAC Address allows you to control when clients
or PCs connected to the device are allowed to access the Internet.
DSL-2750B User Manual
46
4.4.5.1 Block Website
In the Parent Control page, click Block Website. The page shown in the
following figure appears.
Click Add. The page shown in the following page appears.
Enter the website in the URL field. Select the Schedule from drop-down list, or
select Manual Schedule and select the corresponding time and days.
DSL-2750B User Manual
47
Click Apply to add the website to the BLOCK WEBSITE table.The page shown
in the following figure appears.
4.4.5.2 Block MAC Address
In the Parent Control page, click Block MAC Address. The page shown in the
following figure appears.
DSL-2750B User Manual
48
Click Add. The page shown in the following figure appears.
Enter the use name and MAC address and select the corresponding time and
days.
Click Apply to add the MAC address to the BLOCK MAC ADDRESS table. The
page shown in the following figure appears.
DSL-2750B User Manual
49
4.4.6 Filtering Options
Choose ADVANCED > Filtering Options. The Filtering Options page shown
in the following figure appears.
4.4.6.1 Inbound IP Filtering
In the Filtering Options page, click Inbound IP Filtering. The page shown in
the following figure appears.
DSL-2750B User Manual
50
Click Add to add an inbound IP filter. The page shown in the following figure
appears.
Enter the Filter Name and specify at least one of the following criteria: protocol,
source/destination IP address, subnet mask, and source/destination port.
Click Apply to save the settings.
The ACTIVE INBOUND FILTER shows detailed information about each created
inbound IP filter.
Note:
The settings only apply when the firewall is enabled.
DSL-2750B User Manual
51
4.4.6.2 Outbound IP Filtering
By default, all outgoing IP traffic from the LAN is allowed. The outbound filter
allows you to create a filter rule to block outgoing IP traffic by specifying a filter
name and at least one condition.
In the Filtering Options page, click Outbound IP Filtering. The page shown in
the following figure appears.
Click Add to add an outbound IP filter. The page shown in the following figure
appears.
Enter the Filter Name and specify at least one of the following criteria: protocol,
source/destination IP address, subnet mask, and source/destination port. Click
Apply to save the settings.
The ACTIVE OUTGOING IP FILTER shows detailed information about each
created outbound IP filter.
DSL-2750B User Manual
52
4.4.6.3 Bridge Filtering
In the Filtering Options page, click Bridge Filtering. The page shown in the
following figure appears. This page is used to configure bridge parameters. In
this page, you can change the settings or view some information of the bridge
and its attached ports.
DSL-2750B User Manual
53
Click Add to add a bridge filter. The page shown in the following figure appears.
Click Apply to save the settings.
4.4.7 DNS
Domain name system (DNS) is an Internet service that translates domain
names into IP addresses. Because domain names are alphabetic, they are
easier to remember. The Internet, however, is actually based on IP addresses.
Each time you use a domain name, a DNS service must translate the name into
the corresponding IP address. For example, the domain name
www.example.com might be translated to 198.105.232.4.
The DNS system is, in fact, its own network. If one DNS server does not know
how to translate a particular domain name, it asks another one, and so on, until
the correct IP address is returned.
Choose ADVANCED > DNS. The page shown in the folllowin g figure appears.
DNS SERVER CONFIGURATION
If you are using the device for DHCP service on the LAN or if you are using DNS
servers on the ISP network, select Obtain DNS Info from a WAN interface.
If you have DNS IP addresses provided by your ISP, enter these IP addresses
in the available entry fields for the preferred DNS server and the alternate DNS
server.
Click Apply to save the settings.
DSL-2750B User Manual
54
4.4.8 Dynamic DNS
The device supports dynamic domain name service (DDNS). The dynamic DNS
service allows a dynamic public IP address to be associated with a static host
name in any of the many domains, and allows access to a specified host from
various locations on the Internet. Click a hyperlinked URL in the form of
hostname.dyndns.org and allow remote access to a host. Many ISPs assign
public IP addresses using DHCP, so locating a specific host on the LAN using
the standard DNS is difficult. For example, if you are running a public web
server or VPN server on your LAN, DDNS ensures that the host can be located
from the Internet even if the public IP address changes. DDNS requires that an
account be set up with one of the supported DDNS service providers
(DyndDNS.org or dlinkddns.com).
Choose ADVANCED > Dynamic DNS. The page shown in the following page
appears.
Click Add to add dynamic DNS. The page shown in the following figure
appears.
 DDNS provider: Select one of the DDNS registration organizations from
the down-list drop.

Host Name: Enter the host name that you registered with your DDNS
service provider.
 Interface: Select the interface you want to use.
 Username: Enter the user name for your DDNS account.
 Password: Enter the password for your DDNS account.
Click Apply to save the settings.
DSL-2750B User Manual
55
4.4.9 Storage Service
Choose ADVANCED > Storage Service. The Storage Service page shown in
the following figure appears.
4.4.9.1 Storage Device Info
n the Storage Service page, click Storage Device Info. The page shown in the
following figure appears.
When you insert USB storage, this page will show the information of USB
storage, such as file system, total space and used space.
DSL-2750B User Manual
56
4.4.9.2 User Accounts
In the Storage Service page, click Storage User Account. The page shown in
the following figure appears.
Click Add to add a user. The page shown in the following figure appears.
 Username:set valid user that access CPE’s samba server
 Password:user’s password
 Confirm Password:user’s password
 volumeName:the directory you want to share
DSL-2750B User Manual
57
4.4.10
Multicast
Choose ADVANCED > Multicast. The page shown in the following figure
appears.
 Default Version:IGMP version
 Query Interval(s):The query interval is the amount of time in seconds
between IGMP General Query messages sent by the router (if the router
is the querier on this subnet)
 Query Response Interval (1/10s): The query response interval is the
maximum amount of time in seconds that the IGMP router waits to
receive a response to a General Query message. The query response
interval is the Maximum Response Time field in the IGMP v2 Host
Membership Query message header. The default query response
interval is 10 seconds and must be less than the query interval
 Last Member Query Interval (1/10s): The last member query interval is
the amount of time in seconds that the IGMP router waits to receive a
response to a Group-Specific Query message. The last member query
interval is also the amount of time in seconds between successive
Group-Specific Query messages.
 Robustness Value: The robustness variable is a way of indicating how
susceptible the subnet is to lost packets. IGMP can recover from
robustness variable minus 1 lost IGMP packets.
 Maximum Multicast Groups:max multicast groups
 Maximum Multicast Data Sources (for IGMPv3): max group data
sources that want to receive.
 Maximum Multicast Group Members:Max member in one group
 Fast Leave Enable: Enable or disable fast leave feature.
 LAN to LAN (Intra LAN) Multicast Enable: Enable or disable Lan to
Lan msulticast.
DSL-2750B User Manual
58
4.4.11
Network Tools
Choose ADVANCED > Network Tools. The page shown in the
following figure appears.
DSL-2750B User Manual
59
In the NETWORK TOOLS page, you can configure port mapping,
IGMP, quality of service, queue, QoS classification, UPnP, ADSL
settings, SNMP, TR-069, and certificates through clicking the
navigation.
DSL-2750B User Manual
60
4.4.11.1 Port Mapping
Choose ADVANCED > Network Tools and click Port Mapping. The page
shown in the following figure appears. In this page, you can bind the WAN
interface and the LAN interface to the same group.
DSL-2750B User Manual
61
Click Add to add port mapping. The page shown in the following figure appears.
The procedure for creating a mapping group is as follows:
Step 1 Enter the group name.
Step 2 Select the WAN interface for your new group.
Step 3 Select LAN interfaces from the Available Interface list and click the
<- arrow button to add them to the grouped interface list, in order to
create the required mapping of the ports. The group name must be
unique.
Step 4 Enter the option information of DHCP vendor IDs.
Step 5 Click Apply to save the settings.
DSL-2750B User Manual
62
DSL-2750B User Manual
63
4.4.11.2 IGMP
Choose ADVANCED > Network Tools and click IGMP. The page shown in the
following figure appears. When enable IGMP Snooping, the multicast data
transmits through the specific LAN port which has received the request report.
4.4.11.3 Quality of Service
Choose ADVANCED > Network Tools and click Quality of Service. The page
shown in the following figure appears.
In this page, you can enable/disable the QoS. Click Save/Apply to take the
setting effect.
DSL-2750B User Manual
64
4.4.11.4 Queue Config
Choose ADVANCED > Network Tools and click Queue Config. The page
shown in the following figure appears.
Click Add. The page shown in the following figure appears.
Click Save/Apply to save the settings.
DSL-2750B User Manual
65
4.4.11.5 QoS Classification
Choose ADVANCED > Network Tools, and click QoS Classification, the page
shown in the following figure appears.This page allows you to config various
classification.
DSL-2750B User Manual
66
Click Add. The page shown in the following figure appears.
DSL-2750B User Manual
67
4.4.11.6 UPnP
Choose ADVANCED > Network Tools and click UPnP. The page shown in the
following figure appears.
In this page, you can configure universal plug and play (UPnP). The system
acts as a daemon after you enable UPnP.
UPnP is used for popular audio visual software. It allows automatic discovery of
your device in the network. If you are concerned about UPnP security, you can
disable it. Block ICMP ping should be enabled so that the device does not
respond to malicious Internet requests.
Click Apply to save the settings.
4.4.11.7 ADSL
Choose ADVANCED > Network Tools and click ADSL Settings. The page
shown in the following figure appears.
In this page, you can select the DSL modulation. Normally, you can keep the
factory default setting. The device negotiates the modulation mode with
DSLAM.
Click Apply to save the settings.
DSL-2750B User Manual
68
4.4.11.8 SNMP
Choose ADVANCED > Network Tools and click SNMP. The page shown in the
right figure appears. In this page, you can set SNMP parameters.
 Read Community: The network administrator must use this password to
read the information of this device.
 Set Community: The network administrator must use this password to
configure the information of this device.
 Trap Manager IP: The trap information is sent to this host.
Click Apply to save the settings.
DSL-2750B User Manual
69
4.4.11.9 TR-069
Choose ADVANCED > Network Tools and click TR-069. The page shown in
the following figure appears. In this page, you can configure the TR-069 CPE.
WAN Management Protocol (TR-069) allows a Auto-Configuration Server
(ACS) to perform auto-configuration, provision, collection, and diagnostics to
this device.
In this page, you may configure the parameters such as the ACS URL, ACS
password, and connection request user name.
After finishing setting, click Apply to save and apply the settings.
4.4.11.10
Certificates
Choose ADVANCED > Network Tools and click Certificates. The Certificates
page shown in the following figure appears. In this page, you can configure local
certificate and trusted certificate.
DSL-2750B User Manual
70
4.4.12
Routing
Choose ADVANCED > Routing. The page shown in the following page
appears.
4.4.12.1 Static Route
Choose ADVANCED > Routing and click Static Route. The page shown in the
following figure appears. This page is used to configure the routing information.
In this page, you can add or delete IP routes.
DSL-2750B User Manual
71
Click Add to add a static route. The page shown in the following figure appears.
 Destination Network Address: The destination IP address of the router.
 Subnet Mask: The subnet mask of the destination IP address.
 Use Gateway IP Address: The gateway IP address of the router.
 Use Interface: The interface name of the router output port.
You can click Use Gateway IP Address or Use Interface.
Click Apply to save the settings.
4.4.12.2 Default Gateway
Choose ADVANCED > Routing and click Default Gateway. The page shown
in the following figure appears.
Select the WAN interface as your default gateway. Click Apply to save the
settings.
DSL-2750B User Manual
72
4.4.12.3 Policy Routing
Choose ADVANCED > Routing and click policy Routing. The page shown in
the following figure appears.
The policy route binds one WAN connection and one LAN interface.
Click Add, the page shown in the following figure appears.
DSL-2750B User Manual
73
4.4.13
RIP
Choose ADVANCED > Routing and click RIP. The page shown in the following
figure appears. This page is used to select the interfaces on your device that
use RIP and the version of the protocol used.
If you are using this device as a RIP-enabled device to communicate with others
using the routing information protocol, enable RIP and click Apply to save the
settings.
4.4.14
MultiNat
Network address translation (NAT) is the process of modifying network address
information in IP packet headers while in transit across a traffic routing device
for the purpose of remapping a given address space into another. The packets
which source IP address match between “internalStart” and “internalEnd” in the
NAT table come to the router, the router changes source IP of this packet by the
IP address that set between “externalStart” and “externalEnd”, then transmit the
packet into Internet.
Choose ADVANCED > MultiNat. The page shown in the following figure
appears.
DSL-2750B User Manual
74
Click Add, the page shown in the following figure appears.
In this page, please select the proper type; select the proper Use interface, and
configure the other parameters in this page.
After finishing setting, click Apply to save the settings.
4.4.15
Schedules
Choose ADVANCED > Schedules. The page shown in the following figure
appears.
DSL-2750B User Manual
75
Click Add to add schedule rule. The page shown in the following figure appears.
Click Apply to save the settings.
4.4.16
Logout
Choose ADVANCED > Logout. The page shown in the following figure
appears. In this page, you can log out of the configuration page.
DSL-2750B User Manual
76
4.5 Maintenance
4.5.1 System
Choose MAINTENANCE > System. The System page shown in the
following figure appears.
In this page, you can reboot device, back up the current settings to a
file, restore the settings from the file saved previously, and restore the
factory default settings.
The buttons in this page are described as follows:
 Reboot: Reboot the device.
 Backup Settings: Save the settings to the local hard drive.
Select a location on your computer to back up the file. You can
name the configuration file.
 Update settings: Click Browse to select the configuration file of
device and click Update Settings to begin restoring the device
configuration..
 Restore Default Settings: Reset the device to default settings.
Notice: Do not turn off your device or press the Reset button while an
operation in this page is in progress.
DSL-2750B User Manual
77
4.5.2 Firmware Update
Choose MAINTENANCE > Firmware Update. The page shown in the following
figure appears. In this page, you can upgrade the firmware of the device.
The procedure for updating the firmware is as follows:
Step 1 Click Browse…to search the file.
Step 2 Click Update Firmware to update the configuration file.
The device loads the file and reboots automatically.
Notice: Do not turn off your device or press the reset button while this
procedure is in progress.
4.5.3 Access Controls
Choose MAINTENANCE > Access Controls. The Access Controls page
shown in the following figure appears. The page contains Account Password,
Services.
DSL-2750B User Manual
78
4.5.3.1 Account Password
In the Access Controls page, click Account Password. The page shown in
the following figure appears. In this page, you can change the password of the
user and set time for automatic logout.
You should change the default password to secure your network. Ensure that
you remember the new password or write it down and keep it in a safe and
separate location for future reference. If you forget the password, you need to
reset the device to the factory default settings and all configuration settings of
the device are lost.
Select the Username from the drop-down list. You can select admin, support,
or user.
Enter the current and new passwords and confirm the new password, to change
the password.
Click Apply to apply the settings.
DSL-2750B User Manual
79
4.5.3.2 Services
In the Access Controls page, click Services. The page shown in the following
figure appears.
In this page, you can enable or disable the services that are used by the remote
host. For example, if telnet service is enabled and port is 23, the remote host
can access the device by telnet through port 23. Normally, you need not change
the settings.
Select the management services that you want to enable or disable on the LAN
or WAN interface.
Click Apply to apply the settings.
Note:
If you disable HTTP service, you cannot access the configuration page of
the device any more.
DSL-2750B User Manual
80
4.5.4 Diagnostics
Choose MAINTENANCE > Diagnostic. The page shown in the following figure
appears. In this page, you can test the device.
This page is used to test the connection to your local network, and the
connection to your DSL service provider. Click Rerun Diagnostics Test to run
diagnostics.
DSL-2750B User Manual
81
4.5.5 System Log
Choose MAINTENANCE > System Log. The System Log page shown in the
following figure appears.
This page displays event log data in the chronological manner. You can read the
event log from the local host or send it to a system log server. Available event
severity levels are as follows: Emergency, Alert, Critical, Error, Warning, Notice,
Informational and Debugging. In this page, you can enable or disable the
system log function.
The procedure for logging the events is as follows:
Step 1 Select Enable Log check box.
Step 2 Select the display mode from the Mode drop-down list.
Step 3 Enter the Server IP Address and Server UDP Port if the Mode is set
to Both or Remote.
Step 4 Click Apply to apply the settings.
Step 5 Click View System Log to view the detail information of system log.
4.5.6 Logout
Choose MAINTENANCE > Logout. The page shown in the following figure
appears. In this page, you can log out of the configuration page.
DSL-2750B User Manual
82
4.6 Status
You can view the system information and monitor performance.
4.6.1 Device Info
Choose STATUS > Device Info. The page shown in the following figure
appears.
The page displays the summary of the device status, including the system
information, Internet information, wireless information and local network
information.
DSL-2750B User Manual
83
4.6.2 Wireless Clients
Choose STATUS > Wireless Clients. The page shown in the following figure
appears. The page displays authenticated wireless stations and their statuses.
4.6.3 DHCP Clients
Choose STATUS > DHCP Clients. The page shown in the following page
appears.
This page displays all client devices that obtain IP addresses from the device.
You can view the host name, IP address, MAC address and time expired(s).
DSL-2750B User Manual
84
4.6.4 Logs
Choose STATUS > Logs. The page shown in the following figure appears.
This page lists the system log. Click Refresh to refresh the system log shown in
the table.
DSL-2750B User Manual
85
4.6.5 Statistics
Choose STATUS > Statistics. The page shown in the following figure appears.
This page displays the statistics of the network and data transfer. This
information helps technicians to identify if the device is functioning properly. The
information does not affect the function of the device.
DSL-2750B User Manual
86
4.6.6 Route info
Choose STATUS > Route Info. The page shown in the following figure appears.
The table shows a list of destination routes commonly accessed by the network.
4.6.7 Logout
Choose STATUS > Logout. The page shown in the following figure appears. In
this page, you can log out of the configuration page.
DSL-2750B User Manual
87
5 FAQs
Question
Answer
 Check the connection between the power adapter and the power socket.
Why are all the indicators off?
 Check whether the power switch is turned on.
Check the following:
 The connection between the device and the PC, the hub, or the switch.
 The running status of the computer, hub, or switch.
Why is the LAN indicator not on?
 The cables that connects the device and other devices:
– If the device connects to a computer, use the cross over cable.
– If the device connects to a hub or a switch, use the straight-through cable.
Why is the DSL indicator not on?
Check the connection between the DSL interface of the device and the socket.
Why does the Internet access fail when the Ensure that the following information is entered correctly:
DSL indicator is on?
 User name and password
Choose start > Run from the desktop. Enter Ping 192.168.1.1 (the default IP address of the device) in the DOS
window.
If the web configuration page still cannot be accessed, check the following configuration:
Why does the web configuration page of
 The type of the network cable
the device fail to be accessed?
 The connection between the device and the computer
 The TCP/IP properties of the network card of the computer
Keep the device powered on and press the RESET button for 1 second. Then, the device automatically reboots
and is restored to the factory default configuration.
The default configuration of the device is as follows:
How to restore the default configuration
 IP address: 192.168.1.1
after incorrect configuration?
 Subnet mask: 255.255.255.0.
 User name and password of super account: admin/admin
 User name and password of common account: admin/admin
DSL-2750B User Manual
88
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 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 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.
FCC Radiation Exposure Statement
This device complies with FCC radiation exposure limits set forth for an uncontrolled environment and it also complies with Part 15 of the FCC RF Rules. This equipment must be
installed and operated in accordance with provided instructions and the antenna(s) used for this transmitter must be installed to provide a separation distance of at least 20 cm
from all persons and must not be co-located or operating in conjunction with any other antenna or transmitter. End-users and installers must be provided with antenna installation
instructions and consider removing the no-collocation statement.
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.
Caution!
Any changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.
DSL-2750B User Manual
89

---

Source Exif Data:

File Type                       : PDF
File Type Extension             : pdf
MIME Type                       : application/pdf
PDF Version                     : 1.5
Linearized                      : No
Warning                         : Invalid xref table

EXIF Metadata provided by EXIF.tools