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D-Link DSL-2750U User Manual
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D-Link DSL-2750U User Manual

3g/adsl/ethernet router with wi-fi and built-in switch
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User Manual
DSL-2750U
3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch
July 2012

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Summary of Contents for D-Link DSL-2750U

  • Page 1 User Manual DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch July 2012...

  • Page 2: Table Of Contents

    DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch User Manual Contents Chapter 1. Introduction..........5 Contents and Audience............5 Conventions..............5 Document Structure............5 Chapter 2. Overview..........6 General Information............6 Specifications..............7 Product Appearance............11 Front Panel..............11 Back Panel...............12 Delivery Package............13 Chapter 3. Installation and Connection......14 Before You Begin............14 Connecting to PC............15...
  • Page 3 DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch User Manual Net................61 WAN..............61 Creating ADSL WAN Connection...........62 Creating Ethernet WAN Connection........68 Creating 3G WAN Connection..........72 LAN..............75 Watchdog..............77 Wi-Fi..............79 Common settings............79 Basic Settings............80 Security Settings............81 MAC Filter...............84 Station List.............86 WPS..............87 Using WPS Function via Web-based Interface......89 Using WPS Function without Web-based Interface......89...
  • Page 4 DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch User Manual System..............125 Administrator Password..........125 Configuration............126 System Log..............127 Firmware Upgrade............129 NTP Client..............130 Ping..............131 Chapter 5. Operation Guidelines........132 Supported USB Modems............132 Safety Instructions............133 Wireless Installation Considerations........134 Creating Two Connections on One Channel........135 ADSL WAN Connections............135 Ethernet WAN Connections..........136...

  • Page 5: Chapter 1. Introduction

    Chapter 2 gives an overview of the router's hardware and software features and describes its appearance and the package contents. Chapter 3 explains how to install the router DSL-2750U and configure a PC in order to access its web-based interface.

  • Page 6: Chapter 2. Overview

    You can configure and manage the settings of DSL-2750U via the user-friendly web-based interface (the interface is available in several languages). 1 Not included in the delivery package. D-Link does not guarantee compatibility with all USB modems. Please, refer to the Supported USB Modems section, page 132.

  • Page 7: Specifications

    DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Overview User Manual Specifications Interfaces: ADSL: 1 RJ-11 port • LAN: 4 RJ-45 10/100BASE-TX Fast Ethernet ports with auto-MDI/MDIX • WLAN: built-in 802.11b, g, and n wireless interface • USB: USB 2.0 type A port.
  • Page 8 DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Overview User Manual WAN Connection Types: • ADSL: • ◦ PPPoE ◦ PPPoA ◦ IPoA ◦ Static IP ◦ Dynamic IP ◦ Bridge. Ethernet: • ◦ PPPoE ◦ Static IP ◦ Dynamic IP ◦...
  • Page 9 DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Overview User Manual Network Protocols and Functions: Static IP routing • NAT (Network Address Translation) • DHCP server/client/relay • DNS relay • DDNS • UPnP • Support of VLAN • IGMP proxy •...
  • Page 10 DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Overview User Manual USB Storage: File browser • Print server • Shared access to USB storage (Samba). • Configuration and Management: Multilingual web-based interface for configuration and management • Access via TELNET •...

  • Page 11: Product Appearance

    DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Overview User Manual Product Appearance Front Panel Figure 1. Front panel view. Mode Description The router is powered on. Solid green The router is powered off. Power No light A malfunction of the router.

  • Page 12: Back Panel

    DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Overview User Manual Back Panel Figure 2. Back panel view. Port Description A DSL port to connect the router to the telephone line. 4 Ethernet ports to connect Ethernet devices. One port can be used to connect to a LAN 1-4 private Ethernet line.

  • Page 13: Delivery Package

    • The “User Manual” and “Quick Installation Guide” documents in Russian and English are available on D-Link website (see ftp.dlink.ru/pub/ADSL/DSL-2750U/Description/). Using a power supply with a different voltage rating than the one included will cause damage and void the warranty for this product.

  • Page 14: Chapter 3. Installation And Connection

    Please, read this manual prior to installing the device. Make sure that you have all the necessary information and equipment. Operating System Configuration of the multifunction 3G/ADSL/Ethernet router DSL-2750U (hereinafter referred to as “the router”) is performed via the built-in web-based interface. The web-based interface is available from any operating system that supports a web browser.

  • Page 15: Connecting To Pc

    DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Installation and Connection User Manual Connecting to PC PC with Ethernet Adapter 1. Make sure that your PC is powered off. 2. Connect an Ethernet cable between any of four Ethernet ports located on the back panel of the router and the Ethernet port of your PC.

  • Page 16: Obtaining Ip Address Automatically In Os Windows Xp

    DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Installation and Connection User Manual Obtaining IP Address Automatically in OS Windows XP 1. Click the Start button and proceed to the Control Panel > Network and Internet Connections > Network Connections window.
  • Page 17 DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Installation and Connection User Manual 3. In the Local Area Connection Properties window, on the General tab, select the Internet Protocol (TCP/IP) line. Click the Properties button. Figure 4. The Local Area Connection Properties window.
  • Page 18 DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Installation and Connection User Manual 4. Select the Obtain an IP address automatically and Obtain DNS server address automatically radio buttons. Click the OK button. Figure 5. The Internet Protocol (TCP/IP) Properties window.

  • Page 19: Obtaining Ip Address Automatically In Os Windows 7

    DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Installation and Connection User Manual Obtaining IP Address Automatically in OS Windows 7 1. Click the Start button and proceed to the Control Panel window. 2. Select the Network and Sharing Center section. (If the Control Panel has the category...
  • Page 20 DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Installation and Connection User Manual 3. In the menu located on the left part of the window, select the Change adapter settings line. Figure 7. The Network and Sharing Center window. Page 20 of 138...
  • Page 21 DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Installation and Connection User Manual 4. In the opened window, right-click the relevant Local Area Connection icon and select the Properties line in the menu displayed. Figure 8. The Network Connections window.
  • Page 22 DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Installation and Connection User Manual 5. In the Local Area Connection Properties window, on the Networking tab, select the Internet Protocol Version 4 (TCP/IPv4) line. Click the Properties button. Figure 9. The Local Area Connection Properties window.
  • Page 23 DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Installation and Connection User Manual 6. Select the Obtain an IP address automatically and Obtain DNS server address automatically radio buttons. Click the OK button. Figure 10. The Internet Protocol Version 4 (TCP/IPv4) Properties window.

  • Page 24: Pc With Wi-Fi Adapter

    DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Installation and Connection User Manual PC with Wi-Fi Adapter 1. To connect via 3G network: connect your USB modem to the USB port located on the back panel of the router. If you need to connect or change a USB modem to another one when the router is powered on, power off the device, connect the modem to the USB port, and power on the router.

  • Page 25: Configuring Wi-Fi Adapter In Os Windows Xp

    DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Installation and Connection User Manual Configuring Wi-Fi Adapter in OS Windows XP 1. Click the Start button and proceed to the Control Panel > Network and Internet Connections > Network Connections window.

  • Page 26: Configuring Wi-Fi Adapter In Os Windows 7

    DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Installation and Connection User Manual Configuring Wi-Fi Adapter in OS Windows 7 1. Click the Start button and proceed to the Control Panel window. 2. Select the Network and Sharing Center section. (If the Control Panel has the category...
  • Page 27 User Manual 6. In the opened window, in the list of available wireless networks, select the wireless network DSL-2750U and click the Connect button. Figure 14. The list of available networks. 7. Wait for about 20-30 seconds. After the connection is established, the network icon will be displayed as the signal level scale.

  • Page 28: Connecting To Web-Based Interface

    2. In the address bar of the web browser, enter the IP address of the router (by default, the following IP address is specified: 192.168.1.1). Press the Enter key. Figure 15. Connecting to the web-based interface of the DSL-2750U device. 3. On the opened page, enter the username (login) and password for the administrator account (by default, the following username and password are specified: admin, admin).
  • Page 29 To get back to the quick settings page from any Wizard or web-based interface menu section, left- click the D-Link logo in the top left corner of the page. To configure all parameters of the router independently without the Wizards, click the Configure manually button.
  • Page 30 DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Installation and Connection User Manual After clicking the button the system statistics page opens. The page displays general information on the router and its software (the version and the date of the firmware, the IP address of the device, the name of the WLAN, etc.), and data on the DSL connection state.
  • Page 31 DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Installation and Connection User Manual The web-based interface of the router is multilingual. Select a needed language from the menu displayed when the mouse pointer is over the Language caption. You can change the language of the web-based interface in any menu item.

  • Page 32: Saving And Restoring Settings

    DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Installation and Connection User Manual Saving and Restoring Settings Note that you should regularly save the changes of the router's settings to the non- volatile memory. The router's web-based interface displays the notification on unsaved changes at the top of the page.

  • Page 33: Chapter 4. Configuring Via Web-Based Interface

    DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual CHAPTER 4. CONFIGURING WEB-BASED INTERFACE Wizards Internet Setup Wizard To configure connection to the Internet, click the Connect to internet button. Figure 22. Configuring connection to the Internet.
  • Page 34 DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual Figure 24. The page for selecting the connection type. On the opened page, select the needed choice of the radio button and click the Next button.

  • Page 35: Pppoe Or Pppoa Connection

    DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual PPPoE or PPPoA Connection Figure 25. Configuring PPPoE WAN connection. In the Name field, specify a name for the connection for easier identification and click the Next button.
  • Page 36 DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual If authorization is not required, select the Without authorization checkbox. If needed, specify additional settings for your PPPoE or PPPoA WAN connection. Figure 27. Configuring PPPoE WAN connection.
  • Page 37 DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual Parameter Description Select the checkbox if you want the router to keep you connected to your ISP even when the connection has been inactive for a specified Keep Alive period of time.
  • Page 38 DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual Parameter Description Select the checkbox to allow multicast traffic from the external Enable IGMP Multicast network (e.g. video streaming) to be received. Select the checkbox if you want one WAN IP address to be used for all computers of your LAN.

  • Page 39: Ipoa Or Static Ip Connection

    DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual IPoA or Static IP Connection Figure 30. Configuring Static IP WAN connection. In the Name field, specify a name for the connection for easier identification and click the Next button.
  • Page 40 DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual Click the Next button to continue. If needed, change the connection settings available in the Miscellaneous section. Figure 32. Configuring Static IP WAN connection. Parameter Description...
  • Page 41 DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual Parameter Description Allow to create several Select the checkbox to allow the router to use several untagged connections assigned connections. to this port Select the checkbox to allow the router to use tagged VLAN Use VLAN connections.

  • Page 42: Dynamic Ip Connection

    DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual Dynamic IP Connection Figure 34. Configuring Dynamic IP WAN connection. In the Name field, specify a name for the connection for easier identification and click the Next button.
  • Page 43 DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual If needed, change the connection settings available in the Miscellaneous section. Figure 36. Configuring Dynamic IP WAN connection. Parameter Description Select the checkbox to allow multicast traffic from the external Enable IGMP Multicast network (e.g.
  • Page 44 DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual Parameter Description Allow to create several Select the checkbox to allow the router to use several untagged connections assigned connections. to this port Select the checkbox to allow the router to use tagged VLAN Use VLAN connections.

  • Page 45: Bridge Connection

    DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual Bridge Connection Figure 38. Configuring Bridge WAN connection. In the Name field, specify a name for the connection for easier identification and click the Next button.
  • Page 46 DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual If needed, change the connection settings available in the VLAN section. Figure 40. Configuring Bridge WAN connection. Parameter Description Allow to create several Select the checkbox to allow the router to use several untagged connections assigned connections.

  • Page 47: 3G Connection

    DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual 3G Connection Figure 41. Configuring 3G WAN connection. In the Name field, specify a name for the connection for easier identification and click the Next button.
  • Page 48 DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual In the Mode drop-down list, leave the auto value in order to let the router connect automatically to an available type of network, or select a needed value from the drop-down list. For GSM USB modems only.
  • Page 49 DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual If needed, change the connection settings available in the Miscellaneous section. Parameter Description Select the checkbox to allow multicast traffic from the external Enable IGMP Multicast network (e.g.

  • Page 50: Site Setup Wizard

    DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual Site Setup Wizard To create a virtual server for redirecting incoming Internet traffic to a specified IP address in the LAN, click the Host site button.

  • Page 51: Wi-Fi Setup Wizard

    DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual Wi-Fi Setup Wizard To specify all needed settings for your wireless network, click the Configure Wi-Fi button. Figure 45. The page for enabling/disabling the wireless LAN.
  • Page 52 DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual On the next page, you can modify security settings of the WLAN. By default, the Open network authentication type with no encryption is specified for the WLAN.
  • Page 53 DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual When the Open value is selected, the WEP Encryption settings section is displayed: Figure 48. The Open value is selected from the Network Authentication drop-down list.
  • Page 54 DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual When the WPA-PSK or WPA2-PSK value is selected, the WPA Encryption settings section is displayed: Figure 49. The WPA2-PSK value is selected from the Network Authentication drop-down list.

  • Page 55: Status

    DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual Status The pages of this section display data on the current state of the router: network statistics • DSL connection status • active WAN connections •...

  • Page 56: Dsl Status

    DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual DSL Status The information shown on the tabs of the Status / DSL status page can be used for troubleshooting and diagnosing connection problems. Figure 51. The Status / DSL status page.

  • Page 57: Wan Status

    DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual WAN Status The Status / WAN status page displays active WAN connections. Figure 52. The Status / WAN status page. Page 57 of 138...

  • Page 58: Dhcp

    DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual DHCP The Status / DHCP page displays the information on computers that have been identified by hostnames and MAC addresses and have got IP addresses from the DHCP server of the device, as well as the IP address expiration periods (the lease time).

  • Page 59: Routing Table

    DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual Routing Table The Status / Routing table page displays the information on routes. The table contains destination IP addresses, gateways, subnet masks, and other data. Figure 54. The Status / Routing table page.

  • Page 60: Lan Clients

    DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual LAN Clients On the Status / LAN clients page, you can view data on network devices connected to the router. The page displays devices connected to the wireless network of the router, devices connected to the built-in switch of the router, and devices accessing the web-based interface of the router.

  • Page 61: Net

    DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual In this menu you can configure basic parameters of the router's local area network and configure connection to the Internet (a WAN connection). On the Net / WAN page, you can create and edit connections used by the router.

  • Page 62: Creating Adsl Wan Connection

    DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual Creating ADSL WAN Connection Figure 57. The page for creating a new connection. The General settings, ATM and VLAN sections. Page 62 of 138...
  • Page 63 DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual Parameter Description General settings Provider Leave the Manually value. A type of network protocol to be used by the connection. Available values: PPPoE • PPPoA •...
  • Page 64 DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual Parameter Description sent in an effort to minimize lag or jitter caused by traffic inconsistencies. When you select this value from the drop-down list, the Peak Cell Rate field is displayed. Specify a required value (in cells per second).
  • Page 65 DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual Parameter Description An identifier for the VLAN. The field is displayed when the Use VLAN ID VLAN checkbox is selected. A priority tag for the type of traffic transmitted. The field is VLAN priority displayed when the Use VLAN checkbox is selected.
  • Page 66 DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual The PPP section is displayed for the PPPoE and PPPoA connection types. Figure 59. The page for creating a new connection. The PPP section. Parameter Description Username A username (login) to access the Internet.
  • Page 67 DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual Parameter Description Select the checkbox if you want the router to establish connection to the Internet on demand. In the Maximum idle time field, specify a...

  • Page 68: Creating Ethernet Wan Connection

    DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual Creating Ethernet WAN Connection Prior to creating an Ethernet WAN connection, specify a LAN port that will be used as the WAN port (see the Interface Grouping section, page 95).
  • Page 69 DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual Parameter Description VLAN (The section is displayed, if the VLAN MUX Mode choice of the Ethernet WAN type radio button is selected on the Advanced / Interface grouping page.)
  • Page 70 DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual The PPP section is displayed for the PPPoE connection type. Figure 63. The page for creating a new connection. The PPP section. Parameter Description Username A username (login) to access the Internet.
  • Page 71 DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual Parameter Description Select the checkbox if you want the router to establish connection to the Internet on demand. In the Maximum idle time field, specify a...

  • Page 72: Creating 3G Wan Connection

    DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual Creating 3G WAN Connection If the PIN code check is enabled for the SIM card inserted into your USB modem, then prior to creating a 3G WAN connection, proceed to the USB modem menu and enter the PIN code on the page displayed (see the USB Modem section, page 115).
  • Page 73 DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual Figure 66. The page for creating a new connection. The PPP and Miscellaneous sections. Parameter Description Username A username (login) to connect to the network of the operator.
  • Page 74 DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual Parameter Description Select the checkbox if you want the router to keep you connected to the network of your operator even when the connection has been Keep Alive inactive for a specified period of time.

  • Page 75: Lan

    DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual To configure the router's local interface, proceed to the Net / LAN page. Figure 67. The page for configuring the local interface. If needed, edit the basic parameters of the local interface.
  • Page 76 DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual To create a MAC-IP pair, click the Add button and specify the following parameters: Parameter Description An IP address which will be assigned to the device with the IP address specified MAC address.

  • Page 77: Watchdog

    DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual Watchdog On the Net / Watchdog page, you can enable the WAN backup function, which provides you with uninterrupted access to the Internet. When your main connection breaks down, the router activates the backup connection;...
  • Page 78 DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual Parameter Description An IP address that the router will check for availability via ICMP IP address for checks ping mechanism. Timeout between A time period (in seconds) between attempts to establish the main connect attempts connection.

  • Page 79: Wi-Fi

    DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual Wi-Fi In this menu you can specify all needed settings for your wireless network. Common settings On the Wi-Fi / Common settings page, you can enable your wireless local area network (WLAN).

  • Page 80: Basic Settings

    (It is recommended not to select this checkbox in order to simplify initial configuration of your WLAN.) A name for the WLAN. By default, the value DSL-2750U is SSID specified. It is recommended to specify another name for the network upon initial configuration (use digits and Latin characters).

  • Page 81: Security Settings

    DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual Security Settings On the Wi-Fi / Security settings page, you can modify security settings of the WLAN. Figure 71. The default security settings. By default, the Open network authentication type with no encryption is specified for the WLAN.
  • Page 82 DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual When the Open value is selected, the WEP Encryption settings section is displayed: Figure 72. The Open value is selected from the Network Authentication drop-down list.
  • Page 83 DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual When the WPA-PSK or WPA2-PSK value is selected, the WPA Encryption settings section is displayed: Figure 73. The WPA2-PSK value is selected from the Network Authentication drop-down list.

  • Page 84: Mac Filter

    DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual MAC Filter On the Wi-Fi / MAC Filter page, you can define a set of MAC addresses of devices which will be allowed to access the WLAN, or define MAC addresses of devices which will not be allowed to access the WLAN.
  • Page 85 DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual To add a MAC address to which the selected filtering mode will be applied, proceed to the MAC addresses tab. Figure 75. The tab for adding a MAC address.

  • Page 86: Station List

    DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual Station List On the Wi-Fi / Station List page, you can view the list of wireless devices connected to the router. Figure 76. The list of the router's wireless clients.

  • Page 87: Wps

    DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual On the Wi-Fi / WPS page, you can enable the function for secure configuration of the WLAN and select a method used to easily add wireless devices to the WLAN.
  • Page 88 DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual To activate the WPS function, select the WPS Enable checkbox and click the Change button. When the checkbox is selected, the Information and Connection sections are available on the page.

  • Page 89: Using Wps Function Via Web-Based Interface

    DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual Using WPS Function via Web-based Interface To add a wireless device via the PIN method of the WPS function, follow the next steps: 1. Select the WPS Enable checkbox.
  • Page 90 DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual Later you will be able to add wireless devices to the WLAN by pressing the WPS button of the router. 1. Select the PBC method in the software of the wireless device that you want to connect to the router's WLAN.

  • Page 91: Additional Settings

    DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual Additional Settings On the Wi-Fi / Additional settings page, you can define additional parameters for the router's WLAN. Changing parameters presented on this page may negatively affect your WLAN! Figure 78.

  • Page 92: Advanced

    DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual Advanced In this menu you can configure advanced settings of the router: enable and configure the SNMP agent • enable the UPnP function • define interface groups and allow the router to connect to a private Ethernet line •...

  • Page 93: Snmp

    DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual SNMP On the Advanced / SNMP page, you can enable and configure the SNMP agent. The agent is used to collect data on the state of the router and manage the device via the SNMP protocol.

  • Page 94: Upnp

    DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual UPnP On the Advanced / UPnP page, you can enable and disable the UPnP function. UPnP is a set of networking protocols designed for automatic configuration of network devices. The UPnP function performs automatic configuration of the device's parameters for network applications requiring an incoming connection to the router.

  • Page 95: Interface Grouping

    DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual Interface Grouping On the Advanced / Interface grouping page, you can assign virtual PVC connections to the router's ports (create groups of interfaces), which allows distinguishing different types of traffic.
  • Page 96 DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual To create a new rule for interface grouping (a group of ports), click the Add group button (the button is not displayed if there is no WAN connection in the system).

  • Page 97: Ddns

    DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual DDNS On the Advanced / DDNS page, you can define parameters of the DDNS service, which allows associating a domain name with dynamic IP addresses. Figure 83. The Advanced / DDNS page.

  • Page 98: Dns

    DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual On the Advanced / DNS page, you can add DNS servers to the system. Figure 85. The Advanced / DNS page. DNS servers are used to determine the IP address from the name of a server in Intranets or the Internet (as a rule, they are specified by an ISP or assigned by a network administrator).

  • Page 99: Routing

    DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual Routing On the Advanced / Routing page, you can add static routes (routes for networks that are not connected directly to the device but are available through the interfaces of the device) into the system.
  • Page 100 DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual To edit an existing route, select the needed route in the table. On the opened page, change the needed parameters and click the Save button. To remove an existing route, select the needed route in the table. On the opened page, click the Delete button.

  • Page 101: Rip

    DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual On the Advanced / RIP page, you can enable RIP. RIP is a routing protocol designed for automatic update of the routing table on the basis of the network status information.

  • Page 102: Adsl

    DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual ADSL The Advanced / ADSL page includes the set of ADSL standards that should be defined by an ISP. Contact your ISP to set proper parameters. Select the relevant options and click the Change button.

  • Page 103: Remote Access

    DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual Remote Access On the Advanced / Remote access page, you can configure remote access to the web-based interface of the router. By default, the access from external networks to the router is closed. If you need to allow access to the router from the external network, create relevant rules.
  • Page 104 DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual Parameter Description An external port of the router. You can specify only one port. The Public port field is displayed when the HTTP value is selected from the Protocol drop-down list.

  • Page 105: Firewall

    DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual Firewall In this menu you can configure the firewall of the router: add rules for IP filtering • create virtual servers • define a DMZ •...
  • Page 106 DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual You can specify the following parameters: Parameter Description IP filter rule editing Name A name for the rule for easier identification. A protocol for network packet transmission. Select a value from the drop-down list.
  • Page 107 DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual Parameter Description A port of the destination IP address. You can specify one port, Destination several ports separated by a comma, or a range of ports separated by a colon.

  • Page 108: Virtual Servers

    DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual Virtual Servers On the Firewall / Virtual servers page, you can create virtual servers for redirecting incoming Internet traffic to a specified IP address in the local area network.
  • Page 109 DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual Parameter Description A port of the router from which traffic is directed to the IP address specified in the Private IP field. Specify the start and the end value Public port (begin)/ for the port range.

  • Page 110: Dmz

    DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual A DMZ is a host or network segment located “between” internal (local) and external (global) networks. In the router, the DMZ implements the capability to transfer a request coming to a port of the DSL router from the external network to a specified host of the internal network.

  • Page 111: Application Rules

    DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual Application Rules On the Firewall / Application rules page, you can define rules for the Port Triggering function. Figure 97. The Firewall / Application rules page.
  • Page 112 DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual You can specify the following parameters: Parameter Description Application rule editing Rules name A name for the rule for easier identification. Interface A WAN connection to which this rule will be assigned.

  • Page 113: Mac Filter

    DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual MAC Filter The MAC-address-based filtering allows forwarding and blocking traffic subject to the source and destination MAC addresses. MAC-address-based filtering is active only when the device is configured as a transparent bridge (the Bridge mode).
  • Page 114 DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual On the opened page, specify the needed parameters. Figure 101. The page for adding a rule for MAC-address-based filtering. Parameter Description The MAC address of the source host. To choose a device...

  • Page 115: Usb Modem

    DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual USB Modem This menu is designed to operate USB modems. If the PIN code check for the SIM card inserted into your USB modem is not disabled, then upon...

  • Page 116: Pin

    DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual On the USB modem / PIN page, you can change the PIN code of the identification card inserted into your USB modem, disable or enable the check of the PIN code.

  • Page 117: Usb Storage

    DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual USB Storage Information On the USB storage / Information page, you can view data on the USB storage connected to the router. Figure 105. The USB storage / Information page.

  • Page 118: Filebrowser

    DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual Filebrowser On the USB storage / Filebrowser page, you can view the content of your USB storage connected to the router and remove separate folders and files from the USB storage.

  • Page 119: Print Server

    DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual Print Server On the USB storage / Print-server page, you can configure the router as a print server. Being configured in this way, the router will allow your LAN users to share the printer connected to the USB port of the router.

  • Page 120: Samba

    DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual Samba On the USB storage / Samba page, you can create accounts used to access the USB storage connected to the router. Figure 108. The USB storage / Samba page.

  • Page 121: Control

    DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual Control This menu is designed to create restrictions on access to the Internet for users of your LAN: forbid access for specified computers and limit access to certain web sites.
  • Page 122 DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual You can specify the following parameters: Parameter Description Parent control editing Select the checkbox to enable the rule. A name for the rule for easier identification. You can specify any Name name.

  • Page 123: Url Filter

    DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual URL Filter On the Control / URL filter page, you can specify restrictions on access to certain web sites. Figure 112. The Control / URL filter page. The Configuration tab.
  • Page 124 DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual Figure 114. The page for adding an address for the URL filter. Enter a URL address in the URL address field, specify a port (as usual, you need to specify port 80 for HTTP), then click the Save button.

  • Page 125: System

    DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual System In this menu you can do the following: change the password used to access the router's settings • save the current settings to the non-volatile memory •...

  • Page 126: Configuration

    DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual Configuration On the System / Configuration page, you can save the changed settings to the non-volatile memory, restore the factory defaults, backup the current configuration, or restore the router's configuration from a previously created file.

  • Page 127: System Log

    DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual System Log On the System / System log page, you can set the system log options and configure sending the system log to a remote host.
  • Page 128 DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual Control Description The IP or URL address of the host from the local or global network, Server to which the system log will be sent. A port of the host specified in the Server field. By default, the Port value 514 is specified.

  • Page 129: Firmware Upgrade

    DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual Firmware Upgrade On the System / Firmware upgrade page, you can upgrade the firmware of the router. Upgrade the firmware only when the router is connected to your PC via a wired connection.

  • Page 130: Ntp Client

    DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual NTP Client On the System / NTP client page, you can configure automatic synchronization of the system time with a time server on the Internet. Figure 120. The System / NTP client page.

  • Page 131: Ping

    DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Configuring via Web-based Interface User Manual Ping On the System / Ping page, you can check availability of a host from the local or global network via the Ping utility. The Ping utility sends echo requests to a specified host and receives echo replies.

  • Page 132: Chapter 5. Operation Guidelines

    DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Operation Guidelines User Manual CHAPTER 5. OPERATION GUIDELINES Supported USB Modems GSM modems: Huawei E150 • Huawei E1550 • Huawei E160G • Huawei E169G • Huawei E220 • ZTE MF112 • ZTE MF626 •...

  • Page 133: Safety Instructions

    DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Operation Guidelines User Manual Safety Instructions Place your router on a flat horizontal surface or mount the router on the wall (the mounting holes are located on the bottom panel of the device). Make sure that the router is provided with sufficient ventilation.

  • Page 134: Wireless Installation Considerations

    RF noise in your home or office. To maximize your wireless range, follow the guidelines below. 1. Keep the number of walls and ceilings between the DSL-2750U device and other network devices to a minimum – each wall or ceiling can reduce your wireless network range by 3- 90 feet (1-30 meters).

  • Page 135: Creating Two Connections On One Channel

    DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Operation Guidelines User Manual Creating Two Connections on One Channel ADSL WAN Connections In some cases, it is necessary to assign two WAN connections (of the Bridge/Static IP/Dynamic IP type) to one virtual channel (that is, to specify the same values of the VPI/VCI).

  • Page 136: Ethernet Wan Connections

    DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Operation Guidelines User Manual Ethernet WAN Connections In some cases, it is necessary to assign two WAN connections to one physical interface. For example, your private Ethernet line is connected to the LAN 3 port of the router. The ISP provides the IPTV service.

  • Page 137: Chapter 6. Abbreviations And Acronyms

    DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Abbreviations and Acronyms User Manual CHAPTER 6. ABBREVIATIONS AND ACRONYMS Third Generation Advanced Encryption Standard Address Resolution Protocol BSSID Basic Service Set Identifier CDMA Code Division Multiple Access Cyclic Redundancy Check DDNS...
  • Page 138 DSL-2750U 3G/ADSL/Ethernet Router with Wi-Fi and Built-in Switch Abbreviations and Acronyms User Manual Personal Identification Number PPPoA Point-to-Point Protocol over ATM PPPoE Point-to-point protocol over Ethernet Pre-shared key PIN Unlock Key Quality of Service R-UIM Removable User Identity Module Routing Information Protocol...

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