User Guide DSL-N12U 11N 300Mbps Wireless ADSL Modem Router
E7218 Second Edition February 2012 Copyright © 2012 ASUSTeK Computer Inc. All Rights Reserved. No part of this manual, including the products and software described in it, may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language in any form or by any means, except documentation kept by the purchaser for backup purposes, without the express written permission of ASUSTeK Computer Inc. (“ASUS”).
Table of contents 1 A quick look Package contents......................................................................................... 5 Your ADSL router.......................................................................................... 5 Mounting options........................................................................................ 7 2 Creating your network Positioning your router.............................................................................. 8 What you need.........
Table of contents Firmware Restoration................................................................................30 ADSL Setting Wizard..................................................................................31 Setting up your network printer...........................................................38 5 Troubleshooting Troubleshooting.........................................................................................42 ASUS DDNS Service.................................................
1 A quick look Package contents DSL-N12U Power adapter Support CD (User Manual/utilities) RJ-45 cable RJ-11 cable Quick Start Guide Warranty card NOTES: • If any of the items is damaged or missing, contact ASUS for technical inquiries and support. Refer to the ASUS Support Hotline list at the back of this user manual. • Keep the original packaging material in case you would need future warranty services such as repair or replacement.
1 Power LED Off: No power. On: Device is ready. Flashing slow: Rescue mode Flashing quick: WPS is processing. 2 ADSL LED Solid light: ADSL link is established. Flashing: No ADSL link or unable to establish ADSL link. 3 WAN LED Off: No power or no physical connection. On: Has physical connection to a wide area network (WAN). 4 LAN LED Off: No power or no physical connection. On: Has physical connection to a local area network (LAN). 5 Wi-Fi LED Off: No Wi-Fi signal. On: Wireless system is ready.
NOTES: • Use only the adapter that came with your package. Using other adapters may damage the device. • Specifications: DC Power adapter DC Input: +19V with max 1.58A current Operating Temperature 0~40oC Storage 0~70oC Operating Humidity 50~90% Storage 20~90% Mounting options Out of the box, the ASUS ADSL router is designed to sit on a raised flat surface like a file cabinet or book shelf. The unit may also be converted for mounting to a wall or ceiling. To mount the ASUS ADSL router: 1.
2 Creating your network Positioning your router For the best wireless signal transmission between the ADSL router and the network devices connected to it, ensure that you: • Place the ADSL router in a centralized area for a maximum wireless coverage for the network devices. • Keep the device away from metal obstructions and away from direct sunlight. • Keep the device away from 802.11g or 20MHz only Wi-Fi devices, 2.
What you need To set up your network, you need one or two computers that meet the following system requirements: • Ethernet RJ-45 (LAN) port (10Base-T/100Base-TX) • IEEE 802.11b/g/n wireless capability • An installed TCP/IP service • Web browser such as Internet Explorer, Firefox, Safari, or Google Chrome NOTES: • If your computer does not have built-in wireless capabilities, you may install an IEEE 802.11b/g/n WLAN adapter to your computer to connect to the network.
Connecting your devices IMPORTANT! • Use wired connection in setting up your ADSL router to avoid possible setup problems due to wireless uncertainty. • Before setting up your DSL-N12U, do the following: • Disconnect the cables/wires from your existing modem setup. If your modem has a backup battery, remove it as well. • Reboot your computer (recommended).
Before you proceed NOTE: Before configuring your DSL-N12U, do the steps described in this section for your host computer and network clients. Disable the proxy server, if enabled. Windows® 7 1. Click Start > Internet Explorer to launch the browser. 2. Click Tools > Internet options > Connections tab > LAN settings. 3. From the Local Area Network (LAN) Settings screen, untick Use a proxy server for your LAN. 4. Click OK when done.
MAC OS 1. From your Safari browser, click Safari > Preferences > Advanced > Change Settings... 2. From the Network screen, deselect FTP Proxy and Web Proxy (HTTP). 3. Cllick Apply Now when done. NOTE: Refer to your browser's help feature for details on disabling the proxy server.
Set the TCP/IP settings to automatically obtain an IP address. Windows® 7 1. Click Start > Control Panel > Network and Internet > Network and Sharing Center > Manage network connections. 2. Select Internet Protocol Version 4 (TCP/IPv4) or Internet Protocol Version 6 (TCP/IPv6), then click Properties. 3. To obtain the IPv4 IP settings automatically, tick Obtain an IP address automatically. To obtain the IPv6 IP settings automatically, tick Obtain an IPv6 address automatically. 4. Click OK when done.
MAC OS 1. Click the Apple icon located on the top left of your screen. 2. Click System Preferences > Network > Configure... 3. From the TCP/IP tab, select Using DHCP in the Configure IPv4 dropdown list. 4. Cllick Apply Now when done. NOTE: Refer to your operating system’s help and support feature for details on configuring your computer’s TCP/IP settings. Disable the dial-up connection, if enabled. Windows® 7 1. Click Start > Internet Explorer to launch the browser. 2.
Setting up your ADSL router 1. Before starting ADSL setting procedure, ensure that the ADSL indicator on DSL-N12U front panel becomes solid. 2. Launch your web browser. The QIS web page appears automatically and starts detecting your connection type, VPI/ VCI value and encapsulation mode. NOTE: If the QIS web page does not appear after you launched your web browser, disable the proxy settings on your web browser.
3. Key in the user name and password. Click Apply. If the QIS cannot detect your Internet connection type, click Manual Setting and set up the Internet connection manually. NOTES: • The PPPoE Internet connection type is used in this setup case. The setup screen varies with different Internet connection types. • Obtain the required information such as the user name and password from your Internet Service Provider (ISP).
4. The Internet connection setup is completed. • Click Going to Internet to surf the Internet. • C lick Simple Wireless Security Setup to configure the basic security settings including the SSID, authentication, and encryption methods for the ADSL router. (Recommended) • C lick Back to main page page to go back to the main page of the web GUI.
3 Configuring via the web GUI Logging into the web GUI Your ASUS ADSL router comes with an intuitive web graphics user interface (GUI) that allows you to easily configure its various features through a web browser such as Internet Explorer, Firefox, Safari, or Google Chrome. To log into the web GUI: 1. On your web browser such as Internet Explorer, Firefox, Safari, or Google Chrome, manually key in the ADSL router’s default IP address: 192.168.1.1 2.
NOTES: • For your network clients, ensure that you set the TCP/IP settings to obtain IP addresses automatically, disable the proxy server settings, disable the dial-up settings, and cancel the dial-up connection. • For more details, refer to the section Before you proceed in this user manual. 3. The ADSL router’s web GUI launches. Use the web GUI to configure various settings.
Using Wi-Fi Protected Setup (WPS) WPS (Wi-Fi Protected Setup) allows you to set up a secure and protected wireless network easily NOTES: • Ensure that you use a wireless LAN adapter with WPS function on your network clients. • Windows® operating systems and wireless LAN cards/ adapters that support WPS: 20 OS Support Wireless Adapter Support Windows Vista 32/64 Windows 7 32/64 Windows 2008 ASUS/Intel wireless LAN card (except WL167g and WL-160W) ASUS WL-167g v2 driver v.3.0.6.
To use WPS: 1. In the WPS field, click the red button to launch the WPS Push Button Configuration. NOTE: You may also press the WPS button on your ADSL router to launch the WPS Push Button Configuration. 2. Follow the onscreen instructions to complete the wireless network setup. IMPORTANT! Obtain the necessary information about your Internet connection type from your ISP.
Using the Network Map Network Map allows you to view the status and configure the connection settings of the Internet, system, and clients in your network. It enables you to quickly set up your Wide Area Network (WAN) using the Quick Internet Setup (QIS) feature.
Creating multiple SSID profiles The wireless router allows you to create multiple SSID profiles that meet various working scenarios. To create an SSID profile: 1. In the SSID field, click Add. 2. Configure the profile settings, then click Add.
Managing bandwidth with EzQoS EzQoS Bandwidth Management enables you to set the bandwidth priority and manage the network traffic. To set up the bandwidth priority: 1. Click EzQoS Bandwidth Management from the navigation menu at the left side of your screen. 2. Click each of these four applications to set the bandwidth priority: Icon Description Gaming Blaster The router handles gaming traffic at first priority.
Upgrading the firmware NOTE: Download the latest firmware from the ASUS website at http://www.asus.com. To upgrade the firmware: 1. Click Advanced Setting > Administration from the navigation menu at the left side of your screen. 2. Click the Firmware Upgrade tab. 3. In the New Firmware File field, click Browse to locate the new firmware on your computer. 4. Click Upload. The uploading process takes about three minutes.
Restoring/Saving/Uploading settings To restore/save/upload the settings: 1. Click Advanced Setting from the navigation menu at the left side of your screen. 2. Click the Restore/Save/Upload Setting tab. 3. Select the tasks that you want to do: • To restore to the default factory settings, click Restore, and click OK in the confirmation message. • To save the current system settings, click Save, and click Save in the file download window to save the system file in your preferred path.
4 Using the utilities NOTES: • Install the ADSL router's utilities from the bundled support CD. • If Autorun is disabled, run setup.exe from the root directory of the support CD. Installing the utilities To install the utilities: 1. Click Install...Utilities. 2. Click Next.
3. Click Next to accept the default destination folder or click Browse to specify another path. 4. Click Next to accept the default program folder or enter another name. 5. Click Finish when setup is completed.
Device Discovery Device Discovery is an ASUS WLAN utility that detects an ASUS Wireless ADSL Router and enables you to configure the device. To launch the Device Discovery utility: • From your computer’s desktop, click Start > All Programs > ASUS Utility > DSL-N12U Wireless ADSL Router > Device Discovery. • Click Configure to access the web GUI and configure the wireless router. • Click Search to search for ASUS wireless routers within range. • Click Exit to exit the application.
Firmware Restoration Firmware Restoration is used on an ASUS ADSL router that failed during its firmware upgrading process. It uploads the firmware that you specify. The process takes about three to four minutes. IMPORTANT: Launch the rescue mode before using the Firmware Restoration utility. To launch the rescue mode and use the Firmware Restoration utility: 1. Unplug the ADSL router from the power source. 2.
5. Specify a firmware file, then click Upload. NOTE: This is not a firmware upgrade utility and cannot be used on a working ASUS ADSL router. Normal firmware upgrades must be done through the web interface. Refer to Chapter 3: Configuring via the web GUI for more details. ADSL Setting Wizard ADSL Setting Wizard helps you to set up your ADSL settings and establish a secure wireless network. To use the ADSL Setup Wizard: 1.
2. Press the WPS button on your router until the Power indicator flashes three times per second. (Use only with a wireless client card with WPS function) Reset Power On/Off USB LAN4 LAN3 LAN2 LAN1 WPS On Off ADSL WPS button 3. On the ADSL Setting Wizard, click Next to continue. NOTES: • When running WPS, the Internet connection pauses briefly then reestablishes the connection.
4. Key in desired network name or SSID (service set identifier). When done, click Next. 5. Create and key in a passphrase consisting of 8-63 characters or use the automatically generated passphrase then click Next. A passphrase is a sentence, phrase, or sequence of alphanumeric characters used to generate a security key.
6. When finished, click Save or print settings for future reference or Save settings to a USB flash drive to add other devices to the network. Click Next to connect to the Internet. NOTE: For more details on adding devices to the network using a USB flash drive, refer to the section Adding network devices using a USB flash drive on the next page. 7. You have connected to the wireless router. If you want to configure the Internet (WAN) settings, click Quick Internet Setup.
8. For Internet (WAN) settings, refer to section Using the Quick Internet Setup (QIS) in Chapter 2 of this manual. If you are a Russian user, follow the onscreen instructions to finish the ADSL Internet (WAN) settings.
Adding network devices using a USB flash drive With the ADSL Setting Wizard, you can add devices to your network using a USB flash drive. To add network devices using a USB flash drive: 1. In the ADSL Setting Wizard, click Save settings to a USB flash drive. 2. Insert a USB flash drive into your computer's USB port, then select the drive from the dropdown list. When done, click Next.
3. Unplug the USB flash drive from your computer then insert it to the other computer that you want to add to your wireless network. 4. Locate SetupWireless.exe from the USB drive, and double-click to run it. Click Yes to add the computer to the wireless network. 5. Click OK to exit the Wireless Network Setup Wizard.
Setting up your network printer Use the Network Printer Setup utility to set up a USB printer on your ADSL router and allow network clients to access the USB printer. NOTES: • To check if your USB printer is compatible with your ASUS ADSL router, refer to the Plug-n-Share Disk Support List at http://event.asus.com/2009/networks/printersupport/ DSL-N12U.htm • The ADSL router's printer server function is not supported on Windows® 2000. To set up your USB Printer: 1.
2. Follow the onscreen instructions to set up your hardware, then click Next. 3. Wait for a few minutes for the initial setup to finish. Click Next.
4. Click Finish to complete the installation. 5. Follow the Windows® OS instructions to install the printer driver.
6. After the printer’s driver installation is completed, network clients can now use the printer.
5 Troubleshooting NOTE: If you encounter problems that are not mentioned in this chapter, contact the ASUS Technical Support. Troubleshooting I cannot access a web browser for configuring the router. • Delete the cookies and files in your web browser. To do this, follow these steps: 1. L aunch your web browser, then click Tools > Internet Options... 2. U nder Temporary Internet files, click Delete Cookies... and Delete Files...
Cannot find the router: • P ress the Reset button at the rear panel for more than five seconds. • C heck the setting in the wireless adapter such as SSID and encryption settings. • C heck if the wireless indicator on the front panel is off. Turn the wireless switch at the rear panel on/off. Cannot access the Internet via wireless LAN adapter. • Move the router closer to the wireless client. • Check whether the wireless adapter is connected to the correct ADSL router.
If the ADSL “LINK” light blinks continuously or stays off, Internet access is not possible - the Router is unable to establish a connection with the ADSL network. • Ensure that all your cables are all properly connected . • Disconnect the power cord from the ADSL or cable modem, wait a few minutes, then reconnect the cord. • If the ADSL light continues to blink or stays OFF, contact your ADSL service provider. Network name or encryption keys are forgotten.
ASUS DDNS Service DSL-N12U supports the ASUS DDNS service. When exchanging devices at the service center, if you have registered the ASUS DDNS service and want to keep the original domain name, data transfer is a must. Visit your local service center for more information. NOTES: • If there is no activity in the domain - such as reconfiguring the router or accessing the registered domain name - within 90 days, the system automatically deletes the registered information.
3. I have registered a domain name before and it has been working well until my friends told me that they could not access my domain name. Check the following: 1. The internet is working well. 2. The DNS server is working well. 3. The last time you updated the domain name. If there are still problems in accessing your domain name, contact the service center. 4. Can I register two domain names to separately access my http and ftp servers? No, you cannot.
Appendices Notices ASUS Recycling/Takeback Services ASUS recycling and takeback programs come from our commitment to the highest standards for protecting our environment. We believe in providing solutions for you to be able to responsibly recycle our products, batteries, other components, as well as the packaging materials. Please go to http://csr.asus. com/english/Takeback.htm for the detailed recycling information in different regions.
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