User Guide DSL-N55U Dual-band Wi-Fi ADSL Modem Router The ultra-thin and stylish DSL-N55U features a 2.4GHz and 5GHz dual bands for an unmatched concurrent wireless HD streaming; SMB server, UPnP AV server, and FTP server for 24/7 file sharing; a capability to handle 300,000 sessions; and the ASUS Green Network Technology, which provides up to 70% power-saving solution.
E6895 First Edition November 2011 Copyright © 2011 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 Upgrading the firmware...................................................................36 Restoring/Saving/Uploading settings.........................................37 Sharing files from a USB storage device......................................38 Setting up your network printer...........................................................41 4 Using the utilities Device Discovery........................................................................................
1 A quick look Package contents DSL-N55U Network cable AC adapter Phone cable Warranty card Quick Start Guide Support CD (User Manual/utilities) Splitter (varies with regions) 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 2.4GHz LED & 5GHz LEDs Off: No 2.4GHz or 5GHz signal.
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/1000BaseTX) • IEEE 802.11a/b/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 802.11a/b/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-N55U, 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). Wired connection Network cable To set up your ADSL router via wired connection: 1.
Before you proceed NOTE: Before configuring your DSL-N55U, 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-N55U 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.
5. Change your network name (recommended) and enter the password to set up your secure 2.4GHz and 5GHz wireless environments.
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.
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: 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.
Setting up the wireless security settings To protect your wireless network from unauthorized access, you need to configure its security settings. To set up the wireless security settings: 1. Key in 192.168.1.1 on your web browser. 2. On the login screen, key in the default user name (admin) and password (admin), then click OK. The ADSL router’s web GUI launches. 3.
5GHz security settings 4. On the Wireless name (SSID) field, key in a unique name for your wireless network. 5. From the Security Level dropdown list, select the encryption method for your wireless network. IMPORTANT! The IEEE 802.11n standard prohibits using High Throughput with WEP or WPA-TKIP as the unicast cipher. If you use these encryption methods, your data rate will drop to IEEE 802.11g 54Mbps connection. 6. Key in your security passkey. 7. Click Apply when done.
Managing your network clients To manage your network clients: 1. Launch the ADSL router’s web GUI. 2. On the Network Map screen, select the Client Status icon to display the information about your network clients. 3. In the Priority field under the Client List, you can set the priority packet for each client as Normal, High, or Low. NOTE: You can also delete the priority settings from Advanced Setting > WAN > QoS tab. 4. To block a client’s access to your network, select the client and click block.
Monitoring your USB device The ASUS ADSL router provides two USB 2.0 ports for connecting USB devices such as a USB storage device and USB printer, to allow you to monitor the working environment, share files, and printer with clients in your network. NOTE: To use this feature, you need to plug a USB storage device, such as a USB hard disk or USB flash drive, to the USB 2.0 port on the rear panel of your ADSL router. Ensure that the USB storage device is formatted and partitioned properly.
3. On the Media Server field, click GO to allow UPnP (Universal Plug and Play) devices such as PS3 to access the multimedia files in your USB disk. NOTE: For more details, refer to the next section Using your router as a UPnP Media Server in this user manual. 4. On the AiDisk Wizard field, click GO to set up an FTP server for Internet file sharing. NOTES: • For more details, refer to the section Using AiDisk for an FTP Server and Network Neighborhood setup in this user manual.
Using AiDisk for an FTP server and Network Neighborhood setup AiDisk allows you to set up an FTP server and share the content of a USB disk to the clients in your network. NOTE: Before using AiDisk, ensure that you have inserted a USB disk into the USB port of your ADSL router. To use AiDisk: 1. Click AiDisk from the navigation menu at the left side of your screen. 2. From the Welcome to AiDisk wizard screen, click GO.
3. Select the access rights that you want to assign to the clients accessing your shared data. 4. To create your own domain for your FTP site via the ASUS DDNS services, select I will use the service and accept the Terms of service and key in your domain name. 5. Click Next to finish the setup. 6. When done, click Finish. 7. To access the FTP site that you created, launch a web browser or a third-party FTP client utility and key in the ftp link (ftp://) you have previously created.
Using your router as a UPnP Media Server Your ADSL router allows UPnP (Universal Plug and Play) multimedia devices, such as PS3 and XBox 360, to access multimedia files from the USB disk connected to your ADSL router. NOTE: Before using the UPnP Media Server function, install a wireless adapter on your UPnP device. To use your router as a UPnP Server: 1. Click Media Server from the navigation menu at the left side of your screen. 2. Select Enabled.
Managing EZQoS Bandwidth EzQoS Bandwidth Management allows you to set the bandwidth priority and manage the network traffic. Setting up the bandwidth priority To set up the bandwidth priority: 1. Click EzQoS Bandwidth Management from the navigation menu at the left side of your screen. NOTE: Manually key in the uplink speed to prevent the router from detecting the wrong uplink speed from an unstable network.
2. Click each of these four applications to set the bandwidth priority: Icon Description Gaming Blaster The router handles gaming traffic at first priority. Internet Application The router handles the e-mail, web browsing and other Internet applications traffic at first priority. AiDisk The router handles at first priority the traffic of downloading/ uploading data to/from the FTP server. Voip/Video Streaming The router handles the audio/video traffic at first priority. 3.
Monitoring the network traffic The Traffic Monitor page allows you to assess the bandwidth usage and speed of your Internet, LAN, Wired, WLAN (2.4GHz or 5GHz) connections. To monitor the network traffic: 1. Click EzQoS Bandwidth Management > Traffic Monitor tab.. 2. Select from any of these services/network types that you want to monitor: Internet, LAN, Wired, Wireless (2.4GHz), and Wireless (5GHz). 3. From the dropdown list, select Real-time as the monitoring type.
Configuring the Advanced settings Advanced Setting allows you to configure the advanced features of your ADSL router. Setting up the DHCP Server You may enable the DHCP Server function in your ADSL router so your network clients can automatically obtain IP addresses from your ADSL router. NOTE: The ASUS ADSL router can support up to 253 IP addresses for your network. To set up the DHCP server: 1. Click Advanced Setting from the navigation menu at the left side of your screen. 2.
3. In the Enable the DHCP Server? field, tick Yes. 4. In the IP Pool Starting Address field, key in the starting IP address. 5. In the IP Pool Ending Address field, key in the ending IP address. 6. In the Lease Time field, key in the time that the IP addresses expire and the ADSL router automatically assigns new IP Addresses for the network clients. IMPORTANT! • For the IP Pool Starting and Ending IP addresses, we recommend that you use: • IP address: 192.168.1.
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 from the navigation menu at the left side of your screen. 2. Under the Administration menu, click Firmware Upgrade. 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. Under the Administration menu, click Restore/Save/Upload Setting. 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.
Sharing files from a USB storage device Creating a user account You need to create user accounts before you can share the files or data in the USB storage device. To create a user account: 1. Click Advanced Setting > USB Application from the navigation menu at the left side of your screen. 2. Click Share with account, and click OK to enable the sharing feature. 3. Click the Add account icon . 4. In the Account and Password fields, key in the name and password of the client/computer in your network.
3. From the list of file folders, select the type of access rights that you want to assign for specific file folders: • R/W: Select this option to assign read/write access for a specific file folder. • R: Select this option to assign read only access for a specific file folder. • N one: Select this option if you do not want to share a specific file folder. 4. Click Apply to apply the changes. 5.
To share files via the FTP server: 1. Ensure that you have set up your FTP server through AiDisk. NOTE: For more details, refer to the section Using AiDisk for an FTP Server and Network Neighborhood setup in this user manual. 2. Enable the DDNS service for FTP server access. To do this, follow these steps: a. F rom the navigation menu, click Advanced > WAN > DDNS tab. b. In the Enable the DDNS Client? field, tick Yes. c. K ey in your User Name or E-mail Address and Password or DDNS key. d.
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/dsln55u.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.
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. Device Discovery Device Discovery is an ASUS WLAN utility that detects an ASUS ADSL router device, 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-N55U ADSL Router > Device Discovery.
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.
3. Key in the ADSL router’s default user name admin and password admin, then click Next. 4. Wait for a few minutes until your ADSL router finishes detecting your Internet connection type.
5. Key in the user name and password for your Internet connection type. 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).
6. 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.
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-N55U 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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