Observa Telecom TD851W User Manual
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Observa Telecom TD851W User Manual

150mbps wireless n adsl2+ modem router
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TD851W
150Mbps Wireless N ADSL2+ Modem Router
Rev: 1.0.0
1910010472

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  • Page 1 TD851W 150Mbps Wireless N ADSL2+ Modem Router Rev: 1.0.0 1910010472...
  • Page 2 COPYRIGHT & TRADEMARKS Specifications are subject to change without notice. is a registered trademark of TP-LINK TECHNOLOGIES CO., LTD. Other brands and product names are trademarks or registered trademarks of their respective holders. No part of the specifications may be reproduced in any form or by any means or used to make any derivative such as translation, transformation, or adaptation without permission from TP-LINK TECHNOLOGIES CO., LTD.
  • Page 3 FCC RF Radiation Exposure Statement This equipment complies with FCC RF radiation exposure limits set forth for an uncontrolled environment. This device and its antenna must not be co-located or operating in conjunction with any other antenna or transmitter. “To comply with FCC RF exposure compliance requirements, this grant is applicable to only Mobile Configurations.
  • Page 4 DECLARATION OF CONFORMITY For the following equipment: Product Description: 150Mbps Wireless N ADSL2+ Modem Router Model No.: TD851W Trademark: TP-LINK We declare under our own responsibility that the above products satisfy all the technical regulations applicable to the product within the scope of Council Directives:...

  • Page 5: Table Of Contents

    CONTENTS Package Contents ....................1 Chapter 1. Introduction ..................2 Product Overview ..................2 Main Features ..................2 Conventions ..................3 Chapter 2. Hardware Installation ................4 The Front Panel..................4 The Back Panel ..................5 Installation Environment ................6 Connecting the Modem Router..............6 Chapter 3. Quick Installation Guide ..............8 Configure PC ..................8 Login....................11 Chapter 4.
  • Page 6 4.4.3 SNMP ...................... 61 4.4.4 DNS ......................62 4.4.5 DDNS....................... 63 Firewall ....................64 4.5.1 MAC Filter ....................64 4.5.2 IP/Port Filter ..................... 66 4.5.3 URL Filter....................67 4.5.4 ACL......................68 Maintenance..................71 4.6.1 Update ..................... 71 4.6.2 Password ....................74 4.6.3 System Restart ..................74 4.6.4 Time......................

  • Page 7: Package Contents

    150Mbps Wireless N ADSL2+ Modem Router User Guide Package Contents The following contents should be found in your package: One TD851W 150Mbps Wireless N ADSL2+ Modem Router One Power Adapter for TD851W 150Mbps Wireless N ADSL2+ Modem Router Quick Installation Guide One RJ45 cable Two RJ11 cables...

  • Page 8: Chapter 1. Introduction

    The device is designed to provide a simple and cost-effective ADSL Internet connection for a private Ethernet or IEEE 802.11n/ IEEE 802.11g/ IEEE 802.11b wireless network. The TD851W connects to an Ethernet LAN or computers via standard Ethernet ports. The ADSL connection is made using ordinary telephone line with standard connectors. Multiple workstations can be networked and connected to the Internet using a single Wide Area Network (WAN) interface and single global IP address.

  • Page 9: Conventions

    Configuration backup/restore Diagnostic tools 1.3 Conventions The Router or device mentioned in this User Guide stands for TD851W without any explanations. Parameters provided in the pictures are just references for setting up the product, which may differ from the actual situation.

  • Page 10: Chapter 2. Hardware Installation

    TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Chapter 2. Hardware Installation 2.1 The Front Panel Figure 2-1 The LEDs locate on the front panel. They indicate the device’s working status. For details, please refer to LED Explanation. LED Explanation...

  • Page 11: The Back Panel

    TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide There is no device connected to this LAN port. A wireless device has been successfully added to the network by WPS function. WPS handshaking is in process and will continue for about 2 Flash minutes.

  • Page 12: Installation Environment

    Method one: Plug one end of the twisted-pair ADSL cable into the ADSL port on the rear panel of TD851W, and insert the other end into the wall socket. Method two：You can use a separate splitter. External splitter can divide the data and voice, and then you can access the Internet and make calls at the same time.
  • Page 13 Plug one end of the twisted-pair ADSL cable into the ADSL LINE port on the rear panel of TD851W. Connect the other end to the MODEM port of the external splitter. Step 2: Connect the Ethernet cable. Attach one end of a network cable to your computer’s Ethernet port or a regular hub/switch port, and the other end to the LAN port on the TD851W.

  • Page 14: Chapter 3. Quick Installation Guide

    Chapter 3. Quick Installation Guide 3.1 Configure PC After you directly connect your PC to the TD851W or connect your adapter to a Hub/Switch which has connected to the Router, you need to configure your PC’s IP address. Follow the steps below to configure it.
  • Page 15 TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Figure 3-2 Step 3: Select General tab, highlight Internet Protocol (TCP/IP), and then click the Properties button.
  • Page 16 TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Figure 3-3 Step 4: Configure the IP address as Figure 3-4 shows. After that, click OK. Figure 3-4 Note: You can configure the PC to get an IP address automatically, select “Obtain an IP address automatically”...

  • Page 17: Login

    TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Figure 3-5 If the result displayed is similar to the screen shown below, it means that your PC has not connected to the Router. Figure 3-6 You can check it follow the steps below:...
  • Page 18 TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Figure 3-7 Step 1: Select the Wizard tab and you will see the next screen. Figure 3-8...
  • Page 19 TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Step 2: Configure the Router with the information provided by your ISP, including VPI/VCI, Connection Mode and the following parameters. Take PPPoE for example, you need to enter Username, Password and DNS parameters. All these information are provided by your ISP.
  • Page 20 TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Figure 3-10 Step 4: Click the Apply Changes button to finish the wizard. Figure 3-11...

  • Page 21: Chapter 4. Software Configuration

    TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Chapter 4. Software Configuration This User Guide recommends using the “Quick Installation Guide” for first-time installation. For advanced users, if you want to know more about this device and make use of its functions adequately, maybe you will get help from this chapter to configure the advanced settings through the Web-based Utility.
  • Page 22 TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Figure 4-1 Click the Refresh button to refresh immediately. 4.1.1.2 ADSL Choose “Status→Device Info→ADSL” menu, and you will be able to view the ADSL configuration.

  • Page 23: Statistics

    TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Figure 4-2 Click the Retrain button to retrain the information again. Click the Refresh button to refresh immediately. 4.1.2 Statistics Choose “Status→Statistics” menu, and you will be able to view the network traffic.

  • Page 24: Wizard

    TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Figure 4-3 Click the Refresh button to refresh immediately. 4.1.3 Wizard Please refer to " 3.2: Login". 4.2 Setup Choose “Setup”, you can see the next submenus: WAN, LAN and WLAN.
  • Page 25 TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Choose “Setup→WAN→WAN” menu, you can configure the parameters for WAN in the next screen (shown in Figure 4-4). Figure 4-4 Current ATM VC Table: ATM settings are used to connect to your ISP. Your ISP provides VPI (Virtual Path Identifier), VCI (Virtual Channel Identifier) settings to you.
  • Page 26 TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide • VPI: Identifies the virtual path between endpoints in an ATM network. The valid range is from 0 to 255. Please input the value provided by your ISP. • VCI: Identifies the virtual channel endpoints in an ATM network. The valid range is from 32 to 65535 (1 to 31 is reserved for well-known protocols).
  • Page 27 TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Add: Click this button to add a VC. First fill the parameters above and then click this button, thus your new VC will be added to the Current ATM VC Table.
  • Page 28 TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide QoS: Select the Quality of Service types for the Virtual Circuit, including UBR (Unspecified Bit Rate), CBR (Constant Bit Rate), and nrt-VBR (Variable Bit Rate) and rt-VBR. Please note that the selection of QoS type will lead to the availability of the following parameters, including PCR (Peak Cell Rate), CDVT (Cell Delay Variation Tolerance), SCR (Sustained Cell Rate) and MBS (Maximum Burst Size).

  • Page 29: Lan

    TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide 4.2.2 LAN 4.2.2.1 LAN Choose “Setup→LAN→LAN” menu, and you will see the LAN Interface Setup screen (shown in Figure 4-7). Here you can change IP address, subnet mask and other parameters for LAN interface.
  • Page 30 TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide MAC Address Control: The router supports the MAC address control on Ethernet port. Select the LAN interface on which you want to run MAC Address Control. Click the Apply Changes button to make the configuration take effect. For example, if you enable the MAC address control on “LAN1”, then the traffic from interface “LAN1”...
  • Page 31 TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Figure 4-8 LAN IP Address: Displays the LAN IP address of the Modem Router Subnet Mask: Displays the subnet mask of the Modem Router. DHCP Mode: Options available are None, DHCP Relay and DHCP Server.
  • Page 32 TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide DHCP relay. In this mode, the DHCP requests from local PCs will be forwarded to the DHCP server running on WAN side. Figure 4-10 • Relay Server: Enter the IP Address of the DHCP server running on WAN side.
  • Page 33 TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide • Max Lease Time: The time that the DHCP client is allowed to maintain the assigned dynamic IP. After the dynamic IP address has expired, the user will be automatically assigned a new one. The default is 1440 minutes.

  • Page 34: Wlan

    TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Note: After configuration, you need to click the Save button appeared on the left panel so that your configuration can still take effect after the Router reboots. 4.2.2.3 DHCP Static Choose “Setup→LAN→DHCP Static” menu, you can view and add a static address for client via the next screen (shown in Figure 4-13).
  • Page 35 TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide 4.2.3.1 Basic Choose “Setup→WLAN→Basic” menu, and you will see the Wireless Basic Settings screen (shown in Figure 4-14). Please configure the parameters for wireless according to the descriptions below. Figure 4-14 Disable Wireless LAN Interface: Choose to disable the Wireless function of the ADSL Router.
  • Page 36 TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Radio Power (Percent): Here you can specify the Radio Power of Router. You can select High, Middle or Low which you would like. High is the default setting and is recommended.
  • Page 37 TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Step 1. Select “WEP” from the Encryption drop-down list. The following available options will change to offer the appropriate settings. Figure 4-16 Step 2. Click Set WEP Key button to enter the Wireless WEP Key Setup screen as shown in Figure 4-17.
  • Page 38 TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Step 3. Fill in the above parameters according to the guides below. • Key Length: Select the desired length. Options available are 64-bit and 128-bit. • Key Format: Select the desired format. Options available are ASCII (5 characters) and Hex (10 characters).
  • Page 39 TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Figure 4-18 Step 2. Select the desired WPA Authentication Mode, Enterprise (RADIUS) or Personal (Pre-Shared key). After the selection, the following available options will change to offer the appropriate configuration. •...
  • Page 40 TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Figure 4-19 Wireless Access Control Mode: Options are “Disable”, “Allow Listed” and “Deny Listed”. If the mode is “Disable”, it means the wireless access control function is closed; if the mode is “Allow Listed”, only the client on the list will be able to connect to you access point;...
  • Page 41 TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Figure 4-20 Fragment Threshold: This value specifies the maximum size for a packet before data is fragmented into multiple packets. If you experience a high packet error rate, you may slightly increase the Fragmentation Threshold.
  • Page 42 TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Broadcast SSID: When wireless clients survey the local area for wireless networks to associate with, they will detect the SSID broadcast by the Router. To broadcast the Router’s SSID, select “Enable”. If you don’t want to broadcast the Router’s SSID, select “Disable”.
  • Page 43 TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Push Button Configuration: Click Start PBC button when using PBC method for WPS configuration. If the wireless adapter supports WPS and the Push Button Configuration (PBC) method, you can add it to the network by PBC with the following two methods.
  • Page 44 TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide The WPS Configuration Screen of Wireless Adapter Method Two: Step 1: Press the WPS button on the front panel of the Router or click Start PBC button in Figure 4-21. Step 2: For the configuration of the wireless adapter, please choose “Push the button on my...
  • Page 45 TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide The WPS Configuration Screen of Wireless Adapter Step 3: Wait for a while until the next screen appears. Click Finish to complete the WPS configuration. The WPS Configuration Screen of Wireless Adapter...
  • Page 46 TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Method One: Enter the PIN into my Router Step 1: For the configuration of the wireless adapter, please choose “Enter a PIN into my access point or a registrar” in the configuration utility of the WPS, and get the PIN code on the screen as below, then click Next.
  • Page 47 TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Method Two: Enter the PIN from my Router Step 1: Get the Current PIN code of the Router from Self-PIN Number in Figure 4-22 (each Router has its unique PIN code. Here takes the PIN code 12345670 of this Router for example).

  • Page 48: Advanced

    TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Note: If you want to enable the WDS, please go to the page WLAN->Basic, and select the "Mode" to be AP+WDS. Figure 4-23 Enable WDS: Select to enable WDS. Add WDS AP: To add MAC addresses of other Access Point, follow the steps below.

  • Page 49: Route

    TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide 4.3.1 Route 4.3.1.1 Static Route Choose “Advanced→Route→Static Route” menu, you can configure the routing information in the next screen (shown in Figure 4-24). Here you can add or delete IP routes.

  • Page 50: Nat

    TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Figure 4-25 RIP: Select to enable the RIP function or not. Click the Apply button to save your configuration. Interface: Select the interface on which you want to enable RIP. Recv Version: Indicate the RIP version in which information must be passed to the device. It can be accepted into its routing table.
  • Page 51 TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Figure 4-26 Enable DMZ: Check the box to enable DMZ function. DMZ Host IP Address: Enter the specified IP Address for DMZ host on the LAN side. Click Apply Changes to save your configuration.
  • Page 52 TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Figure 4-27 Usual Service Name: The Router provides some common services. Select the one you need. User-defined Service Name: If the service can not be found in the Usual Service Name drop-down list, just enter the name manually in this field instead.
  • Page 53 TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Note: After configuration, you need to click the Save button appeared on the left panel so that your configuration can still take effect after the Router reboots. For example: If you want to setup a FTP Server on LAN host 192.168.1.33, you can configure a virtual server rule as follows: Step 1: Select “FTP”...
  • Page 54 TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide 4.3.2.4 Port Trigger Choose “Advanced→NAT→Port Trigger”, and then you can configure the port trigger rules in the screen as shown in Figure 4-29. Port trigger is used to restrict certain types of data packets from your local network to Internet.
  • Page 55 TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Trigger Protocol: The protocol to trigger the rule, it can be TCP, UDP or TCP/UDP. Start Relate Port / End Relate Port: The start and end related port. Open Protocol: It can be TCP, UDP or TCP/UDP.

  • Page 56: Qos

    TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide global IP. Many-to-Many: The IP between “Local Start IP” and “Local End IP” will be mapped to the IP between “Global Start IP” and “Global End IP”. One-to-Many: One local IP will be mapped to any of the IP between “Global Start IP” and “Global End IP”.
  • Page 57 TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Figure 4-31 IP QoS: Choose “enable”, and then you will see the following parameters. QoS Policy: Policy of QoS. The traffic will be classified on the base of this policy. It can be based on stream, 802.1p or DSCP.
  • Page 58 TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Figure 4-32 Src IP: The source IP address of the rule. Src Mask: The source mask of the rule. Dest IP: The destination IP address of the rule. Dest Mask: The destination mask of the rule.
  • Page 59 TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Phy port: The incoming port of the rule. It indicates the physical port of the traffic is incoming. Set Priority: The priority of the rule. It can be p0(highest), p1, p2, p3(lowest). The traffic matches the rule will be assigned the priority you have configured.
  • Page 60 TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Figure 4-33 802.1p rule list: Shows the current rules on the device. 802.1p tag: The number of 802.1p tag. Send priority: The priority to transmit. The traffic matches the 802.1p filed will be assigned this priority.

  • Page 61: Cwmp

    TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Figure 4-34 DSCP tag: The value of the DSCP filed. Transmit prior: The priority to transmit. The traffic matches the DSCP filed will be assigned this priority. Dscp rule list: Shows the current rules on the device.
  • Page 62 TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Figure 4-35 ACS parameters Enable: Enable or disable the CWMP. URL: Enter the website of ACS which is provided by your ISP. User Name/Password: Enter the User Name and password the device should use when connecting to the ACS.

  • Page 63: Port Mapping

    TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Reset: Click this button to delete your entering. Note: After configuration, you need to click the Save button appeared on the left panel so that your configuration can still take effect after the Router reboots.
  • Page 64 TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Figure 4-36 You can enable or disable the port mapping function of the device by the select radio button. If “Enable” radio is selected, you can configure the mapping group as follow steps.

  • Page 65: Others

    TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Click the Apply button to finish the configuration. Note: After configuration, you need to click the Save button appeared on the left panel so that your configuration can still take effect after the Router reboots.

  • Page 66: Igmp Proxy

    TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide 4.4.1 IGMP Proxy Choose “Service→IGMP Proxy” menu, you can configure the IGMP proxy in the screen (shown in Figure 4-38). Here you can enable or disable the IGMP proxy function on all WAN interface, and you can also set the parameters of the IGMP function.

  • Page 67: Snmp

    TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Figure 4-39 UPnP: Choose to enable or disable the UPnP function. Only when the function is enabled, can the UPnP take effect. WAN interface: Select to run UPnP function on which interface.

  • Page 68: Dns

    TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Figure 4-40 Enable SNMP: Choose to enable or disable the SNMP support. System Description: System description of the device. System Contact: Contact information of the device. System name: Name of the device.

  • Page 69: Ddns

    TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Note: After configuration, you need to click the Save button appeared on the left panel so that your configuration can still take effect after the Router reboots. 4.4.5 DDNS Choose “Service→DDNS”, you can configure the DDNS function in the screen (shown in Figure 4-42).

  • Page 70: Firewall

    TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Username: Username assigned by the DDNS provider. Password: Password assigned by the DDNS provider TZO Settings: Email: Email address assigned by DDNS provider. Key: Key assigned by DDNS provider. Dynamic DDNS Table: Display the DDNS entry of this device.
  • Page 71 TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Figure 4-43 Outgoing/Incoming Default Policy: The default action of outgoing/incoming connection. It can be “Deny” or “Allow”. If the connection doesn’t match any MAC filtering rules, the router will handle the connection with the default action you have set.

  • Page 72: Ip/Port Filter

    TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Note: After configuration, you need to click the Save button appeared on the left panel so that your configuration can still take effect after the Router reboots. 4.5.2 IP/Port Filter Choose “Firewall→IP/Port Filter” menu, and you will see the next screen (shown in Figure 4-44).

  • Page 73: Url Filter

    TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide SPort: Tf the protocol is “TCP” or “UDP”, you should set the source port of the entry. It can be a single port or a port range. Dport: TI the protocol is “TCP” or “UDP”, you should set the destination port of the entry. It can be a single port or a port range.

  • Page 74: Acl

    TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Step 1: Select “Enable” (show in Figure 4-45). Step 2: Enter “yahoo.com” in the Keyword field. Step 3: Finally click the AddKeyword to save the entry. Note: After configuration, you need to click the Save button appeared on the left panel so that your configuration can still take effect after the Router reboots.
  • Page 75 TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Figure 4-47 LAN ACL Switch: You can enable or disable the ACL function on LAN side. If it is disabled, all hosts on LAN side can access the services which your router provides. If it is enabled, only the hosts on the “Current ACL Table”...
  • Page 76 TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Figure 4-48 WAN Setting: The setting of WAN side, it can be “Interface” or “IP Address”. If it is “Interface”, you should specify a WAN interface for this ACL entry. If the WAN setting is “IP Address”, you should specify the IP address of the host on WAN side.

  • Page 77: Maintenance

    TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Current ACL Table: It shows the current ACL setting. 4.6 Maintenance Choose “Maintenance”, you can see the next submenus: Click any of them, and you will be able to configure the corresponding function.
  • Page 78 TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide To upgrade the router's firmware, follow these instructions below: Step 1: Type the exact path of the update file into the “Select File” field. Or click the Browse button to locate the update file.
  • Page 79 TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Figure 4-51 Step 2: Save the file as the appointed file (shown in Figure 4-52). Figure 4-52 To restore the Router’s settings: Step 1: Click the Browse button to locate the file for the device, or enter the exact path in “Load...

  • Page 80: Password

    TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Step 2: Click the Upload button to complete. 4.6.2 Password Choose “Maintenance→Password”, you can configure the user account of the router in the screen (shown in Figure 4-53). Here you can add user account to access the web server, and modify the password of the specified user.

  • Page 81: Time

    TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide 4.6.4 Time Choose “Maintenance→Time”, you can configure the system time in the screen (shown in Figure 4-55). Simple Network Timing Protocol (SNTP) is a protocol used to synchronize the system time to the public SNTP server.

  • Page 82: Log

    TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Figure 4-57 State: Indicate the current state of NTP function. Choose to enable the NTP or not. Server/Server2: Enter the IP address or the host name of the NTP server. Interval: The interval time of NTP function.

  • Page 83: Diagnostic

    TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Figure 4-58 Note: If changes are made, after clicking Apply Changes button, a Save button will appear on the left panel. You need to click the Save button to make your changes take effect.
  • Page 84 TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide 4.6.6.2 Tracert Choose “Maintenance→Diagnostic→Tracert”, you can tracert a host you want (shown in Figure 4-60). The router provides a tracert command to measure the route path and transit times of packets across an Internet Protocol (IP) network.
  • Page 85 TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Figure 4-61 Flow type: The ATM OAM flow type. The selection can be F5 Segment, F5 End-to-End, F4 Segment or F4 End-to-End. VPI: The VPI number you want to do the loopback diagnostics.
  • Page 86 TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Figure 4-62 Click the Start button to start the diagnostic, and then wait several minutes later you will see the test result. 4.6.6.5 Diag-Test Choose “Maintenance→Diagnostic→Diag-Test”, you can select an interface to run diagnostic in Figure 4-63.
  • Page 87 TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Figure 4-63 Click the Run Diagnostic Test button to start the test, and then wait several times later you can see the diagnostic result.

  • Page 88: Appendix A: Specifications

    TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Appendix A: Specifications General ANSI T1.413, ITU G.992.1, ITU G.992.2, ITU G.992.3, ITU G.992.5, Standards and Protocols IEEE 802.11b, IEEE 802.11g, IEEE 802.11n, IEEE 802.3, IEEE 802.3u, TCP/IP, PPPoA, PPPoE, SNTP, HTTP, DHCP, ICMP, NAT Safety &...

  • Page 89: Appendix B: Troubleshooting

    TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Appendix B: Troubleshooting 1. How do I restore my Router’s configuration to its factory default settings? With the Router powered on, press and hold the RESET button on the rear panel for 8 to 10 seconds before releasing it.
  • Page 90 TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Click Network Connections Right-click Local Area Connection Click Properties Double-click Internet Protocol (TCP/IP)
  • Page 91 TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Select Obtain an IP address automatically Select Obtain DNS server address automatically Click OK Click OK...
  • Page 92 TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide For Windows Vista OS Go to Start > Settings >Control Panel, and then you will see the following page. Click View network status and tasks Click View status Click Properties...
  • Page 93 TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Double-click Internet Protocol Version 4 (TCP/IPv4) Select Obtain an IP address automatically Select Obtain DNS server address automatically Click OK...
  • Page 94 TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide For Windows 7 OS Go to Start > Settings > Control Panel, and then you will see the following page. Click View network status and tasks Click Change adapter settings Right-click Local...
  • Page 95 TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Double-click Internet Protocol Version 4 (TCP/IPv4) Select Obtain an IP address automatically Select Obtain DNS server address automatically Click OK...
  • Page 96 TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide 2) Configure your IE browser Open your IE browser, click Tools tab and you will see the following screen. Click Internet Options Select Never dial a connection Click OK 4. What can I do if I cannot access the Internet? 1) Check to see if all the connectors are connected well, including the telephone line, Ethernet cables and power adapter.
  • Page 97 TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide default settings and reconfigure your Router following the instructions of this QIG. Please feel free to contact our Technical Support if the problem persists. Note: For more details about Troubleshooting and Technical Support contact information, please log on...

  • Page 98: Appendix C: Technical Support

    TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Appendix C: Technical Support Technical Support For more troubleshooting help, go to: www.tp-link.com/support/faq.asp To download the latest Firmware, Driver, Utility and User Guide, go to: www.tp-link.com/support/download.asp For all other technical support, please contact us by using the following details: Global Australia &...

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