Appendix A: FAQ

TD-8840

ADSL2+ Modem Router User Guide

Appendix A: FAQ

1.What related parameters are required to acquire ISP when you want to access the Internet by ADSL2+ Modem Router?

1)Dial user: Connection protocol, User name, Password, Value of VPI/VCI, Encapsulation mode of AAL5 and so on.

2)Static IP user: Connection protocol, WAN IP Address, Subnet Mask, Gateway, DNS, Value of VPI/VCI, Encapsulation mode of AAL5 and so on.

2.About Connection protocol, VCI/VPI, Encapsulation mode of AAL5

1)This product supports the PPP protocol over ATM (PPPoA)、 PPP over Ethernet (PPPoE)、MAC Encapsulation Routing (MER)、IP over ATM (IPoA) and Bridging. You may use any one of the five protocols above. Because the ISP in different areas supports different protocol, you must choose the protocol supported by your ISP.

2)The VPI is the English abbreviation of the Virtual Path Identifier, the VCI is the English abbreviation of the Virtual Channel Identifier, and the value of VCI/VPI must be compatible with that provided by ISP.

3)Encapsulation mode of AAL5 include: LLC/SNAP and VC_MAX (often using LLC/SNAP).

3.Why the LAN’s and the NIC’s LEDs are both bright, but the configuration interface is inaccessible?

1)Use the order of ping 192.168.1.1 to check the Accuracy of connection.

2)Check the Accuracy of working NIC.

3)Check the setup of the IP address on your computer. If you disabled the DHCP function, the IP address can’t be obtained automatically, so you have to specify the IP address for your computer manually.

4)Run the ipconfig command in the windows 2000 to check whether the IP address, subnet mask, and default gateway have been assigned by DHCP..

5)Reboot the ADSL Modem default configuration if necessary.

4.Have completed all configurations, but can’t dial through computer

1)Check the indicator of ADSL. It should be working normally.

2)Check the value of VPI/VCI, Encapsulation mode of AAL5 and so on, and whether you

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TP-Link TD-8840 manual Appendix A FAQ, ADSL2+ Modem Router User Guide
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TD-8840 specifications

The TP-Link TD-8840 is a versatile ADSL modem/router that has been designed for home and small office use. Known for its robust performance and ease of use, this device combines the functionality of a modem and a router, offering users a cost-effective solution for high-speed internet access.

One of the main features of the TD-8840 is its ADSL2+ support, which enables internet speeds of up to 24 Mbps downstream and 1 Mbps upstream. This capability allows users to enjoy seamless browsing, streaming, and online gaming experiences. The modem is compatible with various ADSL standards, making it a flexible choice for different ISP offerings.

In terms of connectivity, the TD-8840 comes equipped with four Ethernet ports, allowing users to connect multiple devices directly through wired connections. This is particularly beneficial for businesses or households with several computers and devices, ensuring stable and high-speed internet access for all. Additionally, it offers a USB port for connecting to storage devices, facilitating easy file sharing and access across the network.

Security is another paramount feature of the TD-8840. The device supports various encryption protocols, including WPA and WPA2, providing a secure wireless environment for users. Moreover, it includes a built-in firewall that protects the network from external threats, ensuring that users can browse the internet safely.

Setting up the TP-Link TD-8840 is straightforward, thanks to the intuitive web UI. The installation process is guided, allowing users to get online quickly without needing extensive technical knowledge. The modem also offers features such as DHCP server, NAT, and IP QoS, further enhancing its functionality.

Compatibility is another strength of the TD-8840, as it works with a wide range of ISPs, making it a popular choice for many users. The device's compact design and robust build quality ensure durability, making it a reliable investment for long-term use.

In conclusion, the TP-Link TD-8840 is an excellent modem/router choice for those seeking a reliable, high-speed internet connection. With its ADSL2+ support, multiple Ethernet ports, and strong security features, it meets the demands of modern households and small businesses. Its ease of setup and wide compatibility with ISPs further enhance its appeal, making it a noteworthy option in the crowded networking market.
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