Frequently Asked Questions &
Troubleshooting Guide

Why is Asymmetric Digital Subscriber Line (ADSL) called Asymmetric?

What are the benefits of ADSL over analog modems?

What is USB?

Will my modem constantly connect near the maximum speed?

Can I use my modem during a thunderstorm?

Do I need to install additional telephone lines in order to use ADSL?

Will my old PC be fast enough for ADSL?

I am not able to connect to the Internet (for RFC 2364 and RFC 2516 users only).

How can I send/receive fax as well as surf the Internet at the same time?

Do I need to use a Micro-Filter when using ADSL (For Annex A users)?

How do I know if my modem driver has been installed successfully?

What is the function of the icon ?

How do I add the DSLMON icon to my system tray?

How do I monitor the performance of my modem?

How do I change the default VPI/VCI values as well as the encapsulation mode type?

How do I remove (uninstall) my modem driver?

Why is Asymmetric Digital Subscriber Line (ADSL) called Asymmetric?

It is called asymmetric because more bandwidth is reserved for receiving data than for sending data. This is useful because many users of the Internet receive much more data than they send.

What are the benefits of ADSL over analog modems?

Besides the high-speed advantage, ADSL connection is always on. There is no longer a need to log on and off, no more busy signals and no more waiting for the connection to establish - it is always there. On top of these, you can use the phone even when the data connection is on. You do not need to switch between surfing the Net and talking over the phone.

What is USB?

USB stands for Universal Serial Bus. It is a new peripheral bus standard developed by PC and Telecom leaders. It allows connection for low to medium speed computer peripherals. USB features high throughput I/O transfer rate of 12Mbit/sec and support up to 127 devices.

Will my modem constantly connect near the maximum speed?

At ADSL speeds, the limitations depend on the performance or load of the ADSL Service Provider that you are trying to reach, as well as the line condition specific to your location.

Can I use my modem during a thunderstorm?

ADSL modems can be damaged by thunderstorms. Our product warranty does not apply to damage caused by lightning. If your area frequently experiences thunderstorms, you are advised to use a surge protector. Certain surge protectors have been reported to reduce download speed, so you are advised to test your speed before and after installation to make sure that it adds no problems to your line.

Do I need to install additional telephone lines in order to use ADSL?

No, you do not need to do this. ADSL and standard voice telephones operate at different sets of frequencies. The difference in frequencies allows both IP (Internet) traffic and voice traffic to co-exist on the same physical phone line.

Will my old PC be fast enough for ADSL?

Yes. A limitation comes in only when the ADSL line is used to view video-on-demand or other memory and processor hungry applications. Your old PC may be too slow in such cases.

I am not able to connect to the Internet.

Run the diagnostics that comes with your modem package.

i. Ensure that your modem is powered on.

ii. On your Windows desktop, double-click on the USB DSL Test icon.

iii. Click TEST. Allow some time for the tests to progress.
Upon completion, you should see a green colour box for all the tests. This means that your modem is now functional.

If you see a red colour box for INTERFACE and/or MODEM tests, this means that you have not installed your modem driver properly.
Remove your modem driver (see How do I remove (uninstall) my modem driver?). Disconnect the USB cable from your Modem. Install the modem driver BEFORE setting up your Modem as described in the Installation Guide! Upon completion, run the diagnostics again.

Alternatively, you may click LOG for the possible reason(s) for the failure.

iv. For information on the colour legend, click HELP.
Click EXIT to close the diagnostic tests.

How can I send/receive fax as well as surf the Internet at the same time?

To send/receive fax, you may connect your fax machine to the TEL jack via a Micro-Filter, similar to the Telephone Set connection as illustrated in Step 2 of the Installation Guide.

Do I need to use a Micro-Filter when using ADSL (For Annex A users)?

Micro-Filters are required if you are sharing your ADSL line with your telephone. The Micro-Filter will eliminate noise on the telephone line to ensure the best possible phone performance. If the ADSL uses a different line and not sharing with your Telephone Set, then a Micro-Filter will not be necessary.

For connection to the Micro-Filter, you may refer to Page 4 of the Installation Guide.

How do I know if my modem driver has been installed successfully?

Run the diagnostics USB DSL Test on your Windows desktop to verify. Alternatively, carry out the following steps:

For Windows 98 / 98 SE / Windows Me