1. How to install the DU-560M modem?
2. How can I check if the modem is installed properly?
3. How do I connect to the Internet?
4. How to make my connection more stable?
5. Why am I not connecting at 56000 bps?
6. How to make the modem to autoanswer?

1. How to install the DU-560M modem?(Back to top)

Here are the installation steps for the modem:

Note: Please uninstall your modem if it was not installed correctly for the first time:
If the modem is already connected to your USB port please go to Start > Settings > Control Panel > Modems > Select the modem and click on Remove.
Please check your Device Manager as well: go to Start > Settings > Control Panel > System > Device Manager > and have a look if there are any Unknown, Unsupported or Other Devices there. Remove them as well as devices with yellow exclamation marks or question marks.
Look for "Communication Device" or "Modem Enumerator" or any suspecious devices under Universal Serial Bus Controller category. Remove these devices too. Then please do the following:

• Unplug the modem from the USB port of your computer (if it is connected).
• Restart your computer.
• After booting up please connect the modem to USB port.
• Windows will detect the modem automatically and will give you a message saying "New Hardware Found".
• Windows will ask you for drivers - please select "Search for the best Driver" and then tick on "Specify the location" and specify the path to the files as "D:\USB_MODEM\AUSTRALIA\WIN98" providing your CD-ROM drive letter is "D" (there are different versions of the driver disk so please check the correct path by clicking on Browse) or enter the path to the files you have downloaded from the Internet.
• Windows may ask you for Windows installation disks - please insert Windows setup CD-ROM if required and specify the path as D:\WIN95 (or D:\WIN98).
• Finish.

At some stage Windows will detect another New Hardware - Wave Device for the modem. Please specify the path to the drivers again: D:\USB_MODEM\AUSTRALIA\WIN98.

The modem should be seen in Device Manager without any exclamation marks or question marks as Conexant HCF V90 Data Fax Voice USB Modem.


Please double-click on the modem in Device Manager and check Country Select tab. Make sure you have got correct country selected there.
If you do not have Australia in the list please click on Driver > Update Driver and install the driver from D:\USB_MODEM\AUSTRALIA\WIN98 or D:\USB_MODEM\TAIWAN\WIN98 (providing "D" is your CD-ROM drive letter). Please note that you have to tick "Install one of the other drivers" option when updating the driver.
After updating the driver please select Australia under Country Select.

Please keep in mind that the drivers for your modem are under D:\USB_MODEM\AUSTRALIA\WIN98 folder on the CD (you may have a different version of CD so the path may be a bit different). Or if you do not have the SuperVoice CD you can download the drivers from our WEB site: http://www.dlink.com.au/tech/drivers/files/modems/du560.htm. You will need to UNZIP the the files first using WINZIP.


If you are having troubles installing the modem in Windows 2000 please download the Installation Guide here: http://www.dlink.com.au/tech/resources/files/modems/du560m.htm

2. How can I check if the modem is installed properly?(Back to top)

Please go to Start > Settings > Control Panel > Modems > Diagnostics tab
You should see a new modem installed on one of the COM ports (eg. COM3 Conexant HCF V90 Data Fax Voice USB Modem). It could be COM3 or COM4 depending on your computer. Please note that internal modems can only be installed on virtual COM ports, not on COM1 or COM2 which are separate devices on your motherboard. If you do not have COM2 (or it is disabled in BIOS) then the modem can be installed in COM2.
Select the COM port with your modem, Click on "More Info..." button.
After a while, you will see a window with the results codes - the response from the modem.
If there are no Error messages there, then the modem is installed correctly in your system.

2. How do I connect to the Internet?(Back to top)

After you have installed your modem successfully you can configure your Internet connection. Double-click on My Computer and open Dial-Up Networking. You will see "Make New Connection" icon - double-click on it and follow the prompts. You might need some assistance from your ISP (Internet Service Provider).

If you had another modem installed before, you need to reconfigure your Dial-Up connection to use the new modem. To do that please go to My Computer > Dial Up Networking > right-click on your ISP connection icon and select Properties. Under Connect Using... menu select "Conexant HCF V90 Data Fax Voice USB Modem". Then click on OK.

3. How to make my connection more stable?(Back to top)

Please make sure that you have got CALL WAITING disabled on your telephone line. If someone calls you while you are connected to the Internet - you will get disonnected eventually. Please contact your telephone company on how to temporarily disable Call Waiting.

Please make sure that you have your modem connected directly to the first telephone socket in your unit/house and there are no other devices (telephone, fax, answering machine) connected to the line before your modem socket. All these devices can be connected to the line which goes out of the TELEPHONE jack of the modem.

Dropouts are usually related to poor line quality. It may happen that the dropouts you are experiencing are related to the fact that the modems are negotiating high data transfer speeds and can not handle this speed later on causing disconnections. You can fix this problem by forcing the modem to connect at a bit lower speeds.
To do that please go to Start > Settings > Control Panel > Modems > select your modem > Properties > Connection > Advanced > Extra Settings...

In the Extra Settings field please type the following:

AT+MS=v90,1,300,33600,300,38000

If you will find the connection stable try to increase the speed - change the last number (38000) in the string to 42000. Try it for a couple of days and if the connections will be stable with this string, try 46000 or 48000.

We would not recommend to increase the speed higher than 48000 bps - it is the average speed of 56K modems. With speeds higher than this you may experience frequent disconnections from ISP.

4. Why am I not connecting at 56000 pbs?(Back to top)

It is almost impossible to achieve FULL 56k (it is only a theoretical value). Surveys done in USA indicate that the typical speed of 56K modems is 44k to 50k. Moreover according to FCC, due to electrical power constraints , legally, the max. speed would only be 53kbps (more power is required on the line to achieve 56k, which the FCC forbids).

The actual speed depends on the line quality/condition.
Please note that 56K technology is only 56K download speed. Upload speed is still only 33.6K. This is the limitation of the technology itself. So if you are connecting to another modem (not to your ISP you can only get 33.6K maximum).

When system reports about the speeds like 56000 or 115200 - it is actually the port speed (DTE) not the line speed (DCE). Port speed can be set in Control Panel > Modems > Properties > Maximum speed.
To make Windows to report line speed instead of port speed use ATW2 (or ATW1) command under Start > Settings > Control Panel > Modems > select your modem > Properties > Connection > Advanced > Extra Settings...

In some cases using lower speeds gives better results. Please try this string under Extra Settings:

AT+MS=v90,1,300,33600,300,48000

5. How to make the modem to autoanswer?(Back to top)

If the software that you are using with the modem does not have the ability to set the modem to autoanswer you will need to configure the modem yourself. You will have to use Hyperterminal to enter the command into modem's memory.
(if you do not have Hyperterminal installed please add it by going to Control Panel > Add/Remove Programs > Windows Setup > Communications > Details...)
Please have the modem connected to your computer and ensure that it is working fine. Please go to:
Start > Programs > Accessories > (Communication >) Hyperterminal .... Hyperterm.exe > name the connection "modem" > Connect Using... Select COM3 or COM4 (on which port the modem was assigned) > Bits per second 9600 > OK.
After that try typing ATZ command and press ENTER (you may not see what you are typing). The response from the modem should be OK.
Please type in the following command:

ATSO=3

Now can write the all the settings you have made into modem's memory by typing the following AT command and pressing Enter:

AT&W

The response should be "OK"
The modem will now be set to auto-answer after 3 rings.

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