Dlink DSL 200 USB Modem installation issues:

There is a useful site for issues with a review of the Dlink 200 usb put 
together from info for a DSL connection to BT Internet in the UK. Note: t
hat the screen shots show the setup for the UK, and you need to subsitute 
correct values for Australia (e.g: VPI=8, VCI=35 etc).

It is available from the following site:

http://www.adslguide.org.uk/hardware/reviews/2001/q4/dlink_dsl200.asp

It includes a section on USB Bus Bandwidth, and screenshots for checking this.

To get to the USB Bus Bandwidth screen, in windows go to:

How to check resources used by USB devices on USB Controller in WinXp
go to Start -> Control Panel
-> System
-> Hardware
-> Device Manager
-> Universal Serial Bus Controllers
should have: Intel (r) 852371AB/EB PCI to USB Universal Host Controller
or VAA Rev 2 USB Controller or something similar
-> double click
-> Advanced

shows bandwidth consuming devices.

The Dlink 200 USB device can take up to approx 80%  available bandwidth through 
a single USB 1.1 compliant controller. (note: according to this site: USB 2.0 
cards are also available - they support 1.x devices and have around 480Mbps 
bandwidth, so this is a possible solution for bandwidth issues).

DLINK spec sheet:
This is useful to check for the technical specs for the DSL200
http://www.dlink.com.au/products/broadband/dsl200/

DLINK also has an FAQ which includes the following item worth noting:

FAQ Link: http://www.dlink.com.au/tech/faq/modems/dsl200.htm

5. Why DSL-200 stops responding after leaving it on for a while?



Check your power saving settings under Power Options or Power Management 
in Control Panel and BIOS (you can access BIOS settings at the moment when 
your PC just boots up). Make sure you have the corresponding power saving 
features disabled (esp. USB power saving) 

Reinstall DSL-200 using driver ver 1.08 or later to see if the same symptom 
persists. You can download the latest driver from Driver Downloads section. 
The installation examples are also available under Tech Resources 
Restarting your PC should recover communication with the modem. 


BIOS/motherboard and XP issues
There is a known issue with Asus motherboards and Windows XP USB drivers. If 
the customer has an Asus motherboard and they are using Windows Xp, get them 
to make sure they install the latest USB drivers that come with the cd for 
their motherboard, rather than the drivers built in with XP.

The customer needs to also use the latest drivers for XP for the DSL 200, 
rather than what's on the CD (which may contain the earlier drivers). 


Here is what a general search on USB and XP turns up on support.microsoft.com

http://search.support.microsoft.com/search/nlsearch.aspx?Catalog=LCID%3d1033%26CDID%3dEN-US-KB%26PRODLISTSRC%3dON&Product=winxp&Query=usb%2520drivers&Queryc=usb+drivers&REF=false&srchstep=0&KeywordType=ALL&Titles=false&numDays=&maxResults=25

Some of these links may have some pointers for customers who are having problems with the DSL 200.
 e.g.: 
Windows XP Does Not Detect Your New USB Device (Q314634)

http://support.microsoft.com/search/preview.aspx?scid=kb;en-us;Q314634

may be useful for customers who can't detect the USB device.

Other issues:

Customers may download the updated drivers, and use the defaults specified -> which may not work.

The following settings have been verified to work with XP customers:
Other Service provider
->WAN driver
->VPI 8 VCI 35

->RFC 2364 PPPoATM NULL Encapsulation

->Modulation: Multimode

(default is gmdt - make sure this is on multimode to be safe)

plug in dsl 200 into usb hub
when prompted:

go through driver install
should come up with
dlink dsl -200  adsl loader
->select:
install software automatically

should come up with:
found new hardware
dlink dsl 200 adsl modem (WAN)
-> select install automatically
lights on mode should come on ok
doesn't prompt to reboot (this is ok)
try connecting straightaway
from Dlink Dial up ppp connection, with:
username@aus-dsl.net

Other issues: 
If the USB device has not correctly installed,
there may be no ADSL link light on the modem. This doesn't necessarily mean there is
no sync on the line, which is nasty. Before reporting a no sync fault, check to 
see if you can verify that the dsl 200 has been correctly installed.
You should be able to see the driver for the DSL 200 listed under the properties for the USB
controller.

If necessary, uninstall the dsl 200 software and try the install again.

____________________________
Polly Morgan