Solved

WinXP with USB Modem Connection Problem

Posted on 2002-05-08
7
218 Views
Last Modified: 2013-12-27
I am having trouble dialing in to the research centre where I work with my new D Link External USB modem. I am using Windows XP Professional and I've configured the connection the same way as I did when connecting using Windows 98. I don't believe the problem is related to the D Link hardware because I am able to dial in to other sites with no problems.

When I dial in to the modem I receive the following error message:

Opening port...
Error 678: The remote computer did not respond. For further assistance ...

The D Link Modem has the following description in the General tab of the connection properties:
Modem - Conexant HCF V90 Data Fax Voice USB Modem

The modem I am trying to connect to is a:
Banksia iNTRA8 ISA Card 336 - BC5052C

TIA
0
Comment
Question by:davidrahal
7 Comments
 
LVL 3

Accepted Solution

by:
Snazzy_Graphics earned 100 total points
Comment Utility
Hi. I'm a graphics guy with similar problems.

Got quite an education about this last couple of days.

Try setting up a log file for your modem in the control panel. Then look at the bottom of that and you'll see how the two modems tried to negotiate.

Although 678 says the remote machine is not answering, that may not be the whole story.

I was able to improve my connection by changing some settings using hyperterminal.

Specifically for me: AT&Nxx and AT&Uxx seem to help by changing what frequency of carrier I send; where the values xx are a table of speeds (may be different for your modem or your circumstances). I then write that (AT&W) and use an init string which employs it (AT&F).

However, what I'm talking about may be overkill for you. Before going there, make sure the other modem is answering (turn volume on and/or look at that file). Make sure cancel if not connected is checked and set a timeout of 60 seconds. In Conection > call prefs.

These HCF USB modems are apparently a bear in XP.
0
 
LVL 3

Expert Comment

by:Snazzy_Graphics
Comment Utility
Some corrections and added info:

I've been messing around some more in Hyoerterm.

Confirmed that you can get a 678 by having &U set too high. &U is the lowest speed you are willing to connect at. Although other requirements may prevent the connection too.

To fix you can do AT&U0&N0 (<--those are zeros). That just means best speed. Then you would AT&W to write that to modem. And use ATZ1 to activate that (not F like I had earlier).

But that may well be how you are set up in the first place.

I suppose the place to start messing about is the modem advanced config tab, init string. Try it with:

First try: ATZ
2nd: AT&F
3rd: AT&F1

Those should send you through factory setting possibilities, skipping whatever XP has decided you want.
0
 
LVL 6

Expert Comment

by:st_steve
Comment Utility
listening and learning...
0
Free Trending Threat Insights Every Day

Enhance your security with threat intelligence from the web. Get trending threat insights on hackers, exploits, and suspicious IP addresses delivered to your inbox with our free Cyber Daily.

 

Author Comment

by:davidrahal
Comment Utility
Sorry I've taken so long to reply. I've been overseas.

I managed to get a hyperterminal talking to my modem yesterday. I didn't have any luck with my first attempts at using the AT commands. Maybe I'm not using them properly.

Should I continue asking question in the comment section of ee or do I need to contact Snazzy_Graphics directly?

TIA
0
 
LVL 3

Expert Comment

by:Snazzy_Graphics
Comment Utility
ask away.

--Snazzy
0
 

Author Comment

by:davidrahal
Comment Utility
I wasn't able to use the <AT&Nxx> and <AT&Uxx> commands you suggested to control the carrier speed of my modem. Instead I tried a connection using the modem modulation command which has the following syntax:

AT+MS=<carrier>,<automode>,<min_tx_rate>,<max_tx_rate>,
<min_rx_rate>,<max_rx_rate> where <carrier> is the Carrier code for modulation type (V34 = V.34, V90 = V.90, and K56 = K56): <automode> 0 = Automode Disabled, 1 = Automode Enabled: <min_tx_rate><min_rx_rate><max_tx_rate><max_rx_rate>      are the Minimum And Maximum Data Rate for Transfer and Recieve Respectively

I had a look at the Banksia Modem Manual (receiving modem)and it only supports V34 carrier. I was able to connect using:

AT+MS=V34,1,75,28800,75,336000

I'm not entirely happy with crippling the modem to access this modem because I also connect to other ISPs. My understanding is that the modem tries to connect with the fastest modulation first then tries other modulations until it finds one that works. Maybe I need to change a parameter to allow the USB modem more time to connect to the Banksia modem at different modulations.

I'll post more information if I find an additional parameter I can change.

Thanks for you help on this. I was floundering until you pointed me in the right direction.

0
 

Expert Comment

by:TheBadMan
Comment Utility
A trick I used with Win 98 (don't know if it will work with XP) to get 2 PC's connected modem-modem, was to append three comma's  after the phone number in the dial-up adapter eg. "xxxx,,," This forced the modems to wait a little before connecting, at least that is my understanding.
0

Featured Post

What Should I Do With This Threat Intelligence?

Are you wondering if you actually need threat intelligence? The answer is yes. We explain the basics for creating useful threat intelligence.

Join & Write a Comment

The following recovery method will work on All Cisco Switchs that run ISO software. You will need a good copy of the IOS version you want you use saved on your PC and a Com's Cable. The software for these switches comes as a .tar file. Tar is …
Hello All, I have been training on Multicast for a while now and whenever I start the topic , I find out that my friends /  Colleagues mention that they do not know how to test Multicast Joins. As most of the multicast would be video traffic and …
It is a freely distributed piece of software for such tasks as photo retouching, image composition and image authoring. It works on many operating systems, in many languages.
Access reports are powerful and flexible. Learn how to create a query and then a grouped report using the wizard. Modify the report design after the wizard is done to make it look better. There will be another video to explain how to put the final p…

728 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

11 Experts available now in Live!

Get 1:1 Help Now