Solved

Install USRobotics External Sportster Faxmodem on NT 4

Posted on 2000-04-20
15
241 Views
Last Modified: 2013-12-27
Basics:
PC running Windows NT 4.0 Service pack 5
Intel 333Mhz Celeron processor
256 Megs of Memory

2 com ports:
com2 has a mouse on it
com1 is where I'm attempting to install the modem

USRobotics 56k Sportster Faxmodem with x2 External

What I've tried so far to get the os and modem working together:

1. Install in a normal manner (control panel, modems, general tab, add, and go through the wizard) NT could not detect my modem so I installed it by selecting from the list and installing the driver that is shipped with Windows NT 4 (3Com Corp. U.S. Robotics 56K FAX EXT).  I also tried a driver downloaded from 3Com's web site but it was no better.  Rebooted.

2. Went to control panel, ports, and removed all ports.  Rebooted.  Com1 was added back (I did not expect com2, where the mouse is located, to appear.)  NT would not detect the modem and would not dial out when the modem was manually setup.

3. Changed the port settings to 3f8 base i/o and irq 4. Rebooted. NT still would not detect the modem and would not dial out when the modem was manually setup.

4. Went to control panel, Devices. Scrolled down to Serial, clicked Startup and changed it from Automatic to System. Rebooted. NT would not detect the modem and would not dial out when the modem was manually setup.

5. Replaced the data cable to the modem with one that I'm sure works.  NT would not detect the modem and would not dial out when the modem was manually setup.  Info: A phone is hooked up to the phone jack on the modem and I get a dial tone (on the phone).

6. Went into system BIOS setup.  Changed IRQ 4 used by ISA to yes (was No/ICU).  Still no luck detecting or dialing.

7. Used Internet Explorer's - Tools, Internet Options, Connections tab, Setup wizard.  No better luck.

Finally some more info -

The modem was working on a Linux machine before I got it so I'm sure the modem itself works.

Yes, I am logged in as Administrator.

Thank you for any help you can provide.

rjacobsn
0
Comment
Question by:rjacobsn
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 4
  • 4
  • 3
  • +2
15 Comments
 
LVL 17

Expert Comment

by:rayt333
ID: 2736617
Check the dip switches and see which are down, should be 3,5,&8 down
0
 
LVL 17

Expert Comment

by:rayt333
ID: 2736622
Also you may want to check in the CMOS setup to make sure the serial port itself is not disabled
0
 

Author Comment

by:rjacobsn
ID: 2736806
Thanks rayt333.

I checked the dip switches and they are as you said... 3,5&8 are down the rest are up.

I checked the CMOS for the serial port being disabled... it isn't.  Com1 is set to 3f8 irq 4.

I had another thought, I'll try swapping the mouse and modem on the serial ports next (so mouse is on Com1 and modem is on Com2).  We'll see if it's the com port or some other problem.

rjacobsn

0
VIDEO: THE CONCERTO CLOUD FOR HEALTHCARE

Modern healthcare requires a modern cloud. View this brief video to understand how the Concerto Cloud for Healthcare can help your organization.

 

Author Comment

by:rjacobsn
ID: 2736850
Adjusted points from 150 to 200
0
 

Author Comment

by:rjacobsn
ID: 2736851
I tried swapping the modem and the mouse.  The mouse continued to work fine, the modem was still undetected.  So now I'm trying to install the modem on Com2.

I made all the same checks on Com2, that is, in CMOS it is enabled and set to 2f8 irq3. The port in Control panel is set to the same.

Any other suggestions?

rjacobsn
0
 
LVL 12

Accepted Solution

by:
Otta earned 200 total points
ID: 2737988
> I tried swapping the modem and the mouse.

The fact that the mouse continues to work shows that both the COM1 and COM2 ports on the motherboard are working correctly, and that both ribbon-cables from the motherboard-ports to the back-plane connectors work correctly.

> 5. Replaced the data cable to the modem with one that I'm sure works.

So, if the hardware "inside" the computer is not the problem, and the data-cable(s) are not the problem, then what's left -- only the modem itself.

Retry the modem on the Linux system.
Just try 'ECHO ATDT111111111 > com2',
and listen/watch the modem, to see if it goes "off-hook" and if you can hear it dial '11111111111'.
0
 
LVL 3

Expert Comment

by:vikiing
ID: 2762107
If BIOS allow both COM1 AND COM2 ports, you must disable one of them in order to allow an external modem in one of them.

Example: if you want to connect modem as a COM2 device, you must disable on-board COM2, so motherboard recognizes the modem at that address and shows no conflict with that.
0
 
LVL 2

Expert Comment

by:PCGuru
ID: 2762434
Tend to agree with otta, the only other thing to suggest is to re-verify that the modem is actually working correctly. Go to another PC, preferrably with a known working modem and try yours, NT vs Linux is not an issue, you can even try it on a win9x PC. I have a feeling that you will find "lights on but no body home" with this modem. Everything you have said so far points to it being faulty.

Cheers,
Guru

>>vikiing>> Sorry man, that only applies to internal modems.
0
 
LVL 3

Expert Comment

by:vikiing
ID: 2762641
>>vikiing>> Sorry man, that only applies to internal modems.

No, dear boy; if you have any serial device (be an internal, or external, or whatever you connect to a COM port), and it's configurable via jumpers, you must disable the port (in BIOS settings) you want to use in order to not generate a conflict.
0
 
LVL 2

Expert Comment

by:PCGuru
ID: 2763052
>>viking>> A device "other than" a modem I will accept, if it occupies or requires its own IRQ, but DEFINATELY NOT qand externanl modem. Regardless of the fact that I have done several defence related training courses on COMMS DATA and RELEVANT DEVICES, I have been using modems with PC's since the late '80s and I have NEVER heard someone say THAT before!!!
0
 
LVL 3

Expert Comment

by:vikiing
ID: 2763968
>>I have been using modems with PC's since the late '80s

Hehehe... I've started to deal with modems in 1974... :) :)


>>I have NEVER heard someone say THAT before!!!

Well; there's always a first time.
0
 
LVL 12

Expert Comment

by:Otta
ID: 2765234
> COM1 AND COM2 ports, you must disable one of them in order to allow an external modem in one of them.

Change "external" to "internal", and only then will this statement become correct.
0
 
LVL 2

Expert Comment

by:PCGuru
ID: 2765273
>>>Otta, thanks man, at least someone knows the difference ;-)

Guru
0
 
LVL 3

Expert Comment

by:vikiing
ID: 2765622
Opps !! now I see; sorry if I wasn't clear enough.

0
 

Author Comment

by:rjacobsn
ID: 2786553
Hi again.  Sorry I had to take a break there.  Sick child at home.

I tried the modem on another computer and sure enough it wasn't working.  Since I was still suspicious of the cable I decided to give that one last try.  So I put the modem back on the linux box with a string of weird cables <a 25 pin male on both ends, followed by a 25 to 9 pin converter, followed by a 9 pin female on both ends, bunch of cables out of a box of cables,  in my experience these things rarely work but it was a last ditch effort.>  And, surprise, it worked.  It was the cable!

So back to the NT box and everything went very smoothly.

Thanks to everyone for thier help.

rjacobsn
0

Featured Post

Learn how to optimize MySQL for your business need

With the increasing importance of apps & networks in both business & personal interconnections, perfor. has become one of the key metrics of successful communication. This ebook is a hands-on business-case-driven guide to understanding MySQL query parameter tuning & database perf

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This article is a how to to configure a UCS Ethernet-uplink portchannel via the console. It is easy to do and can be done quite quickly. In certain versions of the UCS manager the portchannel has issues coming up and this is a workaround. I am…
Before I go to far, let's explain HA (High Availability) and why you should consider it.  High availability is the mechanism used to provide redundancy to any service at the same site and appears as a single service to the users of that service.  As…
In this video, viewers are given an introduction to using the Windows 10 Snipping Tool, how to quickly locate it when it's needed and also how make it always available with a single click of a mouse button, by pinning it to the Desktop Task Bar. Int…
If you’ve ever visited a web page and noticed a cool font that you really liked the look of, but couldn’t figure out which font it was so that you could use it for your own work, then this video is for you! In this Micro Tutorial, you'll learn yo…
Suggested Courses

626 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