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Article ID: 41 Last Updated: November 1, 2025
Operating System(s): ALL

Where's the Windows® 95 INF file for the Infotel 28.8 Internal Voice/Speaker Phone modem?
The INF file is located on both the BBS and the Ftp site. The file can be found on the BBS as INFTLINF.ZIP and on the Ftp site at ftp://ftp.mwmicro.com/pub/bbs/modems/inftlinf.zip. The INF file is not necessary for the modem to work in Windows 95. The INF file tells Windows 95 applications about the modem's features. Any compatible modem can be used. The INF file is only needed if problems exist in a Windows 95 application.

How can I make Windows 95 detect my modem?
Use the "Add New Hardware" icon (which can be found in the Control Panel) for Windows 95 to detect which COM port the modem is using. If Windows 95 does not detect the COM port, the modem may not be properly installed. Check all jumpers on the modem, and make sure it is properly seated in the expansion slot. (Refer to the user's manual for more troubleshooting techniques.) After Windows 95 detects the COM port, run the 'modem wizard' to detect the modem.

Why is Windows 95 detecting my modem as a "Standard modem"?
Windows 95 looks for the hardware ID and speed of the modem, then it looks up that information in its hardware list. If the modem does not match a specific modem in the hardware list, it will be set up as a "Standard modem". The disadvantage of using the "Standard modem" type is that some of the modem's features may not be accessible. Try setting the modem up as a "Hayes Optima" instead of the "Standard modem" to avoid these disadvantages.

What's the best initialization string to use?
The modem's factory default setting (AT&F) is the best choice for the INIT string. Changing any one of the settings incorrectly may cause the modem to operate unreliably. If the factory default setting is not working correct for you, then use the INIT string AT&F&C1&D2 instead.

Some software packages may require you to disable either error correction and/or data compression to operate correctly. Use the INIT string AT&F&C1&D2%C0\N0&Q6 to disable both error correction and data compression. Remote access packages often require this to be done.

NOTE: If the modem returns an ERROR message, the "%C0", "\N0" or the "&Q6" command(s) may be the cause. Some modems do not support these commands. Remove one command at at time from the INIT string to determine which one(s) is/are returning the error. Any command(s) causing the error in the INIT string should be removed since the modem doesn't support it/them.

NOTE: For the best results use the INIT string AT&F&C1&D2&K3%C0\N3S10=90 for all on-line service (such as CompuServe, America On-line and Internet providers use.)

How can the volume be adjusted on the speakers that were included with my Voice/Fax modem?
With the speakers plugged into the modem, the volume cannot be adjusted. However, there is a small jumper cable included with the modem that connects the modem to a sound card. The black mono end of the cable connects to the speaker port on the modem, and the red stereo end connects to the line in port on the sound card. Once the jumper cable is plugged in and speakers are plugged into the sound card, the volume can be controlled now by the sound card.

NOTE: FaxWorks™ software, by default, will mute the sound card's output. Go to the sound card's mixer software and un-mute all of the settings. (In Windows 95, double-clicking the speaker icon on the taskbar will bring up the mixer.) FaxWorks has internal volume controls for listening to incoming messages or the person on the other end of the phone. Set these controls to fine tune the volume even more.

Why is my voice/fax modem only playing sound through one of the speakers?
The voice/fax modem has a mono speaker port; therefore, sound will only come from one speaker when using stereo speakers.

How do I send a fax using FaxWorks, Winfax and other Windows fax programs?
Create a document using either a word processor or a graphics program (the program must be written for Windows). Go to the printer's "Setup" option and choose a fax driver as the active device to print to. Below is a list of the most common fax drivers.

FX-Works - FaxWorks
Microsoft Fax - Windows fax driver
PIC-Printer - SuperFax and SuperVoice
Quick Link II Fax - Quick Link II
WINFAX - Delrina Winfax

(If none of the above drivers are listed, consult the fax software manual for the correct driver name.)

After selecting the fax driver, a dialog box appears prompting for a recipient and phone number to fax the document to. Fill out the appropriate information, and the fax driver will dial the number and send the fax.

My modem won't always connect at its highest speed. Why?
The most common reasons a modem will fail to connect at high speeds are line noise, improper initialization and software configuration problems. The faster the modem is expected to communicate, the better the line quality must be. Modems may not always connect at their maximum speeds due to internal differences between them. As an example, most 28.8 baud modems, on average, will connect between 26.4 and 28.8 Kbps. Consult the software user's manual to correctly set up the modem. See question # 4 for INIT string suggestions.

My modem will connect to local telephone numbers at high speed, but when I dial long distance I get poor connections or even garbled characters on the screen. Why?
Long distance calls increase the possibility of line noise. Receiving garbled characters on the screen generally indicates line noise or an incorrect protocol (8-N-1 or 7-E-1) being used. Check with the system operator of the modem that is being dialed to verify the correct protocols and whether error correction and/or data compression are being used.

How do I contact you?
You can contact our Tech support at (800) 262-6622 or via our World Wide Web page at http://www.mwmicro.com/support/.

What can I do with a fax modem?
You can use your fax modem to communicate with other computers and fax machines throughout the world.

What is Co-Session?
Co-Session is a remote access application software. It allows one computer to access another computer by using modems. Customers can request that a technician access their computer if both Co-Session and a modem are present in the computer. The software is only used on files that need to be heavily modified or on software that is difficult to set up.

What COM port is my modem on?
Generally modems that are pre-installed at the factory, are set up on COM2.

One way to determine what COM port the modem is on, is to compare the jumper settings on the modem with its documentation.

There are also some diagnostic tools that can be used to determine what COM ports are being used without removing the case.

  • If you are running DOS 6.x then use the MSD (Microsoft Diagnostics) program located in the C:\DOS directory. Selecting COM ports in the MSD utility displays information on all of the serial devices that are present in the system. Locate the column that has Data Set Ready (DSR) and Clear To Send (CTS) set to 'YES'. The address at the top of the column indicates which COM port the modem is on.

NOTE: The COM port label at the top of the column may not always be accurate. Refer to the list below for COM port/Address reference.

COM1 = 03F8H
COM2 = 02F8H
COM3 = 03E8H
COM4 = 02E8H

  • In Windows 95 you can determine the COM port by checking the modem profile in the Device Manager.

Most of today's telecommunication programs can automatically detect and report which COM port the modem is set for.

An external serial device needs to use COM2. What COM port should be used in place of COM2?
Set the modem to COM3 and an IRQ such as 5 (Do not use IRQ 3 or 4 since these are already in use by COM1 and COM2). Most modems have IRQs 3, 4, 5 or 7 to choose from. Verify that the IRQ chosen is not in use by other hardware devices such as a sound card. If no free IRQs are available, try moving one of the conflicting devices (possible devices include sound cards, cd-roms, etc.) to another IRQ. This may free up an IRQ for the modem.


File(s) to download:
INFTLINF.ZIP


 

The above information pertains specifically to MidWest Micro products. MidWest Micro will not be held liable for the misuse of the above information.


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