Windows 95 Modem Driver Installation Instructions (Hardware modems)

95 Modem Driver Installation Instructions

Table of Contents

General Windows 95 Information

Windows 95 Driver Installation

Customizing your modem driver settings

Zoltrix Modems supported by Windows 95

There are drivers built into Windows 95 for "Rockwell chipset based" Zoltrix modems.

Following is the list of Modems supported by Windows 95:

WINDOWS 95 DISPLAY	ZOLTRIX MODEL #	DESCRIPTION
Zoltrix 14.4 Data Fax Modem	FM144i	Int. HW MNP/V.42
Zoltrix 14.4,144 ATI	FM144ATi	Int. RPI MNP/V.42
Zoltrix 14.4,ZX144 ATI	FM144ATe	Ext. RPI MNP/V.42
Zoltrix 28.8,288 SI	FM288Si & FM288i	Int. V.FC/V.34 HW MNP/V.42
Zoltrix 28.8,ZX288 ACI	FM288Se & FM288e	Ext. V.FC/V.34 HW MNP/V.42

Windows 95 driver for Rockwell chipsets

Rockwell also has a custom Windows 95 driver, (i.e. MODEM.INF file), located on the web at the following address: http://www.zoltrix-int.com/public/modem/win95/rock_15.inf

Of special interest, the Rockwell drivers have a UNIMODEM V driver for the 28.8 V.34 Voice Fax Modem. This is the same chipset used by Zoltrix for our 28.8 V.34 Voice Fax Modem (Models: FMVOC288i & FMVOC288e).

Using the Windows 95 Standard Modem drivers

There are also drivers built into Windows 95 for Standard modems. The "Standard Modem Types" are the first on the Windows 95 list of Modem Manufactures. You may also select one of these drivers, by selecting the correct speed, in place of the Zoltrix driver. All Rockwell based Zoltrix modems should operate using the Standard Modem driver except the 33,600 bps modem. The 33,600 bps modem will also function correctly if a connection over 28,800 is not achieved (i.e. You don't connect at 31,200 or 33,600bps). The STANDARD MODEM DRIVER does not support 33,600 bps modems, and Windows 95 will basically say "HUH", when the modem responds with either:

CONNECT 33600 or CONNECT 31200

If you have an older Zoltrix 2400bps modem, you can use the standard 2,400 bps modem driver. You do not need a special driver for models that do not support error-correction and data compression.

Advantages of using the Zoltrix Driver compared to the Windows 95 Standard Modem Drivers

The main advantage to using the ZOLTRIX driver is that you will be able to control the modem using the Win95 "Advanced Connection Settings" screen to control the following:

1. Error Correction (On/Off)
2. Data Compression (On/Off)
3. Require Error Correction for Connect (On/Off)
4. Use Flow Control (On/Off)
5. Select hardware (RTS/CTS) or software (Xon/Xoff) flow control
6. Select Standard Modulation or Bell (i.e. Bell is used by many older 300 & 1200 bps modems.)
7. Have the modem disconnect the call if the modem is idle for a user specified time period

If you knew your modems AT command set, you could INITialize the modem properly to enable or disable all the above features by adding the INITialization string in the "Extra Settings" field on the "Advanced Connection Settings" screen. But clicking on a box on the "Advanced Connection Settings" screen is much easier.

How to install the Zoltrix Windows 95 Modem driver

If you have a software modem like the FMHSP336i all these instructions do not apply. You MUST use the Com Port and modem driver made for the modem. Your modem also can not be autodetected because it is a software modem not a hardware modem.

If you already have your Zoltrix modem installed using one of Windows 95's Standard Modem Driver's, or one of the Zoltrix Drivers built into windows 95, and you know what Port the modem is set to, you should use the Manual method to install the custom driver for your model.

If you just installed the modem and you you have not installed any Windows 95 modem drivers, you may want to first use the Auto-detection method to allow Windows 95 to automatically detect, add and select the correct port the modem is using. But, if you want your modem to be auto-detected after installing the Win95 driver you must use the Manual method to install the modem driver.

Note: If installing an Internal Modem, you must first ensure that a Port has been added to Win95 that matches the settings of the modem. You may want to use the auto-detection feature to allow Windows 95 to add the correct Port to your system before adding the modem driver. Of course you must first ensure that the Port and IRQ that you set the modem to is not being used by another device in the system. For more information on determining what Ports/IRQ's are being used by your system refer to the following:

DOS based method
Windows 95 based Method

Driver Installation (Manual Method)

Double-click on Modems in the Control Panel
Click on the Add Button

This will bring up the following screen:

Click on the box located next to the Don't detect my modem; I will select it from a list (as indicated in the above picture)
Click on the Next Button

This will bring up the following screen:

Click on the Have Disk Button

This will bring up the following screen:

Insert the diskette containing the Windows 95 Driver (i.e. INF file) into Drive A

Search for the drive and directory where the file is located, by clicking on Browse
Click on the OK button

This will bring up a screen similar to the following: (The models shown will depend upon which driver you are installing)

Highlight your model by clicking on it.
Click on the Next button.

This will bring up a screen similar to the following: (The ports shown will depend upon the configuration of your computer)

Highlight the correct port by clicking on it.
Click on the Next button.

If all goes well you will see the following screen:

Click on the Finish button
Click on the Close button

How to verify that you have installed the correct driver for your model

Remove the driver that you just installed.
Use Windows 95's auto-detection feature.

If your model was one of supported modems in the driver file you used, the Zoltrix model will now be auto-detected by Window 95. If you selected the incorrect model when installing the driver, the auto-detection will now detect and select the correct driver for your model.

Note: If you have a software modem like the FMHSP336i your modem can not be autodetected.

What to do if your model is not auto-detected as a Zoltrix modem

If your model is auto-detected as a Standard modem and not a Zoltrix modem at this point, you should verify the following:

That you used the correct Zoltrix Win95 driver (i.e. 33,600 /28,800/UMC 14,400/Rockwell 14,400 etc...)
That you used the Manual method to install the modem driver.
That you do not have a software modem.

Note: You MUST use Manual method to install the modem driver.

Creating a driver for a model not supported

If you followed the above procedure and your modem is still not auto-detected, you may provide Zoltrix with the file created by Windows 95 when you auto-detect your modem. The file created by Windows 95 when auto-detecting modems is named Modemdet.txt, (located in the WINDOWS directory). This file contains information that will allow us to update our driver file with the correct UNIMODEM ID for your model. With the supplied information, we can include your model into the Driver file.

Please e-mail the contents of the Modemdet.txt file to support@zoltrix.com

Then wait for a driver that supports and auto-detects your modem to be released.

How to remove older beta drivers from the Windows 95 detection

When installing a new modem driver in Windows 95. The INF driver file is copied to the Windows/Inf directory with a naming convention of (OEM0.INF, OEM1,...OEM99.INF)

To remove an older driver file, you must delete the correct OEM.INF file. To do this you should open the OEM.INF files one by one to check if it is a modem driver file written by Zoltrix. This will be indicated in one of the first few lines of the file.

Delete all older Zoltrix OEM??.INF files that you may have installed.
Restart Windows 95 and then install the new driver.

Driver Installation (Auto-Detection Method)

Double click on Modems in the Control Panel
Click on the Add Button

This will bring up the following screen:

Do not Click on the box located next to the Don't detect my modem; I will select it from a list (as indicated in the above picture)
Click on the Next Button

This will start the auto-detection procedure. As soon as the modem is detected click on the Change button to install the Zoltrix driver.

Note: You MUST use Manual method to install the modem driver if you want it to be auto-detected.

This will bring up the following screen:

Click on the Have Disk Button

This will bring up the following screen:

Insert the diskette containing the Windows 95 Driver (i.e. INF file) into Drive A

Select the drive and directory where the file is located, by clicking on Browse
Click on the OK button

This will bring up a screen similar to the following: (The models shown will depend upon which driver you are installing)

Highlight your model by clicking on it.
Click on the OK button.

This will bring up a screen similar to the following: (The port shown will depend upon the configuration of your modem & computer)

Click on the Next button.

If all goes well you will see the following screen:

Click on the Finish button
Click on the Close button

Customizing your modem driver settings

How to add AT commands to the INITialization string to customize your setup

You can add additional comands other than are used by the windows 95 modem driver using the following method:

Double click on Modems in the Control Panel
Click on the modem driver that you want to customize
Click on the Properties button
Click on the Connection tab
Click on the Advanced button

This will bring up a screen similar to the following:

Add your additional command(s) in the Extra settings box (As indicated below)

Common modifications you may want to make

There could be a number of modifications you may want to make.Following are a few examples:

Speeding up tone dialing

The command in the Extra settings field ATS11=55, (in the above picture), will speed up tone dialing to 55 ms, the default on most modems is 95 ms.

Forcing a connect rate

If you want to force the Rockwell based 33,600 bps modem to connect from 28,800 to 33,600bps, you would add the AT+MS=11,1,28800,33600 command to the Extra settings field.

Limiting the modem top speed

If you want to limit the modems top speed to 2400bps with Rockwell based modems, you would add the ATN0S37=9 or ATF5 command to the Extra settings field. If you want to limit the modems top speed to 2400bps with UMC based modems, you would add the AT*N1 command to the Extra settings field.


Last updated on November 19, 1997.