Atech LT Win Modem Driver Download

Download the latest version of the LT Win Modem driver for your computer's operating system. This version of "" is rated (5 out of 5 stars) based on 2,529 downloads and 18 reviews. It has been installed successfully by our users on PCs running Windows XP. The total disk space used for this update is 1.3 MB.

18 Ratings (see all reviews)

Supported Models

Voice Modem Serial Wave Device

Controllerless Modem Port

LT Win Modem

Lucent Win Modem




Cypress Semiconductor

Supported Operating Systems

Windows 2003, Windows XP, Windows 2000, Windows NT4, Windows ME, Windows 98SE, Windows 98, Windows 95

File Name

Additional Notes

Driver for all Lucent Chipsets Modem


F-1156IV/A2A(US) DF1156IV+/A2(EU)

DF-1156IV/A2(US) F-1156HV+/A5(EU)

F-1156HV/A5(US) DF-1133HV+/A2


Support All LT Modem (ISA Card)

For Win-NT,Win-95/98. This came from the driver download site of GVC

this site has many other drivers for various modems.

Uploaded By

Kevin (DG Member) on 28-Dec-1999

Ratings & Reviews

See all Atech LT Win Modem ratings and reviews

Driver Contents File List

The following files are found inside the driver download file.

Name Size Date
setup.ini 2.8 KB 7 May 1999
layout.bin 334 bytes 7 May 1999
ltfdsp.exe 36.4 KB 6 Aug 1999
data.tag 149 bytes 7 May 1999
LTDF.INF 46.7 KB 1 Sep 1999 203.9 KB 7 May 1999
ltremove.exe 46.1 KB 6 May 1999
LTDFT.INF 50.3 KB 1 Sep 1999
LTADFT.INF 49.5 KB 1 Jun 1998
LTMODEM.INF 50.8 KB 1 Sep 1999
setup.lid 49 bytes 7 May 1999
LT1644.INF 49.5 KB 7 Oct 1998
LTWAVE.INF 1.6 KB 18 Dec 1997
ltmodem.vxd 866.5 KB 16 Aug 1999
ltmsg.exe 104.4 KB 11 Aug 1999
delmodem.exe 7.1 KB 5 Feb 1999
Ltdsvd.dll 3.6 KB 6 Sep 1999
ltmodem.sys 586.6 KB 16 Aug 1999
LTAMODEM.INF 49.5 KB 7 Oct 1998
ltcom.vxd 4.8 KB 16 Aug 1999
os.dat 417 bytes 6 May 1997
setup.ins 111.1 KB 6 May 1999
lthomol.ini 754 bytes 8 Jan 1999 2.8 KB 7 May 1999
ltinstal.dll 29.7 KB 6 May 1999
lthomol.exe 44.5 KB 4 Aug 1999
LTPORTS.INF 643 bytes 4 Dec 1998
_inst32i.ex_ 290.7 KB 22 Jan 1998
LTDFI.INF 46.4 KB 1 Sep 1999
_setup.dll 11.3 KB 23 Jan 1998
setup.exe 60.4 KB 22 Jan 1998
LTHBSP.INF 50.1 KB 25 Aug 1999 47.2 KB 7 May 1999
lang.dat 4.5 KB 20 Oct 1997
instmdm.dll 30.2 KB 15 Jul 1998
_isdel.exe 8.7 KB 27 Jan 1998
ltvcd.vxd 11.9 KB 16 Aug 1999
LTADF.INF 45.7 KB 1 Jun 1998

How to Update LT Win Modem Device Drivers Quickly & Easily

Step 1 - Download Your Driver

To get the LT Win Modem driver, click the green download button above. After you complete your download, move on to Step 2.

If the driver listed is not the right version or operating system, search our driver archive for the correct version. Enter Atech LT Win Modem into the search box above and then submit. In the results, choose the best match for your PC and operating system.

Tech Tip: If you are having trouble deciding which is the right driver, try the Driver Update Utility for Atech LT Win Modem. It is a software utility which automatically finds and downloads the right driver.

Step 2 - Install Your Driver

Once you have downloaded your new driver, you'll need to install it. In Windows, use a built-in utility called Device Manager, which allows you to see all of the devices recognized by your system, and the drivers associated with them.

How to Open Device Manager

  • In Windows 11, Windows 10 & Windows 8.1, right-click the Start menu and select Device Manager

  • In Windows 8, swipe up from the bottom, or right-click anywhere on the desktop and choose "All Apps" -> swipe or scroll right and choose "Control Panel" (under Windows System section) -> Hardware and Sound -> Device Manager

  • In Windows 7, click Start -> Control Panel -> Hardware and Sound -> Device Manager

  • In Windows Vista, click Start -> Control Panel -> System and Maintenance -> Device Manager

  • In Windows XP, click Start -> Control Panel -> Performance and Maintenance -> System -> Hardware tab -> Device Manager button

How to Install a driver from Device Manager

  1. Locate the device and model that is having the issue and double-click on it to open the Properties dialog box.

  2. Select the Driver tab.

  3. Click the Update Driver button and follow the instructions.

In most cases, you will need to reboot your computer in order for the driver update to take effect.

Tech Tip: Driver downloads and updates come in a variety of file formats with different file extensions. For example, you may have downloaded an EXE, INF, ZIP, or SYS file. Each file type has a slighty different installation procedure to follow.

For more help, visit our Driver Support Page for step-by-step videos on how to install drivers for every file type.

This website is not affiliated with Atech. All company names/logos are properties of their owners.
server: ftp, load: 1.50