Sierra Modems AT&T Comsphere 3800 Series Driver Download

Download the latest version of the AT&T Comsphere 3800 Series driver for your computer's operating system. Visitors have downloaded this file "Unimodem.exe" 51 times with an aggregate rating of 4 out of 5 stars based on 7 reviews. It is compatible with PCs running Windows Vista and Windows XP, among other operating systems. The total disk space used for this update is 407.7 KB.

7 Ratings
51 Downloads

Supported Models

AT&T Comsphere 3825 Plus

14,400 bps Data-Fax PCMCIA Modem

14.4 Data Fax Modem

14.4 Data Fax PCMCIA Modem

14.4 PCMCIA Modem

AT&T Comsphere 3800 Series

AT&T Comsphere 3810 Plus

Manufacturers

Supported Operating Systems

Windows Vista, Windows 2003, Windows 2003 (64 bit), Windows XP, Windows XP (64 bit), Windows 2000, Windows NT4, Windows NT3.51, Windows ME, Windows 98SE, Windows 98, Windows 95, Windows 3.1

File Name

Uploaded By

DriverGuide (DG Staff Member) on 13-Mar-2006

Driver Contents File List

The following files are found inside the driver download file.

Name Size Date
BT848.DRV 72.2 KB 11 Aug 1997
BT848.INF 4.0 KB 11 Nov 1997
BT848.VXD 87.0 KB 11 Aug 1997
BT848DDI.DLL 38.9 KB 11 Aug 1997
BT848DLG.DLL 79.6 KB 13 Oct 1997
BT848_16.DLL 11.8 KB 11 Aug 1997
BT848_32.DLL 45.6 KB 11 Aug 1997
BTMDM.INF 31.5 KB 11 Nov 1997
BTMODEM.VXD 24.2 KB 30 Nov 1997
BTMWAVE.INF 1.4 KB 11 Nov 1997
BTPNP.VXD 7.8 KB 30 Nov 1997
BTSCP.INF 2.0 KB 13 Nov 1997
BTSCP.VXD 22.6 KB 30 Nov 1997
Unimodem/AWFXEX32.EXE 77.3 KB 19 Dec 1996
Unimodem/MDMATT.INF 31.3 KB 19 Dec 1996
Unimodem/MDMDSI.INF 42.1 KB 19 Dec 1996
Unimodem/MDMGVC.INF 56.7 KB 19 Dec 1996
Unimodem/MDMHAY2.INF 35.1 KB 19 Dec 1996
Unimodem/MDMINFOT.INF 31.5 KB 19 Dec 1996
Unimodem/MDMMOTO.INF 48.2 KB 19 Dec 1996
Unimodem/MDMROCK.INF 62.7 KB 19 Dec 1996
Unimodem/MDMROCK2.INF 54.1 KB 19 Dec 1996
Unimodem/MDMROCK3.INF 51.6 KB 19 Dec 1996
Unimodem/MDMROCK4.INF 27.9 KB 19 Dec 1996
Unimodem/MDMSIER.INF 19.3 KB 19 Dec 1996
Unimodem/MDMSUPRV.INF 23.1 KB 19 Dec 1996
Unimodem/MDMVV.INF 26.2 KB 19 Dec 1996
Unimodem/MODEMUI.DLL 37.8 KB 19 Dec 1996
Unimodem/MSHDC.INF 15.2 KB 19 Dec 1996
Unimodem/NODRIVER.INF 4.8 KB 19 Dec 1996
Unimodem/SERWAVE.INF 6.4 KB 19 Dec 1996
Unimodem/SERWAVE.VXD 14.2 KB 19 Dec 1996
Unimodem/SERWVDRV.DRV 12.1 KB 19 Dec 1996
Unimodem/SPKTRN16.DLL 1.5 KB 19 Dec 1996
Unimodem/SPKTRN32.DLL 9.2 KB 19 Dec 1996
Unimodem/UMDM16.DLL 2.1 KB 19 Dec 1996
Unimodem/UMDM32.DLL 6.1 KB 19 Dec 1996
Unimodem/UMDMXFRM.DLL 14.8 KB 19 Dec 1996
Unimodem/UNIMDM.TSP 43.5 KB 19 Dec 1996
Unimodem/UNIMODEM.VXD 59.5 KB 19 Dec 1996
Unimodem/UNIMODV.INF 1.3 KB 19 Dec 1996

How to Update AT&T Comsphere 3800 Series Device Drivers Quickly & Easily

Step 1 - Download Your Driver

To get the AT&T Comsphere 3800 Series 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 Sierra Modems AT&T Comsphere 3800 Series 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 Sierra Modems AT&T Comsphere 3800 Series. 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 Sierra Modems. All company names/logos are properties of their owners.
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