Download Lucent Modems Driver

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A product list of Lucent Technologies Modem for driver update, firmware upgrade and utility download. Download Lucent Win Modem for Windows to modem driver. Download Lucent Win Modem for Windows to modem driver. Join or Sign In. Sign in to add and modify your software.

About the LT33.6k/AT&TTrouble with the LT NT, 2k & LinuxCompaaq & LT
What DriverWhere to find DriverUpgrade ProcedureAT CommandsHandshake/Diags

Where to find the Agere Win Modem Driver (Formerly LT Win Modem Driver or Lucent Win Modem Driver): has 'generic' Agere (Lucent/LT) Win Modem Drivers available for download here (requires Premium Access). The latest generic driver is 8.30 and supports all modems based on the 'LT' chipsets, and all Windows operating systems including Win9x,Me,NT4,2K and XP. This driver supports V.90 and lower protocols with all chipsets; V.92/V.44 is supported only with Mars3.2 chipset. Modemsite's LT Driver Section also has updated Modem-on-hold applet version 1.76. Modemsite maintains 'Readme' files for the various driver releases - the 8.30 readme includes information on notebook install problem/solution.

LSI/Agere's website has generic driver version 8.30.

8.31 driver - may be offered by Microsoft Windows Update or supplied by system manufacturer. The 8.31 driver was a special build for an Agere customer that fixes an obscure problem not likely to be encountered by most users. Because this driver did not undergo the testing normally done with general driver releases, Agere is not making this a general release and it won't appear at Modemsite. So, why is it on Windows Update? [When a driver is submitted to Microsoft's WHQL for testing and driver signature, the submitter indicates whether the driver is to be made available via Windows update.] Should you upgrade to 8.31? [It's safer to stay with 8.30.]

LT Driver Downloads from - including LT Modem-on-Hold 1.76, 1.72, 1.71, 1.70, 1.68 and 1.64 for V.92 modems, as well as old and new generic drivers. Download of these drivers is a premium feature available with your ad-free access code. This download area also has a zipped 6.04 package that will work with Windows Me, 2K and XP.

8.30 8.28 8.24 8.22 8.18 8.17 6.0 5.97 5.92 5.87 5.75 5.70 5.66 5.65 5.54 5.53 5.49 5.44 5.43 5.39 5.32 8.10 8.20* 6.04* 8.02-special for disconnect on call waiting with V.90 modems

* - 8.20 and 6.04 are designed for WinXP and should work in WinXP, 2K, and Me, but not Win9x or NT.

Windows Update - Caution! As of 7-Oct-03, the Microsoft Windows Update site may offer version 8.30. In Mar-03, Microsoft added driver version 8.27 to Windows Update for XP. 8.27 is a special build that disables V.92 and V.44 to prevent a rare compatibility issue that will be addressed in a later release. This isn't a good choice for anyone wanting to use 'the latest and greatest'. XP users may find this driver automatically installed depending upon Windows Update settings! Also see: 22-Mar-03 V.92 News.

The latest version may not work as well as older versions for some people. Use the version that's best for you & archive your current version. If you are getting 28.8k or lower connects with old driver, the new driver might give you a big boost -or- it might cause you to get an even lower connect rate. If you get a lower connect with the latest driver, see Trouble with the LTon this page, the Troubleshooting Page, or revert back to the older driver you were using before the update. The handshake sound has changed with version 5.49.

Note: With driver version 5.44 & higher, the .inf file renames the modem from'LT Win Modem' to 'Lucent Win Modem'. If your modem is renamed, you will need toadjust Dial-Up Networking connections.

* - The 6.04 (and 8.12) generic, as well as some vendor-specific downloads are available from the Windows Update Site for WindowsXP. If you have XP and a Microsoft-recognized LT modem, the Windows Update Site should allow you to download these drivers when you scan for updates. If you are not running XP, it appears to be impossible to get this update from Microsoft - see the 16-Feb-02 Latest Update. (The package is available as a zipped file from's Premium Access Content.) The driver package does not include support for Win9x, or NT. See THIS PAGE for more information.

Download lucent modems driver windows 7

Other sites with LT driver: (Note - many of these sites have files for more than just the LT!) Before applying upgrades, please read (and print out) my upgrade instructions.

Link to Vendor site


AcerExtensa 700 series notebook; old driver (May'99) w/ no version indicated
ACorp IntlA56PML is Lucent model; No version # listed (broken link removed - MIA)
ActiontecFor Computer City/ DT56016;DT56018;IS560LH-- also PCI PM560LH; PCI56019Has driver v 5.92 w/ Windows 2k
Archtek / Smartlink56PCI-L & L2 - no version # listed - old drivers
AskeyV1456VQH-R3 is 5.68 file:; V1456VQH-T1(INT1) is 5.43 file:; V1456VQH-T1 is 5.37 -
ASUSV 5.61A for Win95/98 & NT ASUS M8000 series Notebook computer; Also FTP
AusLinxABC 56k-PCI (:Lucent) - no version listed
AztechNo version #; 'Lucent solution' modems
CompaqSP21461.exe - version 8.22a; SP13722.exe for Presario 5410 - version 5.70; Also SP14702.exe
SP20530SP23586.exe - version 8.22 w/ MoH 1.70
SP23101 SP23103 and SP23104 - version 8.30/MoH1.73 for WinXP/2000 and 98
CNet USANo version # indicated on web page; has non-Lucent files on page as well
CPI International-Out of business- Use Generic Drivers from this site
CTXFTP site - V90 in V90updates; version 5.32; also has [old setup?] files in 56k directory
CybermaxOut of business - use generic drivers. (Thanks to Lars in Sweden for the info.)
DellLT modem for I7000 notebooks; Version 5.34; V.92 Data/Fax/Voice for Agere/Askey WinMe 2k & XP Version 8.09 .
Digitan5.99 driver; separate files for each operating system; 5.99 has a Win2k bug.
Dynamode (Israel)AT&T PCI V1456VHQ-T1 (5.16 for Win95/98; 5.14 for NT & 5.68 for Win2k)
EncoreENF656-PCI-LUAO Version 5.06, 7/4/98 (PCI-LUCY is version 5.10)
FujitsuDoesn't mention LT anywhere, but if you select LifeBook 900 (& other) series & Win95, you'll see a modem V90 upgrade Also: 5.79 for Win2k only.
GatewayNo version # listed (file posted 7/99)
Gateway (Australia)5.34 & 5.37 versions for Australia & NZ; Also has 3Com Winmodem drivers
GenicaMW-50 & 1100-L models; no version # listed
GVC CanadaPut model, or just 56k internal modem category in search form to find files
GVC TaiwanIn 'English' - has version 5.55; includes OEM modems used in some IBM Aptiva systems
Harmony USAVersion 5.43 mdl 18026-1; also has driver for other non-Lucent chipsets
Hawking TechNo version # without download; aslo has PCTel, Rockwell & Motorola driver
Hewlett PackardHP Support site makes it difficult to find drivers....! Looking for good links; HP users can use Agere or Modemsite generic drivers - see top of page.
Hi-ValMDP7800U / H56IP-00 is Lucent; version 5.43; Also has drivers for Rockwell, PCTel, ESS & TI chipset modems
HitachiVision Book 5000 models; no version # on ltmodem.exe
IBMVersion 5.85a ( Also: 5.18, 5.19, 5.28a, 5.37, 5.43, 5.44, 5.48, 5.56, 5.62 ) Australia/Asia: -4.28D, 5.18a Japan: 4.23 Win2k only:5.62, 5.74
JatonWinMod V.90 - version 5.75
IntevaV90 version 5.09
LectronVersion 8.22 (site calls it 8.2.2 - I56LVP-X4)
Lightspeed Tech.SkyMaster PCI; version 5.35
Livingston (FTP)Generic version 5.56 available; Livingston, who makes ISP access equipment was purchased by Lucent in 1998.
Lucent (Agere - now LSI)The Agere site had LT documentation, and driver version 8.30 delivered via e-mail or download
MaxtechXPV56I/L41B is the LT model #; V.90 version 5.04; Maxtech is owned by GVC-Taiwan
Mitsubishi - AustraliaDiamond Voice modem by Actiontec; Version 5.63
MultitechZPW series - bottom of page; version 5.15b
Multiwave InnovationVersion 5.35Also has older versions
NECSearch for Versa/VersaVX yields Askeymodem 5.62 & 5.66
Netcomm (Australia)Latest LT-based modem - IN5699 rev_2 & _3 are V.92 with 1648C chipset; IN5692 PCI Modem; Has versions 5.87; 5.92; 5.9, 6.00 and 8.10 on the site at .
Packard BellVersions 5.29 & 5.30; MDM100A & MDM100G
ParadiseWaveCom 56kPCI - version 5.44
Phoebe MicroNo version #; also has drivers for Rockwell, Cirrus & TI chipset modems
PionexModel MDM-S56/DT,etc - 'Digitan 56k' versions avail: 5.43; 5.35; 5.20; 5.09; 4.28; 4.21; 4.18
QuantexOut of business. Use generic drivers. (Thanks to Lars in Sweden for the info.)
SMART Modular/Apex Data'56k V90 PCI Modem' - version 5.66 only for Win95/98 The file from this site can be used with the .vxd replace method.
SonySep'01- Sony's page for the modem moved or deleted; Use generic drivers (top of page); Very old version 5.15available here. WinXP version 6.0c: see this page.
tekCommDriver for 'tekComm Internal Contollerless Modem' is LT 5.66 for Win95/98/NT/2k
ToshibaYou'll need to filter results to find correct modem drivers.
UnicentNotebook modems w/ Mars (PCI) chipset; Domain is on hold & offline; owned by PC Importers, Aurora, OH
Viking ComponentsViking Modem FM56KICL, RFM56KICLA(ISA - Lucent Chipset) v 5.32 Also see FM56KPCI
WinbookDriver listed by model #; Version 5.57; Note: 5.57 file is twice the size it should be - the archive contains a 2nd zipped copy of the archive (Apollo557.exe) Also has 5.15; 5.22; & 5.49
Wisecom (CIS Industries)No version #; Model WS-5614PVD is Lucent-based; also see this page.
ZoomModel 2925 w/ Lucent chipset - Version 5.75a
Model 3025 V.92 modem - see this page first.
Zoom has released modem-on-hold applet and V.92 update - Version 8.12.
Download Lucent Modems Driver

Download Lucent Modems Drivers

Note about 5.66 & later upgrades!

The 5.66 (and later) has a new installation program that supports Win95/98/NT4 & 2k, and I've received a number of reports (although from a very small minority of LT owners) of problems with the setup. Nearly all users who have reported these problems are (a) able to revert back to an older driver version, and (b) able to upgrade to the new version using my .vxd upgrade/copy method. Improvements have been made in the installation with subsequent updates, however, some users may still experience installation issues using the Lucent setup program. Windows 2000: You may have to update the modem using Win2K device manager - the setup program might not do it.

Note about 5.75 upgrade: There is a problem calling CISCO Mica server modems running (beta) 2.7.1.x firmware. A V.90 connection cannot be negotiated. If your ISP uses this equipment & firmware, you can either force a K56Flex connect ( s38=1-v90=0 ) or go back to 5.70 or earlier. V.90 connections to CISCO Mica 2.6.2.x firmware are not affected. Update 12-Nov-00: Cisco has released Mica code to address 5.75 interoperability. 5.75 should work to Cisco modems updated to

Note about 5.87 upgrade: The driver in Microsoft WDM-compliant for Win98, 2k & Me. There is a problem with some Windows95 machines that attempt installation of the Me WDM driver instead of the 5.87 .vxd. See the 5.87 Readme for further info.

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