Generic LT Drivers from Modemsite:

Modemsite.com 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 Drivers also has updated Modem-on-hold applet version 1.76.

Agere's  website offered generic driver version 8.30.

Info on V.92 & LT Win Modem

LT Driver Downloads from Modemsite.com - 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.