The Lucent WDM Modem Enumerator is a Windows driver related to modems that use Lucent Technologies' hardware (which is now part of Agere Systems). WDM stands for Windows Driver Model, a framework used by Windows operating systems to manage hardware drivers for various devices. In this case, the Lucent WDM Modem Enumerator driver is used to facilitate communication between your computer and a Lucent-based modem, enabling your system to properly detect and interact with the modem hardware.

This driver is often used for dial-up modems (though less common today) or certain integrated modems on older PCs.