Does FreeBSD support software modems, such as Winmodems?

FreeBSD supports many software modems via add-on software. The comms/ltmdm port adds support for modems based on the very popular Lucent LT chipset. The comms/mwavem port supports the modem in IBM Thinkpad 600 and 700 laptops.

You cannot install FreeBSD via a software modem; this software must be installed after the OS is installed.