A network fax service system for Microsoft Windows NT/95networks, designed to support concurrent sending andreceiving of multiple fax documents by multiple users, utilizing one or more fax modems attached to the CTFax server. It supports MS Exchange Server intgration (MAPI). CTFax system was designed and implemented from the ground up to take advantage of the Microsoft Windows NT architecture. It encompasses a robust and flexible fax server, and an intuitive and easy to use fax client. The clients can run on both NT/95 platforms.