The competitive environment in long-distance telecommunications markets changed considerably with the divestiture of AT&T in 1982, A variety of providers appeared, offering myriad services. In this environment, customer selection of preferred long-distance carrier became more complicated and more important. In this paper, we analyze and quantity the determinants of this choice. To our knowledge, this focus is distinct. By contrast, the literature to date has analyzed the behavioral determinants of calling volume (local and long-distance) and the selection of local service options. In our analysis, we allow the alternative carriers to differ in terms of tariffs, reputation, quality, access, and specialized customer services. We quantify the interactive effects of these carrier attributes and customer demographics upon the selection of carrier. Price and income elasticities are estimated. A distinguishing feature of our analysis is that it examines behavioral differences among households in equal-access and unequal-access areas. We find that households assured of the convenience of 1 + dialling for their chosen carrier in equal-access areas display more rational and sophisticated decision making. On the other hand, households in unequal-access areas display greater status quo effects in their decision making.