In the 1990s, the Facility and Equipment Planning System (FEPS) and Planning Workstation System (PWS) products were incorporated into the Telcordia TIRKS CE System. TIRKS is still in use at AT&T, Verizon, CenturyLink/Lumen Technologies, and altafiber.
In the 1990s, the Telcordia TIRKS CE System merged the Facility and Equipment Planning System (FEPS) and Planning Workstation System (PWS). This integration has enabled major carriers such as AT&T, Verizon, CenturyLink/Lumen Technologies, and altafiber to continue utilizing these systems.