Factual Background

The parties do not dispute the relevant facts. Pacific's special access tariff contains two rates for DS-1 circuit channel terminations, depending on the point of termination. One rate, $165.94, applies to circuits terminating at an end-user location (TMECS rate); and the other, $71.12, applies to circuits terminating at an IC (interexchange carrier) POT (point of termination) location (TMEPS rate). Pac-West purchased DS-1 circuits at the lower TMEPS rate for more than six years. Pacific no longer sells these circuits to Pac-West at that rate, which led to this complaint.