an apparatus and method that uses a computer interposed between the telephony endpoint and the telecommunication system controlling that telephony end point. Further activities may include computing maximal source sub-queries associated with the compact query plan, and computing semi-join reductions of the maximal source sub-queries to provide an executable derivative query plan, which may also be stored on a machine readable device. A first pull down transistor driven by the bit line complement is coupled to the first pass gate transistor, and a second pull down transistor driven by the bit line true is coupled to the second pass gate transistor.