Apparatuses, methods, and systems directed to estimating response time and other performance metrics in network communications. According to the method, the proportion of time which the disc drive is reading data from the disc during a unit time T is calculated. A first utterance may include a plurality of words, including an identifier of one of the plurality of participants and at least one additional word, may be received. The TRNC transmits a relocation request acknowledgment to the CN to confirm or reject the relocation. The angle calculator preferably includes a curve fitter and an error analyzer.