Patent ID: 7957731

Claim:
A method of determining the quality of communications provided by a plurality of mobile telephones that are tested over at least some different time periods, comprising: receiving one or more telephone voice signals from each mobile telephone over a time period; concurrently with said receiving telephone voice signals from each mobile telephone, receiving one or more reference device voice signals from a reference device substantially co-located with the mobile telephone; determining a voice quality of the telephone voice signals; determining a voice quality of the reference device voice signals concurrently received with the telephone voice signals; determining one or more telephone statistical parameters based on the voice quality of the telephone voice signals; determining one or more reference device statistical parameters based on the voice quality of the reference device voice signals concurrently received with the telephone voice signals; and normalizing the one or more telephone statistical parameters of the telephone voice signals from each mobile telephone based on the one or more reference device statistical parameters of the reference device voice signals concurrently received with the telephone voice signals.