General Info

Scientific Telephone Samples (STS) has been one of the leaders in random digit dialing (RDD), listed and business sampling services since 1988. The firm is a provider of quality samples to the marketing research and academic communities. It is also one of the largest sampling suppliers in the United States. Scientific Telephone Samples (STS) offers a range of services, including RDD (random digit dialing) sampling, wireless RDD (random digit dialing) sampling, listed and business sampling, sample productivity enhancement as well as telephone or address append.