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Samples in periodicals archive:
Formerly known as the Exchange Carriers Standards Association, ATIS membership was previously open only to LECs.
He was on the original Board of Directors of the Exchange Carriers Standards Association (ECSA) the predecessor organization of the Alliance for Telecommunications Industry Solutions (ATIS), and was one of the founding fathers, and on the Board of Directors of the Cellular Telecommunication Industry Association (CTIA).
It is part of the SONET (Synchronous Optical Network) standard defined by the Exchange Carriers Standards Association (ECSA) for the American National Standards Institute (ANSI).