Gemplus’s Operation Center enables subscriber management services for a total of sixteen wireless carriers Luxembourg, Las Vegas, NEVADA, RCA Annual Convention, March 31, 2005–Gemplus International S.A. (Euronext: LU0121706294–GEM and NASDAQ: GEMP), the world’s leading provider of smart card solutions, today announces that U.S. wireless carriers Plateau Wireless, Douglas Communications, Endless Telecom, Farmers Wireless, Petrocom, LLC,…