TAMPA, Florida, United States—China Unicom signed a contract with Telecommunication Services Incorporated (TSI) to provide international CDMA roaming services, allowing China Unicom customers to roam on a number of CDMA networks across the Asia Pacific region, North America and Latin America.
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TSI said it will provide clearinghouse services for roaming revenue settlement and exchange, ANSI-41 signaling interoperability, online customer management applications used to track and troubleshoot roamers, and short messaging service (SMS) routing.
