Syniverse Holdings, which operates as Syniverse
Technologies, offers business and network engineering
services that manage and interconnect voice and data network
systems. The company, formerly known as TSI
Telecommunication Services, also offers clearing and
settlement services, voice and data roaming facilitation,
fraud management, and other services to mobile operators,
fixed-line carriers, and other telecommunications firms.
Customers have included China Unicom, AT&T Mobility
(formerly Cingular), Sprint Nextel, Verizon Wireless, and
Vodafone Group.