Tekelec engages in the design, development, production, marketing, sale, and support of telecommunications products and services. It operates in three segments: Network Signaling Group, Communications Software Solutions Group, and Switching Solutions Group. The Network Signaling Group offers signaling and session control, transitional and Internet protocol multimedia subsystem architecture, number portability, mobility management, and messaging solutions. Its EAGLE 5 integrated signaling system provides global signaling and real time, transaction-based applications from a single platform. The Communications Software Solutions Group offers performance management solutions, which are used...