Spirent Communications plc operates as a communications test and measurement company in the Americas, Europe, the Middle East, Africa, and the Asia Pacific. The company operates in two segments, Performance Analysis and Service Assurance. The Performance Analysis segment offers solutions for functional, conformance, and performance testing of current and next-generation communications technologies under actual or simulated real-world conditions before a commercial launch. This segment focuses primarily on Ethernet, data center, cloud computing, virtualization, applications and security, test optimization, wireless devices and network infrastructure, satellite navigation, and positioning technologies. The Service Assurance segment provides network monitoring and field test solutions that allow service providers to diagnose, troubleshoot, and determine how to resolve issues with networks and systems within the live network, as well as to monitor live network performance. This segment focuses primarily on ethernet business services, wireless backhaul, and field test solutions. The companys test solutions allow engineers in the communications industry to evaluate the performance of the technologies, infrastructure, and applications to be deployed; and tools facilitate service technicians and field test engineers in the enhancement of network quality and troubleshooting of live networks. It serves network equipment and mobile device manufacturers, service providers, enterprises, and government entities.