Viavi Solutions Inc. provides network test, monitoring, and assurance solutions to communications service providers, enterprises, network equipment manufacturers, civil government, military, and avionics customers worldwide. The company operates through three segments: Network Enablement (NE), Service Enablement (SE), and Optical Security and Performance Products (OSP) segments. The NE segment offers testing solutions that access the network to perform build-out and maintenance tasks. This segment provides solutions that include instruments, software, and services to design, build, activate, certify, troubleshoot, and optimize networks; and instrumentation for communication and safety. It also offers support and professional services, such as repair, calibration, software support, and technical assistance for the products; and system integration projects, including project management, installation, and implementation, as well as product and technology training, and consulting services.