Calnex Solutions plc designs, produces, and markets test instrumentation and solutions for network synchronization, and network emulation for telecoms networks, enterprise networks, and data centers worldwide. The company offers Paragon-neo, a platform that provides PTP and SyncE testing to 400GbE and sub-nanosecond accuracy for 5G networks; NE-ONE, a performance test application for realistic networks, including LAN, WAN, Internet, Cloud, Wi-Fi, (A)DSL, mobile, and satellite to verify application performance; Calnex SNE, a solution for network emulation and simulation, which enables users to build their network; Sentinel, a field solution for 3G/4G/5G mobile backhaul, E911/critical infrastructure, financial networks, and power comms; Paragon-ONE, a feature that bundles delivering test solutions for PTP to profiles, such as IEEE 802.1AS/AS-REV, SMPTE 2059-2, and ITU-T G.8275.1.; and Paragon-X, a solution to test SyncE, PTP, and NTP mechanisms, as well as E1/T1 sync interfaces and ethernet OAM. It also provides Attero-100G for 100/40/25GbE device performance testing; Attero-X, a network emulation test solution; Attero-V, a virtual impairments tool that extends and complements the capabilities of the Spirent range of virtualization products and solutions; and Tempo for canned tests for embedded GPS/GLONASS/BEDOU receiver and optional mini rubidium. In addition, the company offers Rb/GPS, a frequency reference, which provides a stable 10MHz and a 1pps measurement reference for Sync testers; 1pps/ToD/Frequency Converter that enables the users to convert essential signals required in modern network devices; and Calnex Analysis Tool, a network and device analysis software. It offers its products through a network of regional resellers and distributors. The company was incorporated in 2006 and is headquartered in Linlithgow, the United Kingdom.