In computer and telecommunications networks, time and frequency synchronisation is crucial. It is imperative that switches, routers, bridges and clients operate synchronously to guarantee the quality of the services on the network. CN Rood is a full-service supplier for network timing projects in areas such as telecom, the financial and transport sectors, and uses PTP, NTP, IEEE 1588 and IRIG protocols. We use systems based on GPS/GLONASS, Galileo and DCF77. We also supply testing systems for measuring the quality of the timing network. Besides Jitter and Wander, these are used to measure PDV, FPP, TE and MTIE/TDEV.