Time synchronization is often underestimated as a core network service. Nevertheless it is essential for computer networks nowadays as every aspect of managing, securing, planning, and debugging a network involves pinpointing when events occur. Time provides the only frame of reference between all the devices on the network. In order to accurately correlate log files between them, synchronized time is mandatory.
Within the time-setting software using a Network Time Protocol (NTP or SNTP), stratum levels define the distance from the reference clock. The original atomic clocks are Stratum 0. Each device that synchronizes directly from an atomic clock is a stratum 1 device. All devices synching from a stratum 1 device are stratum 2 devices and so on. The higher the stratum number, the lower the accuracy. All devices should at least point towards the same time reference, preferably a stratum 1 device.
TrueGEN advises you to add a clock receiver picking up its signal from an atomic clock to your network. Apart from providing a stratum 1 reference signal, the receiver has a built-in precision oscillator clock, ensuring a minimum of deviation during absence of the atomic clock signal.