Time synchronisation

CCS provider and CCS customer use the date and time for the operation of each service, and they must be able to date the traces and the information passed to the SSI log collector.
NTP is the standard solution to synchronize time accurately. So, CCS Provider and CCS Customer shall use, each of them, at least one NTP server (stratum N), integrated in a NTP network containing a stratum 0 reference time clock. CCS customer may use a CCS provider server as a NTP server, however this usage is restricted to time synchronization test or monitoring purpose.