A system for implementing time stamp related features in a real time stamp
distribution system is discussed. The distribution system derives a real
time stamp (RTS) at a master timekeeping network element and distributes
the RTS to associated network elements by way of a number of distribution
techniques. Under certain network conditions, the real time stamp may not
reach one or more of the network elements at the valid real time. In the
present system, the network elements are able to derive a local time
based on timing information recorded at the network element. Thus the
system can detect an error in the time stamp delivered to a network
element and can correct the time stamp utilizing a local time stamp
feature.