Patent ID: 6683890
Filing Date: 2004-01-27
Classification: H04J

Abstract:
A method of improving the processing of pointers in at least one of Synchronous Digital Hierarchy and Synchronous Optical Network transmission frames, comprising the steps of:interpreting said pointers relating to a plurality of Administrative Units of said transmission frames according to one of a Normal State Diagram corresponding to a normal non-concatenation state and a Concatenation State Diagram corresponding to a concatenation state; producing for each of said pointers: i) an alarm indication signal; ii) a loss of pointer signal; iii) a normal state signal; and iv) a concatenation signal to obtain a plurality of interpretation signals; processing the interpretation signals to determine whether an overall state is the normal non-concatenation state or the concatenation state; and automatically switching between said Normal State Diagram and said Concatenation State Diagram, according to said processing of the interpretation signals.