Patent ID: 7440765

Claim:
A method of generating a clock of an apparatus in a telecommunications network synchronized with time reference signals derived from input signals received from the telecommunications network, the apparatus comprising an input part for receiving the input signals, and a treatment part for treating the input signals, the input and treatment parts being interconnected by lines for transporting the input signals, the input signals having internal frame structures, the method comprising the steps of: a) in the input part of the apparatus: i) deriving the time reference signals from the input signals; ii) reading an edge of the time reference signals; iii) creating an internal frame structure, and synchronizing the internal frame structure to a selected clock for transport of the input signals; iv) establishing a position of the edge relative to the internal frame structure; v) inserting in the internal frame structure a pointer representing the position of the edge relative to the internal frame structure; and vi) sending the internal frame structure to the treatment part; and b) in the treatment part of the apparatus: i) receiving the internal frame structure; ii) extracting the pointer; and iii) generating the clock synchronized with the position in the internal frame structure indicated by the pointer.