Phase adjusting apparatus, phase adjusting method for use therein, and program for phase adjusting method

摘要

An MFI synchronization manager determines the continuity of MFI values to manage the synchronization of the MFI values. A phase adjuster detects a reference VC-3 channel of VC-3 channels which make up a virtual concatenation based on detected MFI values. A write controller writes frame data into a phase adjustment memory based on a write permission signal from the phase adjuster and data valid/invalid information. A write frame manager manages the frame data written in the phase adjustment memory with respect to each of the VC-3 channels and generates a read permission signal for the frame data whose all VC-3 channels of the concatenation have been written. A read controller reads the frame data from phase adjustment memory according to the read permission signal.