Anritsu Corporation

Koichi Kibe

Hajime Imazeki

An overhead data generating unit stores and generates the non-multiframe structured data and the multiframe structured data to be inserted into the overhead portion of an OTU frame. The overhead data generating unit includes a memory which stores the multiframe structured data corresponding to sequence numbers in each multiframe unit of 256 frames (or the number of frames of &#xbd; or &#xbc; thereof) from 0 to 255 which are needed for completing a set of meaningful data for each predetermined data item. An editing unit reads at least the multiframe structured data corresponding to the sequence numbers, and causes to list-display each multiframe in order of the sequence numbers to a display unit, and carries out editing processing in each multiframe unit with respect to the multiframe structured data in accordance with an arbitrary setting by an operating unit.

OTU frame data generating apparatus and method in which multiframe structured data to be inserted into overhead portion can be easily edited

A channel pointer extractor extracts channel pointer value inserted in a SDH signal based on the pointer position information contained in the channel information, each time the channel information is detected by a channel information detector. A reference data readout section readouts the reference data of the channel specified by the channel identification information contained in the channel information from a reference data memory, each time the channel information is detected by the channel information detector. A pointer processing section judges the states of justification and alarm, from the channel pointer value extracted from the channel pointer extractor, and reference data read out by the reference data readout section and generates a new reference data based on the judgment results.

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Atsugi, Japan

Koichi Kibe