Patent ID: 7619978

Claim:
A transmission state indicating method for a predetermined transmission system, by SONET (Synchronous Optical Network)/SDH (Synchronous Digital Hierarchy), in which high capacity data is divided into a plurality of low capacity virtual containers and transmitted via a plurality of channels which configure a communication network by the SONET/SDH based on clocks at the respective channels, the method comprising: assembling a plurality of frames back into a multiplexed frame, wherein the plurality of frames are received in accordance with transmission states at the respective channels, and wherein the assembling is performed based on a reference clock with respect to virtual containers at the respective channels included in the plurality of frames including the plurality of low capacity virtual containers; successively detecting factors at the respective channels which are respectively included in the plurality of frames contained in the multiplexed frame, and which are to be objects for delay absorption processings corresponding to the transmission states at the respective channels, as a plurality of pointer values indicating a variation in phase or transmission delay during transmission at said plurality of channels which configure the communication network by the SONET/SDH; and indicating the plurality of pointer values successively detected, at the same time, corresponding to the plurality of channels by a graphic indication and a table indication, wherein in the graphic indication, a first axis indicates the plurality of channels which configure the communication network and a second axis indicates the pointer values of the plurality of channels contained in the frames, and wherein in the graphic indication and the table indication, when a pointer value of a given channel from the plurality of channels is judged to exceed a predetermined range with respect to a reference value and a LOP (Loss Of Pointer)/AIS (Alarm Indication Signal) has arisen, a pointer value plot range of the given channel indicated in the graphic indication is shaped into a strip and the pointer value of the given channel displayed in the table indication is made identifiable.