公开(公告)号：JPH11252126A

公开(公告)日：1999-09-17

申请号：JP35659798

申请日：1998-12-15

Applicant: KOREA TELECOMMUN

Inventor： RI SOKYU ,  IN KEIMO ,  CHO JUBI ,  BOKU SHINSHOKU ,  BOKU YONKI ,  GEN SHINSO ,  KIN KOFUKU ,  BOKU KIGO ,  AN SHOKO

IPC: H04J14/00 ,  H04B10/00 ,  H04B10/27 ,  H04J14/02 ,  H04L12/28 ,  H04L12/931 ,  H04Q11/00 ,  H04B10/02

Abstract: PROBLEM TO BE SOLVED: To reduce the system cost by realizing switching capability of a large capacity in an optical asynchronous transfer mode ATM switching system so as to considerably decrease number of hardware sets. SOLUTION: A wavelength division multiplex/time division multiplex conversion module 24 demultiplexes an optical channel that is wavelength-multiplexed via a transmission link 23 of each input terminal of an optical ATM switch, converts the wavelength into a primary wavelength for path distribution for each channel, compresses cells to prevent collision among plural cells and applies time division multiplex processing to the cells. Then a 1st path distributor 25 distributes each cell whose wavelength is converted into the primary wavelength to a primary destination, a time division multiplex processing/wavelength division multiplex processing switching module 26 demultiplexes a channel signal distributed to a path, inversely compresses the signal into an original signal form, converts the wavelength into a wavelength to be distributed to a final destination, compresses the cells to prevent cell collision again and a 2nd path distributor 27 distributes the signal that is inversely compressed to the final destination.