公开(公告)号：EP0827305A4

公开(公告)日：2001-01-31

申请号：EP96933623

申请日：1996-10-11

申请人： NIPPON TELEGRAPH & TELEPHONE

发明人： TAMURA MOTOSHI ,  OKAGAWA TAKATOSHI ,  NAKAMURA HIROSHI ,  KAIYAMA AKIRA ,  ONUKI MASAFUMI ,  NAKAJIMA AKIHISA

IPC分类号： H04L12/951 ,  H04Q11/04 ,  H04L12/28

CPC分类号： H04L12/5601 ,  H04L2012/5649 ,  H04L2012/5652 ,  H04L2012/5656 ,  H04L2012/5672

摘要： Short-cell multiplex for transmitting short data (basically, data of 48 bytes, but data of 48 bytes are also transmittable) generally shorter than the payload of a standard ATM cell through an ATM network. A standard ATM cell generating device (1) converts various forms of input information into short cells, efficiently transfers the short cells to a standard ATM cell in view of the length of the information into consideration, and outputs the standard ATM cell to a B-ISDN network (7). A standard ATM cell disintegrating device (2) disintegrates the standard ATM cell generated by the device (1) and inputted through the network (7) into short cells, converts the short cells into the original various forms of input information, and outputs the information through transmission lines. The short-cell ATM multiplex causes less delay, enhances the efficiency of transmission lines, and has a high compatibility with the standard ATM system.

公开(公告)号：EP0810757A4

公开(公告)日：2000-07-19

申请号：EP96928705

申请日：1996-08-30

申请人： NIPPON TELEGRAPH & TELEPHONE

发明人： TSUBOYA HISAKAZU ,  NAKAMURA HIROSHI ,  ONUKI MASAFUMI ,  NAKAJIMA AKIHISA

IPC分类号： H04L12/64 ,  H04L12/801 ,  H04L12/853 ,  H04L12/911 ,  H04Q11/04 ,  H04L12/28

CPC分类号： H04Q11/0478 ,  H04L12/6418 ,  H04L2012/5616 ,  H04L2012/563 ,  H04L2012/5653 ,  H04L2012/5671 ,  H04L2012/5672 ,  H04L2012/6481 ,  H04L2012/6494

摘要： An ATM transmission system which transmits voice data in an asynchronous transfer mode (ATM), in which a silent section of a call is detected and the silent section is not physically sent as an ATM cell through a transmission line, realizing compression of the silent section on the transmission line. The sending side detects the silent section, generates voice/silence information, and generates a silence starting cell and a silence ending cell. The receiving side generates silent sections at regular time intervals upon receiving the silence starting cell and returns to its normal voice cell receiving state upon receiving the silence ending cell. Since the silent sections are not transmitted, the number of occupied bands is reduced on the transmission line and the efficiency of the transmission line can be improved.