Title:
【発明の名称】ディジタル通信システム
Document Type and Number:
Japanese Patent JP3000973
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a digital communication system capable of a suppressing the occurrence of a useless transmission capacity without the need of considering matching with other nodes for the transmission ratio of STM/ATM. SOLUTION: On a transmission side node, an STM frame supplied in an asynchronous communication mode is divided in a cell making part 115a and plural STM data cells are obtained. The STM data cells and ATM cells supplied in an asynchronous communication mode are multiplexed in a multiplexing part 115d and gathered into a single virtual container. After adding and overhead to the virtual container, it is transmitted to a transmission line 13 in the asynchronous communication mode. On a reception side node, after removing the overhead first, in a restoration and distribution part, the STM data cells and the ATM cells are restored, respectively distributed and outputted. Among them, the STM data cells are synthesized by a frame making part and STM frame is restored.
Inventors:
Genichiro Sekine
Application Number:
JP23992997A
Publication Date:
January 17, 2000
Filing Date:
September 04, 1997
Export Citation:
Assignee:
NEC
International Classes:
H04J3/00; H04L12/28; H04Q3/00; (IPC1-7): H04L12/28
Domestic Patent References:
| JP10178451A | ||||
| JP8321818A | ||||
| JP632002A | ||||
| JP3258143A |
Other References:
【文献】米国特許5390184(US,A)
Attorney, Agent or Firm:
Umeo Yamauchi