Digital signal transmission apparatus
AssigneeKabushiki Kaisha Toshiba
InventorsKazuyoshi Matsuno, Hideki Ishibashi
Life of this patent
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Abstract
In addition to a main monitor/control module, sub-monitor/control modules are provided, which monitor the operating conditions of transmission sections in real time through a CPU bus. The main monitor/control module collects monitor data from each sub-monitor/control module at a given timing through a LAN and processes the monitor data collected.
Claims7
A digital signal transmission apparatus which has a plurality of transmission units each including a line connection unit and in which the transmission units transmit and receive multiplexed digital signals to and from an external transmission apparatus, said digital signal transmission apparatus comprising:
- a first transmission line having a first transmission speed and a second transmission line having a second transmission speed lower than the first transmission speed;
- first monitor/control units connected by the first transmission line to said plurality of transmission units, respectively, for monitoring an operating condition of each transmission unit in real time and through the first transmission line;
- and
- a second monitor/control unit connected to the first monitor/control unit by the second transmission line and a third transmission line having a higher transmission speed than the second transmission line,
- wherein said first monitor/control units comprises:
- means for classifying the monitor data of each transmission unit into a first monitor data item of high emergency and a second monitor data of low emergency;
- and
- means for transferring the first monitor data to the second monitor/control unit through the third transmission line and transferring the second monitor data to the second monitor/control unit through the second transmission line, and
- said second monitor/control unit comprises:
- means for performing, in real time, a necessary process on the basis of the first monitor data transferred through the third transmission line;
- and
- means for performing, at a given timing, a necessary process on the basis of the second monitor data transferred through the second transmission line.
Dependencies are inferred from the claim text.