Switching system for controlling internal apparatuses in an exchange system
First Claim
1. A switching system comprising:
- a central controller which transfers control data to a plurality of end units; and
a switching module including a processor access controller which relays the control data transferred between the central processor and the plurality of end units;
wherein the central controller and the processor access controller comprise a transmitter and a receiver which set the control data based on a direct memory access (DMA) communication therebetween and based on an SD/SCN signal, to each bit position of each fixed time slot, said transmitter and said receiver each including a first bit converter for converting control data from X bits to Y bits (X>
Y) and a second bit converter for converting control data from Y bits to X bit, and said switching system further comprising an optical fiber cable having an electric-optical converter and an optical-electric converter at both ends thereof to couple the transmitter and the receiver.
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Accused Products
Abstract
A switching system for controlling internal apparatuses provided within an exchange system includes a central controller and a switching module including a plurality of objective apparatuses, each objective apparatus including a control data end unit, controlled by the central controller based on DMA communication and SD/SCN signal. Further, the central controller includes a first processor access controller which transfers control data to the control data end unit, in order to check and control each of objective apparatus, based on the DMA communication and the SD/SCN signal. The switching module includes a second processor access controller which relays the control data transferred between the first processor access controller and a plurality of control data end units-based on the DMA communication and the SD/SCN signal. According to the present invention, it is possible to realize high speed data transfer and high reliability based on the DMA communication and the SD/SCN signal between the central controller and each objective apparatus.
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Citations
7 Claims
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1. A switching system comprising:
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a central controller which transfers control data to a plurality of end units; and
a switching module including a processor access controller which relays the control data transferred between the central processor and the plurality of end units;
wherein the central controller and the processor access controller comprise a transmitter and a receiver which set the control data based on a direct memory access (DMA) communication therebetween and based on an SD/SCN signal, to each bit position of each fixed time slot, said transmitter and said receiver each including a first bit converter for converting control data from X bits to Y bits (X>
Y) and a second bit converter for converting control data from Y bits to X bit, andsaid switching system further comprising an optical fiber cable having an electric-optical converter and an optical-electric converter at both ends thereof to couple the transmitter and the receiver. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification