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Q. What is centralized SPC?
In centralized control, all control equipment is replaced by a single processor which should be quite powerful. It should be capable of processing 10 to 100 calls per second, depending on the load on system and simultaneously performing many other ancillary tasks. A typical control configuration of an ESS employing centralized SPC is displayed in Figure. A centralized SPC configuration can use more than one processor for redundancy purposes. In almost all present day electronic switching systems using centralized control, only a two-processor configuration is used.
Q. Illustrate the principles of operation of centralized SPC and distributed SPC and compare their performance. Ans: In centralized control, all control equipment is replac
why Direct current flow through semiconductors but alternating current cannot flow?
D flipflop
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how to make a underwater propulsion system?
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1. Why must a modem be used to transmit binary data through a PSTN? (1) Use sketches and additional text to describe the following modulation methods. (a) Amplitude shift key
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