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Q. explain the architecture of SS7 and compare with seven-layer OSI architecture.
Ans:
A block schematic diagram of CCITT no. 7 signalling system is displayed in figure. Signal messages are passed from central processor of the sending exchange to CCS system. This comprises microprocessor based subsystem. Signalling control subsystems, signalling termination subsystem and error control subsystem. Signalling control subsystem structures the messages in appropriate format and queues them for transmission. When there aren't any messages to send, it produces filler messages to keep the link active. Messages then passed to signaling termination sub system, where complete signal units (SU) are assembled using sequence numbers and check bits generated by error control subsystem. At the receiving terminal, reverse sequence is carried out.
Determine the Service and Backwash Rates The system on site is a pressure sand filter, with a service curve. The filter is backwashed using the feed pump, at a higher flow rate, s
(1) An argon ion laser, emitting light at a wavelength of 488nm with a beam divergence of 150 firad, is used to illuminate the moon. (i) Assuming the earth-to-moon distance is 3
For a given logic family, consider VOL = 0.25V and VOH = 5 V . For a given circuit, VIL = 0.96 V and VIH = 2.18 V. Find the largest positive-going and largest negative-going nois
Transparent latch D flip Flop A typical example of this type of D flop is 7475 shown in figure when CLK connected is enable signal is high and the flip flop is enabled
Calculate the maximum length of an optical fibre that exhibits 0.8dB/km attenuation if the optical output is 10mW and the power launched at the input is 150mW. [Hint: Loss, L=10 lo
up-down counter
Q. What can explain the failure of relative PPP to hold in reality? Answer: Government procedures of the price level differ from country to country. One cause for thes
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Q. Explain about Half Duplex Transmission? Half Duplex Transmission A half-duplex channel can receive andsend, though not at the same instance. It's like a one-lane bridge w
Equivalent Circuit of a Synchronous Machine A review of the material about elementary synchronous machines is very helpful at this stage to recall the principles of operation f
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