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Discuss the various enhanced services that can be made available to the subscribers because of stored program control.
One of the instant benefits of stored program control is as a host of new services can be made obtainable to the subscriber. They can be grouped in four types:
1. Services related with the calling subscriber and designed to decrease the time spent on dialling and dialling number's errors.
a. Abbreviated dialling
b. Recorded number calls or no dialing calls
c. Call back while free
2. Services connected with the called subscriber and designed to raise the call completion rate.
a. Call forwarding
b. Operator answer
3. Services including more than two parties.
a. Calling the number record
b. Call waiting
c. Consultation hold
d. Conference calls
4. Miscellaneous
a. Automatic alarm
b. STD Barring
c. Malicious call tracing
An amplifier has an input resistance of 600 ohms and a resistive load of 75 ohms. When it has an rms input voltage of 100 mV, the rms output current is 20mA. Find the gain in dB.
Give the circuit of a TTL NAND gate and explain its operation in brief. Ans: Operation of TTL NAND Gate: Fig.(d) Demonstrates a TTL NAND gate with a totem pole output.
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Q. Explain about distributed systems? A Distributed System in that Data, Process and Interface component of information System are distributed to many locations in a computer n
Minimise the logic function F (A, B, C, D) = Π M (1, 2, 3, 8, 9, 10, 11,14) ⋅ d (7, 15) Use Karnaugh map. Ans. Given function F=∏M(1,2,3,8,9,10,11,14).d(7, 15) F'=B'D+B'C+AC+AB'
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In 32bit IP Addressing scheme all 1's represent? All 1's represent limited broadcast in 32 bit IP Addressing scheme.
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