What do you meant by signalling? Briefly explain the function of a signalling. Describe the subscriber line signalling used for analogue telephony. Describe the advantages of common channel signalling. Explain the following terms: i. Inter register signalling. ii. Link by link signalling. iii. End to end signalling. Draw a diagram for the SS7 protocol architecture. List the four classes of the signalling connection control part (SCCP) service, which are available and explain each one briefly. Define meta-signalling and explain it is use. Describe the function of the SAAL and its SSCOP sublayer. Explain how channel associated signalling was performed using PCM multi-frames.

What Is branch datapath?

EEE

What is a transmission gate? Draw its circuit circuit diagram. How does it operate? What is the need for a transmission gate? What is it disadvantage?

b) Explain the main functions of i) the source and ii) the channel coding blocks in a modern communication system. Error correction is needed to ensure reliable transmission of signals, but what is its disadvantage?

2) Answer the following sentence with (True) or (False) and correct the false answer: 1. CMPS is used with REPE, REPZ, REPNE and REPNZ. 2. Loop instruction is equal to JNZ instruction 3. SAL and SHL have the same operation. 4. The instruction MOV BX,'B' is allowed. 5. Segment override prefix means we can use any segment register to have the physical address. 6. In CBW, the MSB of AX is copied to all the bits in DX. 7. The following piece of code is used to: Complement PF and CF LAHF AND AH, FOH XOR AH, OFH SAHF 8. In conditional jump, the next instruction is executed if the condition is not met. 9. Assume BL=11H, AX =FFB6 H , the result of executing IDIV BL is AX=FAFD H 10. The instruction queue in the BIU works on LIFO basis.

The terminal count up (TCu) and terminal count down (TCd) of 74193 are normally ____ . The TCu is used to indicate that ____ count is reached.  HIGH, 9th B.LOW, 9th C. HIGH, 15th D. LOW, 15 E. LOW, maximumD. a BCD decade up/down counter E. a register

288 For the Timing Waveform Diagrams shown below, which is the cofrect drawing for a NOR gate? A. Drawing A B. Drawing B C. Drawing C D. Drawing D Drawing A) Drawing B) Drawing C) Drawing D)

This is Data comunication problem

(a)A typical TTL IC is numbered as DM54AS04N.Explain the meaning of each portion of this number?- (b) What are types of scale of integration? Briefly explain VLSI?( (c)Draw the diagram of Monostable Multivibrator using 555 timer? -