JNTU Kakinada B-Tech 4-1 ELECTRONIC SWITCHING SYSTEMS R13 March 2018 Question Paper

IV B.Tech I Semester Supplementary Examinations, February/March – 2018
ELECTRONIC SWITCHING SYSTEMS (Electronics and Communication Engineering)Time: 3 hours Max. Marks: 70
Question paper consists of Part-A and Part-B
Answer ALL sub questions from Part-A
Answer any THREE questions from Part-B
*****

PART ?A (22 Marks)1. a) What do you mean by 1 Erlang? Explain in brief. [3]
b) Is TS network non blocking? Explain. [3]
c) Explain about charging plan. [4]
d) Differentiate LAN and WAN. [4]
e) What is call packing in switching network? [4]
f) Explain about broadband ISDN and ADSL. [4]

PART ?B (3×16 = 48 Marks)2. a) Explain the Cross bar Exchange. [8]
b) What is different switching network configuration? Compare their features. [8]

3. a) Discuss about the combination switching with neat sketch. [8]
b) Explain the load sharing operation of Centralized SPC. [8]

4. a) Write about modes of operation of Common channel Signaling. [8]
b) Briefly explain the three form of signaling techniques. [8]

5. a) Explain connection oriented and connection less services with examples. [8]
b) Explain public switched data networks. [8]

6. a) Write short notes on Strict- Sense non-blocking Networks. [8]
b) Explain virtual circuit switching concept. [8]

7. a) Write about Signaling in ISDN. [8]
b) Explain the ISDN connections, groupings and reference points. [8]

Code No: RT41045
Set No. 1
R13
1 of 1

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