GTU BE 2020 Summer Question Papers || Gujarat Technological University
Subject Name: TELECOMMUNICATION SWITCHING SYSTEMS AND NETWORKS
Time: 10:30 AM TO 01:00 PM Total Marks: 70
3. Figures to the right indicate full marks.
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER- VI EXAMINATION — SUMMER 2020
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Subject Code: 2161103 Date:04/11/2020Subject Name: TELECOMMUNICATION SWITCHING SYSTEMS AND NETWORKS
Time: 10:30 AM TO 01:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
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2. Make suitable assumptions wherever necessary.3. Figures to the right indicate full marks.
| MARKS | ||
| Q.1 | (a) Define the following terms. | 03 |
| (i) Grade of Service (ii) Trunks line (iii) Erlang | ||
| (b) Differentiate between Manual Switching & Automatic Switching. | 04 | |
| (c) Describe Birth-Death process with the help of state transitions in contest of telephone traffic. | 07 | |
| Q.2 | (a) Compare micro-programmed control and hard wired control. | 03 |
| (b) Draw and explain simplex and half-duplex telephone circuits with necessary equations. | 04 | |
| (c) Explain Enhanced Services of Electronic Space Division Switching. | 07 | |
| OR | ||
| (c) Explain Three Stage Network in detail. | 07 | |
| Q.3 | (a) Explain BRI and PRI in detail. | 03 |
| (b) Explain 3x3 and 6x6 crossbar switching. | 04 | |
| (c) Explain Signaling Techniques used in Telephone Networks. | 07 | |
| OR | ||
| Q.3 | (a) Compare Inchannel and Common Channel Signaling | 03 |
| (b) Draw and explain Working of EPABX in brief. | 04 | |
| (c) Explain Time Multiplexed-Space Switching. | 07 | |
| Q.4 | (a) Draw any four Signaling tones in automatic exchange. | 03 |
| (b) Explain Subscriber, Loop Systems. | 04 | |
| (c) Explain Store and Forward Data Switching Architecture. | 07 | |
| OR | ||
| Q.4 | (a) What do you mean by Blocking Probability? | 03 |
| (b) Explain Stored Program Control in brief. | 04 | |
| (c) Explain Time Multiplexed Time Switching. | 07 | |
| Q.5 | (a) Explain Bit stuffing related to data Link Layer. | 03 |
| (b) Explain Input controlled time division space switching with necessary diagram. | 04 | |
| (c) Explain ISDN in detail. | 07 | |
| OR | ||
| Q.5 | (a) Explain Synchronous duplex mode of Dual processor with necessary diagram. | 03 |
| (b) Differentiate between Circuit switching & Packet Switching. | 04 | |
| (c) Explain OSI Model in detail. | 07 |
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