Subject Code: 2161009
GUJARAT TECHNOLOGICAL UNIVERSITY
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BE - SEMESTER-VI (NEW) EXAMINATION - WINTER 2018
Subject Name: Telecommunication Switching and Applications
Time: 02:30 PM TO 05:00 PM
Instructions:
- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
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Q.1
(a) List out the factors limiting subscriber loop length. Discuss the solution to overcome the limitations. [03]
(b) List and explain in short design parameters of switching system. [04]
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(c) What is GOS and blocking probability? Explain in detail [07]
Q.2
(a) Define busy hour, peak busy hour and time consistent busy hour. [03]
(b) What is side tone? How it is essential for telephone circuit? Explain half duplex telephone circuit with side tone coupling. [04]
(c) Discuss briefly about various modes of centralized space division switching. [07]
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OR
(c) Explain briefly about various levels processing in distributed space division switching. [07]
Q.3
(a) Explain exchange functions BORSCHT [03]
(b) Explain common channel signaling of telephone network. [04]
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(c) Explain Time Multiplexed Time Switching with proper example. [07]
OR
Q.3
(a) List four broad categories of enhanced services provided by SPC [03]
(b) Draw and explain schematic representation of uniselectors. [04]
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(c) Derive the Steady state equation for birth-death process in telecommunication network. [07]
Q.4
(a) List duties of transport layers. [03]
(b) List advantages of ISDN. [04]
(c) With block diagram explain basic Time multiplex time switch [07]
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OR
Q.4
(a) List duties of network layers. [03]
(b) What is LAN? Discuss various LAN topologies. [04]
(c) Explain the protocol architecture of SS7. [07]
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Q.5
(a) Explain Videotex service. [03]
(b) Discuss functionality of Link to link layers of OSI model. [04]
(c) Discuss about Switching Hierarchy and Routing in telecommunication. [07]
OR
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Q.5
(a) Briefly explain LCR system for telephone traffic. [03]
(b) Explain the two types of congestion. [04]
(c) Explain the functionality of network and transport layer in ISO-OSI layer. [07]
Date:04/12/2018
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Total Marks: 70
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