Q.1
14 Marks(a)
Define Blocking Probability
(b)
Explain SPC in brief.
(c)
Draw & Explain Manual Switching System.
Gujarat Technological UniversitySummer 2025 examination
GTU 2161103 Telecommunication Switching systems and Networks Summer 2025 Question Paper & PDF
B.E. · EC Engineering · Semester 6 · Subject code 2161103
- Total
- 70 marks
- To pass
- 23 marks (33%)
- Duration
- 2.5 Hours 10:30 AM – 1:00 PM
- Questions
- 5 with internal choice
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Q.2
14 Marks(a)
Define: (a) Side Tone (b) Erlang.
(b)
Explain side tone coupling circuit and its importance in telephone.
(c)
Draw & Explain Subscriber Loop Systems.
OR
(c)
Differentiate between Circuit switching & Packet Switching.
Q.3
14 Marks(a)
Write a short note on Star topology.
(b)
Explain Time Multiplexed Space Switching.
(c)
Draw & Explain three-stage combination switching.
OR
(a)
Define connection oriented and connection less protocol.
(b)
Explain Inchannel Signaling.
(c)
Explain ISO-OSI Reference Model.
Q.4
14 Marks(a)
Define Grade of Services.
(b)
Discuss the operation and working of SS7.
(c)
Explain Data transmission in PSTNs.
OR
(a)
Explain channel association signaling with necessary diagram.
(b)
Differentiate single stage and multistage network.
(c)
Explain Broadband ISDN.
Q.5
14 Marks(a)
Explain in brief: Cellular mobile telephony.
(b)
Explain the load sharing mode of centralized SPC.
(c)
Explain Blocking Models and Loss Estimates.
OR
(a)
Explain Enhanced Services of Electronic Space Division Switching.
(b)
Explain Switching Hierarchy and Routing.
(c)
Describe Birth-Death process with the help of state transitions in contest of Telephone traffic. _________________________
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About this paper
Official Gujarat Technological University (GTU) examination paper for Telecommunication Switching systems and Networks (Summer 2025, B.E. · EC Engineering, Sem 6). Features complete 70-mark regular & remedial examination pattern, official marking distribution across all 5 questions, and direct 1-click official PDF download.
Transcribed for student exam preparation from Gujarat Technological University official examination archives. Questions, syllabus guidelines, and curriculum marking schemes remain the intellectual property of Gujarat Technological University.