Basics of Telephony: Telephone Network overview; Subscriber Loop; Signalling in the Telephone Network; Overview of ISDN, BISDN and ATM Technologies.;Circuit Switching in Telephone Networks: Crossbar switch; Clos networks; Clos and Slepian-Duguid theorems; Recursive construction of Clos Networks; Time switching, TMS and TST switches; Lee and Jacobeus blocking analysis; Routing in R-NB network; Switch processor, Call processing and overload control; Example telephone switches.;Cell Switching: Generic Switch; Input and output queued switches; Shared memory and Shared medium switches, Crossbar switch, Complexity and scaling disdvantage of output queued switches, Knockout principle; Interconnections for large switches, Self routing architectures, Batcher-banyan networks; Unbufferred banyan switches, Buffered banyan, Tandem banyan, Speedup, Parallelism and Channel grouping toenhance input queued switches; Concentrators superconcentrators and Copy networks, Examples of ATM switches, IP Switching from VC based fixed length packet switches.;Multiplexing and Routing in Circuit Switched Networks: Abstract System Models Erlang Blocking Models; Overflow Models, Equivalent Random Theory, Haywards Approxmn and Introductory Non Poisson Arrival Processes; Product form solution; Erlang Fixed Point Solution; Techniques to choose good routes; Alternate Routing; Dynamic Routing, Least Busy Alternate Routing.
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G. Hebuterne, Traffic Flow in Switching Systems, Artech House, 1987.
A. Girard, Routing and Dimensioning in Circuit Switched Networks, 1986.
J.C. Bellamy, Digital Telephony, 2nd Edition, John Wiley, 1992.