Semester Offering: August

To provide a grasp of the architectures, hardware and services of modern switching technology. Laboratory experiments at real switches give hands-on experience in operation and maintenance.


Evolution of Switching Systems. Switching System Architecture. Hardware and Software Structure of the Digital Switch. Signaling. Examples of Existing Digital Switches. ATM Switching. New Trends in Switching: Photonic Switching, IP Switching. Laboratory Experiments using DX200 Switching Systems.


Consent of Instructor


I Evolution of Switching Systems
1. The Role of Switching Systems in Telecommunication Networks
2. Step By Step and Crossbar
3. Stored Program Control (SPC)
4. Digital Switching
5. ATM Switching

II Switching System Architecture
1. Subscriber and Line Interface
2. Switching Network: Matrix and Channel Graph Representations, Blocking,
Non-Blocking , and Rearrangeable Networks
3. Control Unit
4. Operation and Maintenance
5. Switching Process: Call Detecting, Number Analysis, Call Routing, Supervision, and Metering
6. Signaling Equipment

III Hardware and Software Structure of the Digital Switch
1. Time Switches and Space Switches
2. Path Searching
3. Processor Systems Architecture and Functions
4. Reliability and Fault Recovery
5. Man Machine Interface (MMI)
6. Examples of the Present Digital Switching Systems

IV ATM Switching Architectures and Performance
1. ATM Switch Architectures
2. Full-, and Partial-Connection Multistage Networks
3. Self –Routing Networks
4. ATM Switching Structures: Minimum-Depth Blocking Networks, Non-Blocking Single-, and Multiple-Queuing Networks, Arbitrary-Depth Blocking Networks
5. Fault-Tolerant ATM Switching Architectures

V New Trends in Switching
1. Photonic Switching
2. IP Switching


1. Structure of DX200 System
2. DX200 Man Machine Language
3. Routing and Charging Administration
4. Subscriber and Traffic Administration


Handouts and Laboratory Manuals.


E.R. Coover:
ATM Switches, Artech House, 1997, 336 pp.
G. Hebuterne:
Traffic Flow in Switching Systems, Artech House, 1987, 272 pp.
J.H. Hui:
Switching and Traffic Theory for Integrated Broadband Networks, Kluwer Academic Publishers, 1990, 347 pp.
A. Olsson, et al:
Understanding Telecommunications 1, Ericsson Telecom, Telia and Studentlitteratur, Lund 1997, 493 pp.
R.O. Onvural:
Asynchronous Transfer Mode Networks, Artech House, 1994, 260 pp.
A. Pattavina:
Switching Theory, Architectures and Performance in Broadband ATM Networks, John Wiley & Sons, 1998, 415 pp.
M. Schwartz:
Broadband Integrated Networks, Prentice Hall, New York, 1996, 369 pp.
Recommendations, Volumes II, IV, and VI.


IEEE Communications Magazine
IEEE Transactions on Communications




The final grade will be computed from the following components: midsem exam. (30%), final exam. (50%), and laboratories (20%).
Closed-book examination is normally used in both midsem exam and final exam.