Telecommunication Systems and Networks

Course Description

Telecommunication network organization. Telecommunication system architecture and functionality. Core and access networks, circuit switching and packet switching. Transmission media, digital modulation techniques and line codes. Network synchronization, synchronous digital hierarchy (SDH). Optical transmission systems and networks. Optical link dimensioning. Wavelength division multiplexing, network protection and restoration. Access and metropolitan area networks, broadband access. Routing and switching. Reference model and switching system software structure. Call and services. User and network signalization. Network management.

General Competencies

Basic knowledge about telecommunication systems and networks. Good understanding of their basic principles, structure, architectures and functions. Ability to carry out operation and maintenance of contemporary telecommunication networks.

Learning Outcomes

  1. to define architecture and organization of communication network
  2. to explain how telecommunication network operates and functions of network nodes
  3. to apply knowledge about communication networks and services
  4. to analyze services, as well as service interactions, in odrer to select appropriate ones
  5. to analyze organization of public and private networks and services
  6. to define basic configuration for transport and necesary components
  7. to create network model including access functions, transport functions and services

Forms of Teaching


Lectures, with lecture notes and presentations available in advance on the web.


Midterm exam and final exam.

Laboratory Work

laboratory assignments include measurements on optical components and tracing and analysing of signaling messages.


Regular consultations hours in four tems every week.

Acquisition of Skills

Literature search on telecommunication systems and information transport throught core network.

Other Forms of Group and Self Study

Homeworks related to case studies.

Grading Method

By decision of the Faculty Council, in the academic year 2019/2020. the midterm exams are cancelled and the points assigned to that component are transferred to the final exam, unless the teachers have reassigned the points and the grading components differently. See the news for each course for information on knowledge rating.
Continuous Assessment Exam
Type Threshold Percent of Grade Threshold Percent of Grade
Laboratory Exercises 100 % 15 % 100 % 15 %
Homeworks 50 % 10 % 50 % 10 %
Class participation 0 % 5 % 0 % 5 %
Attendance 0 % 5 % 0 % 5 %
Mid Term Exam: Written 50 % 25 % 0 %
Final Exam: Written 50 % 30 %
Final Exam: Oral 10 %
Exam: Written 50 % 50 %
Exam: Oral 15 %

All laboratory assignements should be completed succefully.

Week by Week Schedule

  1. Transport technologies; Standards; Network topologies; Telecommunicaton network organization: core and access network; Transport network of Republic of Croatia; Multiplex systems; Network layers; Transmission rate; Channel switching.
  2. Packet switching; Transmission media: optical, copper and wireless; Basic parameters. Digital modulation techniques. Line codes.
  3. Speech and hearing propertie: power distribution, spectrum, intelligibility; Telephony channel; Signalization network and CCSS No.7; Dependent mutual syncronization; Sliding in PDH; Frame synchronization.
  4. Network synchronization, plesiochronous and synchronous network. Multiplexing systems with time, wavelength and code division.Plesiochronous and synchronous digital hierarchy (SDH).
  5. Optical transmission systems and networks; Basic system components and limits; Optical link dimensioning; Wave division multiplex (WDM); Protection and regeneration; Line coding.
  6. Access networks: wire, wireless and optical; features, technologies and application.
  7. Metropolitan area networks (MAN). Technologies Ethernet and resilient packet ring (RPR)
  8. Mid-term exam.
  9. Analog subscriber signalization. Dialing, analyzing of address, tones and codes for display information. Case studies.
  10. Digital subscriber signaling system no.1 - Layers, reference points, ISDN channels and protocols; PRA and BRA interfaces. Coding, spectrum and transport rate.
  11. Network signalling. Signalling system number 7 (SS7). SS7 network: components, architectures, hierarchy and protocol. Service centralization. SS7 - IP interconnections. Case study.
  12. Call and service interactions. Basic call and additional service. Call states. Service interaction. Dialling in real time and numbering plane. ISDN addressing.
  13. Intelligent network (IN) components and architecure. IN basic call state model, detection points. Intelligent network service processing. IN service creation and standard IN services.
  14. Switch and switching fabrics. Blocking and nonblocking switching architectures. Space and time switching. Switching with memory. Self routing, Banyan networks: Banynan, Delta, Omega.
  15. Final exam.

Study Programmes

University undergraduate
Telecommunication and Informatics (module)
Specialization courses (6. semester)


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R. Ramaswami, K. N. Sivarajan (2002.), Optical Networks: A Practical Perspective, Morgan Kaufmann Publishers
J. Župan (1978.), Uvod u komutacijske sustave, Školska knjiga
N. Kularatna, D. Dias (2004.), Essentials of Modern Telecommunications Systems, Artech House