The document introduces a course on network IT entrepreneurship, focusing on key concepts like the OSI model and its layers that standardize communication functions in computing systems. It discusses how the internet works, including various networking technologies and protocols, as well as considerations for telecom finance. Additionally, it provides contact information for the course instructor, Mohammad Kermani.

1. Introduction
to
Network
IT Entrepreneurship course ( Dr. Meigoonpoury )
Mohammad Kermani, Fall 2015
University of Tehran, Faculty of Entrepreneurship

2. Google history of Network!
Let’s start!

3. To be abstract!

4. OSI Model
The Open Systems Interconnection model (OSI Model) is a conceptual
model that characterizes and standardizes thecommunication
functions of a telecommunication or computing system without regard
of their underlying internal structure and technology. Its goal is the
interoperability of diverse communication systems with standard
protocols. The model partitions a communication system
into abstraction layers. The original version of the model defined seven
layers.[WIKIPEDIA]

5. OSI Model

6. Internet Protocol Model

7. What’s inside?

8. Let’s play!!

9. How Internet works?

10. Physical / Network Interface
• Wire
• Ethernet
• xDSL
• Fiber
• GPON
• Ethernet
• Wireless
• Wifi
• Wimax
• GSM
• 3G/4G

11. xDSL

12. xDSL

13. GPON

14. Wireless

15. Multiplexing/Multiple Access
• TDM (TDMA)
• FDM (FMA)
• CDMA
• SDMA

16. Time Division

17. Frequency Division

18. Time/Frequency

19. Code! WOW!

20. Space Division!!?

21. Sectors!

22. Cellular

23. Cell Planning
• Size of cells
• Pattern of clusters
• Cost Trade-off
• Telecom Finance; Erlang, ARPU, etc.

24. Internet: ISPs and IXPs

25. Application Layer

26. Mohammad Kermani
moh.Kermani@gmail.com
Moh.Kermani@ut.ac.ir
telegram.me/mohkermani
Instagram.com/Mohkermani
Twitter: @mohkermani
Linkedin: mohkermani