2. Prepared by: Hansa shingrakhia M.E.(CSE-I) Roll no.:20 Exam no.5018
VOICE OVER INTERNET PROTOCOL
Prepared by: Hansa shingrakhia M.E.(CSE-I) Roll no.:20 Exam no.5018
Guided by:
Prof. K.R.Parmar
L.D.Engg.College.

3. Overview of Topics What is VoIP? How does it work?
What is advantages using VoIP rather PSTN?
Basic system component of VoIP.
Classification of VoIP.
VoIP Network System.
Protocol of VoIP.
Benefits of VoIP.
Drawback of VoIP.
Application of VoIP.
Development challenges of VoIP.
Conclusion
References

4. What is VOIP ?
VOIP stands for ‘ Voice-Over Internet Protocol 'VoIP allows you to make telephone calls using a computer network, over a data network like the Internet
VOIP or Voice Over Internet Protocol is a technology whereby voice conversations are compressed digitized, encapsulate inside of I.P. packets and transported over a data network. The main difference is that the traditional wired network we have been using for years allows only one caller per channel and VOIP compression allows many callers per channel.

5. How does it work?
VOIP technology (also called "Packet Switching") does not use direct connections. Rather, voice data is sent through an IP gateway and is broken down into small "packets" that contain the destination address.
Packets are then sent via IP to its destination, where they are reassembled by the recipient IP gateway and delivered to the recipient of the call.
As there is no direct connection, packets with different destinations may follow the same path, and those with the same destinations may follow divergent paths depending on network conditions.

6. What is the advantages using VoIP rather PSTN?
When you are using PSTN line, you typically pay for time used to a PSTN line manager company: more time you stay at phone and more you'll pay. In addition you couldn't talk with other that one person at a time.
In opposite with VoIP mechanism you can talk all the time with every person you want (the needed is that other person is also connected to Internet at the same time), as far as you want (money independent) and, in addition, you can talk with many people at the same time.
If you're still not persuaded you can consider that, at the same time, you can exchange data with people are you talking with, sending images, graphs and videos.

7. BASIC SYSTEM COMPONENTS OF VOIP
A general VoIP network
CLIENTS
SERVERS
GATEWAYS

8. Classification of connection
Computer to Computer Communication
PC to PC Connection

9. Computer to Phone Communication
PC to PHONE connection

10. Phone to Phone Communication

11. VoIP NETWORK SYSTEM:

12. Protocols of VOIP

13. Benefits of VOIP Lower hardware & support costs
Reduced long distance call costs:
Increased flexibility for application additions:
Network Efficiency
Simplification and Consolidation

14. Drawbacks of VOIP Quality of service: Internet Connection
Power Outages
Emergency calls
Standards and interoperability
Voice Quality Issues
Packet Loss
Delay
Jitter
Overhead

15. APPLICATION OF VOIP Enterprise Environment Application
The Remote Worker / Branch Office application
The Residential Application

16. DEVELOPMENT CHALLENGES Standard and Interoperability issues Voice quality issues Addressing/Directories Security issues Billing issues

17. Conclusion
As you can see, using VoIP services can be very rewarding and beneficial. It has the benefits of: huge cost savings compared to traditional phone services; taking the benefits of VoIP along with you anywhere in the world; and enjoying more free features and greater functionality as compared to your regular phone.

18. References www.google.com www.howstuffworks.com www.voip911.gov
Voice over IP technologies by :Mark A. miller
Voice over IP(VoIP) by: Regis j. Bates

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