providing such communication at reasonable costs is still remains a challenge. Considering the fact that cost reduction is not possible in the current telephonic system the only option left to us is to develop alternative voice communication technologies which can provide services at low cost.

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Design and Implementation
Of Voice over IP Chat Information Technology
Prepared by student :-
Sarhang Sliman Bakr
Supervised by :-
Mr. Diyar Fadhil
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Outline
 Introduction
 Problem Statement
 Objectives
 Design
 Implementation
 Features in my Application
 Conclusion
 Future Work
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Introduction
• Background
• What is VoIP?
• Why VOIP?
• Architecture of Internet phone system
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Problem Statement
• Many existing applications – Users face a delay while
communication
• User Interface
• Half duplex
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Objectives
• To implement a VoIP application that enables communication
between the personal computers (PCs).
• Overcome existing problem – real-time communication
• Full duplex
• Height quality
• User friendly Interface
• Low cost
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VOIP chat application
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Sender
port
Receiver
port
IP
address
calling
End
calling
History Text chat
Contact
information
Delete one
item in
history
Delete all
history
Sender
message
delete
message
Add ip to
contact
information
Delete IP

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Design and technology
• Visual Studio
• C# language
• Window form application
• Socket
• File IO to story data
• UDP and TCP
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Implementation
• Socket
• TCP and UDP
• Thread
• Dynamic link library(DLL)
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Features in my Application
• Voice chat
• Text chat
• History
• Contact information
• Peer to peer communication
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Conclusion
• Voice over IP (VoIP) is a methodology and
group of technologies for the delivery of voice
communications and multimedia sessions
over Internet Protocol (IP) networks.
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Future Work
• Video chat
• Video seminar
• Email
• Support android system and IOS.
• Send any file
• Phone to pc or pc to phone
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Questions
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Resource
• Uyless, B., Voice Over IP, Prentice Hall PTR,
2000.
• www.vocaltec.com, Homepage of VocalTec
Internet Phone
• www.itu.ch, Homepage of International
Telecommunications Union
• www.msdn.microsoft.com
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Thank you