VoIP By Godson Gera. Introduction Basic electronic communication system History of electronic...
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Transcript of VoIP By Godson Gera. Introduction Basic electronic communication system History of electronic...
VoIPBy Godson Gera
Introduction
Basic electronic communication system History of electronic communication Introduction to VoIP Benefits of VoIP Detailed description of VoIP
Basic electronic communication system
Source Information
Transmitter Receiver Destination Information
Transmission medium
History of Electronic Communication
1837- Samuel Morse developed the first electronics communication system which uses dots, dashes, and spaces generated through electromagnetic induction.
1876- Alexander Graham Bell and Thomas A. Watson were the first to successfully transfer human conversation
over a crude metallic-wire communications system they called the Telephone (this is the focus of my project)
1894- Guglielmo Marconi successfully transmitted the first wireless radio signals through earth’s atmosphere.
1920- Commercial radio began.
Introduction to VoIP
Traditional Telephone system
VoIP Telephone system
Full blown IP Telephony Solution
Benefits of using VoIP
Reduced call cost Free soft phone to soft phone calling
Detailed Description of VoIP The conversion of the analog voice into IP packets, using a
digital signal processor (DSP) embedded in the phone or using a PC in case of soft phones, which are software programs used with a hand set or headset connected to a PC
Transmitting IP packets over a packet or data network (where the packets travel along with other VoIP packets, data packets, Video over IP packets, etc.), which are sent to appropriate destinations by routers and switches
Conversion of IP packets back to voice (using DSP or computers).
Crescendo
System Architecture and Description
Overview of modules Structure and Relationship User Interface issues
The first module is the one running on the client side “Client Module”
The other running at the server side “Server Module”
Client Module
This module will be concerned with the following work load
The registration of the user onto the system Un-registering the user out from the system Transportation of voice packets
Server Module
This module will undertake the following work
Processing the requests of the user Maintaining records of the registered users
The Structure & Relationship between Modules
Client Module Location Server Module
Session Module Audio Module
CODEC Module
Request processing Module
User Information maintenance
Transportation Reception Module
Working Relationship of modules
Audio CODEC
Transport
Session
Audio
Transport
Session
CODEC
Location Server
Local Client (Bob)
Remote Client (Alice)
Request Processing
User Information Maintenance
Main GUI of the Crescendo
Conclusion
Advantages of VoIP
Cost reduction on long distance calls. Integration of voice and data networks.
Bandwidth optimization. Long term equipment cost reduction because of the single
physical. Single network also leads to decrement in maintenance and
support costs. This product provides many services on
single platform
Downsides of VoIP
Jitter Echo
Scope for future work
The peer to peer audio transmission can be extended to setup a conference.
Along with audio transmission, video transmission can also be enabled.
Call waiting, call forwarding, and voice mailbox.
Thank You