VOIP
Content
VOICE OVER INTERNET PROTOCOL (VOIP)
PRESENTED BY
SHAILENDRA KUSHWAHA SHATISH KUMAR RIDHIMA TIWARI RAVI RANJAN
1
INTRODUCTION TO VOIP
Basically, VoIP means Voice transmitted over a Digital Network” Voice over Internet Protocol (VoIP) is an emerging set of applications which allows you to make telephone calls over the Internet. Change voice transmission from an all analog to an all digital network VoIP was originally developed to provide voice communication between computer users in different locations. Although it still has this application, it has been further developed into a telephone network in its own right It all started back in 1995 when Israeli computer enthusiasts made the first computer to computer voice connection. In the same year this technology was developed into a software package called Internet Phone Software. All that was needed to talk to another computer user was a modem, sound card, speakers, and a microphone.
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HOW IT WORKS
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Cont……
VoIP services convert your voice into a digital signal that travels over the Internet. This is done by 'sampling' your voice -- dividing the analog sound signal into discrete steps that can be assigned a number value. Once your voice is digitized, the data can be compressed
This compressed digital data is split up into 'packets' of about 1500 bytes that can be transferred over the Internet. As well as the voice data, the packets contain information about their origin, their destination, and a timestamp that allows them to be reconstructed in the correct order. Once they arrive at their destination, they are reassembled and converted from digital back into analog so that the receiving party can hear your voice.
VoIP can allow you to make a call directly from a computer, a special VoIP phone, or a traditional phone connected to a special adapter . In order for voice data to be transmitted without noticeable delays, a 4 high speed broadband Internet connection is necessary
SERVICE PROVIDE BY VOICE OVER IP
PHONE TO PHONE
PHONE TO PC
PC TO PHONE
FAX TO E-MAIL
E-MAIL TO FAX FAX TO FAX WIRELESS CONECTIVITY PABX & SOFT SWITCH IMPLEMENTATION
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VOIP EXAMPLES
Xbox Voice Windows messenger AOL Instant Messenger
Motorola Phone Adapter (Vonage)
Cisco Phone
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ADVANTAGES OF VOIP
There are many advantages of VOIPAs standards are developed it becomes more reliable and achieves greater acceptance.
VoIP will eventually replace traditional phone service.
One of the main advantages of VoIP is the low cost .
Another advantage of VoIP is portability .
Simplicity.
Call forwarding, call waiting, voicemail, caller ID
and three-way calling
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DISADVANTAGES OF VOIP
However, there are a few disadvantages to VoIP and they are listed below. Continuous service during a power outage Emergency calls Sound quality. Security risks and worries are becoming increasingly prominent where VoIP is concerned.
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THE POWER OF VOIP
Cheaper than PSTN (Public Switched Telephone Network) service providers. Compatible with web-based applications.
Enabling the user to change, adjust , or listen to these features over
the Internet. Long distance is usually provided free of charge.
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CONCLUSION
VoIP is one of many higher-level communications capabilities among devices connected to the Internet. VoIP is not an application.
VoIP is a capability that is part of many applications.
VoIP capabilities are already pervasive.
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PRESENTED BY
SHAILENDRA KUSHWAHA SHATISH KUMAR RIDHIMA TIWARI RAVI RANJAN
1
INTRODUCTION TO VOIP
Basically, VoIP means Voice transmitted over a Digital Network” Voice over Internet Protocol (VoIP) is an emerging set of applications which allows you to make telephone calls over the Internet. Change voice transmission from an all analog to an all digital network VoIP was originally developed to provide voice communication between computer users in different locations. Although it still has this application, it has been further developed into a telephone network in its own right It all started back in 1995 when Israeli computer enthusiasts made the first computer to computer voice connection. In the same year this technology was developed into a software package called Internet Phone Software. All that was needed to talk to another computer user was a modem, sound card, speakers, and a microphone.
2
HOW IT WORKS
3
Cont……
VoIP services convert your voice into a digital signal that travels over the Internet. This is done by 'sampling' your voice -- dividing the analog sound signal into discrete steps that can be assigned a number value. Once your voice is digitized, the data can be compressed
This compressed digital data is split up into 'packets' of about 1500 bytes that can be transferred over the Internet. As well as the voice data, the packets contain information about their origin, their destination, and a timestamp that allows them to be reconstructed in the correct order. Once they arrive at their destination, they are reassembled and converted from digital back into analog so that the receiving party can hear your voice.
VoIP can allow you to make a call directly from a computer, a special VoIP phone, or a traditional phone connected to a special adapter . In order for voice data to be transmitted without noticeable delays, a 4 high speed broadband Internet connection is necessary
SERVICE PROVIDE BY VOICE OVER IP
PHONE TO PHONE
PHONE TO PC
PC TO PHONE
FAX TO E-MAIL
E-MAIL TO FAX FAX TO FAX WIRELESS CONECTIVITY PABX & SOFT SWITCH IMPLEMENTATION
5
VOIP EXAMPLES
Xbox Voice Windows messenger AOL Instant Messenger
Motorola Phone Adapter (Vonage)
Cisco Phone
6
ADVANTAGES OF VOIP
There are many advantages of VOIPAs standards are developed it becomes more reliable and achieves greater acceptance.
VoIP will eventually replace traditional phone service.
One of the main advantages of VoIP is the low cost .
Another advantage of VoIP is portability .
Simplicity.
Call forwarding, call waiting, voicemail, caller ID
and three-way calling
7
DISADVANTAGES OF VOIP
However, there are a few disadvantages to VoIP and they are listed below. Continuous service during a power outage Emergency calls Sound quality. Security risks and worries are becoming increasingly prominent where VoIP is concerned.
8
THE POWER OF VOIP
Cheaper than PSTN (Public Switched Telephone Network) service providers. Compatible with web-based applications.
Enabling the user to change, adjust , or listen to these features over
the Internet. Long distance is usually provided free of charge.
9
CONCLUSION
VoIP is one of many higher-level communications capabilities among devices connected to the Internet. VoIP is not an application.
VoIP is a capability that is part of many applications.
VoIP capabilities are already pervasive.
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11
