VoIP
Recently in the very sad event of Mumbai blast, there was a lot of buzz about VoIP technology being used by the terrirost to keep connected with there masterminds somewhere in PAK. A very sad event of seeing such a misuse of technology.
So What is VoIP: VoIP stands for Voice over Internet Protocol, which is phone sevice that uses broadband Internet connectivity to dial. Some VoIP services may only allow you to call other people using the same service, but others may allow you to call anyone who has a telephone number - including local, long distance, mobile, and international numbers. Also, while some VoIP services only work over your computer or a special VoIP phone, other services allow you to use a traditional phone connected to a VoIP adapter.
How it works: According to wikipedia, VoIP systems employ session control protocols to control the set-up and tear-down of calls as well as audio codecs which encode speech allowing transmission over an IP network as digital audio via an audio stream. To put in simpler manner, VoIP services convert your voice into a digital signal that travels over the Internet. If you are calling a regular phone number, the signal is converted to a regular telephone signal before it reaches the destination. 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.
What you need: A broadband (high speed Internet) connection is required. This can be through a cable modem, or high speed services such as DSL or a local area network. A computer, adaptor, or specialized phone is required. Some VoIP services only work over your computer (with its software a a microphone) or a special VoIP phone (that plug directly into your broadband connection and operate largely like a traditional telephone), while other services allow you to use a traditional phone connected to a VoIP adapter.
So What is VoIP: VoIP stands for Voice over Internet Protocol, which is phone sevice that uses broadband Internet connectivity to dial. Some VoIP services may only allow you to call other people using the same service, but others may allow you to call anyone who has a telephone number - including local, long distance, mobile, and international numbers. Also, while some VoIP services only work over your computer or a special VoIP phone, other services allow you to use a traditional phone connected to a VoIP adapter.
How it works: According to wikipedia, VoIP systems employ session control protocols to control the set-up and tear-down of calls as well as audio codecs which encode speech allowing transmission over an IP network as digital audio via an audio stream. To put in simpler manner, VoIP services convert your voice into a digital signal that travels over the Internet. If you are calling a regular phone number, the signal is converted to a regular telephone signal before it reaches the destination. 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.
What you need: A broadband (high speed Internet) connection is required. This can be through a cable modem, or high speed services such as DSL or a local area network. A computer, adaptor, or specialized phone is required. Some VoIP services only work over your computer (with its software a a microphone) or a special VoIP phone (that plug directly into your broadband connection and operate largely like a traditional telephone), while other services allow you to use a traditional phone connected to a VoIP adapter.
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