This is going to be an era dawning. It has already dawned to be clear. It is an era of VOIP (voice over IP). Internet telephony happens when people use voice to communicate over the Internet. A common example of Internet telephony is the use of instant messengers for voice chats.
The Voice Over IP.
Just like how instant messengers let us type out text messages to each other, they can let us send out voice messages, very similar to the way we do it on the phone.
But note that the instant messenger voice chat is happening between one PC and another. This kind of communication is called PC-to-PC Internet telephony.
Advantages of VoIP
VoIP & PC to Phone
Instant Messenger & VoIP
What is more complex and difficult to achieve is PC-to-phone Internet telephony. This involves using your PC to make a call to any regular phone number! It is difficult because when you make a call from a PC to a regular telephone, the company that operates the telephone connection has to pick up your voice from the Internet and carry it over the regular phone network. Then it has to carry its subscriber’s voice back to the PC caller in such a way that it can travel across the Internet.
Conventional telephones use circuit switching technology creating a direct link with the two sites participating in a communication. In VOIP, packet switching is used. Packet switching is a communications paradigm in which packets (messages or fragments of messages) are individually routed between nodes, with no previously established communication path. In fact packet switching is the basis for TCP/IP communication which is the basis for Internets working.
Skype the sensation!
Amongst the options available skype which is made by the kazaa sponsors deserves special mention. Skype’s programs lets you call Internet connected PCs free of charge and other phone for a charge. Currently millions of users are said to be using their both free and paid service.
Next : Advantages of VoIP
Quotable Quotes:
“Be brief. No talk can please when too long.
Get to your point and know when to stop.”