What is Internet Telephony?

Answer 1

Internet Telephony or VoIP (Voice over Internet Protocol) is a technology that enables making telephone calls using the underlying Internet infrastructure.

The main difference between normal telephone system and VoIP is that, unlike the normal telephone system, in VoIP,the voice is recorded,digitised (sometimes even encrypted, for security reasons) and converted into data at the speaker's end. This data is divided into small framagments called data packets and then these data packets are sent through the internet to the listener's end where the data packets are reassembled, decrypted and converted back into original voice.

Now since in VoIP, the data packets don't necessarily follow a dedicated path between the parties making the call, sometimes there can be a considerable delay between the receipt of the current data packet and the next one, this may cause some problems like awkward pauses b/w two words or sentences, and "unintelligible chopped words or phrases" during the conversation, but these things depend on many parameters such as quality & speed of the internet connection at both ends, traffic load and congestions anywhere in the network, etc.

Answer 2

"Internet telephony is the use of the Internet rather than the traditional telephone company infrastructure and rate structure to exchange spoken or other telephone information."

Also may be known as VOIP (Voice Over IP):

http://en.wikipedia.org/wiki/Voice_over_IP

Answer 3

Basically internet telephony is a way of calling one pc to another pc.Its the same as telephones but here you call up another pc instead of a telephone.

Answer 4

VoIP is telephone service over the public Internet through providers like Sun Rocket and Vonage. Cheap but riddled with latency issues.

Digital Voice is telephone service over the private network of Internet providers like Comcast that bypass the latency issues and have quality rivaling analog providers like Verizon and Sprint. A little more expensive but well worth it.

Answer 5

Voip or voice over Internet protocol is sending your voice online to someone else...

download skype
http://www.skype.com

Answer 6

Making phone calls over the internet instead of over traditional phone lines.

They are packet switched calls instead of circuit switched.

Answer 7

Read here and you'll understand.

http://en.wikipedia.org/wiki/Voice_over_IP