Voice over IP
What is VoIP?
Voice over IP or VoIP is a technology that permits the transmission of voice over the Internet in data packets using an Internet Protocol (IP). The voice signal is sent digitally in packets instead of being sent (by digital or analogue means) via circuits used only for telephony such as the conventional telephone companies’ Public Switched Telephone Network.
The protocols used to carry the voice signals over the IP network are commonly referred to as Voice over IP or IP. VoIP traffic can travel via any IP network, whether Internet or Local Area Network (LAN).
The difference between VoIP and IP telephony
It is important to differentiate between Voice over IP (VoIP) and IP telephony. VoIP refers to rules, devices and protocols; in short, it is the technology that permits the transmission of voice over the IP. IP telephony or Voice IP telephony refers to all the new functionalities in telephony that use this new technology to make IP calls via an IP telephone, for example.
Cheaper than conventional telephony
The prices of VoIP calls are lower thanks to the data networks as they are now widespread and enable the free transmission of data, with no kB size limitation.
An example to help it be better understood is what happens when you access an address such as . At that very moment data is being sent to and received from a server, but how much does this cost? Well, almost nothing. Each user pays their monthly Internet charge, having the right to download and upload all the information they want.
Services and characteristics offered