Voice Over Internet Protocol also known as IP telephony is an acronym for VoIP. VoIP technology is implemented to transmit voice and multimedia communications over IP i.e. internet protocol networks. To be more precise, Voice Over IP enables the conversion of voice signal to a digital signal thereby allowing you to call directly from your PC, or a VoIP phone, and similar data-driven machines. The other names for VoIP technology are IP telephony, broadband phone service, and broadband telephony service. VoIP uses a single unified communication system to unite the latest communication technologies like smartphones, video conferencing, email, cellphones, presence detection, etc. VoIP technology is popular among many software development businesses in today’s world because of its flexible, portable, and affordable nature.
How Does VoIP Works?
VoIP utilizes codecs to encapsulate or compress the audio into data packets. A codec is a chip of software or hardware inbuilt into the modem whose main function is to convert voice into data.
The data packets are then transmitted across an Internet Protocol (IP) network after which they are again uncompressed back into the audio signal at the other end of the connection. VoIP technology reduces the network infrastructure costs by eliminating the application of circuit-switched networks for voice. The providers can thus deliver voice services over their broadband networks along with enabling the enterprises to control a single voice and data network.
Advantages of VoIP Technology
- Affordable International Calls
VoIP technology enables a cheap international calling service, unlike traditional phone services that were charging huge prices. The digital signals transmitted via broadband cut down rental charges that are typically connected with long-distance PSTN telephone calls.
- Mobility in the Workplace
Since VoIP Software is mobile, there is mobility in the workplace at a higher rate. It has also removed the limitations of desk phones in the workplace. In addition, since internet protocol technologies are easily accessible via any mobiles, laptops, computers, or any internet-connected device, remote work is possible for many employees.
VoIP Standards and Protocols
The endpoints of VoIP use standard codecs of ITU (International Telecommunication Union). The standard codec for the transmission of uncompressed packets is G.711 while for compressed packets the standard is G.729. Though compression minimizes bandwidth requirements, it may affect the voice quality. VoIP uses the ITU T.38 protocol to support non-voice communications in order to send faxes over an IP network. Once the voice is compressed onto IP, it is transmitted with RTP i.e. Real-Time Protocol.