Voice over Internet Protocol (VoIP) is trendy and is set to become the new standard of telephony by 2022. Since communication is crucial to make a business successful and proper, it may account for the popularity of VoIP calls. People find the technology more convenient in comparison to the other forms of telecommunication given that it allows sending more than one phone call across the same web-based network.
What is VoIP?
Voice over Internet Protocol (VoIP), also called IP telephony, is a method and group of technologies that deliver voice communication and multimedia sessions over Internet Protocol (IP) networks, such as the Internet. The terms Internet telephony, broadband telephony, and broadband phone service specifically refer providing communication services such as voice, fax, SMS and voice-messaging over the public Internet, rather than via the public switched telephone network (PSTN), also known as plain old telephone service (POTS). Simply speaking, it is voice communication via the Internet.
How does VoIP work?
Rather than using the conventional phone network, VoIP telephones connect to broadband via a digital subscriber line (DSL) router or VoIP-enabled cable modem. A Session Initiation Protocol (SIP) is needed to establish a connection. The SIP manages the communication connections between two or more participants. Structured in a similar way to an email address, every VoIP user has their own SIP address allowing online identification and enabling phone calls from any SIP-enabled end-device.
The process can be categorised into three broad steps, including: voice is converted into digital audio signals; data is encrypted and transmitted via the Internet in data packets; and, data is decrypted and converted back into voice as it arrives at the target destination. Consequently, acoustic signals that are recorded by a microphone are first converted into electrical signals and then digitised and divided into small packages. The method of encoding is called Codec, and is crucial for transmitting the data packet since it determines the voice quality.