Experienced VoIP engineers develop programs that convert speech and audible sounds into digital signals called codecs. These codecs condense audio into data packets and send these packets through an IP network to translate the packets back into sound at the other end of the connection.

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VoIP endpoints use international telecommunication union (ITU) standard codecs viz. G.711 (standard for transmitting uncompressed packets) or G.729 (for compressed packets). ITU-T.38 is used for sending faxes over VoIP or an IP network in real time. Voice over Internet Protocol refers to the standards that facilitate voice-based phone calls using an internet connection instead of a local telephone company.

Voice over IP converts your voice into a digital signal, compresses it, and sends it over the internet. A VoIP service provider sets up the call between all participants. On the receiving end, the digital data is then uncompressed into the sound that you hear through your handset or speakerphone.

People opt for VoIP because they can make phone calls without any telephone service, which saves them on long-distance charges. If you have internet access, you don’t need to run any extra copper wires. This lets employees work from home or telecommute to the office as well.

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To call someone using VoIP, you need a SIP-compatible desk phone or a VoIP calling app, which means it is assigned an IP address so that calls can be made from your network. Unlike landline phones, they are capable of high-definition (HD) phone calls.

A VoIP phone system is a technology to make phone calls through your internet connection instead of a regular landline or a mobile network. A VoIP system converts analog voice signals into digital signals over your broadband connection. A VoIP server is used to connect calls to other telephone networks.

As long as you have a high-speed internet connection, which includes a router and modem, you are ready to use a VoIP.

A typical VoIP configuration involves a desk phone and a SIP server, which is typically a VoIP service provider. It works even better than your traditional landline phone because it offers many more features than what analog phone service could ever provide.