This means that instead of being sent all the time both ways, as over a traditional wire landline, the data is just sent when needed. Unlike the analog telephone service, VoIP also uses so-called 'packet switching' for data. Via the telephone system provider, this digital signal is sent over the internet and received by the person you’re calling. Briefly, a VoIP system uses a digital signal instead of an analog audio signal. The technology behind a virtual phone service (also called VoIP for ‘Voice over IP’) is centered around the digital capabilities brought along with the internet.
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