Thus, the bandwidth requirement for voice on an IP network is 1/16th that of the PSTN's dedicated, digital circuits. Starting in the mid-1990s, advertiser-supported, free telephone service from PC ...

"Telecommunication services using IP telephony are not being banned and will continue to be provided. A telephone communication service license is required for this. For most legitimate operators, ...

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VoIP and IP telephony allows PC users to make phone calls over the Internet or other packet networks via gateways and standard telephones. VoIP is an abbreviation for voice over Internet protocol.