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Information Technology
Gartner Glossary
Consumer Voice Services
Voice service revenue and connections are made up of the sum of PSTN and voice over Internet Protocol (VoIP) connections and their associated revenue. For clarification, IP-based voice “virtual” connections (VoIP) are those calls delivered over a broadband Internet connection or other IP network. A VoIP virtual line needs to be associated with a telephone number and be identifiable to the consumer as a VoIP-grade service. A VoIP line and PSTN line are not mutually exclusive — indeed, most consumers with VoIP lines still have a PSTN line.
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