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V.35 The most common network interface standard approved by the International Telecommunications Union (ITU). The V.35 standard provides direct interoperability between digital voice and data lines on the Public Switched Telephone Network (PSTN) and an onsite digital voice and data network.
VOX This is a symbol for voice-activated operation. On 2-way radios, a VOX setting eliminates the need to press a push-to-talk button in order to transmit. Similarly, on digital or tape recorders, the VOX setting activates the recorder whenever sound above a certain threshold is sensed.
VPN (Virtual Private Network) - A private, secure network that uses public infrastructure to connect users over a wide area. A VPN remains secure through a combination of encryption, authorizations, and other security measures.
Videoconferencing A subset of teleconferencing that includes a video element. Videoconferencing has transitioned from relatively crude frame-by-frame video to fluid, real-time transmission. The more realistic videoconferencing systems require T1, DSL, cable, or another high-speed, large-bandwidth medium.
VoIP (Voice over Internet Protocol) - A software/hardware combination that uses the packet-switching methods of the internet and other digital data communications to establish voice communications. Because the call is carried on the internet, VoIP does not incur long-distance toll charges.
Voice Mail A service provided by the telephone company that records and saves messages left by your callers when you do not answer.
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