Telecommunications terms starting with V

130 terms

  1. voice band Synonym voice frequency.
  2. voice coder See vocoder.
  3. voice frame A UIH (unnumbered information with header check) frame that contains a voice packet in its information field. [T1.312-1991]
  4. voice frequency (VF) Pertaining to those frequencies within that part of the audio range that is used for the transmission of speech.
  5. voice frequency (VF) primary patch bay A patching facility that provides the first appearance of local-user VF circuits in the technical control facility (TCF).
  6. voice frequency carrier telegraph (VFCT) Synonym voice-frequency telegraph.
  7. voice grade In the public regulated telecommunications services, a service grade that is described in part 68, Title 47 of the Code of Federal Regulations [CFR].
  8. voice information field The field within a voice packet that contains blocks arranged according to the significance of the bits: the first block contains the most significant…
  9. voice operated relay circuit Synonym vox.
  10. voice operated transmit Synonym vox.
  11. voice-data signal See quasi-analog signal.
  12. voice-frequency (VF) channel A channel capable of carrying analog and quasi-analog signals.
  13. voice-frequency telegraph (VFTG) A method of multiplexing one or more dc telegraph channels onto a nominal 4-kHz voice frequency channel. Synonym voice frequency carrier telegraph.
  14. voice-operated device anti-sing See vodas.
  15. voice-operated gain-adjusting device See vogad.
  16. voice-plus circuit Synonym composited circuit.
  17. volatile storage A storage device in which the contents are lost when power is removed.
  18. Volatility The term volatility indicates how much and how quickly the value of an investment, market, or market sector changes.
  19. Volt-amperes reactive (VARS) The unit of measure for reactive power.
  20. voltage rating The highest voltage that can be applied to a wire or conductor in conformance with standards.
  21. voltage standing wave ratio (VSWR) In a transmission line, the ratio of maximum to minimum voltage in a standing wave pattern.
  22. Volume Volume is the number of shares traded in a company's stock or in an entire market over a specified period, typically a day.
  23. volume unit (vu) A unit of measurement of the power of an audio-frequency signal, as measured by a vu meter.
  24. VOX Voice Actuation.
  25. VSB Visible Satellite Imagery
  26. VSWR Abbreviation for voltage standing wave ratio.
  27. vu Abbreviation for volume unit.
  28. Vulnerability Weakness in an information system, system security procedures, internal controls, or implementation that could be exploited or triggered by a threat…
  29. Vulnerability Assessment Formal description and evaluation of the vulnerabilities in an information system.
  30. VW-1 Flammability rating established by Underwriters Laboratories for wires and cables that pass a specially designed vertical flame test formerly designated…