Telecommunications terms starting with Z

23 terms

  1. Z Zulu time; the same as Universal Coordinated Time (UTC), i.e. 18z is the same as 18:00 UTC.
  2. Z Time Abbreviation for Zulu Time. See Coordinated Universal Time.
  3. ZBTSI (zero-byte time slot interchange) A technique applied to a DS1 frame to ensure pulse density requirements are met, where bits 2 through 193 of each frame are scrambled to minimize the…
  4. zero dBm transmission level point (0 dBm TLP) In a communication system, a point at which the reference level is 1 mW, i.e., 0 dBm.
  5. zero dispersion window Synonym minimum-dispersion window.
  6. zero insertion See zero-bit insertion.
  7. zero stuffing See zero-bit insertion.
  8. zero suppression The elimination of nonsignificant zeros from a numeral.
  9. zero transmission level point (0TLP) Synonym zero dBm transmission level point.
  10. zero-bit insertion : A bit-stuffing technique used with bit-oriented protocols to ensure that six consecutive "1" bits never appear between the two flags that define the…
  11. zero-dispersion slope In a single-mode optical fiber, the rate of change of dispersion, with respect to wavelength, at the fiber's zero-dispersion wavelength.
  12. zero-dispersion wavelength In a single-mode optical fiber, the wavelength or wavelengths at which material dispersion and waveguide dispersion cancel one another.
  13. zero-level decoder A decoder that yields an analog level of 0 dBm at its output when the input is the digital milliwatt signal. [47CFR] Note: The signal is a 1-kHz sine wave.
  14. zerofill To fill unused storage locations in an information system (IS) with the representation of the character denoting "0". [INFOSEC-99]
  15. zeroize To remove or eliminate the key from a crypto-equipment or fill device. [INFOSEC-99]
  16. zeroized Electronically stored data that have been degaussed, erased, or overwritten. [After X9.17]
  17. zip-cord In optical communications, a two-fiber cable consisting essentially of two single-fiber cables having their jackets conjoined by a strip of jacket…
  18. Zone A geographical area shown on a Flood Hazard Boundary Map or a Flood Insurance Rate Map that reflects the severity or type of flooding in the area.
  19. zone of influence The area surrounding a power station that is raised in potential above a remote or true grounding (earthing) point. [T1.318-2000]
  20. zone of protection The space, adjacent to a lightning protection system, that is substantially immune to direct lightning strokes. [After T1.318-2000]
  21. zone of silence Synonym skip zone.
  22. zooming The act of changing the scale of a display, generally without changing the amount of screen space it occupies. [T1.232-1996]
  23. Zulu Time (Z) Means Coordinated Universal Time (UTC); the international time standard kept at Greenwich, England.