IP
See “Internet protocol” (p. GL-13) for definition.
IPsec (Internet Protocol Security)
See “Internet protocol security” (p. GL-13) for definition.
ISO
See “International Standards Organization” (p. GL-13) for definition.
ISP
See “Internet service provider” (p. GL-13) for definition.
ITU
See “International Telecommunications Union” (p. GL-13) for definition
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J jacket
The outer, protective covering of the cable.
jitter
Small and rapid variations in the timing of a waveform due to noise, changes in component
characteristics, supply voltages, or imperfect synchronizing circuits.
jumper
A short fiber optic cable with connectors on both ends.
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L lambda (λ)
The eleventh letter in the Greek alphabet. In optical fiber networking, the term lambda refers to an
individual optical wavelength. See “wavelength” (p. GL-32) for related term.
laser bias current (LBC)
Current that runs through the laser to make it work. LBC is monitored by performance
monitoring. If the current goes beyond a certain threshold, the circuit pack must be replaced.
LBC
See “laser bias current” (p. GL-14) for definition.
LBO
See “line build out” (p. GL-15) for definition.
LC
See “Lucent connector” (p. GL-15) for definition.
LD
See “line driver” (p. GL-15) for definition.
Glossary
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GL-14
1830 PSS-36/PSS–32/PSS-16/PSS-4
8DG60888CAAA Release 3.6.0 and 3.6.1
Issue 1 June 2011