Alcatel-Lucent 1643 AMS Operation Manual page 360

Glossary
ITU-R
International Telecommunications Union - Radio standardization sector. Formerly known
as CCIR: Comité Consultatif International Radio; International Radio Consultative
Committee.
ITU-T
International Telecommunications Union - Telecommunication standardization sector.
Formerly known as CCITT: Comité Consultatif International Télégraphique &
Téléphonique; International Telegraph and Telephone Consultative Committee.
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J Jitter
Short term variations of amplitude and frequency components of a digital signal from
their ideal position in time.
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L LAN
Local Area Network
LAP-S (Link Access Procedure SDH)
A mechanism for the encapsulation of Ethernet MAC frames acc. to the ITU-T Rec.
X.85/X.86.
LAPD (Link Access Procedure in the D channel)
Protocol used on the data link layer (OSI layer two) according to the ITU-T Rec. Q.921.
LBA
Lightwave Booster Amplifier.
LBO
Line Build Out - An optical attenuator that guarantees the proper signal level and shape
at the receiver input.
LCAS
→
"Link Capacity Adjustment Scheme" (p. GL-15)
LCN
Local Communications Network
LDI
Linear Drop/Insert (Add-Drop)
LED
Light Emitting Diode
LEN
Local Exchange Node
LF
Low Frequency
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GL-14 Alcatel-Lucent - Proprietary
See notice on first page
365-312-803R7.2
Issue 4, May 2007