Quick Eagle Networks DL3800E - Manual (Page 147)

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Glossary G
A
ABAM
A designation for 22-gauge, 110-ohm, plastic-insulated, twisted-pair Western
Electric cable normally used in central offices.
AIS (Alarm Indication Signal)
An unframed sequence of All Ones normally sent by a DSU/CSU that cannot
maintain the required pulse density in AMI mode or sent by a CSU that has a
loss of signal condition on its data port. The signal is sent to maintain
continuity of transmission and to notify the far-end that a transmission fault
exists on the line. Same as Blue Alarm.
alternate loop code
Used to invert loop codes from U.S. standard code; inverts zeros to ones and
ones to zeros.
AMI (Alternate Mark Inversion)
A line code in which the signal carrying the binary value alternates between
positive and negative polarities.
ANSI (American National Standards Institute)
Coordinates the development of U.S. voluntary national standards in both the
private and public sectors. Standards pertain to programming languages, EDI,
telecommunications and physical properties of diskettes, cartridges and
magnetic tapes.
ASCII (American National Standard Code)
The standard and predominant seven-bit (eight bits with parity) character code
used for data communications and data processing.
asynchronous transmission
Transmission not related to a specific frequency, or to the timing of the
transmission facility.
attenuation
Reduction or loss of signal strength, measured in decibels; opposite of gain.