Glossary
Issue 3 June 2000
GL-9
G
GCNS-2000
Lucent's Gigabit Cell Network Switch
GNE
Gateway Network Element — A network element that has an active X.25 link. Can also be a DSNE.
GR
Telcordia Technologies General Requirement
Group
The eight slots that may be equipped.
GTP
General Telemetry Processor
GUI
Graphical User Interface
H
Hairpin Routing
A cross-connection between Function Units; for example, Function Unit C to Function Units A or B.
Cross-connections go through Main, but no bandwidth or time slots are taken from the backbone
ring. Eliminates need for another shelf.
HDSL
High Data Rate Digital Subscriber Line
HECI
Humans Equipment Catalog Item
Holdover
An operating condition of a network element in which its local oscillator is not locked to any
synchronization reference but is using storage techniques to maintain its accuracy with respect to
the last known frequency comparison with a synchronization reference.
I
IC
Internal Clock — Used in synchronization messaging.
ID
Identifier — See Shelf ID and Site ID.
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