Alcatel-Lucent 9500 MXC User Manual page 884

G.826
Recommendation G.826: Error performance parameters and objectives for international, constant bit rate digital
paths at or above the primary rate
Ga AsFET
Gallium Arsenide Field Effect Transistor
Gain
The increase in signal power caused by a device or network (for example, the signal gain provided by an
antenna).
GB
Giga bytes
GHz
Gigahertz
Golden Cells
These are sites where it is imperative that communications traffic continue at peak performance.
For example, a mobile backhaul network located close to international sporting events such as the Olympics or
sites where communications down can mean loss of revenue, such as share markets, or sites where there is a
contractual obligation that includes performance metrics.
GSM
Global Systems for Mobile
GUI
Graphical User Interface
H.323
A standard approved by the ITU that defines how audiovisual conferencing data is transmitted across networks.
In theory, H.323 should enable users to participate in the same conference even though they are using different
videoconferencing applications.
HDB3
High Density Bipolar Order 3
The factory default method of encoding transmissions for E1 and E3 radios. Substitutes a 1 for every 3 zeros.
High Density Bipolar Order 3 (HDB3)
The factory default method of encoding transmissions for E1 and E3 radios. Substitutes a 1 for every 3 zeros.
Hitless Receive Switching
A protected system configuration whereby a fault occurs in the receiving end of the link, the traffic is switched
to the standby radio without causing errors.
Hot Standby
ot Standby is a protected configuration. The system configuration of a radio in which two sets of
H
circuitry are arranged in tandem, with one in back-up mode in case of a failure occurs in the
operational circuitry. A microprocessor monitors the on-line circuitry and switches to the back-up
circuitry if a failure is detected. Having the back-up powered-up means it is ready for immediate
operational service.
10 Alcatel-Lucent