NEC 2400 Integration Manual page 151

Glossary
H
hard disk drive
A high-capacity data storage/retrieval device that is located inside a computer platform. A hard
disk drive stores data on non-removable high-density magnetic media based on a predetermined
format for retrieval by the system at a later date.
hardware
The physical components of a computer system. The central processing unit, disks, tape and
floppy drives are all hardware.
header
Information that the system creates to identify a message. A message header includes the origi-
nator or recipient, type of message, creation time, and delivery time.
help
A command run by pressing
options available at your current screen position. In the INTUITY AUDIX system, press
the telephone keypad to get a list of options. See also on-line help .
hertz (Hz)
A measurement of frequency in cycles per second. A hertz is one cycle per second.
host switch
The switch directly connected to the INTUITY system over the data link. Also, the physical link
connecting an INTUITY system to a distributed communications system (DCS) network.
hunt group
A group of analog ports on a switch usually administered to search for available ports in a circular
pattern.
Hz
See hertz .
I
IDI
See isolating data interface .
INADS
See initialization and administration system .
information service
See bulletin board .
initialization
The process of bringing a system to a predetermined operational state. The start-up procedure
tests hardware; loads the boot filesystem programs; locates, mounts, and opens other required
filesystems; and starts normal service.
initialization and administration system (INADS)
A computer-aided maintenance system used by remote technicians to track alarms.
or on an INTUITY display terminal to show the
HELP CTRL ?
Issue 2 December 1995
on
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GL-11