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Glossary
This glossary contains terms and abbreviations that are
used in this manual.
It
includes terms and definitions
from IBM Vocabulary for Data Processing,
Telecommunications, and Office Systems, GC20-1699.
Symbols used in this glossary are as follows:
• An asterisk (*) identifies definitions from the
American National Dictionary for Information
Processing, published by the Computer and Business
Equipment Manufacturers Association.
• The symbol (CCITI/ITU) identifies definitions from
the CCITT Sixth Plenary Assembly Orange Book,
Terms and Definitions and working documents
published by the International Telecommunication
Union, Geneva, 1978.
• The symbol (ISO) identifies definitions from
published sections of the ISO Vocabulary of Data
Processing, developed by the International
Standards Organization, Technical Committee 97
Subcommittee 1.
'
• The symbol (TC97) identifies definitions from drafts
and working papers under development by the
International Standards Organization, Technical
Committee 97, Subcommittee 1.
Advanced Communications Function for the Network
Control Program (ACF/NCP). An IBM program
product that provides communication controller support
for single-domain and multiple-domain networks.
alert. In NetView or NPDA, a notification about a
.. high priority event that warrants immediate attention.
This data-base record is generated for certain event
types that are defined by user-constructed filters.
ANSI X3.64. American National Standard Additional
Controls for use with American National Standard Code
for Information Interchange (ASCII). A standard that
defines a set of control functions that augments ASCII
control functions as described in ANSI X3.4 and that
controls input and output for two-dimensional
character-imaging devices, such as displays or printers.
ASCII.
*
American National Standard Code for
Information Interchange. A standard code, using a
coded character set consisting of 7-bit coded characters
(8 bits including parity check), used for information
interchange among data processing systems, data
communication systems, and associated equipment. The
ASCII set consists of control characters and graphic
characters.
ASCII pass-through. For the 3708, the trarismission of
unmodified data between an ASCII device and an
ASCII host (NCP).
ASCII pass-through mode. For an ASCII device
attached to a 3708, a mode of operation in which the
device communicates with an ASCII host (NCP).
asynchronous. Without regular time relationship;
unexpected or unpredictable with respect to the
execution of a program's instructions.
configuration. (l) (TC97) The arrangement of a
computer system or network as defined by the nature,
number, and the chief characteristics of its functional
units. More specifically, the term configuration may
refer to a hardware configuration or a software
configuration. (2) The devices and programs that make
up a system, subsystem, or network.
control terminal. For the 3708, a display attached to a
3708 that enables an operator to communicate with the
3708 to control and monitor the 3708 and to define the
3708 configuration.
control terminal mode. For an ASCII device attached
to a 3708, a mode of operation in which the device
functions as the control terminal for the 3708.
data Hnk. (1)
*
The physical means of connecting one
location to another for the purpose of transmitting and
receiving data. (2) (TC97) The assembly of parts of two
data terminal equipments (DTEs) that are controlled by
a link protocol, and that, together with the
interconnecting data circuit, enable data to be
transferred from a data source to a data sink. (3) The
interconnecting data circuit between two or more
equipments operating in accordance with a link
protocol; it does not include the data source and the
data sink. (4) In SNA, synonym for link(3).
data link escape character (DLE). (ISO) A transmission
control character that changes the meaning of a limited
number of contiguously following characters or coded
representations and that is used exclusively to provide
supplementary transmission control characters.
data stream. (1) All data transmitted through a data
channel in a single read or write operation. (2) A
continuous stream of data elements being transmitted,
or intended for transmission, in character or binary-digit
form, using a defined format.
DCE. Data circuit-terminating equipment.
decode. (1) (ISO) To convert data by reversing the
effect of some previous encoding. (2) To interpret a
code. (3) Contrast with encode.
display. (1)
*
(ISO) A visual presentation of data. (2)
(TC97) In word processing, a device for visual
Glossary
X-5
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