IBM 3708 End-User Reference page 137

presentation of information on any temporary
character-imaging device. (3) (TC97) To present data
visually.
DTE. Data terminal equipment.
duplex.
*
In data communication, pertaining to a
simultaneous two-way independent transmission.
Synonymous with full duplex.
EBCDIC.
*
Extended binary-coded decimal
interchange code. A coded character set consisting of
8-bit coded characters.
EEPROM.
*
Electrically erasable programmable
read-only memory located in the base unit of the 3708.
EPROM.
*
Erasable programmable read-only memory
located in the cartridge of the 3708.
emulate. (1) To imitate one system with another,
primarily by hardware, so that the imitating system
accepts the same data, executes the same computer
programs, and achieves the same results as the imitated
computer system. (2) To use programming techniques
and special machine features to permit a computing
system to execute programs written for another system.
encode. (1)
*
(ISO) To convert data by the use of a
code or a coded character set in such a manner that
reconversion to the original form is possible. Encode is
sometimes loosely used when complete reconversion is
not possible. (2)
*
(ISO) Contrast with decode.
full duplex. See duplex.
half duplex. (1)
*
In data communication, pertaining to
an alternate, one way at a time, independent
transmission. (2)
*
Contrast with duplex.
host (NCP). (TC97) A processor that controls all or
part of a user application network.
keyboard mapping. For an ASCII device attached to
the 3708 in protocol conversion mode, a table that
defines which ASCII keyboard sequences are equivalent
to 3270 functions.
logical unit (LV). In SNA, a port through which an
end user accesses the SNA network to communicate
with another end user and through which the end user
accesses the functions provided by system services
control points (SSCPs).
Network Logical Data Manager (NLDM). An IBM
program product that collects and correlates LV-LU
session-related data and provides the user with online
access to the data.
It
runs as a Network
Communications Control Facility (NCCF)
communication network management application
program.
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IBM 3708 End-User Reference
Network Problem Determination Application (NetView or
NPDA). An IBM program product that helps the user
identify network problems from a central control point
using interactive display techniques.
Network Terminal Option (NTO). An IBM program
product that extends the capabilities of the ACF/NCP
to support a select group of non-SNA devices.
nonswitched line. A telecommunication line on which
connections do not have to be established by dialing.
Contrast with switched line.
pacing. (1) A technique by which a receiving station
controls the rate of transmission of a sending station to
prevent overrun. (2) In SNA, a technique by which a
receiving component controls the rate of transmission of
a sending component to prevent overrun or congestion.
physical unit (PD). In SNA, the component that
manages and monitors the resources (such as attached
links and adjacent link stations) of a node, as requested
by an SSCP through an SSCP-SSCP session.
platen. (TC97) The part of a document copying
machine, usually in the form of a glass plate that can be
curved, upon which the original is placed for copying.
A backing, usually cylindrical, against which printing
mechanisms strike or otherwise deposit ink to produce
an image.
point-to-point connection. A connection established
between two data stations for data transmission. The
connection may include switching facilities.
primary logical unit (PLV). In SNA, the logical unit
(LU) that contains the primary half-session for a
particular LU-LU session. Contrast with secondary
logical unit.
printer authorization matrix. A matrix stored in the
3274 control unit that establishes printer assignment and
classification.
program attention key. On a display device keyboard, a
key that produces an interruption to solicit program
action.
program function key. (1) (TC97) On a typewriter, a
control by which a specified machine function is set,
released, or performed. (2) (TC97) In computer
graphics, a button or switch that may be operated to
send a signal to the computer program controlling the
display. (3) On a terminal, a key, such as an
ATTENTION or ENTER key, that causes the
transmission of a signal not associated with a printable
or displayable character. Detection of the signal usually
causes the system to perform some predefined function
for the operator.
protocol: (1) (XITT/ITU) A specification for
the .
format and relative timing of information exchanged .