Glossary - IBM 3745 Series Connection And Integration Manual

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Glossary
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This glossary defines new terms used in this
manual. It also includes terms and definitions
from the IBM Dictionary of Computing,
SC20-1699.
Advanced Communication Function (ACF). A
group of IBM licensed programs. principally VTAM
programs. TCAM, NCP, and SSP, that use the
concepts of Systems Network Architecture (SNA),
including distribution of function and resource
sharing.
advanced peer-to-peer networking (APPN).
An extension of SNA featuring: (a) greater
distributed network control that avoids critical
hierarchical dependencies, thereby isolating the
effects of single point failure; (b) dynamic
exchange of network topology information to foster
ease of connection reconfiguration, and adaptive
route selection; (c) dynamic definition of network
resources; and (d) automated resource registration
and directory lookup. APPN extends the LU 6.2
peer orientation for end-user services to network
control and supports multiple LU types, including
LU 2, LU 3, and LU 6.2.
asynchronous transmission. Data transmission
in which transmission of a character or a block of
characters can begin at any time but in which the
bits that represent the character or block have
equal time duration. Contrast with synchronous
transmission.
binary synchronous transmission (eSC). A
form of telecommunication line control that uses a
standard set of transmission control character
sequences, for binary synchronous transmission of
binary-coded data between stations. Contrast with
SOLC.
boundary network node (BNN). (1) In SNA,
deprecated term for boundary node (8N). (2) In
NCP, deprecated term for peripheral node.
central control unit (CCU). In the 3745, the
controller hardware unit that contains the circuits
and data flow paths needed to execute
instructions and to control its storage and the
attached adapters.
© Copyright IBM Corp. 1988, 1997
channel adapter (CA). A communication
controller hardware unit used to attached the
controller to a System/370* data channel.
communication controller. A device that directs
the transmission of data over the data links of a
network; its operation may be controlled by a
program executed in a processor to which the
controller is connected or it may be controlled by a
program executed within the device. Examples
are the IBM 3705, IBM 3725/3726, IBM 3720, and
IBM 3745 models 130,150,170,210,310,410,
and 610.
configuration data file (CDF). A 3745 MOSS
file that contains a description of all the hardware
features (presence, type, address, and
characteristics).
configuration data file - extended (CDF-E). A
MOSS-E file that contains a description of all the
hardware features (presence, type, address, and
characteristics) .
control panel. A panel that contains switches
and indicators for the customer's operator and
service personnel.
control program. A computer program designed
to schedule and to supervise the execution of
programs of the controller.
control subsystem. The part of the controller
that stores and executes the control program, and
monitors the data transfers over the channel and
transmission interfaces.
customer engineer. See IBM service
representative
data circuit-terminating equipment (DCE). The
equipment installed at the user's premises that
provides all the functions required to establish,
maintain, and terminate a connection, and the
signal conversion between the data terminal
equipment (DTE) and the line. For example, a
modem is a DCE.
Note: The DCE may be a stand-alone equipment
or integrated in the 3745.
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