SWAN Concentrator and WAN Subsystem Troubleshooting Guide

SWAN Concentrator and WAN Subsystem Troubleshooting Guide—426992-008
Glossary-1
Glossary
10Base-T. Common name for an Ethernet connection running over a twisted-pair cable at
10 megabits/second (Mbps).
100Base-T. Common name for an Ethernet connection running over a twisted-pair cable at
100 megabits/second (Mbps).
$ZNET. The SCP process. See also Subsystem Control Point (SCP).
$ZZWAN. See WAN manager process.
10Base-T. Common name for Ethernet running over twisted-pair cable at 10 Megabits per
second (Mbps).
access method. A generic term referring to the input/output process (IOP) for a particular
data communications subsystem that provides application access to a communications
line. See also Input/Output Adapter Module (IOAM).
ADAPTER object. A configurable object within the WAN subsystem SCF interface that
represents a SWAN concentrator.
alternate path. See path.
AM3270 subsystem. Enables application programs to configure 3270-compatible devices
connected to communication lines on the SWAN concentrator.
application program interface (API). An API defines the set of procedures and message
formats for use by an application program. There is sometimes also an API protocol
that defines the order for procedure calls and messages.
asynchronous. A mode of data communications transmission in which characters are sent
at random; there is no timing relationship between the end of one character and the
start of the next. Within each character there is a fixed-bit duration that is determined
by the internal clock speeds of both the transmitting and receiving terminals. A
character code defines terminal and line control sequences.
ATP6100 subsystem. ATP6100 provides the means for an application program to use
asynchronous point-to-point terminals, printers, and other devices connected through
the SWAN concentrator.
b. Bit (Kbps = Kilobits per second).
B. Byte (KBps = Kilobytes per second).
bit-synchronous. A type of OSI Layer-2 protocol that uses synchronous transmission but
that does not require a character code to define terminal and line control sequences.
An example of a bit-synchronous protocol is X.25. See also Open Systems
Interconnection (OSI).