Troubleshooting Terminal, Printer and Serial Device Connections - Edition 4 (32022-90030)
138 Glossary
Glossary
desirable route for data to travel
from a given local node to a
remote node.
entry priority In a
point-to-point network, it is a
ranking that identifies the most
desirable route for data to travel
from a given local node to a
remote node.
environment A session that is
established on a remote node.
escape from data transfer
character A character that
allows a user who is connected to
a host system through the DTC,
to break that connection and
return to the DTC switching user
interface. The default is
[CTRL]-K. This character is used
only on networks managed by the
OpenView Windows Workstation.
escape sequence A sequence of
characters beginning with the
escape character and followed by
one or more other characters,
used to convey control directives
to printers, plotters, or terminals.
Ethernet A Local Area Network
system that uses baseband
transmission at 10 Mbps over
coaxial cable and unshielded
twisted pair. Ethernet is a
trademark of Xerox Corporation.
event log One of three circular
files stored on the OpenView
windows workstation. It contains
lists of events that are reported
by the DTCs for which it is
responsible.
F
facility An optional service
offered by a packet switching
network’s administration and
requested by the user either at
the time of subscription for
network access or at the time a
call is made. Also known as user
facility.
facility set A facility set defines
the various X.25 connection
parameters and X.25 facilities
that can be negotiated for each
virtual circuit on a per-call basis.
fast select An optional
packet-switching network facility
by which user data can be
transmitted as part of the control
packets that establish and clear a
virtual connection.
FCS Frame Check Sequence. A
sequence of bits generated by
X.25 at Level 2 that forms part of
the frame and guarantees the
integrity of its frame’s contents.
The FCS is also used by the
IEEE 802.3 protocol to check the
validity of frames.
file equation An assignment
statement used to associate a file
with a specific device or type of
device during execution of a
program.
file number A unique number
associated with a file when the
file is opened. The file number is
returned in the FOPEN or