Asynchronous Serial Communications Programmer's Reference Manual (32022-90052)

326 Glossary
Glossary
shared-line access The feature
that allows two or more HP 3000
Series 900 hosts to use the same
DTC/X.25 Network Access card
on a DTC to access an X.25
network.
SIC Serial Interface Card. A card
installed in the front of the DTC
that acts as an interface between
a corresponding Connector Card
(CC) and the DTC’s processor.
slaved device A device that
shares the same DTC port as
another device and is connected,
to the other device, referred to as
its master, by a cable. The actions
of the slaved device are controlled
by the master device.
SNMP Simple Network
Management Protocol. An
industry standard, for managing
networked computers in a
multi-vendor environment.
SNP Synchronous Network
Processor card; an alternative
name for an X.25 board.
spooled device A printer that is
accessed through the MPE/iX
spooling facility. The spooling
facility allows a nonsharable
device to be shared among several
users by temporarily storing
output data on disk and
managing the selection of output
spool files destined for the spooled
device.
start bit A data bit usedtosignal
the start of a character being
transmitted in an asynchronous
communication mode.
station address A link level
address used by the IEEE 802.3
protocol that is assigned to every
node on an IEEE 802.3 network.
stop bit A data bit used to signal
the end of a character being
transmitted in an asynchronous
communication mode.
store-and-forward A technique
in which messages are passed
from one node to another in a
network to reach their
destination. Point-to-point
networks use the
store-and-forward technique to
transmit messages.
subnet Another name for a
network, especially if the network
is part of an internetwork. The
word subnet is also a synonym for
intranet.
SVC Switched Virtual Circuit.
The path through an X.25
network that is established at call
set-up time.
switching See DTC switching.
Switching User Interface The
user interface available when
DTC switching is enabled that
allows terminal users to choose
the MPE/iX computer with which
they want to establish a
communication link.