July 2019
6-38
Xerox® B205/B215 Multifunction Printer Service Manual
Glossary of Terms
Initial Release
General Procedures / Information
Modem Modulator-Demodulator. A device that modulates an analog carrier
signal to encode digital information, and demodulates a carrier signal
to decode the transmitted information.
MR Modified Read. A compression method that encodes the first scanned
line (u
sing MH), then compares the next line to the first, determines
the differences, then encodes and transmits those differences.
OPC Organic Photo Conductor. A mechanism that creates a virtual image
f
or print using a laser beam emitted from a laser printer. Also referred
to as Photoreceptor Drum.
Originals The original is the first example of
a document, photograph, chart, or
any combination of these, used to produce others.
PAB X Private Automatic Branch Exchange. An automatic telephone switch-
ing system within a private enterprise.
PCL Printer Command Language. A page description language developed
t
o provide an efficient way to control printer features across various
printing devices.
Printer Driver A program used to send commands and transfer data from the com-
puter to the printer.
Print Media Material such as paper, envelopes, labels, and transparencies which
can be used i
n printers, scanners, fax machines, or copiers.
PPM Prints Per Minute. Used to measure printer speed. The number of
copies
or prints produced in one minute.
PRN file An interface for a device driver that allows software to interact with the
de
vice driver by using standard input/output system calls.
Protocol A convention or standard that cont
rols or enables the connection,
communication, and data transfer between two computing endpoints.
PSTN Public Switched Telephone Network. The aggregate of the world's cir-
cuit-switched telephone networks providing infrastructure and ser-
vices for public telecommunication.
Resolution The sharpness of an image, measured in Dots Per Inch (DPI).
SMTP Simple Mail Transfer Protocol. A t
ext-based protocol generally used
for sending messages from a mail client to a mail server.
TCP/IP Transmission Control Protocol (TCP) / Internet Protocol (IP). The suite
of
protocols for communication between computers, used as a stan-
dard for transmitting data over networks.
Toner Cartridge A bottle or container used in a xerographic copier/printer that contains
t
he powder used to form the text and images on the printed paper.
TWAIN An applications programming interface and communications protocol
t
hat regulates communications between software and digital imaging
devices.
USB Universal Serial Bus. A hardware interface that connects computers
and
peripherals. The USB is designed to concurrently connect a sin-
gle computer USB port to multiple peripherals.
Table 1 Glossary
T
erm/Acronym Definition
WEP Wired Equivalent Privacy. A protocol for wireless local area networks
that provides security by encrypting data over radio waves so that it is
protected as it is transmitted from one end point to another.
WPS The Wi-Fi Protected Setup. A standard for establishing a wireless
hom
e network, allowing easy wireless network connection without a
computer.
Table 1 Glossary
T
erm/Acronym Definition
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