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Glossary
This glossary contains terms and words you may encounter when
discussing or reading about fax machines and fax communication. Please
use these definitions for reference only. Of course, all information is
subject to change without notice.
A4, B4, A3
Standard stationery sizes defined by the International Standards
Organization, an agency of the United Nations. See also Paper sizes.
Autodialing
Enables users to store pre-programmed telephone numbers in the unit's
memory. Storage capability varies from unit to unit.
Automatic fallback
The ability of a fax machine, when communicating with another fax
which is communicating at a slower rate, to slow down ("fall back") to the
other unit's speed.
Automatic reduction
Many Pitney Bowes fax machines will automatically reduce documents
being transmitted to accommodate the effective printing width of the
receiving unit. This allows, for example, a fax machine with a 10˝
scanning width to send an image 10˝ wide to a unit with an 8.5˝ print
width; the receiving fax machine will receive a reduced-size printout of
the complete image.
Bit
The smallest unit of information in a computer. Contraction of the term
binary digit. Some Pitney Bowes fax machines, which are themselves
computers "dedicated" to telecommunications, allow users to change bits
of information to provide or cancel features through software settings.
Bits per second
See bps.
Black density
Also called black coverage. The amount of non-white area on a page. For
example, most regular office correspondence has a black density under
10%, due to the presence of margins, spaces between words, spaces
between lines and paragraphs and even spaces within letters (such as e
and o). However, drawings and photographs have a much higher black
density, sometimes approaching 100%. The higher a page's black density,
the more slowly a fax machine can send it.
bps
Bits per second. Used to express the speed of transmission of data.
Because fax transmission treats a document as a graphic image rather
than as a series of alphabetic and numeric characters, bps does not
correspond to the number of characters transmitted per second.
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