US Robotics 002605-00 Manual page 134

characters per second (CPS)
A data transfer rate generally estimated from
the bit rate and the character length. For
example, at 2400 bps, 8-bit characters with
start/stop bits (for a total of ten bits per
character) will be transmitted at a rate of
approximately 240 characters per second (cps).
Some protocols, such as error-control
protocols, employ advanced techniques such as
longer transmission frames and data
compression to increase cps.
class 1 and 2.0
International standards used between fax
application programs and faxmodems for
sending and receiving faxes.
P III: S C: G
ART ECTION
cyclic redundancy checking (CRC)
An error-detection technique consisting of a test
performed on each block or frame of data by
both sending and receiving modems. The
sending modem inserts the results of its tests in
each data block in the form of a CRC code.
The receiving modem compares its results with
the received CRC code and responds with
either a positive or negative acknowledgment.
data communications
A type of communications in which computers
are able to exchange data over an electronic
medium.
LOSSARY
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