US Robotics 3CP5695, User Manual

Page: 58 / 100

52 C
HAPTER
5: G
LOSSARY
asynchronous transmission
Data transmission in which the length of time between transmitted
characters may vary. Because characters may not be transmitted at set
intervals, start/stop bits are used to mark the beginning and end of each
character.
Auto Answer
Sets the modem to pick up the phone line when it detects a certain
number of rings. See S-register S0 in the “Technical Reference” chapter
of this manual.
auto-dial
A process where your modem dials a call for you. The dialing process is
initiated by sending an ATDT (dial tone) or ATDP (dial pulse) command
followed by the telephone number. Auto-dial is used to dial voice
numbers. See basic data command Dn in the “Technical Reference”
chapter of this manual.
baud rate
A term used to measure the speed of an analog transmission from one
point to another. Although not technically accurate, baud rate is
commonly used to mean bit rate.
binary digit
A 0 or 1, reflecting the use of the binary numbering system. Used
because the computer recognizes either of two states, OFF or ON.
Shortened form of binary digit is bit.
bit rate
Also referred to as transmission rate. The number of binary digits, or bits,
transmitted per second (bps). Communications channels using analog
modems are established at set bit rates, commonly 2400, 4800, 9600,
14,400, 28,800 and higher.
bits per second (bps)
The bits (binary digits) per second rate. Thousands of bits per second are
expressed as kilobits per second (kbps).