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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 Quick
Reference."
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.
G
LOSSARY
Auto dial is used to dial voice numbers. See
command Dn.
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
115
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