User`s guide

56K Professional Message Modem48
terminal
A device whose keyboard and display are used for sending and
receiving data over a communications link. This device differs from a
microcomputer or a mainframe in that it has little or no internal
processing capabilities.
terminal mode
Software mode that allows direct communication with the modem. This
mode is also known as command mode.
throughput
The amount of actual user data transmitted per second without the
overhead of
protocol
information such as
start/stop bits
or
frame
headers and trailers. Compare it with
characters per second
.
V.8
This is the
ITU-T
standard specification that covers the initial
handshaking process.
V.17 fax
This is the
ITU-T
standard for making
facsimile
connections at 14,400
bps, 12,000 bps, 9600 bps, and 7200 bps.
V.21
This is the
ITU-T
standard for modems operating in asynchronous mode
at speeds at 300 bps,
full-duplex
, on public switched telephone
networks.
V.22
This is the
ITU-T
standard for modem communications at 1200 bps,
compatible with the Bell 212A standard observed in the U.S. and
Canada.
V.22 bis
This is the
ITU-T
standard for modem communications at 2400 bps. The
standard includes an automatic link negotiation fallback to
1200 bps and compatibility with Bell 212A/V.22 modems.
V.27 ter
This is the
ITU-T
standard for
facsimile
operations that specifies
modulation at 4800 bps, with fallback to 2400 bps.