User`s guide

42 56K Message Modem
Random Access Memory (RAM) Memory that is available for use when the
modem is turned on, but that clears of all information when the power is
turned off. The modem's RAM holds the current operational settings, a
flow control buffer, and a command buffer.
remote digital loopback
A test that checks the phone link and a remote modem's transmitter and
receiver.
remote echo
A copy of the data received by the remote system, returned to the
sending system, and displayed on the screen. Remote echoing is a
function of the remote system.
ROM
Read Only Memory. Permanent memory, not user-programmable.
serial transmission
The consecutive flow of data in a single channel. Compare to parallel
transmissions where data flows simultaneously in multiple channels.
start/stop bits
The signalling bits attached to a character before and after the
character is transmitted during asynchronous transmission.
terminal
A device whose keyboard and display are used for sending and
receiving data over a communications link. 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. Also
known as command mode.