3Com Courier, Reference, Page: 200 / 204

10 G
LOSSARY
RAM See Random Access Memory.
Random Access
Memory (RAM)
Random Access Memory. 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.
Read-Only Memory
(ROM)
Permanent memory, not user-programmable. The Courier V.Everything
modem's factory settings are stored in ROM and can be read (loaded)
into RAM as an operational configuration if DIP switch S10 is ON at
power on.
remote access A feature that allows a remotely-located user to view the Courier
V.Everything modem's configuration screens and change the Courier
V.Everything modem's configuration. Password protection is available.
remote digital
loopback
A test that checks the phone link and a remote modem's transmitter
and receiver. Data entered from the keyboard is transmitted from the
initiating modem, received by the remote modem's receiver, looped
through its transmitter, and returned to the local screen for verification.
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.
result code Another way of saying "status message." The Courier V.Everything
modem sends result codes to your terminal, for example, to indicate
the status of a connection.
RJ11 The Universal Standard Order Code (USOC) standard for wiring a
single-line, two-wire phone network interface, passing tip and rin
signals, typically, from the public switched network.
ROM
See Read-Only Memory.
Serial Line Internet
Protocol (SLIP)
A simple protocol that permits sending IP data over a serial line. SLIP is
being superseded by the Point-to-Point Protocol (PPP).
serial port A computer port that enables the transmission of data characters one
bit at a time, using a single electrical path. Also known as a
communications port, or COM port. On PC-compatible machines, this is
a port for asynchronous, serial data transmission and, in the case of
modems, for data reception. Data is transmitted one bit at a time
(serially) to devices such as a modem, a serial mouse, or a serial printer.