3Com 56K Command Reference Manual page 205

originate mode
parallel transmission
parity
Plug & Play ISA
Point-to-Point
Protocol (PPP)
protocol
provisioning
RAM
Random Access
Memory (RAM)
A state in which the modem transmits at the predefined low frequency
of the communications channel and receives at the high frequency. The
transmit/receive frequencies are the reverse of the called modem which
is in Answer mode.
The transfer of data characters using parallel electrical paths for each
bit of the character, for example, 8 paths for 8-bit characters. Data is
stored in computers in parallel form, but may be converted to serial
form for certain operations. See Serial Transmission.
An error-detection method that checks the validity of a transmitted
character. Character checking has been surpassed by more reliable and
efficient forms of block-checking, including Xmodem-type protocols
and the ARQ protocol implemented in modems.
The same type of parity must be used by two communicating
computers, or both may omit parity. When parity is used, a parity bit is
added to each transmitted character. The bit's value is 0 or 1, to make
the total number of 1's in the character even or odd, depending on
which type of parity is used.
A variation of the standard ISA bus that attempts to automate the
troublesome process of resolving the IRQ and COM port conflicts that
can arise when new devices are installed in ISA-bus computers.
A protocol used to send data over serial lines. PPP provides error
checking, link control, and authentication, and can be used to carry IP,
IPX, and other protocols. PPP is superseding SLIP as the leading dial-in
protocol.
A system of rules and procedures governing communications between
two or more devices. Protocols vary, but communicating devices must
follow the same protocol in order to exchange data. The format of the
data, readiness to receive or send, error detection and error correction
are some of the operations that may be defined in protocols.
Another way of saying "setting up telephone lines."
See Random Access Memory.
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.
G 9
LOSSARY