Paradyne COMSPHERE 3910 Installation And Operation Manual page 234

leased line
LED
Link
local analog loopback
long space disconnect
loopback test
menu tree
mixed inbound rates
MNP
modem
modulation
multiplexer (mux)
multipoint line
network
network management
address
NIM
non-linear distortion
3910-A2-GN32-30
A private telephone line connection exclusively for the user. No
dialing is necessary.
Light Emitting Diode. A light or status indicator on the DCP that
glows in response to the presence of a certain condition (e.g., an
alarm).
The physical connection between one location and another used for
data transmission. See Channel.
The modem's transmit VF signal is looped to its receiver.
A disconnect can occur if the modem receives an extended space
from a remote modem; for example, when a remote modem is
commanded to disconnect, it transmits a continuous space to the
local modem before disconnecting.
Any test that verifies a device's integrity by connecting the
device's output to the device's input, then checking the received
signal for errors.
The structure containing the menu hierarchy starting at a
Top-Level menu and extending down to various modem functions.
In a multipoint network, several different data rates from tributary
modems' transmitters communicating with one control modem.
This protocol (Microcom Networking Protocol) detects and
corrects data errors caused by telephone line noise and signal
distortion. MNP5 includes data compression.
(Modulator/DEModulator). A device that transforms signals from
digital to analog form and vice versa.
The process of varying some characteristics (usually amplitude,
frequency, and/or phase) of a carrier wave to form data
transmissions.
A device that enables the simultaneous transmission of multiple
independent data streams into a single high-speed data stream.
A circuit connecting one control modem with one or more
tributary modems.
A communications circuit.
The customer-assigned diagnostic address of a modem.
Network Interface Module. The interface provided, up to two per
carrier, for the public switched telephone network (PSTN).
VF line distortion which is usually associated with pulse-code
modulation (PCM) compandor noise on the phone line.
November 1996
Glossary
GL-7