Paradyne COMSPHERE 3920PLUS Technical Reference Manual page 341

COMSPHERE 392xPlus Modems
Data mode
DB-25 connector
dBm
DCE
DCP
data compression
demodulation
DevHS
Diagnostic Channel (DC)
dial command modifiers
dial line
dial network
Dial Standby
dial string
digital bridging
digital signal processor
(DSP)
Glossary-4
A state where any entries made from the DTE are considered data and are transmitted
and received between modems. Modems remain in Data mode until the connection is
broken or until they are forced into online Command mode using the escape sequence.
A 25-pin connector that is used to connect a cable which enables communication
between two devices.
A decibel referenced to one milliwatt. This unit measures relative signal power.
Data Communications Equipment (or Data Circuit Terminating Equipment). Generally
refers to to a modem or other data transmission devices that provides the functions
required to establish, maintain, and end a connection. This equipment also provides the
signal conversion required for communication between the DTE and the telephone line.
Diagnostic Control Panel. The face of the modem that continuously provides status
information about the modem's operation and allows an operator to manage its operation.
This is a generic term used for both the standalone and carrier-mounted models. See
SDCP.
The elimination of empty fields, redundancies, and gaps to reduce storage capacity needs
and the amount of data to be transmitted. Anything that is compressed is restored after
the data is received.
The process of recovering data from a modulated carrier wave.
Device Health and Status. A detailed account of device alarms.
The diagnostic interface between two network devices, used to extend the NMS
diagnostics to downstream devices.
A modifier used in the dial string that instructs the modem how to process a dialed
telephone number.
A communications circuit that is established by a switched circuit connection in the dial
network.
See PSTN.
A function available when the modem is operating in Dial Backup mode, allowing the
modem to switch back to lease-line operation while still maintaining the dial-line
connection.
A series of characters that consists of numbers and modifiers used to dial a telephone
number.
Provides the capability of dial backup in a multipoint configuration by bridging the
signal on the digital side of the front end panel.
A microprocessor designed to perform and execute mathematically intense calculations
and algorithms at high speeds, in real time, for various DSP applications. It is mostly
used in DSP applications involved in the sampling of a signal, such as digital filtering,
speech vocoding, image processing, fast Fourier transforms, digital audio, and data
transmission.
October 1998 3920-A2-GH30-40