COMSPHERE 3821Plus Modem

directory location

Nonvolatile memory that stores up to ten telephone numbers. Each directory location can

 

have up to 40 characters entered.

DOC

Canadian Department of Communication.

download

A process that transfers modem firmware from a locally attached PC to a modem or

 

allows the cloning of firmware from a local modem to a remote modem. Also, the

 

process of moving data from a host computer to an attached computer.

DTE

Data Terminal Equipment. The equipment, such as a computer or terminal, that provides

 

data in the form of digital signals.

DTMF

Dual Tone Multi-Frequency. DTMF tones are the sounds produced by pressing the keys

 

of a Touch Tone phone, or by dialing a number with a modem using the ATDTn

 

command.

EIA

Electronic Industries Association. This organization provides standards for the data

 

communications industry.

EIA-232-E

An Electronic Industries Association's standard defining the 25-position interface

 

between data terminal equipment and data communications equipment.

EIA RS-366-A

An Electronic Industries Association's standard defining the 25-position interface

 

between data terminal equipment and data communications automatic calling equipment.

EPROM

Erasable programmable read-only memory.

error control

An algorithm used to correct data transmission errors.

escape sequence

Default setting is +++. This sequence lets you switch your modem from Data mode to

 

Command mode.

ETC

Enhanced Throughput Cellular. A proprietary analog cellular transmission protocol.

extended result codes

An asynchronous message (in either numbers or words) that includes VF data rate and

 

error control information the modem sends to the DTE after executing or trying to

 

execute a command.

fax modem

A modem capable of emulating some features of a fax machine. Working under the

 

control of fax software, a fax modem can communicate with a fax machine or with

 

another fax modem.

fax software

A program or system of programs installed on a computer that allow a fax modem to

 

send and receive facsimile images.

FCC

Federal Communications Commission. Board of Commissioners that regulates all

 

interstate and foreign electrical communication systems that originate from the United

 

States.

full-duplex

Simultaneous, two-way communications.

Group III

A fax standard that specifies a rate of transmission of about one page per minute.

half-duplex

Two-way data communications allowed in only one direction at a time.

Glossary-4

January 1999

3821-A2-GB20-40

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Paradyne 3821PLUS manual Doc