Paradyne COMSPHERE 3800PLUS User Manual page 203

Active (Operating) A configuration area containing configuration options currently in use by the modem. When a
power cycle occurs, a reset is performed, or a save is issued using the DCP, this area is updated
with the contents of Active (Saved).
Active (Saved)
A nonvolatile configuration area containing the most recently saved configuration options. Any
changes made to configuration options can be saved using either the DCP's Save command or
by issuing an AT&W0 command.
analog loop
A test in which the modem's transmit VF signal is looped to its receiver.
analog signal A type of signal composed of continuously variable values, used to transmit voice or data over
telephone lines.
Answer mode
The state of a modem that is ready to receive an incoming call.
ASCII American Standard Code for Information Interchange. The standard for data transmission over
telephone lines. A 7-bit code establishes compatibility between data services. The ASCII code
consists of 32 control characters (nondisplayed) and 96 displayed characters.
Async Dial
A factory-preset configuration area containing the configuration options most often used in
asynchronous dial networks.
asynchronous
Data transmission that is synchronized by a transmission start bit at the beginning of a character
(five to eight bits) and one or more stop bits at the end.
transmission
AT command mode The idle state prior to the device establishing a successful connection with a remote device. It is
from the AT Command mode that AT Commands are issued.
AT command set
A group of commands, issued from an asynchronous DTE, that allow control of the modem while
in Command mode. All commands must begin with the characters AT and end with a carriage
return.
AT command string
Several AT commands issued at once. The string is preceded by an AT prefix.
autobaud
The mode in which the device automatically determines the asynchronous DTE data rate.
automatic answer A capability to respond to a call received over a dial line.
automatic dial
When leased-line operation fails, this function forces the modem to dial the telephone number
stored in directory location 1; communication over the dial network continues with the remote
backup
device.
automatic dial
When operating in Dial Backup mode, this function forces the modem to periodically check the
quality of the leased line. If the leased line is found to be at normal operating condition, the
standby
modem disconnects from the dial network and continues normal operation over the leased-line
network.
3980-A2-GB30-40
Glossary
October 1998 Glossary-1