Glossary
Glossary-3
3350-A2-GB20-10
June 1996
Cust1
Customer 1 configuration area. The first of two sets of customer-defined
configuration options.
Cust2
Customer 2 configuration area. The second of two sets of customer-defined
configuration options.
daisy chaining
Connecting the COM port of one E1 NTU to the AUX port of another E1 NTU to
provide SNMP connectivity.
database
An organized compilation of computerized data.
DB15 connector
A 15-position connector used on cables or devices.
DB25 connector
A 25-position connector used on cables or devices.
DCE
Data Circuit-terminating Equipment or Data Communications Equipment. A device
which provides signal conversion for communication between the DTE and the
network.
default
A preset value that is assumed to be correct unless changed by the user.
DevFail
Device Failure. A message that indicates that an internal failure has been detected
by the operating firmware. An 8-digit code appears for use by AT&T Paradyne
service personnel.
DevHS branch
Device Health and Status branch of the E1 NTU menu tree.
device
A mechanical, electrical, or electronic unit with a special purpose.
digital signal
A signal composed of discrete elements (zeros and ones) instead of a great
multitude of analog elements.
diskette
A thin, flexible magnetic disk enclose in a protective jacket.
DLB
DTE Loopback. Loops the received signal on the G.703 DTE port back to the DTE
without change.
DL branch
Download branch of the E1 NTU menu tree.
download
A process that transfers device firmware from a locally-attached PC to a device, or
allows the duplication of firmware from a local device to a remote device.
downstream device
A device that is connected farther from the host computer.
drop/insert
An interconnection point for terminals, multiplexers, and transmission facilities.
Individual channels may be inserted into the aggregate stream or dropped out to
accommodate specific applications.
DS0
Digital Signal Level 0. A 64 kbps standard signal or channel.
DS1/E1 MIB
Defines objects for managing E1 interfaces and supports the network and G.703
DTE interfaces on the E1 NTU.
DTE
Data Terminal Equipment. The equipment, such as a computer or terminal, that
provides data in the form of digital signals.
EER
Excessive Error Rate. An error rate that is greater than the threshold in the E1 NTU.
EIA
Electronic Industries Association. An organization providing standards for the data
communication industry.
Enterprise MIB
MIB objects unique to AT&T Paradyne devices.
enterprise-specific trap
A trap unique to AT&T Paradyne devices.
error
A discrepancy between a measured or computed value or condition and the true or
specified value or condition.
ES
Errored seconds. Seconds with one or more error events.