Paradyne 3150 Operator's Manual page 221

Ctrl branch Control branch of the CSU menu tree.
Clear To Send. A signal indicating that the device is ready for the DTE to transmit data.
CTS
Usually occurs in response to Request To Send (RTS).
Cust1 Customer 1 configuration area. The first of two sets of customer-defined configuration
options.
Cust2 Customer 2 configuration area. The first of two sets of customer-defined configuration
options.
D4 The transmission standard that specifies 12 frames as a superframe that is used for frame
synchronization and to locate signaling bits.
database An organized compilation of computerized data.
data carrier A continuous frequency signal that can be modulated by another signal that contains
information to be transmitted.
DB15 connector A 15-position connector used on cables or devices.
DCE Data Communications Equipment. The equipment that provides the functions required to
establish, maintain, and end a connection. It also provides the signal conversion required for
communication between the DTE and the network.
A factory-preset value that is assumed to be correct unless changed by the user.
default
Device Failure. A message that indicates that an internal failure has been detected by the
DevFail
operating firmware. An 8-digit code appears for use by service personnel.
Device Health and Status branch of the CSU menu tree.
DevHS branch
device A mechanical, electrical, or electronic unit with a special purpose.
digital signal A signal composed of only two discrete values, representing the binary digits 0 and 1.
diskette A thin, flexible magnetic disk enclosed in a protective jacket.
Download branch of the CSU menu tree.
DL branch
DTE Loopback. Loopback mode that loops the information received on the DTE T1 network
DLB
interface back to the network as close to the network interface as possible.
A process that transfers device firmware and software from a locally-attached PC to a
download
device, or allows the duplication of firmware and software from a local device to a remote
device.
An interconnection point for terminals, multiplexers, and transmission facilities. Individual
drop/insert
channels may be inserted into the aggregate stream or dropped out to accommodate
specific applications.
DS0 Digital signal level 0 (zero). A 64 kbps digital telecommunications signal or channel.
DS1 Digital signal level 1 (one). A digital signal transmitted at the rate of 1.544 Mbps in North
America.
DS1/E1 MIB Defines objects for managing E1 interfaces and supports the network and G.703 DTE
interfaces on the E1 NTU.
DSR Data Set Ready. A signal from the modem to the DTE that indicates the modem is turned
ON and connected to the DTE.
DSU Data Service Unit. Data communications equipment that provides timing, signal
regeneration, and an interface to data terminal equipment. A subrate DSU/CSU is normally
referred to as a DSU.
3150-A2-GB24-10 March 2001
Glossary
GL-3