Paradyne 3160-A4 Operator's Manual page 302

Glossary
Auxiliary Backplane An 8-slot backplane that fit over one half of the open section of the 3000 Series Carrier. This
is a passive assembly that provides interconnection capability between 3151 CSUs and
3161 DSU/CSUs and provides all interface connectors.
American Wire Gauge. An indication of wire size. The heavier the gauge, the lower the
AWG
AWG number, and the lower the impedance.
Bipolar 8 Zero Substitution. Encoding scheme for transmitting clear channel signals over a
B8ZS
T1 line.
backup capability The ability to reconfigure the DSU/CSU and restore data circuits through an external
backup device.
bandwidth The range of frequencies that can be passed by a transmission medium, or the range of
electrical frequencies a device is capable of handling.
BES Bursty Error Seconds. A second in which more than one but less than 320 CRC6 error
events have occurred.
bipolar signal A signal in which successive ones (marks, pulses) are of alternating positive and negative
polarity, and in which a zero (space, no pulse) is of zero amplitude.
bit Binary digit. The smallest unit of information, representing a choice between a one or a zero
(sometimes called mark or space).
The insertion of ones into the outgoing bit stream to enforce ones density requirements.
bit stuffing
block allocation A method of allocating digital signal level 0 (DS0) channels as a group rather than
individually.
method
bps Bits per second. Indicates the speed at which bits are transmitted across a data connection.
BPV Bipolar Violation. In a bipolar signal, a one (mark, pulse) which has the same polarity as its
predecessor.
byte A sequence of successive bits (usually eight) handled as a unit in data transmission.
CCITT Consultative Committee on International Telegraphy and Telephony. An advisory committee
established by the United Nations to recommend communications standards and policies. It
was renamed ITU in March 1993.
Carrier Detect. The received line signal detector. V.24 circuit 109.
CD
channel A bidirectional DS0, voice, or data path, for electrical transmission between two or more
points. Also called a circuit, line, link, path, or facility.
Assigning specific DS0 channels in the device to specific interfaces (Network, DTE
channel allocation
Drop/Insert, etc.).
Challenge Handshake Authentication Protocol. A security technique that allows a user
CHAP
password to be encrypted for transmission.
A letter, figure, number, punctuation, or other symbol.
character
Customer Identification branch or the DSU/CSU menu tree.
CID branch
client A device that receives a specific service, such as database management, from a server.
CLOCK IN interface The external clock interface on the DSU/CSU.
ClrReg branch Clear Performance Registers branch of the DSU/CSU menu tree.
Configuration branch of the DSU/CSU menu tree.
Cnfig branch
coding A technique used to accommodate the ones density requirements of E1 lines.
GL-2
March 2001 3160-A2-GB24-10