Filter
Top Products
Glossary
GL-2
3160-A2-GB21-80
March 1999
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 number, and the lower the impedance.
Bipolar 8 Zero Substitution. Encoding scheme for transmitting clear channel signals over a
T1 line.
The ability to reconfigure the DSU/CSU and restore data circuits through an external
backup device.
The range of frequencies that can be passed by a transmission medium, or the range of
electrical frequencies a device is capable of handling.
Bursty Error Seconds. A second in which more than one but less than 320 CRC6 error
events have occurred.
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.
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.
A method of allocating digital signal level 0 (DS0) channels as a group rather than
individually.
Bits per second. Indicates the speed at which bits are transmitted across a data
connection.
Bipolar Violation. In a bipolar signal, a one (mark, pulse) which has the same polarity as its
predecessor.
A sequence of successive bits (usually eight) handled as a unit in data transmission.
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.
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
Drop/Insert, etc.).
Challenge Handshake Authentication Protocol. A security technique that allows a user
password to be encrypted for transmission.
A letter, figure, number, punctuation, or other symbol.
Customer Identification branch or the DSU/CSU menu tree.
A device that receives a specific service, such as database management, from a server.
The external clock interface on the DSU/CSU.
Clear Performance Registers branch of the DSU/CSU menu tree.
Configuration branch of the DSU/CSU menu tree.
A technique used to accommodate the ones density requirements of E1 lines.
Auxiliary Backplane
AW G
B8ZS
backup capability
bandwidth
BES
bipolar signal
bit
bit stuffing
block allocation
method
bps
BPV
byte
CCITT
CD
channel
channel allocation
CHAP
character
CID branch
client
CLOCK IN interface
ClrReg branch
Cnfig branch
coding