ADTRAN DSU III ARdc Manual page 124

Appendix F. Glossary
parity bit
A binary bit appended to an array of bits to make the sum of all the
bits always odd or always even.
point-to-point
A private circuit, conversation, or teleconference in which there is
one person at each end, usually connected by some dedicated trans-
mission modem.
read only memory
ROM. A memory device which is programmed at the factory and
whose contents thereafter cannot be altered.
remote configuration
A feature designed into ADTRAN DSU/CSU products that allows a
remote DSU/CSU to be configured from a local DSU/CSU or VT 100
compatible terminal.
scrambler
A device that transposes or inverts signals, or otherwise encodes a
message at the transmitter, to make it unintelligible at a receiver not
equipped with an appropriately set descrambling device.
synchronous data link control
SDLC. A bit-oriented synchronous communications protocol devel-
oped by IBM where the message may contain any collection or
sequence of bits without being mistaken for a control character.
service
The provision of telecommunications to customers by a common car-
rier, administration, or private operating agency using voice, data,
and/or video technologies.
simple network management protocol
SNMP. A control and reporting scheme widely used to manage
devices from different vendors. SNMP operates on top of the Internet
protocol.
F-6 DSU III ARdc User Manual 61200270L1-20