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Glossary and Abbreviations
BTU
British Thermal Unit
buffer
1.In hardware, a circuit or component that isolates one electrical circuit from another. Typically, a buffer holds data from one circuit or process until another circuit or process is ready to accept the data.
2.In software, an area of memory that is used for temporary storage.
bus
A multiconductor electrical path used to transfer information over a common connection from any of several sources to any of several destinations.
business communications terminal (BCT)
A digital data terminal used for business applications. A BCT can function via a data module as a
BX.25
A version of the CCITT X.25 protocol for data communications. BX.25 adds a fourth level to the standard X.25 interface. This uppermost level combines levels 4, 5, and 6 of the ISO reference model.
bypass tie trunks
A
byte
A sequence of (usually eight) bits processed together.
C
CACR
Cancellation of Authorization Code Request
cabinet
Housing for racks, shelves, or carriers that hold electronic equipment.
cable
Physical connection between two pieces of equipment (for example, data terminal and modem) or between a piece of equipment and a termination field.
cable connector
A jack (female) or plug (male) on the end of a cable. A cable connector connects wires on a cable to specific leads on telephone or data equipment.
CAG
Coverage answer group
call appearance
1.For the attendant console, six buttons, labeled
2.For the voice terminal, a button labeled with an extension and used to place outgoing calls,
Issue 5 January 1998 |