Altigen AltiWare OE 4.0, Руководство администратора

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Glossary
AltiWare OE System Administration Manual 207
Gl
oss
a
ry
D
database - a collection of related data which can be immediately accessed and
operated upon by a data processing system for a specific purpose.
DC - direct current. The flow of free electrons in one direction with an electrical
conductor, such as wire.
Default - the preset value from the factory or the software writer that the program
or equipment comes with. In the absence of any other command from the user - it
will work with default values.
DID - Direct Inward Dialing
digit - a single whole number between 0 and 9.
disk duplexing - the procedure of copying data onto two hard drives, each using its
own hard drive controller. If any component (hard drive controller card, cable, boot
hard drive) on the first channel fails, then the second channel will boot and operate
normally.
disk mirroring - the procedure of duplicating data written to two identical hard
drives, where both hard drives are connected to one disk controller card. If one hard
drive fails, then the data can be retrieved from the second hard drive.
DNIS (Dialed Number Identification Service) - is a telephone service that
identifies for the receiver of a call the number that the caller dialed. It's a common
feature of 800 and 900 lines. If you have multiple 800 or 900 numbers to the same
destination, DNIS tells which number was called. DNIS works by passing the touch
tone digits (DTMF or MF digits) to the destination where a special facility can read
and display them or make them available for call center programming.
Do Not Disturb (DND) - when this feature is selected, all incoming calls to the
user’s extension are denied. If the station has system forwarding instructions, the
calls will be automatically redirected to another extension, Attendant, or operator.
DTMF - Dual Tone Multi Frequency are the low and high frequency tones that
comprise touch tone signals.
drop-down menu - a list of options that display below a menu option.
DSP - Digital Signal Processor. A microprocessor with an architecture that is
particularly optimized to perform mathematical algorithms that manipulate digital
signals.
Dual Tone Multi Frequency - see: DTMF.