Database |
A collection of related data that 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. |
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. |
DTMF |
Dual Tone Multi Frequency are the low and high frequency tones that comprise touch tone signals. |
Dual Tone Multi Frequency |
see DTMF. |
