Lucent Technologies MERLIN LEGEND Release 5.0 System Programming Manual page 919

MERLIN LEGEND Communications System Release 5.0
System Programming 555-650-111
Glossary
Dialed Number
Identification
Service
dial-out code
dial plan
DID
DID trunk
digital
Digital Signal 0
Digital Signal 1
digital subscriber
line
digital
transmission
direct facility
termination
Direct Inward Dial
Direct-Line
Console
Direct Station
Selector
display buttons
DLC
DNIS
door answering
unit
DOS
See DNIS .
Digit (usually a ) or digits dialed by telephone users to get
9
an outside line.
Numbering scheme for system extensions, lines, and
trunks.
(Direct Inward Dial) Service that transmits from the
telephone company central office and routes incoming calls
directly to the called extension, calling group , or outgoing
line/trunk pool , bypassing the system operator.
Incoming trunk that receives dialed digits from the local
exchange, allowing the system to connect directly to an
extension without assistance from the system operator.
Representation of information in discrete elements such as
off and on or zero and one. See also analog transmission .
See DS0 .
See DS1 .
See DSL .
Mode of transmission in which the information to be
transmitted is first converted to digital form and then
transmitted as a serial stream of pulses. See also analog
transmission .
(DFT) See personal line .
See DID.
See DLC .
See DSS .
Buttons on an MLX display telephone used to access the
telephone's display.
(Direct-Line Console) Telephone used by a system
operator to answer outside calls (not directed to an
individual or a group) and inside calls, transfer calls, make
outside calls for users with outward calling restrictions, set
up conference calls, and monitor system operation.
(Dialed Number Identification Service) Service provided by
AT&T and MCI; it routes incoming 800 or 900 calls
according to customer-selected parameters, such as area
code, state, or time of call.
Device connected to a basic telephone jack and used at an
unattended extension or front desk.
(disk operating system)
Issue 1
June 1997
Page GL--6