AT&T MERLIN LEGEND Release 3.1 System Programming Manual page 856

Glossary
dial plan
dial-repeating tie
trunk
DID
DID trunk
digital
Digital
Communications
Protocol
Digital Signal 0
Digital Signal 1
digital switch
element
digital transmission
DIP switch
direct facility
termination
Direct Inward
Dialing
Direct-Line Console
Direct Station
Selector
display buttons
Numbering scheme for system extensions, lines, and
trunks.
See delay-dial start tie trunk .
(Direct Inward Dialing) Service that transmits from the
telephone company central office and routes incoming
calls directly to the called extension, calling group , or
outgoing 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 DCP .
See DS0 .
See DS1 .
See DSE .
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 .
(dual in-line package) Switch on a 400EM module used to
select the signaling format for tie-line transmission. Also
used on other equipment for setting hardware options.
(DFT) See personal line .
See DID.
See DLC .
See DSS .
Buttons on an MLX display telephone used to access the
telephone's display.
GL–9
System Programming