AT&T MERLIN LEGEND Release 2.0 Equipment And Operations Manual page 269

Glossary
dial access
Dialed Number
Identification
Service
dial-out code
DID
DID trunk
digital
Digital
Communications
Protocol
digital switch
element
digital
transmission
DIP switch
direct facility
termination
Direct Inward
Dialing
Direct Station
Selector
display buttons
DLC
See feature code.
See DNIS.
A code (usually a 9) dialed by single-line telephone users
and multiline telephone users with System Access buttons
to get an outside line.
(Direct Inward Dialing) A service that transmits the called
extension to the communications system from the central
office and routes incoming calls directly to the called
extension, calling group, or outgoing trunk pool, bypassing
the system operator.
An incoming trunk that receives dialed digits from the local
exchange, allowing the communications system to connect
directly to an extension without assistance from the system
operator.
The representation of information in discrete elements such
as off and on or 0 and 1. See also analog transmission.
See DCP.
See DSE.
A mode of transmission in which information is first
converted to digital form and then transmitted as a serial
stream of pulses. See also analog transmission.
(Dual in-line package switch) A switch on a 400EM module
used to select the signaling format for tie-line transmission.
DIP switches are also used on other equipment for setting
hardware options.
See DFT.
See DID.
See DSS.
The buttons on an MLX display telephone used to access
the telephone's display.
(Direct-Line Console) An answering position used by
system operators to answer calls, transfer calls, make calls,
set up conference calls, and monitor system operations.
Calls can ring on any of the line buttons, and several calls
can ring simultaneously (unlike the QCC where calls are
Glossary GL-7