Lucent Technologies MERLIN LEGEND Release 5.0 Maintenance And Troubleshooting Manual page 432

MERLIN LEGEND Communications System Release 5.0
Maintenance and Troubleshooting 555-650-140
Glossary
DID
DID trunk
digital
Digital Communica-
tions Protocol
digital data station
Digital Signal 0
Digital Signal 1
digital switch
element
digital transmission
DIP switch
direct facility
termination
(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
transmission.
See DCP.
See ISDN terminal adapter data station
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 trans-
mission. Also used on other equipment for setting
hardware options.
(DFT) See
personal line.
Issue 1
June 1997
Page GL-14
analog
.