AT&T MERLIN LEGEND Release 3.1 System Planning Manual page 357

Glossary
DHG
dial access
Dialed Number
identification
Service
dial-out code
dial plan
dial-repeating tie
trunk
DID
DID trunk
digital
Digital
Communications
Protocol
digital data station
Digital Signal 0
Digital Signal 1
digital switch
element
digital transmission
DIP switch
(data hunt group) Group of analog or digital data stations
that share a common access code. Calls are connected in
a round-robin fashion to the first available data station in
the group.
See feature code .
See DNIS .
Digit (usually a ) or digits dialed by telephone users to
get an outside line.
Numbering scheme for system extensions, lines, and
trunks.
Tie trunk on which the originating end of the tie trunk
transmits an off-hook signal to the receiving end and waits
for the receiving end to send an off-hook signal followed
by an on-hook signal. Also called "dial-repeating 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 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 transmission. Also
used on other equipment for setting hardware options.
GL–9
System Planning