AT&T MERLIN LEGEND Release 3.0 System Programming And Maintenance Manual page 102

Glossary
Digital Signal 1
digital switch element
digital transmission
DIP switch
direct facility
termination
Direct Inward Dialing
Direct-Line Console
Direct Station Selector
display buttons
DLC
DNIS
GL-12 System Programming and Maintenance (SPM)
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.
(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 the AT&T Switched Network
(ASN); it routes incoming 800 or 900 calls
according to customer-selected parameters,
such as area code, state, or time of call.