AT&T MERLIN LEGEND Release 3.0 System Programming And Maintenance Manual page 101

Glossary
delay-dial-start tie
trunk
DFT
dial access
Dialed Number
identification Service
dial-out code
dial plan
dial-repeating tie trunk
DID
DID trunk
digital
Digital
Communications
Protocol
Digital Signal 0
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 facility termination) See personal line.
See feature code.
See DNIS
Digit (usually a 9) or digits dialed by telephone
users to get an outside line.
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.
System Programming and Maintenance (SPM) GL-11