Instruction manual

MERLIN LEGEND Communications System Release 5.0
Maintenance and Troubleshooting
555-650-140
Issue 1
June 1997
Glossary
Page GL-13
D-channel (Data-channel) 64-kbps channel that carries
signaling information or data on a PRI or 16-kpbs
channel to carry signaling information on
BRI.
dedicated feature
buttons
The imprinted feature buttons on a multiline
telephone: Conf or Conference, Drop, Feature,
HFAI (Hands Free Answer on Intercom), Hold,
Message, Mute or Microphone, Recall, Speaker or
Speakerphone, and Transfer.
delay-dial start tie
trunk
See dial-repeating tie trunk.
DFT (direct facility termination)
See personal line.
DHG (data hunt group) Group of modem or ISDN terminal
adapters
which have a common access code. Calls
are connected in a round-robin fashion to the first
available data station in the group.
dial access
See feature code.
Dialed Number
identification
Service
See DNIS.
dial-out code Digit (usually a
9 ) or digits dialed by telephone users
to get an outside line.
dial plan Numbering scheme for system extensions, lines, and
trunks.
dial-repeating tie
trunk
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 “delay dial
start tie trunk.”