Lucent Technologies MERLIN LEGEND Release 6.1 Maintenance And Troubleshooting Manual page 470

MERLIN LEGEND Communications System Release 6.1
Maintenance and Troubleshooting 555-661-140
DLC
DNIS
door answering
unit
DOS
drop-and-insert
equipment
DS0
DS1
DSL
DSS
DTE
(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 AT&T and MCI; it routes incoming 800 or 900 calls
according to customer-selected parameters, such as area
code, state, or time of call.
Device connected to a basic telephone jack and used at
an unattended extension or front desk.
(disk operating system)
A device that can be installed between systems
connected by tandem PRI trunks or T1-emulated tandem
tie trunks to allow fractional use of the facility, that is, use
of fewer than 23 of the PRI B-channels or fewer than 24 of
the T1 channels . In a PRI facility, the equipment must
never drop Channel 24, the D-channel . All channels must
still be programmed and all count towards the system
maximum of 80 lines.
(Digital Signal 0) Single 64-kbps voice or data channel.
(Digital Signal 1) Bit -oriented signaling interface that
multiplexes twenty-four 64-kbps channels into a single
1.544-Mbps stream.
(Digital Subscriber Line) A Digital Subscriber Line
provides full-duplex service on a single twisted metallic
pair (2-wire) at a rate sufficient to support ISDN Basic
Rate Access.
(Direct Station Selector) 60-button adjunct that enhances
the call-handling capabilities of an MLX-20L or MLX-28D
telephone used as an operator console.
(data terminal equipment) Equipment that makes the
endpoints in a connection over a data connection; for
example, a data terminal, personal computer, host
computer, or printer.
Issue 1
August 1998
Page GL-14