AT&T MERLIN LEGEND Release 2.0 Equipment And Operations Manual page 263

Glossary
7500B Data
Module
account code
Accunet
address
adjunct
alternate mark
inversion
AMI
A data communications device that allows connection
between RS-232 data terminal equipment (DTE) and the
communications system control unit via MLX station jacks
on the 008 MLX or 408 GS/LS-MLX module. The 7500B
Data Module is used together with a modem in a modern
pool to change digital signals to analog signals, and vice
versa, which allows transmission between digital and
analog data stations.
A code used to associate incoming and outgoing calls with
corresponding accounts, employees, projects, and clients.
AT&T's switched digital service for 56-kbps, 64-kbps
restricted, and 64-kbps clear circuit-switched data calls.
A coded representation of the destination or the originating
terminal of data, such as the dialed extension number
assigned to the data terminal, Multiple terminals on one
communications line, for example, must each have a unique
address.
Optional equipment used with the communications system
such as an alerting device that connects to a multiline
telephone or to a telephone jack.
See AMI.
(Alternate mark inversion) A line-coding format in which a
binary 1 is represented by a positive or negative pulse and
a binary 0 is represented by no line signal, Subsequent
binary 1's must alternate in polarity or a bipolar violation will
occur. AMI is used in the DS1 interface.
Glossary GL-1