Lucent Technologies MERLIN LEGEND Release 5.0 Installation Manual page 331

MERLIN LEGEND Communications System Release 5.0
Installation 555-650-140
Glossary
DSS
DTE
DTMF signaling
E
E&M signaling
EIA
EIA-232-D
Electronic
Switching System
(Direct Station Selector) 60-button adjunct that
enhances the call-handling capabilities of an
MLX-20L or MLX-28D telephone used as an opera-
tor 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.
(dual-tone multifrequency signaling) Touch-tone sig-
naling from telephones using the voice transmission
path. DTMF signaling provides 12 distinct signals,
each representing a dialed digit or character, and
each composed of two voiceband frequencies.
Trunk supervisory signaling, used between two com-
munications systems, in which signaling information
is transferred through 2-state voltage conditions (on
the Ear and Mouth leads) for analog applications and
through two bit s for digital applications. See also
trunk.
(Electronic Industries Association)
Physical interface, specified by the EIA , that trans-
mits and receives asynchronous data at speeds of
up to 19.2-kbps over cable distances of 50 ft. (15 m.)
See ESS.
Issue 1
June 1997
Page GL-16
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