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7407D, Enhanced 7407D, and 7407 Plus Voice Terminals
Display
The 7407D, Enhanced 7407D, and 7407 Plus voice terminals are equipped with a built-in, 2-line,
40-character per line, liquid crystal display. The 7407D voice terminal has a standard, ‘‘twisted,’’
pneumatic display; the Enhanced 7407D and 7407 Plus voice terminals have a ‘‘super-twist’’
display.
DISPLAY button (on 7407D only)
This button is found only on the 7407D (7407D01B) voice terminal. It turns the display on and
off.
Display Adjustment Control (on 7407D and Enhanced 7407D)
On the 7407D (7407D01B) and Enhanced 7407D (7407D02C) voice terminals there is a
thumbwheel which adjusts the viewing contrast of the display.
Other Physical Features
Handset
The 7407D, Enhanced 7407D, and 7407 Plus voice terminals are equipped with an R-type
handset.
Dial pad
The 7407D, Enhanced 7407D, and 7407 Plus voice terminals are equipped with a 12-button
touch-tone dial pad. On the 7407 Plus (7407D02D) voice terminal the letters ‘‘Q’’ and ‘‘Z’’ have
been added to the appropriate dial pad keys for directory access, and the ‘‘5’’ button on the dial
pad has raised bars for visually-impaired users.
Jacks
The 7407D (7407D01B) voice terminal’s housing contains a Handset cord jack just under the left
side of the housing, and a Line jack on the back of the voice terminal. There is an RS-232C con-
nector on the optional data stand.
The Enhanced 7407D (7407D02C) and the 7407 Plus (7407D02D) voice terminals’ housing con-
tains a Handset cord jack just under the left side of the housing and a Line jack and
Speakerphone/headset adapter jack on the back of the voice terminal.
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